Senior .NET Backend Developer
Vilnius, Vilniaus
Operations, Platform & IT – Research & Development /
Full-time /
Hybrid
Companial R&D team is looking for a backend developer to join a skilled team which always strives for the best quality and uses the best practices and tools to achieve that. You are the right fit for us if you are eager to grow, improve yourself and improve existing things, innovate and create new things for our customers. The working place is in Vilnius, Kaunas or remote.
If you like cross-culture organization, cutting edge technologies, new challenges and desire to make IT a better place, you are the person we are looking for!
Responsibilities:
- Develop web applications using .NET core v8 (C#)
- Be the technical cornerstone for the team of developers
- Evaluate new projects, suggest solutions and the best practices for tasks
- Ensure high quality using coding standards, test driven development and code reviews (we use Azure DevOps for our CI/CD pipelines, pull requests and product backlog management)
- Work in team environment, teach and learn as necessary
What we expect:
- 5+ years building and operating backend systems in C#/.NET (Core and Framework).
- 2+ years in a senior or technical-lead capacity, guiding architecture decisions and mentoring others.
- Expert in C#, ASP.NET Core.
- Deep knowledge of microservices patterns (API Gateways, CQRS).
- Proven track record designing high-throughput, low-latency distributed systems.
- Hands-on experience with Dapper or Cosmos DB SDK for high-performance queries.
- Familiarity with EF Core.
- Working knowledge of both Cosmos DB and Azure SQL Database for transactional and NoSQL scenarios.
- Hands-on with Azure compute (App Services, Kubernetes Service, Functions) and storage services (Blob, Tables).
- Azure Service Bus for reliable, scalable messaging between microservices.
- Experience designing for cost-efficiency and auto-scaling in cloud environments.
- Strong communicator—able to explain complex designs to both technical and non-technical stakeholders.
- Proven collaborator in agile teams (Scrum/Kanban).
- Proactive problem solver: performance tuning, capacity planning, root-cause analysis.
- Infrastructure as Code familiarity (ARM, Bicep or Terraform)—collaborating closely with the DevOps team
- Familiarity with Azure Active Directory, Microsoft Graph API, Managed Identities and Conditional Access
- Experience integrating with internal Microsoft services or APIs (Partner Center APIs, CSP billing endpoints)
- Understanding of Microsoft’s security/compliance standards (ISO, GDPR, CIS Benchmarks)
- On hand experience with Blazor Pages and Azure Functions
Programming & Architecture:
Data Access:
Azure Infrastructure & Services:
Soft Skills:
Nice-to-Haves
We offer:
- A highly skilled international team working with the leading Microsoft based technologies
- Be part of a team that supports each other and shares knowledge openly
- Work in a company where values matter - We Care, Own, Create, and Enjoy
- Training and development opportunities
- An informal and social working environment in a fast-growing international IT organization
- Additional vacation days
- Flex benefits bonus focused on health and wellbeing
- Health insurance (after probation period)
- Life and risk insurance
- Annual company events, team buildings
- Workout classes (Pilates, volleyball)
- Flexible working hours
- The salary range is 4500 - 6500 EUR GROSS / month depending on your experience
Companial is the largest and fastest-growing international network of Microsoft Dynamics Partners.
Companial supports its Dynamics Partners – Resellers, System Integrators, Service Providers, and ISVs – with business and technical services aimed at growing revenue, lowering costs, and improving customer satisfaction. Companial is an official SMB ERP Distributor; Indirect CSP Provider for Microsoft; a Microsoft ISV Development Center; and Member of the Partners Advisory Council. Companial’s high-quality Microsoft Dynamics 365 upgrade, development, and migration services, together with its leading Microsoft Azure managed hosting service, helps Microsoft Partners offer better business value to their customers when delivering solutions on-premises and/or in the cloud. Companial is currently delivering and supporting over 1000 Dynamics Partners in more than 40 countries worldwide.
