Senior Engineer, Software Development
Core
Senior backend engineer building and maintaining critical payment platform services, including transaction processing, settlement, and merchant integrations.
Role type
Senior IC backend software engineer (fintech)
Builds
Production payment services, APIs, and system integration components
Domain
Fintech / Payments
Deliverable
production ML models | product features
Required skills
Java, C# .NET, Python, REST APIs, TSQL, No-SQL, distributed systems, AI coding tools (Claude, Codex, Kiro), system design, performance optimization, security
Preferred skills
Payment gateway knowledge, card acquiring/issuing, authorization/capture/refund logic, QR/wallet/bank transfer integration, PCI DSS, encryption, tokenization
Technologies
Java, C# .NET, Python, SQL Server, MySQL, Claude, Codex, Kiro
Responsibilities
Design and develop new features for transaction processing, merchant services, and reconciliation; build and maintain APIs and backend services; troubleshoot production incidents; guide junior engineers on coding standards; review code for design, performance, and security; propose scalable technical solutions.
Seniority
Senior, hands-on IC
