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# Senior Software Engineer II, Payments Platform (Treasury & FX)

- **Company:** Flywire
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Amazon Web Services, Advanced Message Queuing Protocol, Databases, Continuous Integration, Relational Databases, Linux, Distributed Systems, PostgreSQL, MySQL, Object-Oriented Software Development, Redis, Ruby, Software Engineering, Backend, Front End Software Development, Docker
- **Published:** September 8, 2026
- **Apply:** https://www.collegerecruiter.com/job/2840573579-senior-software-engineer-ii-payments-platform-treasury--fx

## About the Role

* 8+ years of experience in professional software engineering
 * Proven experience with scalable, performant, and reliable distributed systems
 * Strong background in TDD, BDD, CI/CD practices
 * Understanding of relational databases
 * Strong fundamentals in object-oriented design
 * Excellent collaboration skills across functions (QA, Product, SRE, Stakeholders)
 * A passion for delivering high-quality code and a mindset of continuous learning
 * FinTech or payments industry experience is a major plus

Technologies We Use ️

 * Backend: Ruby, Java
 * Frontend: HTMX
 * Databases & Systems: Docker, Linux, MySQL, Postgres, Redis, AMQP, OpenSearch
 * Cloud: AWS

We value smart people who are quick learners. You do not need to have used every technology listed above.

## Description

As a Senior Software Engineer II, you will work on the core platform that powers global money movement, processing hundreds of millions of dollars every day for clients across industries. Your work will drive end-to-end optimization and automation in payment processing, reduce manual effort in treasury management and FX trading, and deliver significant business impact., * ? Collaborate with Product Managers and stakeholders to shape product vision and deliver real business value

 * ? Drive automation and optimization initiatives that reduce manual effort and unlock measurable business impact
 * ? Evaluate complex technical problems, using sound judgement to select the right methods and approaches
 * ️ Design, build, and maintain clean, secure, testable, and scalable code
 * Improve performance and scalability of our systems as we expand worldwide
 * ? Resolve challenging bugs and production issues, ensuring reliability of the global platform
 * ? Mentor teammates and take initiative in leading technical projects
 * ? Support recruitment efforts by helping identify and inspire great engineering talent


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