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

Posted February 26, 2026
Full-time Mid-Senior Level

Job Overview

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

Work for a global payments leader, consistently ranked one of the best companies to work for 🌍.

At Flywire, we’re building and scaling the core platform that powers global money movement — processing hundreds of millions every day for clients across industries. We’re looking for an experienced Senior Software Engineer II to play a pivotal role in strengthening the very heart of our payments engine.

Your work won’t just be about clean code: it 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. 

What You’ll Do

  • 🤝 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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