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Technologies & tools

Must have

C# ASP.NET Core Web Services Entity Framework Core React.js JavaScript TypeScript PostgreSQL Docker Kubernetes Microservices REST

Nice to have

AzureDevOps Jenkins GitHub Actions Microsoft Azure AWS GCP RabbitMQ Apache Kafka Helm OPC UA xUnit NUnit Jest

We are looking for a Senior Full Stack .NET Developer to build and maintain modern enterprise applications using .NET and React technologies. You will design scalable microservices, develop responsive user interfaces, optimize database performance, and collaborate with cross-functional teams to deliver secure, high-quality software solutions following Agile and DevOps best practices.

Your tasks

Designing, developing, and maintaining end-to-end web applications using ASP.NET Core, React.js, and microservices architecture
Building secure REST APIs, implementing authentication and authorization mechanisms, and developing responsive user interfaces using modern JavaScript frameworks
Optimizing PostgreSQL databases by designing schemas, improving query performance, and implementing efficient migration strategies
Deploying, monitoring, and maintaining containerized applications using Docker, Kubernetes, and CI/CD pipelines across cloud environments
Collaborating with architects, QA engineers, DevOps teams, and business stakeholders while troubleshooting production issues and ensuring software quality

Requirements

Minimum 6 years of professional experience in full stack application development using C#, ASP.NET Core, Web API, Entity Framework Core, and React.js
Strong knowledge of JavaScript, TypeScript, Redux/Context API, PostgreSQL, microservices architecture, authentication (JWT, OAuth2, IdentityServer), and REST API development
Hands-on experience with Docker, Kubernetes, CI/CD tools (Azure DevOps, Jenkins, or GitHub Actions), Git, and Agile/Scrum methodologies
Familiarity with cloud platforms (Azure, AWS, or GCP), unit testing frameworks, message brokers (RabbitMQ or Kafka), and distributed systems; knowledge of OPC UA or industrial automation is an advantage
Fluent English - minimum B2 level

Nice to have

Experience with industrial automation or manufacturing domain projects
Knowledge of Helm charts, Kubernetes networking, and scalable distributed architectures
Familiarity with performance tuning, load testing, and application monitoring tools
Experience implementing automated testing using xUnit, NUnit, or Jest
Opportunity to work with modern cloud-native technologies in a collaborative Agile environment

Job no. JOB-CUWVJ

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Technologie i narzędzia

Wymagane

C# ASP.NET Core Usługi Sieciowe Entity Framework Core React JavaScript TypeScript PostgreSQL Docker Kubernetes Mikrousługi REST

Mile widziane

Azure DevOps Jenkins GitHub Actions Microsoft Azure AWS GCP RabbitMQ Apache Kafka Helm OPC Zunifikowana Architektura xUnit NUnit Jest

Szukamy Senior Full Stack .NET Developera do tworzenia i utrzymywania nowoczesnych aplikacji korporacyjnych z wykorzystaniem technologii .NET i React. Będziesz projektować skalowalne mikroserwisy, rozwijać responsywne interfejsy użytkownika, optymalizować wydajność baz danych oraz współpracować z zespołami wielofunkcyjnymi, dostarczając bezpieczne, wysokiej jakości rozwiązania programistyczne zgodnie z najlepszymi praktykami Agile i DevOps.

Twoje zadania

Projektowanie, rozwijanie i utrzymywanie kompleksowych aplikacji webowych z użyciem ASP.NET Core, React.js oraz architektury mikroserwisów
Tworzenie bezpiecznych REST API, implementacja mechanizmów uwierzytelniania i autoryzacji oraz rozwój responsywnych interfejsów użytkownika z wykorzystaniem nowoczesnych frameworków JavaScript
Optymalizacja baz danych PostgreSQL poprzez projektowanie schematów, poprawę wydajności zapytań oraz wdrażanie efektywnych strategii migracji
Wdrażanie, monitorowanie i utrzymywanie aplikacji konteneryzowanych z użyciem Dockera, Kubernetes oraz pipeline'ów CI/CD w środowiskach chmurowych
Współpraca z architektami, inżynierami QA, zespołami DevOps oraz interesariuszami biznesowymi, rozwiązywanie problemów produkcyjnych i zapewnianie jakości oprogramowania

Wymagania

Minimum 6 lat doświadczenia zawodowego w tworzeniu aplikacji full stack z użyciem C#, ASP.NET Core, Web API, Entity Framework Core oraz React.js
Silna znajomość JavaScript, TypeScript, Redux/Context API, PostgreSQL, architektury mikroserwisów, uwierzytelniania (JWT, OAuth2, IdentityServer) oraz tworzenia REST API
Praktyczne doświadczenie z Dockerem, Kubernetes, narzędziami CI/CD (Azure DevOps, Jenkins lub GitHub Actions), Gitem oraz metodykami Agile/Scrum
Znajomość platform chmurowych (Azure, AWS lub GCP), frameworków do testów jednostkowych, brokerów wiadomości (RabbitMQ lub Kafka) oraz systemów rozproszonych; znajomość OPC UA lub automatyki przemysłowej będzie dodatkowym atutem
Biegła znajomość języka angielskiego - minimum poziom B2

Mile widziane

Doświadczenie w projektach z zakresu automatyki przemysłowej lub branży produkcyjnej
Znajomość Helm charts, sieciowania Kubernetes oraz skalowalnych architektur rozproszonych
Znajomość narzędzi do strojenia wydajności, testów obciążeniowych i monitorowania aplikacji
Doświadczenie we wdrażaniu testów automatycznych z użyciem xUnit, NUnit lub Jest
Możliwość pracy z nowoczesnymi technologiami cloud-native w zespołach Agile

Nr oferty JOB-CUWVJ

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Senior Full Stack .NET Developer (f/m/x)

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Benefits for you

Diverse portfolio of clients
Wide portfolio of technologies
Employment stability
Remote work opportunities
Contracts with the biggest brands
Great Place to Work Europe
Many experts you can learn from
Open and accessible management team

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