Lead Backend Developer (.NET) in Lithuania

Summary

Andersen is hiring a Lead Backend Developer (.NET) in Lithuania to lead the engineering of greenfield payment initiatives in a regulated fintech environment.

The customer is an organization operating in the technology and consulting domain, supporting businesses with the implementation of digital initiatives and process improvements. The company delivers a range of services related to software solutions, system enhancements, and advisory support, helping clients adapt to evolving technological landscapes through flexible engagement approaches and scalable delivery models.

The project is focused on leading the engineering delivery of greenfield payment initiatives within a regulated fintech environment. The role combines technical leadership with hands-on development, aimed at building modern, secure, and scalable payment platforms.

Responsibilities

• Leading technical design and delivery of backend payment platforms using C# / .NET.
• Developing and maintaining payment processing services supporting real-time and batch flows.
• Guiding implementation of ISO 20022 and SWIFT MT/MX messaging.
• Leading integration efforts with bank APIs, payment rails, and file-based channels.
• Owning code quality, architecture alignment, reviews, and mentoring.
• Ensuring security, compliance, resilience, and auditability of payment flows.
• Collaborating closely with product, compliance, and engineering teams.
• Driving CI/CD practices, testing strategy, and technical documentation.

Requirements

• Hands-on experience with C# / .NET (Core / 6 / 7 / 8) for 7+ years.
• Proven experience as Tech Lead / Senior Engineer on complex backend systems.
• Strong experience with payment systems and banking integrations.
• Solid knowledge of ISO 20022, SEPA, and payment messaging standards.
• Hands-on experience with SWIFT, FPS, BACS, CHAPS, TARGET2.
• Experience in Open Banking and regulated financial environments.
• Strong skills in REST, SOAP, SFTP, XML/JSON, message queues, and SQL Server.
• Experience with Docker, CI/CD pipelines, and secure coding practices.
• Excellent communication and leadership skills.
• Level of English – from Upper-Intermediate and above.

Desired skills

• Experience with core banking platforms or digital wallets.
• Knowledge of clearing, settlement, and cut-off time processes.
• Experience with cloud-native architectures (Azure / AWS).

Other important skills for the vacancy are described in the knowledge matrix

Reasons to join us

• Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc..
• The opportunity to change the project and/or develop expertise in an interesting business domain.
• Job conditions – you can work both fully remotely and from the office or can choose a hybrid variant.
• Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee.
• The opportunity to earn up to an additional 1,000 USD per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities.
• Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated.
• Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies).
• Certification compensation (AWS, PMP, etc).
• Referral program.
• English courses.
• Private health insurance and compensation for sports activities.

Join us!

Locations

Lithuania