Wróć do listy

Opis oferty

Senior .NET Developer w Warszawa, Polska

PROGNETICS SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

  • ZdalniePraca z dowolnego miejsca
  • KontraktUmowa czasowa lub freelancing

120,00 – 145,00 zł

Warszawa, Polska

Your responsibilities

  • We are looking for .NET Developer with a minimum of 6+ years' experience.
  • We're looking for talented professionals like you to join our vibrant team.
  • In this role, you'll become a valued part of our community, bringing your unique expertise to the table. We believe in collaboration and encourage you to actively contribute your skills.
  • Your voice matters here - propose innovative technical solutions and take ownership of your projects.
  • As a member of our team, you won't just be a cog in the wheel. We're committed to supporting your growth journey.
  • Join us if your expectations and experience match our requirements

Our requirements

  • Minimum 5+ years of professional experience developing applications using the .NET ecosystem (C#, .NET Core / .NET 5+), including designing, implementing and maintaining backend services.
  • Strong object-oriented design and programming skills, with solid knowledge of design patterns, SOLID principles, and clean architecture.
  • Proven experience building and consuming RESTful APIs, Web APIs, and gRPC services; knowledge of API versioning, documentation (Swagger/OpenAPI) and authentication/authorization mechanisms (OAuth2, JWT, OpenID Connect).
  • Deep understanding of asynchronous programming, multithreading and concurrency in .NET (async/await, Task Parallel Library, thread-safety).
  • Hands-on experience with relational databases (SQL Server, PostgreSQL) and ORM tools (Entity Framework Core, Dapper); ability to design efficient schemas, write optimized queries and handle migrations.
  • Experience with NoSQL/datastore technologies (e.g., MongoDB, Redis) and when to apply them.
  • Familiarity with cloud platforms and services (Azure, AWS, or GCP), including deploying .NET applications, serverless functions, container services and cloud-native patterns.
  • Proficiency with containerization and orchestration: Docker, Kubernetes (or knowledge of managed container services).
  • Experience with CI/CD pipelines, build automation and release management (Azure DevOps, GitHub Actions, Jenkins, TeamCity, etc.).
  • Strong testing mindset: unit testing, integration testing, test automation frameworks (xUnit, NUnit, Moq) and experience enabling testable codebases.
  • Knowledge of logging, monitoring and diagnostics tools (Serilog, Application Insights, Prometheus, Grafana) and ability to troubleshoot production issues.
  • Familiarity with frontend technologies and SPA frameworks (Angular, React, or Vue) enough to collaborate with frontend teams and design end-to-end solutions.
  • Experience mentoring junior developers, conducting code reviews, and driving technical decisions and best practices across teams.
  • Excellent problem-solving, communication and collaboration skills; ability to work in Agile/Scrum environments and participate in planning, estimation and backlog refinement.
  • Security-aware development: secure coding practices, threat modeling, data protection (encryption, secure storage), and familiarity with common vulnerabilities (OWASP).
  • Performance tuning and scalability experience: profiling .NET applications, optimizing memory and CPU usage, caching strategies and load testing.
  • Experience with message brokers and event-driven architectures (RabbitMQ, Kafka, Azure Service Bus) and implementing pub/sub or CQRS patterns.
  • Familiarity with infrastructure-as-code practices and tools (Terraform, ARM templates, Bicep) is a plus.
  • Bachelor’s degree in Computer Science or related field, or equivalent practical experience; willingness to continuously learn and adopt new technologies.

What we offer

  • Ability to define your development path
  • Mentoring (with the use of practical tasks)
  • An informal but productive work environment

Podobne oferty

Więcej podobnych stanowisk

PROGNETICS SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ

Senior .NET Developer

  • Zdalnie
  • IT
  • Backend
  • Fullstack

120 - 145 zł / stawka godzinowa

... several projects simultaneously, you can change the project, you focus on product development, you focus on code maintenance, agile, scrum Team members, backend developer, fullstack developer Your responsibilities, We are looking for .NET Developer with a minimum of 6+ years' experience., , We're looking for talented professionals ...

Warszawa, Polska

YOUR ITEAMS sp. z o.o.

Senior .NET Developer

  • Zdalnie
  • Backend

130 - 150 zł / stawka godzinowa

Expected, .NET, .NET Core, C#, Entity Framework, TypeScript, Microsoft SQL Server, https://jobeax.com/link/6WcBICn0LM558SP0, Azure DevOps, UML Optional, Hangfire Operating system, Windows About the project, We are looking for a Senior .NET Developer to join a collaborative engineering team focused on delivering enterprise-grade ...

Warszawa, Polska

  • Zdalnie
  • Backend

120 - 180 zł / stawka godzinowa

Wymagane, C#, .NET, .NET Core, REST API, SQL Server O projekcie, Rozwijasz aplikacje w C# i .NET dla klientów z branży bankowej i ubezpieczeniowej. Pracujesz z kodem, który już działa na produkcji, budujesz integracje między systemami i wystawiasz usługi REST. Dobra decyzja w istniejącym kodzie zajmuje tu tyle samo czasu ...

Warszawa, Polska

Scalo Sp. z o.o.

Senior .NET Developer

  • Hybrydowo
  • Backend

140 zł / stawka godzinowa

... 140 PLN/h + VAT, w zależności od doświadczenia oraz zakresu świadczonych usług. minimum 4 lata doświadczenia w rozwoju aplikacji z wykorzystaniem technologii .NET,, bardzo dobra znajomość .NET, C# oraz https://jobeax.com/link/GrYTXLZMpxEMJknV Core,, doświadczenie w projektowaniu i implementacji usług REST API,, praktyczna ...

Warszawa, Polska

  • Hybrydowo
  • Pełny etat
  • Kontrakt
  • IT
  • Backend
... enterprise systems, enjoys solving complex data problems, and communicates clearly with both technical and business stakeholders., 5+ years of proven experience as a .NET Developer, Software Engineer, or in a similar role., Strong proficiency in C# and .NET Framework 4.x, including Windows Services, multithreading with the Task ...

Warszawa, Polska

IT CONNECT Sp. z o.o. Sp. k.

Senior .Net Developer

  • Backend
Senior .Net Developer Miejsce pracy: Łódź Technologie, których używamy Wymagane - .NET - C# - Entity Framework O projekcie Dla jednego z naszych klientów z sektora bankowego, poszukujemy .Net Developerów. Twój zakres obowiązków - analiza wymagań biznesowych oraz projektowanie i rozwój rozwiązań backendowych. - integracja ...

Łódź, Polska

  • Zdalnie
  • Kontrakt
  • Backend

100 - 110 zł / stawka godzinowa

... integracyjnych., Utrzymywanie procesów CI/CD oraz tworzenie dokumentacji technicznej. Solidnego, komercyjnego doświadczenia w programowaniu w C# oraz znajomości .NET Core i https://jobeax.com/link/GrYTXLZMpxEMJknV Core na poziomie Senior., Praktyki w budowaniu mikroserwisowych REST API., Biegłości w pracy z relacyjnymi bazami ...

Warszawa, Polska

  • Hybrydowo
  • Pełny etat
  • Kontrakt
  • IT
  • Backend
... enterprise systems, enjoys solving complex data problems, and communicates clearly with both technical and business stakeholders., 5+ years of proven experience as a .NET Developer, Software Engineer, or in a similar role., Strong proficiency in C# and .NET Framework 4.x, including Windows Services, multithreading with the Task ...

Warszawa, Polska

  • Hybrydowo
  • IT
  • Zarzadzanie produktem
  • Backend
Tech Stack: - C#, .NET 8+, https://jobeax.com/link/GrYTXLZMpxEMJknV Core - Azure, Azure OpenAI, Azure AI Search, LLM - AI development tools: Claude Code, Codex - CI/CD - Bicep/Terraform Project Description: We are looking for a strong Senior .NET Backend Developer to lead the development of AI capabilities in a SaaS platform ...

Wrocław, Polska

Social Discovery Group

Senior .NET Developer (Fintech)

  • Zdalnie
  • Pełny etat
  • Kontrakt
  • Backend

1000 €

... to be a two-time “Great Place to Work” winner (USA & Japan, 2024–2025) and a Top-5 Company for Work-From-Anywhere Jobs (FlexJobs, 2025). We are looking for a Senior .NET Developer (Fintech) . Your main tasks will be: - Develop and maintain backend services for payment processing and the back office: reconciliation, payouts, ...

Warząchewka Polska, Polska

Nexio Management Sp. z o.o.

Senior .NET Developer (k/m/n)

  • Zdalnie
  • Hybrydowo
  • Kontrakt
  • Backend
Wymagane, .NET, C#, Git, Azure DevOps O projekcie, Poszukujemy Senior .NET Developera, który dołączy do zespołu realizującego rozwój i utrzymanie aplikacji biznesowych. Osoba na tym stanowisku będzie odpowiadać za projektowanie i implementację rozwiązań w technologii .NET, rozwój logiki biznesowej oraz integrację systemów, ...

Poznań, Polska