The Mission
The CoupaPay team is the bridge between our customers and the global financial ecosystem. We build the
mission-critical infrastructure that allows businesses to initiate payments directly from the Coupa platform. This
isn't just about moving data; it’s about moving billions of dollars securely and reliably. You will tackle complex
payment formats, advanced message security (digital signatures, encryption), and diverse transport layers
(SFTP, APIs), ensuring that every cent reaches its destination safely
The Impact of a Sr. Software Engineer at Coupa:
As a Sr. Software Engineer, you will be a key architect of our scaling strategy. We are currently navigating the exciting transition of balancing a powerful consolidated codebase with the agility of microservices.
What You'll Do:
- Architect & Build: Collaborate with Product and Dev teams to design elegant solutions for global payment orchestration and financial connectivity.
- Technical Leadership: Mentor other engineers, driving a culture of excellence, curiosity, and "ownership" of the code.
- Solve Complex Problems: optimizing for high-volume transactions, horizontal scaling and high availability.
- Operational Excellence: Serve as a technical escalation point for production issues, ensuring our "mission-critical" promise is kept.
- Drive Best Practices: Advocate for SOLID principles, robust TDD, and clean architectural patterns.
What You Will Bring to Coupa:
- 5+ Years of Experience: High-level proficiency in software development, with a strong preference for candidates who have mastered both .NET and Ruby on Rails exp will be added advantage.
- The Stack: Working knowledge of .NET/Core with fluency in both C# and VB.NET, Ruby on Rails, React, and TypeScript.
- Data Expert: Fluency in T-SQL and MS SQL Server, including deep dives into database design and performance tuning.
- Data Transformation: Hands-on experience with XML, XSLT, XPath, and LINQ for XML (essential for bank messaging formats).
- Cloud & Scale: Experience building for AWS within a distributed microservices-oriented architecture.
- Security Mindset: Familiarity with digital signatures, encryption, and secure file transport is a major plus.
Architectural Thinking: Deep understanding of OOP, SOLID, and design patterns.
Attention to Detail: In payments, a single misplaced character matters. You take pride in "getting it
right”.
Communication: Impeccable English (written/verbal) and the ability to explain complex technical trade-
offs to non-technical stakeholders

