Senior.NET Engineer

About the Position

We are seeking a Senior .NET Engineer to drive one of our projects built on Fintech.Core, our modular white-label fintech platform.

The ideal candidate will lead a product module development and take ownership of both the technical quality and efficiency within a major client deployment. The role includes acting as a technical expert at the module domain level, responsible for making integration decisions, and ensuring alignment with security, reliability, and other non-functional expectations.

This position is well suited for a proactive engineer with solid experience in the fintech or related domain.

Responsibilities

• Lead product module development on Fintech.Core and take ownership of technical quality and delivery efficiency within a major client deployment
• Act as a technical expert at the module domain level and make sound integration decisions
• Ensure solutions align with security, reliability, and other non-functional expectations
• Design and implement scalable .NET backend services, APIs, and integrations across the platform
• Collaborate with the team and stakeholders to resolve technical challenges and keep delivery on track

Requirements

• At least 5 years of experience as a Software Engineer
• Experience with banking or fintech projects
• Understand the big picture and offer insightful advice about technologies and projects
• Strong problem-solving skills and the ability to manage and resolve team conflicts effectively
• Proficiency in designing and implementing software architectures
• Clean coding methodologies (SOLID, YAGNI)
• Professional.NET backend development experience
• Experience writing and using REST APIs using ASP.NET Web API
• Wide experience with Docker is required
• Experience with Kubernetes is required
• Databases: SQL {PostgreSQL, MySQL}, NoSQL {Apache Cassandra, Redis, MongoDB}
• Experience with queue (RabbitMQ, Kafka)
• English level - B2+
• Additional languages - Ukrainian/Polish

Nice to Have

• Experience in working with gRPC protocol
• Experience in solution design for complex microservice-based architectures
• Proven experience as a Tech Lead or similar leadership role in software development
• Excellent communication and interpersonal skills, with experience in client-facing roles
• Cloud: AWS

We Offer

• 20 billable days off in the first year of cooperation, all next years - 25 billable days off
• Fair and competitive compensation
• Friendly team and enjoyable working environment
• Clearly described business processes in the company that really work
• Regular updates on company news, Q&A sessions with top management
• Flexible work schedule
• Remote work mode
• Ability to transfer unused vacation to the next year

About the Company

We are a company that specializes in developing modular white-label fintech platforms based on microservices architecture designed for financial institutions. Our platform is cloud-agnostic by design and currently runs on AWS, using Kubernetes,.NET Core, PostgreSQL, gRPC protocol, RabbitMQ (MassTransit).