Remote .NET Engineer – Custodial Solutions for Banks

About the role

We are a fintech company building custodial solutions for the banking sector. The role focuses on designing and implementing a secure, scalable backend for digital‑asset storage and management.

Key responsibilities

• Develop server‑side components of the custodial platform using ASP.NET Core.
• Design and optimise REST, WebSocket and GraphQL APIs.
• Implement authentication and authorisation mechanisms (OAuth2, JWT, Active Directory, 2FA).
• Work with Microsoft SQL Server, PostgreSQL, Redis and ClickHouse databases.
• Integrate blockchain networks such as Bitcoin, Ethereum, Solana and Polkadot.
• Interact with HSM and MPC solutions for key management.
• Build KYC/AML modules and transaction‑monitoring systems.
• Participate in DevOps processes (Docker, Kubernetes, CI/CD pipelines).

Required profile

• 2+ years of experience with C# and .NET (5/6/7).
• Proficiency in ASP.NET Core, Web API and SignalR.
• Understanding of micro‑service architecture and clean code principles (SOLID, Clean Architecture).
• Experience with Entity Framework, Dapper, LINQ and modern patterns (DI, CQRS).
• Hands‑on knowledge of PostgreSQL, Microsoft SQL Server, Redis and ClickHouse.
• Familiarity with banking API integration and security standards (OAuth2, JWT, encryption, HSM).
• Experience with gRPC, Minimal APIs and containerised applications (Docker, Docker‑Compose, Kubernetes).
• Ability to write unit, integration and load tests.

Required skills

• C#
• .NET 5/6/7
• ASP.NET Core
• Web API, SignalR
• REST, GraphQL, WebSocket
• OAuth2, JWT, Active Directory, 2FA
• Microsoft SQL Server
• PostgreSQL
• Redis
• ClickHouse
• Entity Framework
• Dapper
• LINQ
• gRPC
• Minimal API
• Docker, Docker‑Compose
• Kubernetes
• CI/CD pipelines
• HSM, MPC
• Blockchain integration (Bitcoin, Ethereum, Solana, Polkadot)
• KYC/AML systems
• SOLID, Clean Architecture, DI, CQRS

What we offer

• Fully remote work format.
• Competitive salary negotiated after interview.
• Access to cutting‑edge fintech and blockchain technologies.
• Paid courses, certifications and conference participation.
• Professional community of blockchain and fintech experts.
• Official employment under Belarus labour legislation.