Hire the Best Application Engineers

Available to start immediately. I build and fix real .NET & C# software. Click on Invite button to start conversation I’m a .NET Developer and C# Developer with 13+ years of experience working on production systems built in C#/.NET. Most of my work is focused on helping teams make their existing software more stable, scalable, and easier to evolve without risky rewrites. I’ve worked in long-term roles as a C#/.NET developer, often joining projects where the codebase already exists and needs structure, performance improvements, or careful modernization. 🧠 How clients usually come to me Very often, teams reach out to me as a .NET developer when they already have a product written in C#/.NET, but something isn’t working as it should. Changes are slow, bugs appear in unexpected places, or the architecture feels fragile. In those cases, I step in as a C# .NET Developer who understands how real systems grow over time and how to improve them without breaking production. Depending on the scope, I work either as a backend developer focused on logic and performance, or as a .NET Full Stack Developer when both backend and UI decisions need to be handled together. ⚙️ What I do in real projects Day to day, my work as a .NET Developer is very practical. I write and refactor C#/.NET, clean up .NET architecture, improve async flows, and make sure the application behaves predictably in production. In many projects, this naturally turns into .NET full stack work handling backend services, APIs, and UI integration where I step in as a .NET Full Stack Developer. When teams want a modern .NET Full Stack direction without splitting the codebase, I build new features or full applications using .NET MAUI/WPF/WinForms. I’ve worked with .NET apps both for new products and for migrations from older stacks like, where stability matters more than speed. 🧩 Types of systems I’ve worked on Over the years, I’ve worked as a .NET Developer, across different environments: 💻 Desktop software written in C#/.NET 🌐 Web platforms where I worked as a full stack developer on .NET backends 📱 Cross-platform apps built with .NET MAUI (Windows & Android only) 🧱 Larger products that required a true full stack developer approach 🔗 Mixed systems where .NET AI integration was part of the stack 🎮 Internal tools and simulators developed with C# 🤖 Careful use of .NET AI where it actually added value In several projects, I worked in React .NET setups, connecting React frontends to .NET backends while keeping responsibilities clean and clear. 🛠️ How I work with teams and data I’m comfortable joining existing teams and reading unfamiliar C#/.NET codebases. I focus first on understanding why decisions were made, then improving things step by step. I regularly work with SQL server, collaborate with Azure Data Engineer roles, and support data-heavy systems where performance & reliability are critical. This mix of responsibilities often places me in a .NET Full Stack Developer role even when the original task starts as pure backend work. 🛠️ Tech Stack .NET Framework, .NET 6 / 8 / 9 / 10 App Development - WPF, WinForms, WinUI, Blazor, .NET MAUI, MVVM Concurrency & Performance - Multithreading, async/await, Task Parallel Library Hardware & Protocols - Serial, Bluetooth LE, TCP/IP, UDP, RS232, RS422 Architecture & Quality - Clean Architecture, OOP, refactoring, performance tuning Security & Testing - Unit testing, Polaris, Coverity, SAST, DAST, threat modeling Data & Cloud - SQL Server, Azure Tooling - Visual Studio, VS Code, GitHub, GitHub Actions, Docker ✅ Why clients choose to work with me ✨ I think like a long-term .NET Developer, not a short-term task runner ✨ I write C# code that other C# developers can actually maintain ✨ I’m comfortable owning systems as a .NET Full Stack Developer ✨ I communicate clearly and avoid surprises ✨ I leave .NET full stack codebases cleaner and more stable than I found them 📌 Availability ✅ Available now 🌍 Remote-only ⏱️ Open to long-term collaboration If you’re looking for a .NET Developer, who can step into an existing system and improve it safely let’s chat. 👉 Send a message and we’ll review your setup together.

🚀 Hi, I'm Dmytro, I'm a Full Stack Developer AI with more than 8 years of experience building SaaS platforms, AI-powered applications, and scalable web products for startups, product companies, and growing businesses. As a Full Stack Developer AI, I've worked on MVPs, enterprise platforms, automation tools, and intelligent web applications used by thousands of users worldwide. 💡 My primary focus as a Full Stack Developer AI is designing complete software solutions that combine modern frontend technologies, scalable backend architecture, and artificial intelligence. As a Python Full Stack Developer, I enjoy transforming complex business requirements into reliable, maintainable, and high-performing products that deliver measurable business value. 🤝 Throughout my career as a Full Stack Developer AI, I've collaborated with designers, product managers, AI engineers, DevOps specialists, and business stakeholders. I believe every SaaS Developer should understand not only software architecture but also customer needs, product strategy, and long-term scalability. 🛠️ Technologies I work with As a Python Full Stack Developer, my primary stack includes: • Python • Django • Flask • FastAPI • React • Next.js • TypeScript • JavaScript • Node.js • PostgreSQL • MongoDB • Redis • Docker • AWS • OpenAI API • LangChain 📈 Over the years, I've helped companies hire a Full Stack Developer AI capable of building production-ready SaaS platforms, integrating AI into existing products, and modernizing legacy systems. As a SaaS Developer, I focus on creating software that remains scalable as businesses grow. ⚙️ What I can help with As a Full Stack Developer AI, I can help with: • Building AI-powered SaaS platforms from scratch • Developing scalable web applications • Backend architecture and API development • AI integration using OpenAI and LLMs • Workflow automation and intelligent assistants • SaaS architecture and multi-tenant systems • Database design and optimization • Authentication and authorization • Payment gateway integration • Cloud deployment and CI/CD • Performance optimization • Legacy system modernization • Bug fixing and long-term maintenance 🔧 Many companies choose me as a Python Full Stack Developer because I can take ownership of the complete product lifecycle—from architecture and backend development to frontend implementation and AI integration. As a SaaS Developer, I always balance technical quality with business objectives. 🌐 I've worked as a Full Stack Developer AI on startup MVPs, enterprise platforms, internal business systems, CRM solutions, marketplaces, analytics dashboards, and AI automation platforms. My experience as a Python Full Stack Developer allows me to quickly adapt to different domains, engineering processes, and development teams. 🧩 Beyond application development, I have strong experience designing scalable backend systems, cloud infrastructure, and AI services. This enables me to work not only as a Full Stack Developer AI, but also as a technical partner capable of making architectural decisions that support long-term product growth. 💻 I've worked with: • PostgreSQL • MySQL • MongoDB • Redis • Supabase • Firebase • AWS • Docker • Kubernetes • Python • Node.js • React • OpenAI API • LangChain 🔗 This broad technical background allows me to deliver complete products as a Python Full Stack Developer, while my experience as a SaaS Developer helps businesses build reliable platforms that are secure, maintainable, and ready to scale. 🎯 How I work I believe a great Full Stack Developer AI should think beyond writing code. Understanding product strategy, user experience, software architecture, AI capabilities, scalability, and maintainability is equally important. 🤝 As a Python Full Stack Developer, I value ownership, transparency, and close communication with clients. Every SaaS Developer should build software that is easy to extend, simple to maintain, and capable of supporting future business growth. 📚 I've also contributed in areas such as: • Software architecture • AI solution design • Technical planning • Code reviews • Database optimization • CI/CD pipelines • Agile development • Team collaboration • Mentoring developers 🚀 Whether you need a Full Stack Developer AI for a new AI-powered product, a Python Full Stack Developer to strengthen your engineering team, or a SaaS Developer to build a scalable cloud platform, I'd be happy to help. My goal is to deliver software that combines modern engineering practices, artificial intelligence, and business value. 📊 Companies often hire a Full Stack Developer AI to build intelligent SaaS platforms, automate business workflows, or integrate generative AI into existing products. Others look for an experienced Python Full Stack Developer to modernise legacy systems. ✨ If you're looking for a Full Stack Developer AI, I'd be happy to discuss your project. Best regards, Dmytro

I have been working as a reverse recruiter for more than 5 years, successfully placing many candidates. I specialize in tailoring resumes to ensure they are ATS-friendly for specific job applications. Additionally, I can target specific jobs through Boolean searches. I have good connections with US recruiters and HR managers on my LinkedIn profile. Many clients have been satisfied and many projects have been successfully done. Most of my clients gave my list/work a rate of 98% - 100% validity. My Expertise in Lead Generation Are: ✔ Resume Tailoring ✔ Finding Jobs ✔ Admin Work ✔Job Search Strategy ✔Job Search Assistance ✔ Web Research ✔Job Application Submission ✔Job search sites; Indeed, Ladders, Glassdoor, Dice Simple Hired, Monster, Linkedin, Hiring Cafe, Carrier Builder, USA Jobs, Zip Recruiter, Built-In, Zip Recruiter, TheJobNetwork, Adzuna, Job Serve, Snagajob, Lensa, Ladders, The Muse, FlexJobs, NeXxt, CareerBliss ✔ Web Research / Internet Research Feel free to schedule a call and I'll walk you through my current and past projects & solve your specific problem. Thank You for visiting my profile

Nobody has ever said "wow" while I explained what I do… (Even if they do, it sounds like this - 🥱) They say it 18 months later, when the app still works and nobody had to rewrite it. That's the "wow" I like! Full stack developer with 10 years of experience | top 1% on Upwork (Expert-Vetted) ✅ I turn ideas into real applications your users can depend on 💡 Recent work: 🔹 Product Architect at Upwork, leading a team of 100+ engineers within Upwork's Engineering Talent Cloud 🔹 Led frontend for Autobound's AI sales automation platform - grew from a single-engineer startup to $4M raised and millions in revenue (Vue.js/Nuxt + Chrome extension + micro-frontends) 🔹 Built full stack for Augmento's AR/VR product - used by 1,000+ brands and 100K users across retail and real estate 🔹 Migrated DriverHRIS - 1,000+ screens from Vue 2/.NET to Vue 3 + Node.js microservices, with a 10x (1,000%) performance gain 🔹 Rebuilt Wawibox (German dental marketplace) - full Nuxt 2 → Nuxt 3 SSR → Nuxt 4 migration, 80% faster load time I also co-founded Softonix, a 25-engineer Vue.js | Node dev team in Lviv 🇺🇦 - so if your project grows past one developer, I can scale the team without handing you off to strangers) 🎁 Something extra: I'm running free dev + AI-readiness audits for a few teams right now. Send me your repo or a quick walkthrough of your delivery flow (Figma → Jira → GitHub → review), and I'll come back with: 🔍 where your velocity is actually leaking - review bottlenecks, rework, estimates that never hold 🏗️ how your codebase really looks on quality, architecture, and performance 🤖 how much more your team could be getting out of AI than they are today You keep the findings whether we end up working together or not! Want to scope something, or should I just run the audit first? I usually reply within an hour 🚀 Why should you hire me as a Full Stack Developer? ▪ 200+ successful projects across fintech, healthcare, e-commerce, HR tech, logistics, and AI. ▪ 100+ happy clients who have seen tangible business growth. ▪ Expert in Vue.js, Nuxt, React, Next.js, Node.js, TypeScript, .NET, PostgreSQL, AWS. ▪ 500+ API endpoints and 50+ microservices designed, documented, and shipped to production. ▪ 30+ legacy rescues and framework migrations completed with zero downtime. ▪ 60+ production applications launched and still running - some for 8+ years. ▪ Delivered investor-ready MVPs in 4-6 weeks for urgent launches and funding rounds. ▪ Built cross-platform products for web, mobile (iOS & Android), and desktop on one shared codebase. ▪ 100+ code audits and architecture reviews delivered for founders, CTOs, and investors. ▪ 40+ engineers hired, trained, and mentored over the last 6 years. ▪ 100% Job Success across 10 years of client work.

I am a professional Application Developer with a passion for building efficient, scalable, and user-friendly web solutions. With years of hands-on experience in backend and full-stack development, I specialize in creating robust applications that help businesses streamline their workflows and achieve their goals. I'm good at what I do because I have a passion for it. I was making websites and apps long before ever getting paid. This plus my experience in a wide variety of projects gives me the knowledge to cover just about any position in development.

C++ / Qt engineer, 20+ years. I build the software that runs machines and instruments: embedded Linux firmware, Qt/QML operator HMIs, and the cross-platform desktop workbench engineers use to configure, calibrate and log. RECENT WORK - HPLC syringe pump - control software for an analytical laboratory instrument. - Firmware, control suite and workbench for the Multistage cable-stripping machine. - ScanScore / Forte / Bandora - 8 years on cross-platform music-notation software in Qt: optical score recognition, MIDI, PDF export. - Debian POS server - multithreaded C++ service, PostgreSQL, ESC/POS thermal printing, deployed onsite. 18,000 hours on Upwork at 100% Job Success, Top Rated Plus. WHAT YOU GET I lead a small Lviv team - firmware, HMI and desktop under one contract - and I stay hands-on in C++/Qt myself. You talk to me, not to an account manager. - Embedded & HMI: STM32, Arduino, embedded Linux, Qt/QML touch panels, industrial operator screens. - Desktop: cross-platform Qt for Linux and Windows; C#/.NET (WPF, WinForms, DevExpress) when the Windows side needs it. - Data: PostgreSQL, MS SQL, multithreaded C++ services, reporting, printing, installers. HOW I RUN PROJECTS - YOU SEE EVERYTHING Offshore teams fail on visibility, not on code. The process is built to remove that risk: - Private Jira server - you get an account and watch the board in real time. - Every code change is linked to its Jira task. Nothing lands untracked. - Code lives on our BitBucket Git server; you get access. - Every reported developer hour carries the developer's own comment explaining it. - Weekly and monthly reports, generated - not improvised. - A working demo build every week. You judge progress by running it, not by reading a status update. Scope is agreed as Work / Time / Budget with defined milestones before anything starts. Background: SoftServe 2002-2008, developer to tech lead; then my own team since 2014. ALSO AVAILABLE: legacy Windows rescue - MFC, Win32, COM/ATL, Visual C++ 6.0, WinForms/.NET. The desktop applications other developers won't touch. I have been maintaining and modernizing them since 2002. Send me the machine, the instrument or the old application - I will tell you honestly whether we are the right fit.