Expert Fullstack .NET & TS Developer

Wymagania: - 5+ years of experience as a .NET Developer with TypeScript - Excellent development skills in C# - Experience building Web APIs and backend services - Good understanding of multithreading and parallelism - Experience with Entity Framework and/or Dapper - Experience with unit testing and mocking - Good understanding of: Microservice architecture, Event-driven architecture, Git, the entire CI/CD workflow from development to release, GitHub, SQL and noSQL databases (preferably with PostgreSQL, MongoDB, Redis), .NET 6 or newer, AWS - Very good English communication skills (B2+/C1) Mile widziane: - Fullstack experience with React, NestJS, NextJS - Experience with Node.js - Knowledge of Domain-Driven Design (DDD) - Experience with event-driven systems - Fintech or product-company background - Bachelor's degree in computer science or related studies O firmie: - KOIA is not just a software development house. We are a crew creating amazing solutions that serve businesses. - A cool mix of people here makes KOIA packed with experience and talent. We are learning from each other and working not only on interesting but also on revolutionizing (even life-changing) sustainable projects every day. We love challenges. If you love them also - then we make a perfect match. - That's what has made our past and current projects successful and incredibly rewarding. - • Decent Salary: in KOIA, we value our talents. We understand that Pizza Days will never replace high respect and reward. So we prefer the last one. - 28-34 EURO/H + VAT (B2B contract, rate based on programming proficiency) - • Dynamic Work Environment: an invigorating workspace with a mix of Norwegian and Polish innovation focused on smart software solutions. - • Team Culture: Here, we respect maturity, conversations, and intelligent working (which means not overwork but taking care of ourselves along the way). We see the value in effective listening, so your thoughts and ideas matter to us. - • Continuous Learning: We support continued learning and offer learning opportunities as well as access to any tools you might need - • Sustainable Life Concept: It is not only about work. We care about body, mind, and spirit, organize events for meeting together, etc. - • Self-Development Days: We care about your growth. We offer mentorship opportunities. - • Excellent Office Space: Although we are remote-first, our office offers a comfortable and adjustable workspace with plants, bike parking, and a loaded kitchen. - • Fantastic Partners: You'll have the chance to work with innovators in the fintech and climate-tech scenes in the Scandinavian region. - By joining KOIA, you will join a successful team committed to creating meaningful solutions and promoting a healthy and fulfilling work environment. Zakres obowiązków: - Collaborate on both the back-end and front-end development of applications. - Assist clients in transforming their existing applications to a new tech stack. - Work in a remote-first environment with an expectation to join the team from our Gdańsk office 2 days per week. - Contribute to the success of cutting-edge technology projects. - Maintain a client-focused approach and engage in frequent client communication. - Pay attention to detail and ensure the quality of development work. Oferujemy: - Competitive Compensation: 25–30 EUR/h + paid days off (B2B) - Alternative higher-rate option available without paid leave - Remote-first culture with regular in-person collaboration. Presence in our Gdańsk office 2 days per week is expected. - You’ll have real influence on technical decisions, architecture, and product development. - Mentorship opportunities - Self-development days - Access to learning resources and tools - We value sustainable work, mature communication, and work-life balance over overtime culture. - Office Space in Gdańsk - Our office offers: adjustable desks, bike parking, fully stocked kitchen. - You’ll work with innovative companies from the fintech and climate-tech sectors across Scandinavia.