Senior .NET Developer

Salary: 1040–1200PLN/h on B2B Work model: full remote Warsaw/ Cracow Why choose this offer? Impact on the development of the largest e-commerce system in PolandYou can expect a flexible work organizationLong-term cooperation within a stable ecosystemThe Jit community will bring you a nice time during regular integration meetings Project Development and maintenance of backend applications based on .NET, including the design and development of microservices and distributed systems. The project involves building and integrating APIs supporting business applications and services, optimizing high-availability solutions, and contributing to architectural decisions and technical design. Close collaboration with product teams, architects, and technology teams, with a strong focus on code quality, performance, and continuous improvement. Responsibilities Designing, developing, and maintaining backend applications using .NET / C#Developing and maintaining microservices and distributed systemsDesigning and implementing REST APIs for business applications and servicesParticipating in software architecture and technical design decisionsCollaborating with product teams, architects, and other technology teamsPerforming code reviews and ensuring high code qualityAnalyzing and optimizing application performanceMaintaining and optimizing high-availability systemsSupporting technical improvements and continuous development of existing solutionsSharing knowledge and providing technical mentoring to other team members Expected competences and knowledge Minimum 4 years of professional experience with .NET / C#Strong experience in backend development and API designPractical experience with microservices and distributed systemsGood knowledge of SQL and relational databasesPractical experience with Microsoft AzureVery good knowledge of GitUnderstanding of software architecture and design patternsExperience with performance analysis and optimizationExperience with code reviews and preferably mentoringAbility to collaborate effectively with product teams, architects, and other technology teamsEnglish at B2+ level Nice to have KubernetesDockerEvent SourcingPowerShell/BashAzure DevOps Technologies you'll work with C# / .NET / ASP.NET CoreREST APIsMicroservices & distributed systemsMicrosoft AzureSQL / SQL ServerGitDockerKubernetesAzure DevOpsEvent SourcingPowerShell / Bash Client – why choose this particular client from the Jit portfolio? Our Client dominates the Polish e-commerce arena as the market leader since 1999. With a user base of over 20 million and growing, this well-established platform is at the forefront of e-commerce, constantly striving for growth through market expansion and investment. As a major player in technology, our Client boasts a talented IT team of over 1,000 employees who focus on developing their own cutting-edge technologies. Jit Team has had a successful partnership with our Client since spring 2021, with multiple software development teams dedicated to our Client's platforms. These teams operate autonomously, designing platform components through micro-services. Working with our Client offers a chance to contribute to a solution used by millions on a daily basis and to tackle the challenge of delivering software at a massive scale, where even a single second of delay can have a significant impact. This project provides a unique opportunity to work with state-of-the-art technologies and tools, making it a rare and valuable experience. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts, to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.