Senior Software Engineer - US Payments and Partner Operations (m/f/d)
Core
Own and deliver end-to-end features for the US Payments & Partner Operations stack, including ACH payments, reconciliation, bank linking, fraud integration, and B2B partner management.
Role type
Senior Full-Stack Engineer (US Payments & Partner Operations)
Builds
Core money-movement stack (ACH, reconciliation, returns), customer accounts lifecycle, and B2B partner onboarding/configuration
Domain
FinTech, US Payments, Banking Operations
Deliverable
production ML models | product features | infrastructure
Required skills
.NET Web API, SQL Server (design, querying, tuning), Clean/Onion Architecture, SOLID principles, Clean Code, React JS, JavaScript, HTML, Jest, OAuth, ASP.NET Identity
Preferred skills
Go, Node.js, Java/Spring Boot, GraphQL, MongoDB, NUnit
Technologies
.NET, SQL Server, React, JavaScript, HTML, Jest, Go, Node.js, Java, Spring Boot, GraphQL, MongoDB, NUnit, OAuth, ASP.NET Identity
Responsibilities
Design, optimize, and maintain robust enterprise APIs; Build and structure web applications; Perform complex database design and performance tuning; Contribute to new feature design and implementation; Provide constructive code review and solve complex problems; Identify and address bottlenecks in the delivery flow; Utilize AI tools to increase delivery pace; Promote best practices around the core stack; Transfer knowledge and mentor engineers; Flag process gaps and propose pragmatic improvements
Seniority
Senior, hands-on IC