I'm a Full Stack Developer and .NET Developer with 10+ years building web applications that businesses actually run on. I take an idea and ship it — front end, back end, database, deployment — and I've done it for products still serving customers a decade later.
✦ WHAT I DO BEST
My core stack is .NET and C#. As a .NET Developer I build secure, scalable back ends with .NET Core and ASP.NET Core, expose them as clean ASP.NET Web APIs (REST), and back them with Entity Framework and SQL Server, PostgreSQL. As a Full Stack Developer I pair those APIs with responsive front ends in Angular, React, or Blazor, then deploy and scale on Azure with Azure DevOps, Docker, and CI/CD. When a product needs AI, I wire proven models — often through a thin Python layer — into the application without breaking what already works. And when a templated WordPress or Shopify build has hit its ceiling, teams bring me in to rebuild it as a custom .NET web application that can actually grow.
✦ PROOF OF WORK
Longevity is the point. I once took a rough idea from an automotive client and built it into an e-commerce platform that has served customers for nearly 15 years and still runs today. As the lead .NET Developer on Launch Control, a real-estate SaaS, I refactored the core and made the system 50x faster. I also built SiftScore, an AI-powered talent-acquisition platform that uses the OpenAI API to source and score large datasets. Across fintech, real-estate, and healthcare I've owned the full lifecycle as a Full Stack Developer: requirements, architecture, build, go-live.
🚀 SaaS MVP (From Idea → Production)
When a client starts from a rough idea, I take it the full way: requirements, architecture, prototyping, build, and go-live on Azure. As a Full Stack Developer I've shipped .NET SaaS MVPs for fintech, real-estate, and conveyancing platforms — clean, maintainable code with the scalability and monitoring to grow once real customers arrive.
✦ AI Integration for Existing Products
I add AI features when a product actually needs them. The fastest, most cost-efficient path is usually integrating a proven model — OpenAI, Claude, or Gemini, often through a thin Python layer — rather than training your own. I add chatbots, automation, and smart search to existing web apps. Most AI features fail not because of the model but because the surrounding .NET architecture wasn't built to support it — and that's where a senior Full Stack Developer earns their keep.
⚙️ Modernizing Existing .NET Systems - without the rewrite
If you have a .NET or C# application that needs work, I optimize performance, refactor legacy code, upgrade aging ASP.NET back ends, and migrate data access to Entity Framework Core — refactored against SOLID principles, without freezing feature work. Stuck on an old ASP.NET WebForms app? You don't have to gamble on a big-bang rewrite. As a .NET Developer I migrated a WebForms spare-parts store — 20M+ products across 100+ suppliers — to ASP.NET MVC by running both side by side in one solution, so the business kept selling while the modernization happened underneath it. The same incremental approach moves teams off PHP, Laravel, or legacy WordPress builds and onto a maintainable .NET stack: ship value continuously, retire old code gradually, never go dark.
✦ Legacy .NET project modernization
Old code isn't the enemy — downtime is. As a .NET Developer, I modernize legacy ASP.NET and ASP.NET MVC systems by introducing a clean API layer, migrating data access to Entity Framework Core, and refactoring against SOLID principles, all without freezing feature work. As a Full Stack Developer, I migrate the application page by page behind a feature flag, so new and old run together in production and you can switch any screen over — or roll it back instantly — without disrupting users. Whether it's an ASP.NET MVC application that has grown brittle or a WebForms system that needs a path forward, I find the route that lowers risk: incremental, tested, and reversible at every step.
✦ ENTERPRISE-GRADE .NET ARCHITECTURE
My work as a Full Stack Developer goes deeper than features. On a large enterprise fintech platform built on microservices, as a Full Stack Developer I designed how the team builds — onboarding developers, setting architectural standards, and structuring a clean, maintainable .NET codebase that scales. As a .NET Developer with a decade across .NET Framework, .NET Core, ASP.NET, and ASP.NET MVC, plus an M.Sc. in Applied Mathematics behind the design decisions, means I build systems meant to last years, not quarters. I focus on web rather than native mobile apps in Flutter or React Native; on the .NET side I also ship cross-platform with .NET MAUI. I'm a web developer — my C# and .NET expertise powers web applications.
✦ HOW WE'LL WORK
If you need a Full Stack Developer or .NET Developer who can take something from rough idea to production — and keep it running for years — let's talk about the fastest path to shipping it.
Angular
JavaScript
Web Application
React
Node.js
.NET Core
C#
API Integration
Full-Stack Development
.NET Framework
ASP.NET MVC
ASP.NET
ASP.NET Core
WordPress
Microsoft SQL Server
Microsoft Azure
PHP
Python
Software Development
ASP.NET Web API
Andrei M.
Warsaw, Poland
$45/hr
5.0
29 jobs
✅ .NET Full Stack Developer 20+ years of experience
✅ Build powerful .Net solutions that drive business growth
✅ C# .Net developer with 15+ years of experience
✅ Developed 50+ applications
✅ Crafted 200+ user-friendly interfaces that drive real business results.
The clients say
"It doesn't feel like outsourcing, but instead like we have our own remote developers."
"They had great soft and hard skills and were full of ideas and drive!"
I lead the fullstack and mobile development team at Itexus, a professional software development and consulting company focused on Fintech, Insurance, Healthcare, etc.
I have 20+ years of experience in the .net architect development of web and mobile applications, .net, python, node.js, java developer as well as javascript, react .net, angular, AI frameworks and libraries.
👨💻.NET Full Stack Expertise
.NET full stack – strong background in End-to-end development from database to UI using Microsoft stack
.NET Core – deep expertise, cross-platform backend services
.NET Angular – Full stack development on .NET backend and Angular frontend for enterprise-grade solutions
.net core angular – Building complete systems with seamless backend–frontend integration
.NET Core Angular – Scalable and secure web apps using .NET Core and Angular
Angular .NET solutions – Using Angular for UI and .NET for API and business logic
.net core developer – Proven experience delivering high-performance backend solutions using .NET Core
.net core react – Building robust, scalable web applications with .NET Core APIs and React frontends
c# .net developer – End-to-end development expertise using C# and the .NET ecosystem
c# .net core – Advanced solutions built on C# with .NET Core for modern, cross-platform applications
👨💻 BACKEND Development
Python: Expert in Python for server-side development
Frameworks: Proficient in Django and Flask for building web applications
Databases: Skilled in SQL, PostgreSQL, MySQL, and MongoDB for efficient data management
Architecture: Experienced in applying MVC patterns for scalable applications
APIs: Capable of integrating external services through REST and GraphQL
👨💻 FRONT END Development
Proficient in HTML5, CSS responsive, JavaScript
Experienced in React.js, Angular, Vue.js, react native, ionic, xamarin developer
Responsive, cross-browser, ui/ux designer, ux/ui dashboard, ui ux designer app
👨💻AI TOOLS
OpenAI API, DeepFace, ML/DL frameworks (TensorFlow, Keras, PyTorch, Scikit-learn), LangChain, Mistral, AgenticAI, Transformers
RAG + custom AI tools: Document recognition and processing, Market Grabber, project management bots, AI for telephony, video/audio analysis
Mobile App Development
Native Mobile Development: Android, Kotlin, Java, iOS, Swift, KMP, KMM.
Cross-Platform/Hybrid App Development: Flutter, Swift, Objective C, React Native, Xamarin, MAUI.
General Expertise
Website & Full Stack Development: Full stack development with ai .net full stack developer, .net software engineer, .net programmer, full stack developer, ai python full stack developer django, full stack web developer, full stack development, cms developer
DevOps/DevSecOps: AWS, Azure, Docker, Kubernetes, GitLab-CI, Ansible, Terraform, etc
Cross-platform app building with three.js, web application design, webflow web designer, website builders
Integration tools: Data integration, websockets, ABP Framework, discord, Autotask
Experienced in .net core web api, fullstack .net developer roles, with strong skills as a .net specialist. Skilled angular .net react developer, java developer with solid c sharp expertise. Worked on kogito for business automation, delivered ui ux-focused solutions. As an azure data engineer, handled scalable data pipelines. rust developer, python projects include backend developer tasks. Built app as a xamarin and web developer using java and javascript. Skilled in postgresql and web scrapping. Maintained legacy systems with .net webform. Collaborated with nft marketers, managed nft collab manage tasks. Full stack with react nodejs, modern react, including react typescript, react native developer roles. Acted as product owner in agile teams. Cloud deployments done on azure. Built interactive UIs using blazor.
Why Choose us
Microsoft certified talented developers and senior .net developer team
High QA standards, including qa engineer roles
Modern solutions: NFT programmer, metaverse, Microsoft .net, windows 10, Power Apps developer, SharePoint, market grabber
Scalable team: full stack software developer, front end programmer, ios developer, ui ux designer
Industries
Banking, Trading, Cryptocurrency, Asset Management, Lending, Retail, Real Estate & Property Management, Food Delivery, Entertainment, Hospitality, Construction, Sports & Fitness, Travel & Tourism, Wellness, Medical Dashboard, Marketplace, E-commerce, Automotive, Human Resources, Education, E-learning, AI Assistants
Seek new projects to put our .net ai, bring value to individuals, startups, companies.
Angular
JavaScript
TypeScript
Web Application
React
C#
.NET Framework
ASP.NET Core
Mobile App Development
Android App Development
iOS Development
Artificial Intelligence
AI Development
Android
AI Agent Development
Python
Node.js
React Native
MySQL
Django
Tatsiana S.
Warsaw, Poland
$35/hr
4.9
1 jobs
Hi! I'm Tanya, a Technical Virtual Assistant and Angular Developer based in Poland.
Before becoming a Frontend Engineer, I worked for 5 years as a Civil Engineering Cost Estimation Engineer. A major part of my role involved creating, organizing, and maintaining large Excel spreadsheets for material estimates, bills of quantities, project documentation, and engineering reports. Accuracy and attention to detail were essential, as even small mistakes could affect project planning and costs.
Today, I have over 7 years of professional experience as a Frontend Engineer working with international clients. Although my current profession is software development, I've always genuinely enjoyed working with data, spreadsheets, and structured information. I find it satisfying to organize messy data, improve accuracy, spot inconsistencies, and turn information into something clear, reliable, and easy to use. My technical background has made me detail-oriented, analytical, and highly organized—skills that are just as valuable for Data Entry and administrative work.
I'm currently available for projects involving:
• Data Entry
• Microsoft Excel & Google Sheets
• Web Research
• Data Collection & Data Cleaning
• PDF to Excel/Word Conversion
Because I'm a software engineer, I learn new tools quickly, work comfortably with different online platforms, and can follow detailed instructions with precision. I understand how important accuracy, confidentiality, and meeting deadlines are, and I always strive to deliver work you can rely on.
If your project also requires technical support, I can also help with:
• Angular Development
• TypeScript & JavaScript
• HTML & CSS
• Frontend Bug Fixes
• Website Updates & Maintenance
Whether you need someone to organize thousands of records, research information, update databases, or assist with a frontend task, I'd be happy to support your project.
I'm reliable, responsive, easy to communicate with, and committed to delivering high-quality work on time. I look forward to working with you!
Angular
JavaScript
TypeScript
Data Entry
Microsoft Excel
Google Sheets
Front-End Development
Notion
Jira
HTML5
Git
CSS 3
Amir N.
Warsaw, Poland
$45/hr
4.6
25 jobs
🥇 𝗧𝗼𝗽 𝟭% 𝗼𝗻 𝗨𝗽𝗪𝗼𝗿𝗸. 🇺🇸 𝗨𝗦 𝗦𝗠𝗕 ,mobile 𝗮𝗻𝗱 𝗦𝗮𝗮𝗦 𝗳𝗼𝗰𝘂𝘀.✅ 𝗦𝘂𝗰𝗰𝗲𝘀𝘀𝗳𝘂𝗹𝗹𝘆 𝗹𝗮𝘂𝗻𝗰𝗵𝗲𝗱 𝗮𝗻𝗱 𝘀𝗰𝗮𝗹𝗲𝗱 𝗔𝗜 & 𝗦𝗮𝗮𝗦 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝘀 𝗳𝗼𝗿 𝟭𝟬𝟬+ 𝗰𝗹𝗶𝗲𝗻𝘁𝘀. 🏅 𝗢𝘃𝗲𝗿 $𝟯𝟬𝗠 𝗶𝗻 𝗳𝘂𝗻𝗱𝗶𝗻𝗴 𝗿𝗮𝗶𝘀𝗲𝗱 𝗯𝘆 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗜’𝘃𝗲 𝗯𝘂𝗶𝗹𝘁. 🗣 𝗣𝗮𝘀𝘀𝗶𝗼𝗻𝗮𝘁𝗲 𝗮𝗯𝗼𝘂𝘁 𝗰𝗹𝗲𝗮𝗿, 𝗽𝗿𝗼𝗮𝗰𝘁𝗶𝘃𝗲 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻. ☑️ 𝗢𝗻-𝘁𝗶𝗺𝗲 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘆, 𝗲𝘃𝗲𝗿𝘆 𝘁𝗶𝗺𝗲. ❌ 𝗡𝗲𝘃𝗲𝗿 𝗼𝘂𝘁𝘀𝗼𝘂𝗿𝗰𝗲𝗱. 🎯 𝗧𝗼𝗽 𝗿𝗮𝘁𝗲𝗱 𝗯𝘆 𝗖𝗹𝘂𝘁𝗰𝗵 𝗮𝘀 𝗮 𝗹𝗲𝗮𝗱𝗶𝗻𝗴 𝗔𝗜 𝗱𝗲𝘃 𝗳𝗶𝗿𝗺 𝗶𝗻 𝗦𝗮𝗻 𝗗𝗶𝗲𝗴𝗼, Ca📄 𝗟𝗼𝗻𝗴-𝘁𝗲𝗿𝗺 𝗰𝗹𝗶𝗲𝗻𝘁 𝗿𝗲𝗹𝗮𝘁𝗶𝗼𝗻𝘀 (𝟳𝟬% 𝗿𝗲𝘁𝗲𝗻𝘁𝗶𝗼𝗻).
💻 Why me?
- I offer free technical consultations, no strings attached.
- I provide a 6-months warranty period.
- I don’t outsource work to third parties.
I can help you conceptualize, build, and integrate complex software solutions. I never break the trust of my customers by unveiling any data related to their projects.
I am willing to sign an NDA to ensure that your confidential information is protected.
💻 My areas of expertise include:
- Web development
- Mobile development (iOS and Android)
- AI development
- UX/UI design
From filling in gaps to full-cycle software development, I will get you covered.
💻Tech stack:
- LANGUAGES: JavaScript, TypeScript, Python
- FRONTEND FRAMEWORKS: Angular 2+, React.js, Vue.js
FRONTEND TECHNOLOGIES: HTML5, CSS3, sass, Bootstrap, REST API, GraphQL API, Redux, RxJS, Vuex, Material UI, DOM
Realtime And Messaging Technologies: RabitMQ, Socket.IO, WebRTC, Agora.io
BACKEND FRAMEWORKS: Express, NestJS, Adonis.js, FeathersJS, Loopback, Django Rest Framework, Flask
BACKEND TECHNOLOGIES: Node.js, PostgreSQL, MySQL, MongoDB, SQLite, Firebase, Redis, ElasticSearch
MOBILE: React Native, Swift, JAVA, Kotlin, Ionic, Native-Script
TRACKING SYSTEM: Trello, Jira
SOURCE CONTROL: GIT
ADDITIONAL: Ngnix, apache, pm2, Docker, Jenkins, AWS, DigitalOcean, Google Cloud, FCM, PUSHER
Amazon Iot-core, Amazon EC2, Dynamo DB, AWS Elastic Beanstalk, AWS S3
My biggest motivation is to create value for clients. Over the years, I have helped hundreds of businesses to grow online. I have extensive experience in:
- Finance
- Healthcare
- Manufacturing
- Transport
- Electronics
- Education
- Telecom
- Construction
- Music
- Retail & eCommerce
Contact me to get a free consultation on your software development project.
Angular
React
Node.js
App Development
Startup Company
Swift
React Native
Python
Database
SaaS Development
Web Development
Full-Stack Development
AI Development
AI Consulting
Kirill K.
Krakow, Poland
$40/hr
4.9
11 jobs
With over 15 years of experience as a senior software developer, I have honed my skills in Python, .NET, ASP.NET, C#, Node.js, and modern front-end frameworks such as React, Angular, and Vue. My extensive background in software development and engineering positions me perfectly to deliver high-quality, AI-enabled solutions for your project.
Here's a brief overview of my expertise:
🔸C# Programming: Proficient in C# with extensive knowledge in object-oriented programming, design patterns, and software architecture. I have developed numerous applications and tools that leverage C# for maximum efficiency and performance.
🔸.NET & ASP.NET Development: I have a decade-long experience in building robust, scalable, and high-performance applications using the .NET framework. My expertise includes developing web applications, APIs, and enterprise solutions with ASP.NET Core.
🔸Python Development: Experienced in Python for backend development, automation, data processing, and AI/ML integrations. I leverage Python's rich ecosystem including FastAPI, Django, and Flask to build scalable and efficient solutions.
🔸JavaScript, TypeScript & Node.js: Skilled in server-side development with Node.js, creating fast and reliable back-end services with Koa, Express, Nest.js, and Hapi. Additionally, my JavaScript expertise spans both front-end and back-end development, ensuring seamless integration and performance.
🔸Front-end Frameworks: Experienced in building dynamic and responsive user interfaces using React, Angular, and Vue, along with HTML, CSS, LESS, SASS, Webpack, Next.js, Nuxt.js, and Gatsby. My work involves creating reusable components, managing state efficiently, and ensuring a smooth user experience across various devices and platforms.
Why Choose Me:
🔸Proven Track Record: A history of delivering high-quality projects on time and within budget.
🔸Collaborative Approach: I thrive in team environments, effectively communicating and collaborating with cross-functional teams to achieve project goals.
🔸Continuous Learning: Committed to staying updated with the latest industry trends and technologies to provide innovative solutions.
I am enthusiastic about the opportunity to help you achieve your goals with my technical expertise and dedication. I am confident that my skills and experience will be key to the success of your project.
Reach out to secure a reliable development partner
Angular
JavaScript
C#
.NET Framework
ASP.NET
ASP.NET Core
FastAPI
Python
Node.js
React
AngularJS
Vue.js
Microsoft SQL Server
Amazon Web Services
Microsoft Azure
Erbol A.
Krakow, Poland
$120/hr
5.0
62 jobs
✯ Result-Oriented, ✯ Reliable and ✯ Reactive Web Developer.
More than 12 successful years on the market!
What my ❤ clients say about my work:
✓ A+++. Erbol is an extremely talented and responsible developer. For sure will hire him again with the new projects
✓ "Modern Javascript" is the phrase that comes to mind when I think about Erbol. I’ve had the pleasure of knowing Erbol for our Highlanders project as his supervisor at Incentient, during which he heavily lead the team in the technical aspects of the Highlanders project from start to finish. Above all, I was impressed with Erbol ability to guide and assist others in development. And, of course, his creative ability to resolve problems in the development cycle in a timely manner. Erbol would be a true asset for any positions requiring Javascript and this comes with my heartfelt recommendation.
✓ Erbol delivered everything we asked of him, he adhered to deadlines and he is a top-notch Angular developer. His communication skills are excellent and he really helped us when it came to solving a couple of problems. If we'll need an Angular developer we'll definitely contact him again.
✓ It was a big pleasure to get Erbol's consultation! I've got all the answers to my questions about Ionic and NativeScript. Thank you!
✓ Erick was a very valuable addition to our team while we developed a mobile app that required his very specific expertise and skill set. We could not have done it without him!
Erick is talented, knowledgeable and reliable. Erick was so dedicated to our project that he postponed his vacation to accommodate our deadlines. He conducts himself with the utmost professionalism and takes pride in his work.
I would highly recommend Erick as a software engineer.
✓ He was an excellent CSS designer and I enjoyed working with him. His communication and responsiveness were top-notch and his skills were reasonably strong. My expectations were exceeded and I will likely have additional jobs for him in the future. Thank you.
✓ Erick did a really great job. I hired him two times and I will do it again.
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My ❤ skills:
» JavaScript: Angular, Vue, Vuex, Vuetify, React, ReactNative, Redux, NativeScript, Ionic, Polymer, Rocket.Chat, RxJS, Canvas API, D3.js, Chart.js, Three.js, WebGL, Aggrid, Bootstrap, TypeScript, ES7, Web Workers, Service Workers, PWA, WebUSB, WebAssembly
» NodeJS: Express, Koa, Sails.js, Quasar Framework, Nuxt.js, Meteor, Socket.io, GraphQL, Apollo, Electron, PM2, Gulp, Grunt, Webpack, Babel, Sass
» Java: Spring, Spring MVC, Spring Boot, Spring Batch, Apache Camel, Maven, Gradle
» PHP: Laravel, Symfony, Yii, WordPress, Woocommerce, SmartJobBoard, ProcessWire
» Databases: MariaDB, PostgreSQL, Oracle, SQLite, Amazon Aurora, H2, MongoDB, CouchDB, Elastic Search, Redis, MemcacheDB, LevelDB, NeDB
» Other: Flutter, GraphQL, ElasticSearch, Algolia, Docker, Kubernetes, Neo4j, Apache Server, Nginx, Wowza, AWS, Azure, Google Cloud, FIrebase, Firestore, Datastore, Heroku, OpenShift, Gitlab, CD/CI, Jira, Agile Scrum, Scaled Agile, Tensorflow
Angular
JavaScript
MongoDB
AngularJS
NativeScript
Firebase
Node.js
Vue.js
Next.js
Symfony
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