Senior .Net Developer

🏢 Summary: Senior .NET Developer role on a remote or flexible-hybrid contract, building cloud-native, data-intensive platforms for intelligent heating and hot-water management. The work focuses on event-driven services, scalable analytics, distributed event processing, cloud infrastructure, and user-facing applications for sustainable energy solutions. 🗂️ Requirements: 5+ years of commercial C#/.NET experience, Kubernetes experience, Basic Azure knowledge, Python experience, PostgreSQL experience, Event-driven architecture experience, Asynchronous messaging systems experience, English proficiency at B2 level or higher, Ability to work independently, Ability to work in a cross-functional engineering team 📃 Skills: C#, NET, Kubernetes, Azure, Python, PostgreSQL, Kafka, Iceberg, GreptimeDB, React, TypeScript, SpiceDB, ReBAC, ETL 🏢 Description: Salary: 1250 - 1500 PLN/MD + VAT Remote: 100% remote or flexible hybrid from Gdańsk / Kraków / Warszawa Why choose this offer? You will have the opportunity to develop and improve a software tool which helps provide customers all over the world with tailor-made heating and cooling solutions Your work will help create more sustainable, cost-efficient and environment friendly heating and cooling solutions The Jit community will bring you a nice time during regular integration meetings Project We are looking for experienced Senior .Net Developer who will be part of a team developing modern software solutions for the energy and smart building industry, focused on intelligent heating and hot water management systems. You will join a team building modern data-intensive and cloud-native software platforms focused on scalable analytics, distributed event processing, and real-time operational insights. You’ll work closely with backend, frontend, and platform engineers to design and develop event-driven services, cloud infrastructure, and user-facing applications. Expected competences and knowledge Strong experience with C# / .NET – min. 5 years of commercial experience Hands-on experience with Kubernetes and basic Azure cloud knowledge Practical experience with Python Strong practical experience with PostgreSQL Experience with event-driven architecture and asynchronous messaging systems English proficiency at a minimum B2 level Ability to work independently and as part of a cross-functional engineering team Nice to have : Experience with migration and platform transformation projects React / TypeScript skills Python skills focused on data engineering, analytics, ETL, and data processing Hands-on experience with Kafka Experience with modern data platform ecosystems Experience designing and developing cloud-native architectures Technologies you'll work with C# / .NET Python Apache Kafka Apache Iceberg PostgreSQL GreptimeDB / Time-series databases React, TypeScript Kubernetes Azure Cloud SpiceDB / ReBAC Event-driven microservices architecture Client – why choose this particular client from the Jit portfolio? Our Client engineers technologies that enable the world of tomorrow to do more with less. They meet the growing need for infrastructure, food supply, energy efficiency and climate-friendly solutions . Their products and services are used in areas such as refrigeration, air conditioning, heating, motor control and mobile machinery. They are also active in the field of renewable energy as well as district heating infrastructure for cities and urban communities. Their innovative engineering dates back to 1933 and today our Client is a world-leader , employing more than 27,000 employees and serving customers in more than 100 countries . They are still privately held by the founding family. 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.

🏢 Summary: Senior Python Developer role on a modern, cloud-native platform for intelligent heating and hot-water management in the energy and smart-building sector. The offer includes 100% remote work or flexible hybrid work from Gdańsk, Kraków, or Warszawa, with a rate of 1240–1500 PLN/MD + VAT. 🗂️ Requirements: Python — 5+ years of commercial experience, Kubernetes — hands-on experience, .NET/C# — practical experience, PostgreSQL — strong practical experience, Event-driven architecture and asynchronous messaging systems, English — minimum B2, Azure — basic cloud knowledge, Independent and cross-functional team work 📃 Skills: Python, Kubernetes, C#, PostgreSQL, Azure 🏢 Description: Salary: 1240 - 1500 PLN/MD + VAT Remote: 100% remote or flexible hybrid from Gdańsk / Kraków / Warszawa Why choose this offer? You will have the opportunity to develop and improve a software tool which helps provide customers all over the world with tailor-made heating and cooling solutions Your work will help create more sustainable, cost-efficient and environment friendly heating and cooling solutions The Jit community will bring you a nice time during regular integration meetings Project We are looking for experienced Senior Python Developer who will be part of a team developing modern software solutions for the energy and smart building industry, focused on intelligent heating and hot water management systems. You will join a team building modern data-intensive and cloud-native software platforms focused on scalable analytics, distributed event processing, and real-time operational insights. You’ll work closely with backend, frontend, and platform engineers to design and develop event-driven services, cloud infrastructure, and user-facing applications. Expected competences and knowledge Strong experience with Python – min. 5 years of commercial experience Hands-on experience with Kubernetes Practical experience with .Net/C# Strong practical experience with PostgreSQL Experience with event-driven architecture and asynchronous messaging systems English proficiency at a minimum B2 level Basic Azure cloud knowledge Ability to work independently and as part of a cross-functional engineering team Nice to have : Experience with migration and platform transformation projects React / TypeScript skills Hands-on experience with Kafka Experience with modern data platform ecosystems Technologies you'll work with Python C# / .NET Apache Kafka Apache Iceberg PostgreSQL GreptimeDB / Time-series databases React, TypeScript Kubernetes Azure Cloud SpiceDB / ReBAC Event-driven microservices architecture Client – why choose this particular client from the Jit portfolio? Our Client engineers technologies that enable the world of tomorrow to do more with less. They meet the growing need for infrastructure, food supply, energy efficiency and climate-friendly solutions . Their products and services are used in areas such as refrigeration, air conditioning, heating, motor control and mobile machinery. They are also active in the field of renewable energy as well as district heating infrastructure for cities and urban communities. Their innovative engineering dates back to 1933 and today our Client is a world-leader , employing more than 27,000 employees and serving customers in more than 100 countries . They are still privately held by the founding family. 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.

🏢 Summary: Remote B2B opportunity to develop a scalable, enterprise-grade network monitoring and management platform using modern .NET technologies. The role focuses on backend development, REST APIs, performance optimization, and technical design within an international Agile team. 🗂️ Requirements: Commercial C# and .NET experience, ASP.NET Core experience, REST API design and implementation, Object-oriented programming and software design principles, Relational databases and SQL, Git proficiency, Agile environment experience, English proficiency at B2+ level, Problem-solving and analytical skills, Communication and cross-functional collaboration skills 📃 Skills: C#, .NET, ASP.NET, Core, REST, Git, SQL, OOP, Agile, Scrum 🏢 Description: Salary: 1100–1500 PLN/MD + VAT (B2B) Work model: Remote Why choose this offer? Work on a modern , enterprise-grade network monitoring platform. Collaborate with experienced engineers in an international environment. You can expect a flexible work organization . The Jit community will bring you a nice time during regular integration meetings. Project Join the development of a next-generation network monitoring and management platform designed to provide complete network visibility, real-time performance analysis, automated device configuration, advanced reporting, anomaly detection, and centralized management of distributed IT environments. You will be part of a team building a scalable , secure solution integrated with industry-standard networking protocols using modern .NET technologies . Responsibilities Design, develop, and maintain backend applications using C# and .NET Build and enhance REST APIs and backend services Participate in the architecture and development of a scalable network monitoring platform Collaborate with cross-functional teams to deliver high-quality software Write clean, maintainable, and well-tested code Troubleshoot, debug, and optimize application performance Take part in code reviews and share best development practices Contribute to technical design and continuous improvement of the platform Requirements Strong commercial experience with C# and the .NET ecosystem Hands-on experience with ASP.NET Core Experience designing and implementing REST APIs Solid understanding of object-oriented programming (OOP) and software design principles Experience working with relational databases and SQL Familiarity with Git and modern software development practices Strong problem-solving and analytical skills Good communication skills and ability to work in an Agile environment Very good command of English (B2+) Nice to have AWS Technologies you'll work with C# .NET ASP.NET Core REST APIs Git SQL Agile / Scrum Client – why choose this particular client from the Jit portfolio? Join an international technology company developing a modern network monitoring and management platform used to ensure the performance, availability, and security of complex IT infrastructures. You'll contribute to a product that provides real-time network visibility , advanced analytics, automated device management, and intelligent alerting, helping organizations efficiently manage distributed environments. This is an opportunity to work on a scalable, product-driven solution where engineering quality, innovation, and long-term development are key priorities. 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.

🏢 Summary: Oferta dla Senior Java Developera w projekcie modernizacji systemów IT dla sektora energetycznego. Rola obejmuje rozwój aplikacji Java, mikroserwisów i REST API w środowisku Spring Boot oraz DevSecOps, z wynagrodzeniem 1000–1300 PLN/MD na B2B i sporadycznymi wizytami we Wrocławiu. 🗂️ Requirements: Minimum 8 lat doświadczenia w programowaniu Java, Znajomość wzorców projektowych i integracyjnych, Znajomość architektury mikroserwisowej, Znajomość Spring Boot, JPA i Hibernate, Doświadczenie w projektowaniu i implementacji REST API, Znajomość relacyjnych baz danych SQL, Znajomość praktyk DevSecOps, Doświadczenie z konteneryzacją, Znajomość zasad projektowania interfejsów użytkownika i użyteczności aplikacji webowych, Doświadczenie w branży energetycznej 📃 Skills: Java, SpringBoot, JPA, Hibernate, REST, SQL, Oracle, DevSecOps, Docker, Kubernetes, Nomad, Kafka, MinIO, Jenkins, GitLab 🏢 Description: Wynagrodzenie: 1000 - 1300 PLN/MD (B2B) Praca zdalna: sporadyczne wizyty w biurze we Wrocławiu (raz w miesiącu) Dlaczego warto wybrać tę ofertę? Dołączysz do projektu realizowanego dla klienta z sektora energetycznego, który rozwija i modernizuje kluczowe systemy informatyczne wspierające krajową infrastrukturę energetyczną Będziesz pracować z wykorzystaniem nowoczesnych technologii i architektury mikroserwisowej w środowisku opartym o Java, Spring Boot oraz rozwiązania DevSecOps To okazja do wykorzystania i dalszego rozwijania kompetencji w obszarze integracji systemów, konteneryzacji oraz projektowania rozwiązań klasy enterprise Projekt Jako Senior Java Developer dołączysz do projektu realizowanego dla organizacji wspierającej rozwój i utrzymanie systemów IT wykorzystywanych w sektorze energetycznym. Projekt koncentruje się na budowie oraz rozwoju nowoczesnych rozwiązań informatycznych z wykorzystaniem Java, Spring Boot i architektury mikroserwisowej. Zakres obowiązków Rozwój i utrzymanie aplikacji w technologii Java Projektowanie i implementacja architektury mikroserwisowej Tworzenie oraz rozwój interfejsów REST API Oczekiwane kompetencje i wiedza Minimum 8 lat doświadczenia w programowaniu w języku Java Praktyczna znajomość wzorców projektowych , wzorców integracyjnych oraz architektury mikroserwisowej Znajomość frameworków Spring Boot (Core, Data, Security), JPA oraz Hibernate Doświadczenie w projektowaniu i implementacji REST API Znajomość relacyjnych baz danych SQL, preferencyjnie Oracle Znajomość praktyk DevSecOps Doświadczenie w pracy z technologiami konteneryzacji, takimi jak Docker, Kubernetes (K8s) lub Nomad Znajomość dobrych praktyk projektowania interfejsów użytkownika oraz zagadnień związanych z użytecznością aplikacji webowych Doświadczenie w branży energetycznej Mile widziane Znajomość narzędzi i technologii: Apache Kafka, MinIO, Jenkins, GitLab Technologie z jakimi będziesz pracować Java Spring Boot JPA Hibernate REST API SQL (Oracle) Docker Kubernetes (K8s) Nomad Apache Kafka MinIO Jenkins GitLab Klient – dlaczego warto wybrać akurat tego klienta z portfolio JIT? Nasz klient specjalizuje się w rozwijaniu innowacyjnych rozwiązań technologicznych w sektorze energetycznym i działa na terenie całej Polski od ponad 12 la t. Klient wspiera krajowego operatora systemu przesyłowego poprzez budowę i modernizację systemów informatycznych oraz prowadzenie prac badawczo-rozwojowych. Firma wdraża także zaawansowaną automatyzację procesów biznesowych, co pozwala na zwiększenie efektywności działania. Głównym założeniem naszego klienta jest zapewnienie efektywnej i niezawodnej pracy systemu elektroenergetycznego, wspierając jednocześnie rozwój odnawialnych źródeł energii. O Jit Team The Human factor of IT - to nie tylko slogan, to filozofia. Fundamentem Jit Team są ludzie, dlatego to właśnie Was traktujemy priorytetowo. Zatrudniamy ponad 770 doświadczonych ekspertów , którym oferujemy rozwojowe projekty, szeroki zakres benefitów oraz autorski program rozwoju zawodowego. Wspólnie z klientami z całego świata tworzymy innowacyjne rozwiązania IT, dostarczane przez wysoko specjalizowane i efektywne zespoły. Za naszą maksymą stoją, także działania charytatywne i edukacyjne. Wspieramy szkoły, uczelnie i instytucje edukacyjne – prowadząc zajęcia, projekty edukacyjne, sponsorując wydarzenia czy przekazując sprzęt do nauki. Oferujemy staże umożliwiające rozpoczęcie kariery w IT. Wspieramy ratowników wodnych oraz szpitale, dostarczając potrzebne wyposażenie. Wspieramy też liczne organizacje charytatywne wspierające ubogich, dzieci i osoby starsze. Jesteśmy Polską firmą i dzielimy się tym, co osiągnęliśmy przez ponad 15 lat działalności. Wspierając rodzime inicjatywy, dbamy o obieg dobrej energii.