Freelancer vs Upwork (2026)
Freelancer vs Upwork (2026) - An Honest, Side-by-Side Comparison for Businesses and Freelancers
Engineering is a broad field encompassing the application of knowledge, processes, and tools to invent, design, modify, manufacture, or maintain an item or a system. Engineering helps the world develop - it can make things more efficient, improve the quality of what we have or create something never seen before. It is a field of limitless potential and progression as almost everything around us involves some form of engineering. Professional engineers use their knowledge, skills and understanding to offer innovative solutions to complex problems.
Here’s some projects that our expert Engineer made real:
Engineering is everywhere – be it inventions, architecture, automobile engineering or even mathematics; the opportunities and possibilities are exponentially increasing. With the decade this field undoubtedly bring worldly improvements through increased knowledge and research. We provide our clients with connection to experienced Engineers who`ve proven themselves on Freelancer with outstanding projects. Highly skilled in a diverse selection of Engineering works across multiple industries our Engineers turn both simple and complex tasks into a reality. Acquire the best Engineering services here on Freelancer.com – post your project today!
From 137,696 reviews, clients rate our Engineers 4.9 out of 5 stars.Engineering is a broad field encompassing the application of knowledge, processes, and tools to invent, design, modify, manufacture, or maintain an item or a system. Engineering helps the world develop - it can make things more efficient, improve the quality of what we have or create something never seen before. It is a field of limitless potential and progression as almost everything around us involves some form of engineering. Professional engineers use their knowledge, skills and understanding to offer innovative solutions to complex problems.
Here’s some projects that our expert Engineer made real:
Engineering is everywhere – be it inventions, architecture, automobile engineering or even mathematics; the opportunities and possibilities are exponentially increasing. With the decade this field undoubtedly bring worldly improvements through increased knowledge and research. We provide our clients with connection to experienced Engineers who`ve proven themselves on Freelancer with outstanding projects. Highly skilled in a diverse selection of Engineering works across multiple industries our Engineers turn both simple and complex tasks into a reality. Acquire the best Engineering services here on Freelancer.com – post your project today!
From 137,696 reviews, clients rate our Engineers 4.9 out of 5 stars.I need a licensed Professional Engineer (P.E.) based in Laredo, Texas, to conduct a structural inspection on an existing residential building. Ideal Skills and Experience: - Licensed P.E. in Texas - Experience with residential building inspections - Strong knowledge of structural integrity issues - Ability to provide a detailed inspection report - Excellent communication skills for discussing findings
I need ten well-researched, publication-ready papers that explore innovative ways a smart house can create and manage its own energy. The main thread running through the collection must be the use of domestic water pressure to generate electricity; that topic takes priority and should anchor the majority of the technical discussion, design analysis, and case studies. I would also like a smaller, complementary focus on using rooftop solar panels to heat water, so the set reads as a coherent suite of solutions rather than isolated articles. Each paper should be written in clear, academic English, reference current standards and real-world data where available, and include citations in IEEE or APA format. Original diagrams, basic calculations, or simulation snapshots that illustrate efficien...
I need an HVAC engineer to document the existing mechanical systems for a 1500 sq. ft. retail store and conduct air quality tests for city code compliance in Eagan, MN. Requirements: - Draw detailed mechanical systems layout - Conduct air tests for: - Ventilation effectiveness - Air flow rates per room - Negative air flow in dog wash area Ideal skills and experience: - HVAC engineering expertise - Familiarity with city codes in Eagan, MN - Ability to interpret and work from detailed architectural plans Please ensure your bid includes relevant experience and any necessary certifications.
I need a qualified specialist to help me plan and carry out proof-load tests on replenishment-at-sea (RAS) fittings installed on military vessels. The work will focus on both fueling and cargo transfer points, and every connection must be demonstrated safe at a working load of 17 tons. Here’s what I expect from you. First, translate the applicable naval standards into a clear, step-by-step test procedure that can be executed at sea or alongside without permanent ship alterations. You will specify the portable hydraulic rams, chain blocks, calibrated load cells, spreader beams and any other simple machines required, keeping the overall rig compact enough to manoeuvre through narrow passages and quick to re-rig between stations. Once the gear list is agreed, I’ll need all calcu...
I have already trained and deployed a Logistic Regression model in Streamlit that classifies breast-tumour samples as malignant or benign. What I need now is a polished data-visualization layer so users can quickly grasp how each feature influences the prediction. My immediate focus is on bar-chart visualisations. I want clear, well-labelled bars that compare malignant vs. benign distributions, show feature importances, and surface any other insight you think adds value. The work should plug straight into my current Streamlit app and read from the same Pandas DataFrame I am already passing to the model. Although the main task is visualisation, I am also experimenting with feature selection, so if your code can be structured in a way that makes it easy to toggle feature subsets, that wi...
I’m finalising an engineering research paper focused on Aviation Maintenance Technology. I need a standalone literature review that goes beyond a simple summary. The goal is an in-depth critique that not only compares and contrasts prior findings but also pinpoints gaps worth addressing in the discussion section of the full paper. Scope • Locate and evaluate recent, peer-reviewed academic journals, authoritative industry reports, and relevant OEM or regulatory technical manuals. • Synthesise the material into a logically structured review (roughly 6000 words) that flows from broad background to specific problem areas. • Critically assess methodologies, data quality, and practical relevance for maintenance operations rather than merely paraphrasing. • Con...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
I need a technical engineering document translated with absolute fidelity to the original terminology, layout, and formatting. The file is a Word manuscript packed with schematics, dimensional data, and safety notes, so deep familiarity with engineering vocabulary is essential. Please return a fully formatted Word file that mirrors the source, preserving tables, captions, and figure references. If you use CAT tools such as Trados, MemoQ, or similar to maintain term consistency, all the better—just let me know which one. Deliverables • Complete, publication-ready translation in Word (same styling and pagination as the original) • A short terminology list or comments for any terms that needed clarification When you reply, tell me your language pair, relevant expe...
Here is what I need from you: • Live or recorded sessions that walk me through project setup, mesh generation, material assignment, heat-source definition, and result interpretation. Complete study of the software and make me good in it. • Worked examples for each process (arc, resistance, laser) . • Tips on choosing solver settings so runs finish in reasonable time without sacrificing accuracy. • A short checklist I can follow after the training to make sure every new model I build captures the right thermal outputs. I already know welding theory, so the focus should stay on Simufact’s interface, modelling strategy, and validation of the simulation against real-world weld data. Remote delivery is fine—screen-share, annotated PDFs, or short videos al...
I have several scanned PDF plans that must be redrawn into clean, accurate CAD files right away. The job is strictly a drafting task—no design work—so I only need the basic outlines captured: walls, openings, overall dimensions and room labels. Your deliverable is a fully editable .dwg (AutoCAD-compatible) file that mirrors the PDFs in scale, line-weight hierarchy and layout, plus an exported PDF for quick reference. Speed matters: once I send the scans, I’d like a first pass within 24 hours and the final files shortly after any revisions. If you have a proven workflow for turning raster plans into tidy vector drawings, please let me know how soon you can start and how long the set will take you.
I need an Aspen Plus specialist to build and analyse a full process-flow model for my plant concept. The priority is clear, accurate design and thorough performance analysis rather than broad optimisation at this stage. You will start from my raw stream data and block sketch, translate it into a working Aspen Plus flowsheet, size and configure the major equipment, then deliver a concise technical report that explains assumptions, convergence settings, key results and any recommendations for improvement. If you rely on add-ins or external calculation tools, note them explicitly so I understand the full workflow. Deliverables • Aspen Plus (.apw) file with fully converged flowsheet • Brief design report (PDF or Word) summarising methodology, equipment sizing, energy and mass ...
Hello; We need licensed PE/ Archt Eng. in USA Please include examples of similar residential work, confirm your licensure, and outline the steps and timeline you follow from site analysis to final revisions. Thanks:)
I already have MATLAB & Simulink installed and now need a well-structured electrical grid model focused on fault analysis. The system must include properly parameterised generators, transformers and representative load models so I can inject single-line-to-ground, line-to-line and three-phase faults and observe transient behaviour, voltages, currents and protection relay responses. Please configure the model with clear subsystems, naming conventions that follow Simscape Electrical best practice, and scopes or data-logging blocks that make it easy to export results to the workspace for post-processing. Reusability matters, so keep parameters grouped in a mask or a script I can tweak later to test different power ratings and fault locations. Deliverables • A clean .slx file cont...
I need professional engineering (PE) stamping for structural plans for a new residential construction project. Requirements: - Review and stamp structural plans - Ensure compliance with local building codes and regulations - Provide necessary documentation for permit applications Ideal skills and experience: - Licensed Professional Engineer (PE) - Experience with residential structural plans - Knowledge of local building codes and regulations
Lab EMG - Electromyogram I have result from the lab attached labeled Jennah Introduction Today, we will use the Biopac amplifiers at each station to collect electromyography data, which we will then explore and analyze using Matlab. In this lab, you will investigate the EMG from two muscles resulting from isometric muscle contractions. Matlab code for collecting EMG data (BioPacEMG.m) is posted on Canvas. Verify that your equipment is working correctly before attempting to collect any actual data. Task 1: Data Collection Procedure Before testing your setup, make sure that the power light turns on when you flip the power switch on your amplifier. Dr. Adamovich will explain the proper amplifier settings at the beginning of class. After ensuring the proper locations for electrode placement ...
I have several scanned PDF plans that must be redrawn into clean, accurate CAD files right away. The job is strictly a drafting task—no design work—so I only need the basic outlines captured: walls, openings, overall dimensions and room labels. Your deliverable is a fully editable .dwg (AutoCAD-compatible) file that mirrors the PDFs in scale, line-weight hierarchy and layout, plus an exported PDF for quick reference. Speed matters: once I send the scans, I’d like a first pass within 24 hours and the final files shortly after any revisions. If you have a proven workflow for turning raster plans into tidy vector drawings, please let me know how soon you can start and how long the set will take you.
I’m looking for a single professional who can look after both the electrical and plumbing sides of my property. The immediate priority is routine maintenance: checking circuits, panels, fixtures, pipes, and drains, making sure everything is safe, efficient, and up to code. While you’re on-site I also want a few new electrical appliances installed and tested so they integrate cleanly with the existing wiring. Please bring the tools, diagnostic gear, and parts you normally rely on. I appreciate tidy workmanship and a brief written report at the end that lists what was inspected, what was serviced or replaced, and anything that may need future attention. Key deliverables • Full maintenance run-through of all electrical and plumbing systems • Installation, wiring,...
Freelancer Brief – 3D Modeling Task We are developing a premium ergonomic cervical pillow made from molded memory foam. We need a parametric 3D CAD model suitable for industrial design and engineering simulation. Key requirements: • Dimensions: 600 x 350 mm pillow • Dual height: 95 mm and 120 mm • Central ergonomic cavity for the head • Cervical support ridge • Smooth ergonomic transitions • Manufacturing-ready geometry for foam molding Deliverables: • Parametric CAD model • STEP file • Native CAD file • 3 render views (top, perspective, section) The design should look premium and ergonomic similar to products from Tempur, Emma, or Cushion Lab, but must be original.
I’m preparing a new catalogue that will showcase a full range of mechanical and process-equipment—Stainless Steel Pipes, Fittings, Flow Meters, Steam components, pumps, valves and more (the exact list follows once we engage). To make it truly useful for engineers and other technical personnel, I need each item presented with two core components: a clear, benefits-oriented product description and a rigorously detailed technical specification. Here’s how I see the work flowing. For every product I’ll forward the raw material: existing datasheets, drawings, performance curves and any available test results. Your task is to transform that source data into polished catalogue copy that: • Summarises operating principle, key features and typical applications in abou...
Project Brief: Kinetic Pulse PCBA 1. Core Functional Requirements Power Input: Must accept AC input from a linear induction coil (approx. 3,000 turns). Energy Storage: Must use a Supercapacitor (1.5F - 2.0F / 5.5V) as the sole energy storage—No chemical batteries. Power Regulation: A boost converter must provide a stable 3.3V rail even as the capacitor discharges down to 0.7V. Power Efficiency: The entire system must be "Nano-power." Total standby/idle current must be < 1µA to ensure the device holds a charge. Timing Logic: An internal timer must trigger a 100ms audible alert (Buzzer) every 40 seconds. Pressure Sensing: The system must interface with a Force Sensitive Resistor (FSR). State 1: Visual Green LED alert when pressure is applied (> 50g). State 2: Visu...
I'm seeking an experienced electrical estimator for a commercial project. The estimation will cover lighting installation, power distribution, and fire alarm systems. Requirements: - Accurate and detailed cost estimation - Use of existing detailed blueprints - Experience with commercial electrical projects Ideal Skills & Experience: - Electrical engineering background - Proficiency in estimation software - Strong attention to detail Please provide a sample of previous work. Deadline: Sunday
I need a licensed engineer to review and stamp my interior living space drawings for an ADU built from a steel building. The review is needed for city approval and must include: - Structural integrity - Electrical layout - Plumbing design Ideal skills and experience: - Licensed professional engineer (PE) - Experience with ADU projects - Knowledge of city approval processes and requirements
I'm seeking a comprehensive thesis on lifecycle assessment and lifecycle cost for Railway using ISO 14040 and ISO 15686-5 as methodology. Key Requirements: - In-depth knowledge of lifecycle assessment and lifecycle costing - Ability to conduct thorough research and present findings - Experience in writing academic theses at the master's level Ideal Skills and Experience: - Advanced degree in Engineering or related field - Proficiency in economic modeling and environmental impact studies - Excellent writing and analytical skills - Previous experience in thesis development or similar projects
I'm looking for Mathematics and Biomedical research expert and engineer to help out with project ideas and execution.
We are looking for an experienced Senior .NET Engineer to join our engineering team and help build high-performance data processing solutions. In this role, you will design and develop scalable backend systems, solve complex engineering challenges, and contribute to architecture decisions. You will work closely with product managers, data analysts, and engineers to deliver reliable, efficient, and secure systems. This position focuses on .NET development using C# in a modern microservices architecture. Important: Applicants must already be legally authorized to work in the United States. Visa sponsorship or immigration support is not available for this role. Responsibilities Technical Development Design, build, and maintain scalable microservices using .NET and C#. Develop and optimi...
We are looking for an Engineering Mathematics research expert for mathematical science projects. If you have the experience in areas of mathematical combined with sciences such as biomedical and engineering research project skills. This is a perfect match if your have several research published in researchgate.
I need an expert to overhaul the control electronics on our solid swimming pool cover and modify the control circuits. The goal is to improve existing functionality and enhance automatic cover operation. Key tasks include: - Improving existing control circuits - Enhancing automatic cover operation Ideal Skills and Experience: - Proficiency in electronics and control systems - Experience with automation and control circuit modification - Knowledge of pool cover or electric gate systems - Strong problem-solving skills
We are seeking an experienced electrical engineer to create four comprehensive study reports: Steady State Study Report, Dynamic Study Report, Power Quality and Protection Study Report, and Earthing Study Report. The ideal candidate will have a strong background in electrical engineering and excellent report writing skills. The reports should be detailed and accurate, providing insights into the electrical systems and infrastructure. PSCAD for dynamic studies and PSS SINCAL for steady state, protection, power quality, and earthing studies. 1. Steady State Study Report Covering load flow, voltage profile, thermal loading, reactive power performance, and contingency review. 2. Dynamic Study Report Using PSCAD, including assessment of plant response to disturbances, fault ride-through perf...
I need a design review for an electric heater with fan and heating element due to field failures. The specific issues are overheating and electrical shorts. Key Focus Areas: - Electrical Circuitry: Review and identify design flaws - Overheating: Analyze potential causes - Electrical Shorts: Investigate and recommend fixes Ideal Skills and Experience: - Expertise in electrical engineering - Experience with heating appliances design - Problem-solving skills for safety issues
I need help steering an LLM through a realistic engineering workflow on an open-source Python library. Your first step will be to choose a mature, well-documented GitHub repo that ships as a library or package and can be cloned and built with nothing more exotic than standard pip dependencies. Once the repo is agreed upon, you will frame a single, well-bounded engineering assignment for the model—perhaps a small feature, a non-trivial refactor, or a robust test suite—something neither superficial nor sprawling. From there you will run an iterative review loop: prompt the model, inspect its MR, request changes, and continue until the contribution is truly production-ready. That means the patch must follow project style, cover edge cases, include unit/functional tests, update do...
​Project Description: ​I am looking for a PhD-level Photonics/Quantum Engineer to develop a 100% accurate simulation and a certified hardware list (BOM) for a specific optical experiment. ​The goal is to analyze the fidelity of Gaussian States (Squeezed/Coherent) after a 10km fiber-optic delay line using a time-domain multiplexing approach. ​The simulation MUST include and validate the following chain: ​Optical Source: Phase-stable Laser (CW or Pulsed) at 1550nm + Squeezing Source. ​Encoding Stage: High-speed modulation (AM/PM) with specific Vpi and insertion loss constraints. ​Delay Line: 10km SMF-28 Fiber (including Rayleigh scattering and phase-drift modeling). ​Interference Stage: Local Oscillator (LO) synchronization and balanced beam splitting. ​Detection: Balanced Homodyne Detector ...
We manufacture washroom cubicles and need an experienced CAD drafter who can jump in at short notice. For every project I will send you the layout, panel dimensions and hardware details. Your job is to turn that information into: • Client sign-off drawings – clean, clearly annotated PDF sheets produced in AutoCAD • Manufacturing packs – one DXF and one STP file per panel, plus a compiled PDF set for workshop reference All files must originate from AutoCAD so that my internal team can edit them later if required. Accuracy is critical; hole centres, edge bands and any special cut-outs must match the information I provide. I have attached a completed project as a template so you can see layering, title-block style and the level of detail expected. If you are comfo...
I need to remove an internal weight-bearing basement wall (3 to 6 meters) and replace it with an RSJ beam. The wall is currently made of brick or block, and there is plumbing running through it that will need to be rerouted. Key Requirements: - Expertise in structural alterations and RSJ beam installation - Experience working with brick/block walls - Ability to safely reroute existing plumbing - Relevant certifications and insurance Ideal Skills and Experience: - Background in construction or structural engineering - Previous similar project experience - Strong problem-solving skills
Project Brief: Kinetic Pulse PCBA 1. Core Functional Requirements Power Input: Must accept AC input from a linear induction coil (approx. 3,000 turns). Energy Storage: Must use a Supercapacitor (1.5F - 2.0F / 5.5V) as the sole energy storage—No chemical batteries. Power Regulation: A boost converter must provide a stable 3.3V rail even as the capacitor discharges down to 0.7V. Power Efficiency: The entire system must be "Nano-power." Total standby/idle current must be < 1µA to ensure the device holds a charge. Timing Logic: An internal timer must trigger a 100ms audible alert (Buzzer) every 40 seconds. Pressure Sensing: The system must interface with a Force Sensitive Resistor (FSR). State 1: Visual Green LED alert when pressure is applied (> 50g). State 2: Visu...
I am seeking a qualified professional with demonstrated experience in both Engineering and Industrial Hygiene to develop a comprehensive, technically sound Industrial Hygiene (IH) proposal. The proposal must be written to a high professional standard and suitable for submission to corporate, regulatory, and/or government clients. The successful candidate must have strong knowledge of occupational exposure assessment, sampling methodologies (air, bulk, wipe, noise, etc.), ventilation evaluation, and regulatory compliance frameworks. Experience developing defensible IH sampling strategies, risk assessments, and technical scopes of work is essential. The final deliverable should reflect senior-level Industrial Hygiene competency (CIH-level quality), including clear objectives, methodology, Q...
- Perform full CFD combustion simulation of a small combustor chamber (LPG or propane fuel, non-premixed combustion model) in ANSYS Fluent Student Version only(max 1000000 cells). - Use a non-premixed PDF combustion model with my PDF table (already created), mass flow inlet BCs (air 0.338 kg/s, fuel 0.0106 kg/s), and correct velocity directions from dome holes. - Run mesh independence study (4–5 meshes) and report outlet total temperature, residuals, and computational time until mesh-independent result is achieved. - Extract and calculate convective + radiative heat flux or temp on liner walls, total heat loss to walls (target ~8–10% of heat input), and wall temperature distribution. - Perform **steady-state thermal analysis** inside Fluent: import the CFD heat flux or wall t...
Project Title: Medical Device V&V Testing — Contract Biomedical Engineer (Bay Area, 4-6 weeks) Description: We're an early-stage medical device startup preparing an IRB submission for an early feasibility clinical study of an Intermittent Hypoxic-Hyperoxic Therapy (IHHT) device. We need an experienced contract biomedical engineer to execute verification and validation testing on 3 prototype units in the San Francisco Bay Area, starting mid-April 2026. Scope of work: FiO2 & gas delivery characterization — measure oxygen concentration accuracy across the operating range (8-35% FiO2) using calibrated external oxygen analyzer and flow meter. Continuous logging over extended test sessions to characterize PSA cycling dynamics, transient behavior, and stability. Syste...
I am putting together an in-depth engineering study on today’s and tomorrow’s hydrogen landscape. The work has to cover the full chain—from the way we make hydrogen, through the options we have to store it, to the networks and carriers that move it—always with an eye on how these choices influence sustainable power projects. Here is what I need from you: • A rigorously referenced technical report that compares the main generation pathways, storage media, and transport modes, quantifying efficiency, cost, safety, environmental impact, and scalability. • An executive summary that distils the key engineering insights and recommendations for real-world deployment. • Any supporting calculations, models, or datasets (for instance, spreadsheets, Aspen/...
I have a small script that pulls plain-text content from a series of public web pages, but it has suddenly started throwing runtime errors before any data is returned. The pages themselves load fine in a browser, so the problem is clearly within my code or its dependencies. Here’s what you can expect from me: a zipped folder containing the current Python script, the list of target URLs, and a copy of the last error stack trace. I’ll also let you know which Python version and libraries (requests, BeautifulSoup, etc.) are in use so you can replicate the issue quickly. What I need from you: • Diagnose the exact cause of the errors • Deliver a clean, well-commented fix that reliably fetches all required text from each page • Briefly outline any library or env...
Here is what I need from you: • Live or recorded sessions that walk me through project setup, mesh generation, material assignment, heat-source definition, and result interpretation. Complete study of the software and make me good in it. • Worked examples for each process (arc, resistance, laser) . • Tips on choosing solver settings so runs finish in reasonable time without sacrificing accuracy. • A short checklist I can follow after the training to make sure every new model I build captures the right thermal outputs. I already know welding theory, so the focus should stay on Simufact’s interface, modelling strategy, and validation of the simulation against real-world weld data. Remote delivery is fine—screen-share, annotated PDFs, or short videos al...
Project Overview We are developing a small autonomous underwater vehicle (AUV) with a 127 mm outer diameter hull and 115 mm internal diameter tailcone. We are seeking a mechanical or robotics engineer to design a compact, robust, and easy-to-assemble control surface actuation system for the vehicle’s fins. The vehicle is designed to operate at depths up to 100 meters, and this depth requirement is a primary design constraint. The tailcone is fully flooded and components must tolerate hydrostatic pressure and long-term marine exposure. The final system should be mechanically straightforward enough that, in theory, a technically capable high-school student could assemble and service it. --- Design Objective Design an internal mechanism that: Actuates four external control fins...
Freelancer vs Upwork (2026) - An Honest, Side-by-Side Comparison for Businesses and Freelancers
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