Freelance Senior .NET Developer / Tech Lead

Project/Client: Fintech

Location: Lithuania

**Start Date:**ASAP

Duration: 12 months

**Language:**English

Role Overview:

We’re looking for a Senior .NET Developer / Tech Lead to join our engineering team and build payment-focused backend solutions in a regulated fintech environment. This is a hands-on role combining software development with technical leadership. You’ll design and develop backend services, contribute to technical and architectural decisions, and help the team maintain high engineering standards.

Key Responsibilities:

Design and develop backend services using C# / modern .NET

Contribute to technical design and architectural decisions

Build integrations with REST APIs, third-party platforms, messaging, and file-based interfaces

Ensure code quality through code reviews and engineering best practices

Mentor developers and lead technical discussions

Work with SQL, relational databases, CI/CD, and Docker

Build secure, reliable, and scalable software solutions

Collaborate with product, compliance, QA, and other engineering teams

Must-Have Requirements:

7+ years of hands-on C# / .NET experience

Strong backend development experience

Experience with REST APIs, integrations, and distributed systems

Strong SQL and relational database experience

Experience with Docker and CI/CD

Understanding of secure and reliable software development

Experience as a Senior Engineer, Tech Lead, or similar

Ability to take technical ownership and guide other developers

Nice to Have:

Experience in payments, banking, fintech, or financial services

Experience in a regulated / compliance-driven environment

Knowledge of ISO 20022 / SEPA

Understanding of clearing, settlement, or payment processing

Experience with Azure or AWS

Originally posted on Himalayas