Senior Back End Software Engineer

About the role

XeXe is rebuilding the platform layer behind cross‑border payments for corporate and consumer clients. As a Senior Back End Software Engineer you will own end‑to‑end problems, from API design and data modeling to service implementation, reliability, and launch.

Key responsibilities

• Design, develop, and own backend services that move money and manage multi‑currency balances across onboarding, KYC/KYB, payment initiation, FX, settlement and related domains.
• Lead cross‑functional delivery with product, compliance and operations teams from problem framing through launch.
• Build partner integrations and settlement infrastructure required by your domain.
• Own production health, including reliability, observability, on‑call duties and incident response.
• Conduct design reviews, set technical direction, and mentor mid‑level engineers.
• Use agentic coding tools (Copilot, Cursor, Claude Code, or equivalents) daily across the software development lifecycle and modernize legacy services.

Required profile

• 6‑10+ years of experience building production backend services end‑to‑end.
• Strong proficiency in C#/.NET (other OOP languages such as Java, Kotlin, Go are acceptable).
• Solid understanding of SQL and relational databases.
• Hands‑on experience with AWS services (SQS, DynamoDB, S3, ECS, Lambda) and CI/CD pipelines.
• Proven system design and architecture skills, especially microservices and event‑driven patterns.
• Experience in payments, FX or other regulated industries.
• Track record of technical leadership, mentoring, and architecture decision‑making.
• Excellent written and verbal communication.

Required skills

• C# / .NET
• Java, Kotlin, Go (optional)
• SQL and relational databases
• AWS (SQS, DynamoDB, S3, ECS, Lambda)
• CI/CD pipelines
• Microservices & event‑driven architecture
• Agentic coding tools (Copilot, Cursor, Claude Code)
• Automated testing