Senior Backend Engineer

6 days ago


Warszawa, Czech Republic Link Group Full time

7+ years of experience in backend development. Strong skills in C#/.NET Core, SQL Server, MongoDB. Knowledge of Redis, Kafka, CI/CD tools, observability platforms (e.g., Datadog). Experience with AWS or another cloud platform. Good communication skills and ability to work in dynamic teams. Bonus: basic knowledge of Angular or React. We are looking for a skilled Backend Engineer with strong experience in C#/.NET Core and cloud technologies (preferably AWS). In this role, you will design and develop scalable APIs, work with relational and NoSQL databases, and contribute to reliable, high-performance backend services. ,[Building and maintaining APIs and backend services in .NET Core., Working with SQL Server and MongoDB for data modeling and optimization., Ensuring performance and stability through monitoring and automation., Supporting cross-functional teams and collaborating with frontend developers., Managing CI/CD pipelines and deployments (GitHub Actions, Jenkins).] Requirements: C#, .NET CORE, SQL Server, MongoDB, Redis, Kafka, CI/CD, Datadog, AWS, Communication skills, Angular, React



  • Warszawa, Czech Republic Link Group Full time

    6+ years of experience in backend software development. Strong expertise in Java and Scala. Proven track record in designing and building systems with large data volumes and high scalability. Solid skills in SQL development and debugging relational databases. Hands-on experience with cloud platforms (preferably AWS) and containerized microservice...


  • Warszawa, Czech Republic Fresha Full time

    Experience building and maintaining globally distributed systems. Knowledge of event-driven architectures (Kafka). ~2+ years of experience in product engineering, developer tools, or infrastructure at scale. A pragmatic generalist who thrives on learning new frameworks and tackling complex challenges. Familiarity with languages such as Elixir, Ruby, or...


  • Remote, Warszawa, Czech Republic Antal Full time

    At least a decade of professional experience in back-end development including 3+ years with Kotlin and in a technical leadership role as well Strong proficiency in Kotlin and solid understanding of modern backend architecture (e.g., microservices, REST, event-driven design) Experience with Spring framework (with Kotlin) Deep knowledge of modern...


  • Remote, Wrocław, Kraków, Białystok, Łódź, Warszawa, Gdynia, Czech Republic Spyrosoft Full time

    Strong professional experience with Kotlin and Java Expertise with Spring Boot framework Solid understanding of microservices architectures Hands-on experience with Kubernetes and containerization technologies Proficiency in Git, CI/CD, and modern DevOps practices Familiarity with database design and management Passion for renewable energy and...


  • Remote, Wrocław, Warszawa, Kraków, Czech Republic Shelf Full time

    Over 5 years of professional software engineering experience, including more than 3 year specializing in Node.js Deep understanding of distributed systems, concurrency patterns, and event-driven architectures Hands-on experience with AWS or Azure cloud primitives - you've personally provisioned resources, configured services, and built scalable systems using...


  • Warszawa, Czech Republic Devire Full time

    Background as a Java Senior Developer who transitioned into Data Engineering. Solid understanding of data engineering principles and Big Data processing. Hands-on experience with Scala and Apache Spark. Experience with software development. Familiarity with CI/CD pipelines, code quality monitoring, and cloud environments (preferably Azure). ...


  • Warszawa, Czech Republic AltexSoft Full time

    5+ years of Java development experience, with expertise in Spring Boot, JPA (JPA2, Hibernate), JUnit, JSON, and API development/integration. Strong communication skills, with the ability to convey complex concepts clearly using diagrams and models. - Excellent team collaboration skills, with the ability to engage effectively with internal and external...


  • Warszawa, Czech Republic AltexSoft Full time

    5+ years of Java development experience, with expertise in Spring Boot, JPA (JPA2, Hibernate), JUnit, JSON, and API development/integration. Strong communication skills, with the ability to convey complex concepts clearly using diagrams and models. Excellent team collaboration skills, with the ability to engage effectively with internal and external...


  • Remote, Warszawa, Czech Republic Acaisoft Poland Sp. z o.o. Full time

    Proven ability to design and build scalable APIs and microservices in production using C# / .NET, backed by 6+ years of experience. Strong SQL / PostgreSQL skills for advanced querying, optimization, aggregation, and processing of large analytical datasets with a focus on performance. Hands-on experience with caching (e.g., Redis), query profiling, building...


  • Warszawa, Czech Republic Link Group Full time

    5+ years of professional experience in front-end engineering, with excellent command of JavaScript and TypeScript. Strong proficiency in React and Angular, with practical experience in building enterprise-grade applications. Hands-on experience with Node.js for backend services and API integrations. Solid understanding of REST APIs, asynchronous programming...