Senior .NET Developer

🏢 Summary: Backend Developer role focused on designing and building scalable, cloud-based applications using Java and Spring Boot in a microservices architecture. The position involves developing and deploying distributed, event-driven services on Azure using modern containerization and API technologies. The offer emphasizes building reliable, high-quality backend systems with up-to-date cloud-native practices. 🗂️ Requirements: Strong Java development experience, Experience with Spring Boot, Experience with microservices architecture, Experience with cloud-native applications, Familiarity with Azure, Knowledge of Kafka or similar messaging systems, Understanding of GraphQL or REST APIs, Experience with Docker, Experience with Kubernetes 📃 Skills: Java, Spring, SpringBoot, Microservices, Azure, Kafka, GraphQL, REST, Docker, Kubernetes 🏢 Description: We are seeking a talented Backend Developer to join our team, contributing to the design and development of modern, cloud-based applications. The role focuses on building scalable and maintainable services using up-to-date technologies and best practices. Key Responsibilities: Develop and maintain backend services using Java and Spring Boot . Build and support microservices solutions for distributed systems. Work with cloud platforms such as Azure , including event-driven architectures. Implement and consume APIs using GraphQL or REST. Package and deploy applications using Docker and Kubernetes . Collaborate with team members to deliver reliable, high-quality software. Required Skills & Experience: Strong background in Java development with Spring Boot . Experience with microservices and cloud-native applications. Familiarity with Azure , Kafka , or similar messaging/event systems. Understanding of API design ( GraphQL /REST). Practical experience with containerization ( Docker , Kubernetes ). Nice to Have: Knowledge of CI/CD practices and automated deployments. Experience with monitoring, logging, or observability in distributed systems.

🏢 Summary: Part-time Backend Developer role for early-career candidates or students, focused on building and maintaining web applications using Python, Django, and microservices architecture. The position involves developing, testing, debugging, and documenting backend solutions, as well as participating in code reviews. It offers hands-on experience in modern backend development within a collaborative team environment. 🗂️ Requirements: Experience with Python, Experience with Django framework, Knowledge of RESTful APIs, Knowledge of microservices architecture, Experience with SQL, Experience with PostgreSQL, Knowledge of data modeling, Knowledge of data warehouse concepts, Knowledge of software testing methodologies, Ability to create unit tests, Understanding of clean code principles, Familiarity with design patterns, Ability to read technical documentation in English, Adherence to software development best practices 📃 Skills: Python, Django, REST, Microservices, SQL, PostgreSQL, APIs, UnitTesting, IntegrationTesting, SystemTesting, DataModeling, DataWarehouse, GitHub, GitLab 🏢 Description: Who we are looking for: We are looking for a Backend Developer, available for at least half-time, to join our team. If you are at the beginning of your professional career or currently studying, this job is for you. Responsibilities: implementing and developing software based on Python, Django, and microservices technologies, designing and developing web applications, running, testing, and debugging implemented software, creating unit tests, documenting the source code you create, conducting code reviews of source code written by other team members. Requirements: experience with Python and the Django framework, knowledge of RESTful APIs, microservices architecture, and best practices in API design, experience with SQL, especially PostgreSQL, data modeling, and data warehouse concepts, English proficiency sufficient to read technical documentation, creative, solution-oriented problem-solving skills, knowledge of software testing methodologies, including unit, integration, and system testing, openness toward others and the ability to work in a team, willingness to learn new technologies, adherence to software development best practices, knowledge and application of clean code principles, and familiarity with design patterns. Nice to have: knowledge of industry trends, emerging technologies, and best practices in software development, personal projects in your portfolio, familiarity with code repository management platforms such as GitHub or GitLab, documented ability to lead and comprehensively manage complex projects, from initial planning and scope definition through successful implementation and delivery, ensuring timely execution and alignment with business goals. We offer: sports card co-funding, company events, opportunities to learn and gain experience, prospects of working on interesting and diverse projects, participation in industry events, the possibility to work 100% remotely.

🏢 Summary: The offer is for a Back End Developer responsible for building and maintaining APIs, backend services, and scalable system architecture within the .NET ecosystem. The role focuses on designing microservices-based solutions, integrating databases and third-party services, and ensuring high performance, security, and reliability. It includes remote work options under a B2B contract. 🗂️ Requirements: Strong knowledge of backend technologies, especially .NET ecosystem, Experience with .NET 8+ and ASP.NET Core, Experience with relational databases (PostgreSQL or MySQL), Experience with NoSQL databases (MongoDB), Experience building RESTful APIs using Swagger / OpenAPI, Experience with Microservices Architecture, Experience with RabbitMQ for message queuing, Experience with Docker and Kubernetes, Experience with Auth0 and JWT-based authentication, Experience with cloud services (AWS, Azure or GCP) 📃 Skills: .NET, ASP.NET, C#, PostgreSQL, MySQL, MongoDB, REST, Swagger, OpenAPI, Microservices, RabbitMQ, Docker, Kubernetes, Auth0, JWT, AWS, Azure, GCP 🏢 Description: Description The Back End Developer will develop and maintain APIs, services, and server-side logic and databases. You'll contribute to system architecture and help scale our platforms. You will ensure high performance and responsiveness of applications, working alongside frontend developers and other team members. Responsibilities Design, build and implement backend services and APIs Design data models and manage database integration Integrate with databases and third-party APIs Implement security and data protection measures Optimize performance and security of systems Requirements Strong knowledge of backend technologies / languages, particularly .NET ecosystem Experience in .NET 8+ (or latest version), including ASP.NET Core for building web APIs and services. Experience with relational databases, such as PostgreSQL, MySQL for structured data, complex queries, and ACID compliant operations Experience with NoSQL databases, such as MongoDB, for handling unstructured or semi-structured data, schema flexibility, and high-throughput scenarios Experience with RESTful APIs for development of robust, secure RESTful services with best practice for APU design, versioning and documentation, using Swagger / Open API Experience in Microservices Architecture, for design, implementation, and management of distributed systems using microservices principles, ensuring loose coupling, scalability, and resilience Experience in Message Queuing:, using RabbitMQ for asynchronous communication, event-driven architecture, and reliable message brokering between services Experience in Containerization and Orchestration, using Kubernetes (K8s) for deploying, scaling, and managing containerized applications in production environments and Docker for containerization Experience in Authentication, using Auth0 for identity management, JWT-based authentication Experience in Cloud Services, such as AQS, Azure, GC Nice to have Experience in Rabbit MQ Middleware Prior experience in the EdTech domain (e-learning platforms, digital classrooms, LMS) Knowledge of learning science, instructional design, or accessibility standards (e.g., WCAG) Familiarity with tools like Moodle, Canvas, Zoom SDK, or Google Classroom integration Working conditions Partly / fully remote B2B contract

🏢 Summary: Backend Engineer role focused on designing, building, and maintaining scalable backend services in a cloud-native AWS environment. The position involves developing production-grade APIs and services using TypeScript and .NET, with strong emphasis on CI/CD, Infrastructure as Code, and cloud-native best practices. The role supports secure, scalable backend systems with close collaboration across platform and operations teams. 🗂️ Requirements: Strong experience building and maintaining scalable APIs and backend services, Hands-on experience with CI/CD pipelines using GitHub Actions or GitHub Workflows, Strong development experience with TypeScript, Strong development experience with .NET (C#), Experience deploying and operating workloads in AWS Cloud, Experience using Terraform for Infrastructure as Code, Experience designing and consuming RESTful APIs or event-driven services, Understanding of cloud-native patterns, Experience with relational databases and SQL, Fluent English 📃 Skills: TypeScript, .NET, C#, AWS, Terraform, SQL, REST, CI/CD, GitHub, GitHubActions, APIs, IAM, Lambda, ECS, Fargate 🏢 Description: We are looking for a Backend Engineer to design, build, and maintain backend services in a modern cloud-native AWS environment. Core skills & experience: Strong experience as a Backend Developer, building and maintaining scalable APIs and backend services Hands-on experience with CI/CD pipelines, preferably using GitHub Actions / GitHub Workflows Strong development experience with TypeScript and .NET (C#), including building and operating production services Familiarity with AWS Cloud, including deploying and operating backend workloads in AWS Experience using Terraform for Infrastructure as Code (IaC) Related technologies / domain knowledge: Experience designing and consuming RESTful APIs and/or event-driven backend services Understanding of cloud-native patterns (stateless services, scaling, resiliency, observability) Experience working with relational databases (SQL) and backend integrations Nice-to-have / preferred experience: Experience with containerized workloads (e.g. ECS Fargate or similar) Experience with Lambda functions Familiarity with IAM and AWS security best practices Exposure to data platforms or ETL-heavy environments Experience working in environments with high operational and security requirements General expectations: Able to take ownership of backend services from development through production Comfortable working closely with platform, data, and operations engineers Focused on clean code, automation, and reliable delivery through CI/CD Used to working with SCRUM principles, preferably in JIRA Fluent English Other Details: The role is designed for a cloud-native environment, supporting development across various backend services focused on scalability and security.

🏢 Summary: The role involves developing and maintaining scalable backend services for business-critical applications using Java within an agile environment. The position focuses on building RESTful APIs, implementing persistence layers, and ensuring system quality and stability. The developer collaborates on code reviews, debugging, and continuous improvement of backend solutions. 🗂️ Requirements: Strong experience with Java 17+, Hands-on experience with Spring, Hands-on experience with Spring Boot, Knowledge of Hibernate and ORM concepts, Experience with PostgreSQL, Experience with Git version control platforms, Strong debugging skills, Experience in agile development environments 📃 Skills: Java, Spring, SpringBoot, Hibernate, PostgreSQL, REST, Git, ORM 🏢 Description: Backend Developer (Java) We are looking for a Backend Developer to join a development team responsible for building and maintaining backend services for business-critical applications. The role focuses on developing scalable, maintainable solutions and contributing to the overall quality and stability of the system within an agile setup. Responsibilities: Develop and maintain backend services using Java 17+ Design and implement RESTful APIs with Spring and Spring Boot Work with relational databases, including schema design and query optimization in PostgreSQL Implement persistence layers using Hibernate Debug, troubleshoot, and resolve backend issues Collaborate with the team using a GitHub-like platform, including code reviews and version control Participate in agile ceremonies and contribute to continuous improvement Requirements: Strong experience with Java 17+ Hands-on experience with Spring and Spring Boot Knowledge of Hibernate and ORM concepts Experience working with PostgreSQL Familiarity with GitHub-like platforms and team workflows Strong debugging and problem-solving skills Experience working in agile development environments

🏢 Summary: Full-Stack / Backend Developer role focused on building and maintaining scalable applications and REST APIs that support client products. The position involves developing new integrations, enhancing existing backend and frontend systems, and improving platform performance and reliability. You will contribute to architecture improvements and work within a cloud-based environment. 🗂️ Requirements: Minimum 3 years commercial experience, Experience with Java, Experience with Spring Boot, Experience with AWS, Experience with MongoDB, Experience with PostgreSQL, Experience with React.js, Experience designing REST APIs, Knowledge of backend architecture, Experience with cloud environments, Understanding of clean code principles, Experience working in Agile environment 📃 Skills: Java, SpringBoot, AWS, MongoDB, PostgreSQL, React, REST, Agile, Cloud, Architecture 🏢 Description: We are looking for an experienced Full-Stack / Backend Developer to join our team and help build scalable applications and APIs supporting our clients’ products. You will work on both backend and frontend solutions, contributing to product development, system improvements, and ongoing platform stability. Your Responsibilities Develop new APIs to support client integrations and business features. Maintain and enhance existing backend and frontend applications. Fix bugs and improve application performance and reliability. Upgrade and support operational aspects of the platform. Identify opportunities to improve product quality, architecture, and development processes. Collaborate with developers, product teams, and stakeholders to deliver high-quality solutions. Participate in code reviews and contribute to best engineering practices. Required Skills Minimum 3 years of commercial experience with: Java Spring Boot AWS MongoDB PostgreSQL React.js Experience designing and developing REST APIs. Knowledge of backend architecture and modern web applications. Experience working with cloud-based environments (AWS). Understanding of software development best practices and clean code principles. Ability to work in an Agile development environment.

🏢 Summary: Contract opportunity for a Software Developer to design, develop, and maintain scalable microservices architectures within a digital organization. The role focuses on backend development using Java/Kotlin and Spring Boot, low-code platforms, and DevSecOps practices to deliver secure, high-quality solutions. Hybrid work model in Stockholm with collaboration across cross-functional teams in a fast-paced environment. 🗂️ Requirements: Experience with Java/Kotlin, Experience with Spring Boot, Experience with microservice architecture, Experience with low-code platforms, Ability to work in high-paced project environment, Collaborative mindset for cross-functional work, Understanding of DevSecOps practices 📃 Skills: Java, Kotlin, Spring, SpringBoot, Microservices, DevSecOps, Low-code, Cloud 🏢 Description: Introduction & Summary: We are seeking a Software Developer with expertise in microservices to enhance our digital organization. The ideal candidate will design, develop, and maintain robust microservice infrastructures, providing tailored solutions to meet business goals. Collaboration with domain experts is essential to refine workflows, while a focus on DevSecOps practices will secure operational efficiency. Adaptability and problem-solving skills are critical in a fast-paced environment. Main Responsibilities: As a Backend Developer, you will: Design, develop, and maintain scalable microservices architecture. Collaborate with cross-functional teams to deliver tailored solutions and integrations. Maintain and improve DevSecOps procedures, ensuring strong governance and security policies. Work with domain experts to translate business requirements into technical solutions. Adapt quickly to shifting project priorities and timelines in a high-paced environment. Contribute to the growth and knowledge-sharing within your team. Key Requirements: Ability to work efficiently in a high-paced, evolving project environment. A collaborative mindset with a desire to work closely with colleagues across different functions. Experience working with low-code platforms to deliver functional, high-quality workflows and systems. Experience with Java/Kotlin and Spring Boot frameworks. A strong understanding of microservice architecture principles. An eagerness to learn and contribute beyond your core technical expertise. Nice to Have: Knowledge of contemporary programming practices. Familiarity with cloud services and deployment strategies. Other Details: This position is based in Stockholm, requiring 2-3 days on-site per week. The contract duration is from 14/9/2026 to 30/4/2027.

🏢 Summary: Backend Developer role focused on developing and maintaining .NET-based backend applications for e-commerce and logistics platforms, including REST API design and system optimization. The position involves working on live production systems, implementing new features, and improving technical quality. The role also includes using modern AI tools to support development processes. 🗂️ Requirements: Commercial experience in C#, .NET application development experience, Strong knowledge of MS SQL, Practical experience in designing REST API, Experience in maintaining backend systems, Ability to diagnose and optimize technical issues, Experience working with production systems 📃 Skills: C#, .NET, .NET Core, MS SQL, REST, API, SQL 🏢 Description: Szukamy doświadczonego Backend Developera, który dołączy do rozwoju naszych platform xSale oraz Futuriti WMS. Tworzymy rozwiązania dla średnich i dużych firm z obszaru e-commerce i logistyki, które automatyzują procesy, integrują systemy i porządkują operacje klientów. To rola dla osoby, która dobrze odnajduje się w backendzie, potrafi pracować odpowiedzialnie na działających systemach i chce mieć realny wpływ na rozwój produktów oraz jakość techniczną rozwiązań. Technologie, których używamy: - .NET / .NET Core - C# - MS SQL - REST API Twój zakres obowiązków: - rozwój i utrzymanie aplikacji backendowych w technologii .NET - projektowanie i wdrażanie nowych funkcjonalności - rozwijanie oraz utrzymywanie interfejsów REST - optymalizacja istniejących rozwiązań i diagnozowanie problemów - współpraca z zespołem przy realizacji projektów od analizy do wdrożenia - stopniowe przejmowanie odpowiedzialności za wybrane obszary systemu i ich jakość - praca z nowoczesnymi narzędziami AI oraz równoległe prowadzenie i nadzorowanie agentów wspierających pracę developerską Oczekujemy: - komercyjnego doświadczenia w tworzeniu aplikacji w C# / .NET - bardzo dobrej znajomości MS SQL - praktycznej znajomości projektowania i rozwijania REST API - samodzielności w rozwiązywaniu problemów technicznych - odpowiedzialności za jakość i efekt pracy - dobrej komunikacji w zespole i umiejętności sygnalizowania ryzyk - gotowości do nauki, porządkowania tematów i pracy w zmiennym środowisku technologicznym Dużym plusem będzie: - doświadczenie w systemach integracyjnych, ERP, e-commerce lub logistyce - doświadczenie w utrzymaniu i rozwoju systemów działających produkcyjnie - umiejętność brania ownershipu za większy obszar niż pojedynczy task - chęć rozwoju w kierunku większej odpowiedzialności technicznej i wspierania innych członków zespołu Co oferujemy: stabilne warunki zatrudnienia – umowę o pracę lub B2B, bogaty pakiet benefitów, możliwość rozwoju zawodowego szkolenia produktowe, dostęp do najnowszych technologii, udział w ciekawych i innowacyjnych projektach, komfortowe warunki pracy w biurowcu klasy A.

🏢 Summary: Backend Developer role focused on developing and maintaining .NET-based platforms supporting e-commerce and logistics systems. The position involves designing new features, building and maintaining REST APIs, optimizing existing solutions, and working on production systems with real impact on product quality. The role also includes using modern AI tools to support development processes. 🗂️ Requirements: Commercial experience in C# and .NET development, Very good knowledge of MS SQL, Practical experience in designing and developing REST APIs, Experience in developing and maintaining backend applications, Ability to diagnose and optimize backend systems, Experience working with production systems 📃 Skills: .NET, .NETCore, C#, MSSQL, SQL, REST, API, AI 🏢 Description: Szukamy doświadczonego Backend Developera, który dołączy do rozwoju naszych platform xSale oraz Futuriti WMS. Tworzymy rozwiązania dla średnich i dużych firm z obszaru e-commerce i logistyki, które automatyzują procesy, integrują systemy i porządkują operacje klientów. To rola dla osoby, która dobrze odnajduje się w backendzie, potrafi pracować odpowiedzialnie na działających systemach i chce mieć realny wpływ na rozwój produktów oraz jakość techniczną rozwiązań. Technologie, których używamy: - .NET / .NET Core - C# - MS SQL - REST API Twój zakres obowiązków: - rozwój i utrzymanie aplikacji backendowych w technologii .NET - projektowanie i wdrażanie nowych funkcjonalności - rozwijanie oraz utrzymywanie interfejsów REST - optymalizacja istniejących rozwiązań i diagnozowanie problemów - współpraca z zespołem przy realizacji projektów od analizy do wdrożenia - stopniowe przejmowanie odpowiedzialności za wybrane obszary systemu i ich jakość - praca z nowoczesnymi narzędziami AI oraz równoległe prowadzenie i nadzorowanie agentów wspierających pracę developerską Oczekujemy: - komercyjnego doświadczenia w tworzeniu aplikacji w C# / .NET - bardzo dobrej znajomości MS SQL - praktycznej znajomości projektowania i rozwijania REST API - samodzielności w rozwiązywaniu problemów technicznych - odpowiedzialności za jakość i efekt pracy - dobrej komunikacji w zespole i umiejętności sygnalizowania ryzyk - gotowości do nauki, porządkowania tematów i pracy w zmiennym środowisku technologicznym Dużym plusem będzie: - doświadczenie w systemach integracyjnych, ERP, e-commerce lub logistyce - doświadczenie w utrzymaniu i rozwoju systemów działających produkcyjnie - umiejętność brania ownershipu za większy obszar niż pojedynczy task - chęć rozwoju w kierunku większej odpowiedzialności technicznej i wspierania innych członków zespołu Co oferujemy: stabilne warunki zatrudnienia – umowę o pracę lub B2B, bogaty pakiet benefitów, możliwość rozwoju zawodowego szkolenia produktowe, dostęp do najnowszych technologii, udział w ciekawych i innowacyjnych projektach, komfortowe warunki pracy w biurowcu klasy A.

🏢 Summary: Offer for a .NET Backend Developer focused on building backend services in a microservices and cloud-native environment. The role includes developing REST APIs, API-to-API integrations, data access layers, and collaborating in Scrum teams using modern backend technologies. 🗂️ Requirements: Experience as .NET Backend Developer, Practical knowledge of .NET, Knowledge of Scrum, Practical knowledge of Git, Experience with API-to-API communication, Knowledge of asynchronous programming, Experience designing and implementing REST API, Practical knowledge of Entity Framework, Good knowledge of SQL, Experience with PostgreSQL, Experience with microservices architecture, Knowledge of Cloud Native solutions 📃 Skills: .NET, Scrum, Git, REST, EntityFramework, SQL, PostgreSQL, Microservices, CloudNative, Async, API, AWS, Kubernetes, KQL, SIEM, Elastic, Hangfire, gRPC, GraphQL 🏢 Description: O projekcie Poszukujemy .NET Backend Developera do realizacji projektów opartych o architekturę mikroserwisową i rozwiązania cloud-native. Rola obejmuje rozwój usług backendowych, integrację systemów poprzez API oraz współpracę z zespołem projektowym zgodnie z metodyką Scrum. Twój zakres obowiązków projektowanie i rozwój aplikacji backendowych w technologii .NET implementacja oraz rozwój mikroserwisów tworzenie i rozwój REST API integracja systemów z wykorzystaniem komunikacji API-to-API projektowanie i rozwój rozwiązań opartych o architekturę cloud-native współpraca z zespołem projektowym w metodyce Scrum rozwój oraz utrzymanie warstwy dostępu do danych udział w przeglądach kodu oraz stosowanie dobrych praktyk programistycznych Nasze wymagania doświadczenie jako .NET Backend Developer praktyczna znajomość .NET znajomość metodyki Scrum praktyczna znajomość Git doświadczenie w komunikacji API-to-API znajomość programowania asynchronicznego (Async) doświadczenie w projektowaniu i implementacji REST API praktyczna znajomość Entity Framework dobra znajomość SQL doświadczenie z PostgreSQL doświadczenie w pracy z architekturą mikroserwisową znajomość rozwiązań Cloud Native Mile widziane znajomość AWS doświadczenie z Kubernetes znajomość KQL doświadczenie z SIEM znajomość Elastic znajomość Hangfire doświadczenie z gRPC znajomość GraphQL