Working as a developer freelancer for the last 15 years: Data Science, Neural Networks, Python, Matlab, Fortran etc. Hold a Ph.D. in theoretical physics with expertise in strongly correlated electrons, optical lattices, and phase transitions. Fluent in Ukrainian and Russian, with advanced English proficiency, enabling me to write scientific papers and engage in effective communication as well as do EN-UA and EN-RU translations.

⭐️⭐️⭐️⭐️⭐️ 5.0 I am a research associate and data analyst with strong expertise in environmental science, air quality modelling, climate policy analysis, statistical modelling, and academic research. I support clients with high-quality technical analysis, data-driven research, scientific writing, and coding across a wide range of academic and professional projects. My technical skills include data science, machine learning, statistical analysis, Python, R, Fortran, geospatial analysis, air pollution modelling, climate and environmental data analysis, and scientific visualization. I can help with data cleaning, exploratory data analysis, model development, regression analysis, machine learning workflows, code debugging, automation, reproducible research pipelines, and interpretation of complex results. Alongside my technical work, I also provide academic writing, editing, proofreading, and research mentoring services. I help students, researchers, and professionals improve the clarity, structure, coherence, and academic quality of their work. This includes literature reviews, methodology sections, research proposals, dissertations, journal manuscripts, reports, presentations, and data analysis write-ups. I also specialize in improving and humanizing AI-generated texts. I can revise AI-assisted writing to make it sound more natural, original, academically appropriate, and aligned with the intended audience, while preserving the author’s ideas and voice. My approach is careful, reliable, and detail-oriented. I aim to deliver work that is technically accurate, clearly written, and suitable for academic, professional, or publication purposes. Whether you need support with data analysis, coding, research design, scientific interpretation, academic writing, or editing, I can help turn complex ideas and datasets into clear, polished, and meaningful outputs Some of my previous client's feedback: "He has great knowledge and provide the information which I need immediately" "He is really easy to contact and he did a great job" "The job Nosha completed was excellent. He was very easy to work with, understood perfectly what I needed and was always available to talk about the project. He completed the work ahead of time and with very high quality. I fully recommend him" "He understood the job very quickly and did exactly as per requirement. Submitted on time. Punctual. And knows his work well. Very happy with his work." "He is a real creative and resourceful software engineer. He is very professional. I really recommend him for any work" "Nosha did a good job and is a great self-starter. Did not have any questions and got the job as I asked. Would highly recommend him."

- I specialize in R and its scientific ecosystem, particularly the tidyverse. - I also have extensive experience with Fortran, especially for performance-intensive tasks. - With more than 12 years working with academic documents in LaTeX, I’ve contributed to theses, research papers, and scientific publications. - I’m skilled at optimizing scientific code, improving both execution time and memory usage through profiling and efficient algorithm design. - I believe that clear and consistent communication is key to delivering top-quality work—let’s keep the conversation going! - My combined expertise in R and Fortran allows me to develop robust, efficient solutions for applications ranging from statistical modeling to numerical simulations. -N8N: My combined experience in programming and editing allows me to build clear, efficient, and reliable automations. I create smart workflows using n8n, designed specifically to meet real business and project needs.

Software programmer with Linux, Windows development knowledge, more than 15 years of experience. C, C++, C#, Assembly, Python, Javascript, Golang, Fortran, Rust, Bash, Powershell. Compilers, debuggers, build tools, repository tools, libraries, frameworks, numerical and data processing.

12 years experience in CFD analysis and CAD with proficiency in following tools: CFD: OpenFOAM, Ansys Fluent, Basilisk, CharLES Cascade, CONVERGE CAD: Blender, FreeCAD, AutoCAD FEA: Salome, Code_Aster Pre-processing: Ansys ICEM CFD, Ansys Gambit, Gridgen, Gmsh Post-processing: Paraview, Tecplot Programming: C, Python, Fortran, MATLAB, MPI, C++ Post-doctoral experience: • Modeled particle-laden multiphase turbulent flow to address challenges in particle-wall interactions, and moving contact line problems. • Identified strategies to develop hierarchical multiscale method for particle-laden flow with coupling across micro and macro scales. Ph.D. experience: • Successfully integrated hybrid RANS-LES methods to the in-house computational solvers for rotorcraft applications. • Validated implemented techniques by conducting extensive simulations over 2-D and 3-D unsteady turbulent flows. Masters experience: • Developed framework to model complex flow through supersonic bypass jet engine. • Completed turbulent flow simulations to understand flow predictions in non-circular bypass channels. Excellent communication and writing skills acquired through conference presentations, technical writing and collaboration with fellow researchers.

I am a software reverse engineer: * Are you interested in analysis of software (or device firmware) you don't have source code for? * Don't know how to extract your own data locked in a proprietary data format? * You want interoperability with a proprietary software or online service? * a vendor or supplier locks you to their overpriced closed source solution? * A company is out of business and you need to migrate or to live somehow without official support? Contact me. Requests for reverse engineering of firmwares for any kind of devices and software for all operating systems are welcome. Background: I am an High Performance Computing specialist ( keywords: "super computers" / "number crunching" ) working mostly with huge Linux systems and math related tasks. I am also a scientist specializing in linear algebra. I have somewhat outdated formal training in cryptography (and cryptography related math) but I am definitely not an expert in the field.

Ask me for any data modelling project-- I'll work through the Preprocessing, Feature Selection and Model Building phases to give you a predictor, classifier or a recommender. I can also advise you on the best model that would fit your data to approach questions or objectives you have in mind. And when it comes to Academics-- whether teaching courses to beginners, or advising scholars and scientists in any field on their cutting edge research involving AI/ML, or writing journal/conference papers and getting them through across reviewers' comments, you will perhaps find few freelancers with my expertise, experience and skill. With a PhD, one-year Postdoc... plus 12 years experience, I am teaching Numerical Methods, Operations Research and Machine Learning in a premiere technological Institute. I have a couple of PhD scholars in the field of evolutionary algorithms (GA/GP), swarm intelligence (ACO/PSO) and Rough-Fuzzy hybridization, whose research I supervise. Machine Learning, Artificial Intelligence, and Evolutionary Optimization are my major traits. I have a profound knowledge in Fortan 77/90, and moderate expertise in C, while I use Python or R for most of my machine learning projects. I also have a love for LaTeX and TikZ, on which I work in between brainstorming projects. Having successfully completed 75 projects on Upwork with excellent ratings in each, and a consistent Top Rated status, I'm committed to deliver the highest level of satisfaction to my prized clients. I work throughout the week, targeting complicated and challenging projects with focus on quality to exceed your expectations.

PhD in Mechanical Engineering with over 10 years of experience in both FEA and experimental work. In addition, I also have a solid experience in programming and optimisation using MATLAB/Python, Skills: ✔Finite Element Analysis using ABAQUS ✔CAE design using Solidworks ✔Modelling using FORTRAN subroutines (UMAT/VUMAT/USDFLD/DFLUX/DLOAD... etc) ✔MATLAB and Python Scripting ✔Modelling of composite materials (Carbon Fibre, Glass Fibre..etc) ✔Thermo-mechanical modelling ✔Damage and failure analysis ✔Static and Dynamic (Implicit/Explicit) Analysis ✔Fatigue analysis ✔Elastic, plastic , viscoelastic, hyperelastic and hyperfoam material analysis ✔Image Processing (ImageJ, Fiji, MATLAB, Python) Communication is a great way to start working with me so feel free to contact me for more information!

Are you looking to accurately predict your product’s behavior, assess its load capacity, or identify weak areas and potential optimizations? I’m a mechanical engineer with over 15 years of experience in advanced Finite Element Analysis (FEA). I specialize in building robust and validated numerical models to evaluate structural performance under real-world conditions. My simulations help you enhance design reliability, optimize weight and stiffness, and reduce development costs. Let’s work together to make your design stronger, smarter, and safer — through advanced FEA modeling! ✪ ABAQUS Expert (Standard/Explicit, Parametric Modeling, Scripting & User Subroutines) ✪ Composite Materials (Multi-layer, Fiber-reinforced Structures) ✪ Advanced Material Models: Elasto-plastic, Hyperelastic, and Hyperfoam ✪ Analysis: Static, Dynamic, Thermal-Stress, and Fatigue ✪ Detailed Structural Analysis (Stress/Strain, Vulnerable Areas, Weld Bead Analysis) ✪ Component Design Optimization (Lightweighting, Rigidity, Durability) ✪ Multi-body Mechanism & Spring Design Click “Invite to Job” or send a quick message — I’ll be glad to discuss your project and propose the best simulation approach.

- 8+ years of experience in C++, C# - Windows services, Desktop app development - Expertise in RPC, SOCI, SQLite, MySQL, Postgres - Skilled in multithreading, IPC, and performance optimization - Development of scalable backend services and distributed systems - Proficient in CMake - Strong debugging skills with GDB, Valgrind - Unit & integration testing using GTest - Experience in industrial automation, including .NET-based systems communicating with PLCs, OPC servers, and ERP environments, as well as serialization/aggregation solutions for packaging lines - Industrial automation (PLC, OPC UA, MQTT)