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Open nowFirst seen 41 hours ago

Senior .NET Developer

AIDA279 open roles

Where
Vilnius, Vilnius City Municipality, Lithuania, Remote
Work mode
Remote
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Your applicationOpen nowSenior .NET DeveloperAIDA · Vilnius, Vilnius City Municipality, Lithuania, Remote

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The clock on this job

Early applications get read.

11.8% of postings close within 7 days. Measured by our own scanner across the market. AIDA postings stay open a median of 1 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.4%3 days
  3. 11.8%7 days
  4. 18.6%14 days
  5. 35.6%30 days
  6. 45.1%60 days
This job: first seen 41 hours ago

AIDA median: 1 days open

The posting

For our client in the public sector, we are seeking a Senior .NET Developer fluent in Lithuanian to join a high-impact project delivering robust backend systems and APIs for fast, secure, and scalable information access. The project involves developing a system that enables efficient information filtering and access while working with a modern tech stack, including C#, Keycloak, OpenShift, YARP, Grafana, Sentry, Parquet, and SPARQL.

Key Requirements:

  • Strong experience with C#/.NET Core for scalable backend and API service development
  • Hands-on experience with containerized deployments (OpenShift/Kubernetes)
  • Expertise in API Gateway & Proxy development: request routing, logging, monitoring, auditing, rate limiting, retries, and resilience
  • Identity & Security: integrating with Keycloak (OAuth2.0/OpenID Connect), JWT validation, secure API design
  • Knowledge of observability and audit: structured logging, distributed tracing, metrics, audit trails
  • Proficient in integration with external systems
  • Experience with asynchronous processing (workers/event-driven, queue handling, retry/DLQ strategies)
  • Experience with CI/CD, secure coding, and advanced testing practices
  • Fluency in Lithuanian is mandatory

Nice to Have:

  • Familiarity with YARP, Grafana, Sentry, Parquet, SPARQL
  • Prior experience in the public sector or large-scale information systems

Responsibilities:

  • Design, develop, and maintain scalable .NET Core backend services and APIs
  • Implement API Gateway and Proxy solutions, ensuring reliability, security, and observability
  • Integrate identity management solutions using Keycloak, JWT, and OAuth2.0/OpenID Connect
  • Implement asynchronous processing pipelines, message queues, and retry/DLQ strategies
  • Collaborate with cross-functional teams to deliver secure, maintainable, and efficient systems
  • Apply CI/CD, secure coding, and automated testing best practices
  • Ensure proper monitoring, logging, and auditing across all services
  • Maintain documentation and participate in code reviews, troubleshooting, and performance optimization

Work Conditions:

  • Project: Public Sector
  • Location: Remote from Lithuania
  • Start Date: ASAP
  • End Date: 2026-04-01
  • Contract Type: B2B
  • Salary: 25-34 EUR/h

If you're passionate about building secure, scalable, and high-performance backend solutions and want to make a tangible impact on public sector services, we'd love to hear from you!

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