Senior Backend Software Engineer II, Payments Platform (FX)

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Passion, excitement & global collaboration are all core to what it means to be a FlyMate. At Flywire, we’re on a mission to deliver the world’s most important and complex payments. We use our Flywire Advantage - the combination of our next-gen payments platform, proprietary payment network and vertical specific software, to help our clients get paid, and help their customers pay with ease - no matter where they are in the world.

What more do we need to truly be unstoppable? Perhaps, that is you!


Who we are:
Flywire is a global payments enablement and software company, founded a decade ago to solve high-stakes, high-value payments in education, using modern technology.

Today, we’ve digitized payments for more than 3,300+ global clients across education, healthcare, travel & B2B, covering more than 240 countries and territories and supporting over 140 currencies. And, we’re just getting started!

With over 1000+ global FlyMates, representing more than 40 nationalities, and in 14 offices world-wide, we’re looking for FlyMates to join the next stage of our journey as we continue to grow.

Senior Backend Software Engineer II, Payments Platform (FX)

Location: London with Hybrid / Remote Options too

The Opportunity

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 — ideally with a background in FinTech — 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 automation in payment processing (from 0 to 80%), reduce manual effort in FX trading, and deliver clear visibility into significant yearly savings. By automating and optimising processes, you’ll enable our Payments Operations team to focus on higher-value, ROI-driven work — multiplying your impact across the business.

What You’ll Do

  • ✍️ Design, build, and maintain clean, secure, testable, and scalable code
  • Resolve challenging bugs and production issues, ensuring reliability of the global platform
  • Evaluate complex technical problems, using sound judgement to select the right methods and approaches
  • ⚡ Improve performance and scalability of our systems as we expand worldwide
  • Drive automation initiatives that reduce manual effort and unlock measurable business savings
  • Collaborate with Product Managers and stakeholders to shape product vision and deliver real business value
  • Mentor teammates and take initiative in leading technical projects
  • Support recruitment efforts by helping identify and inspire great engineering talent

    • What We’re Looking For

  • 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, React
  • Databases & systems: Linux, MySQL, Postgres, Redis, AMQP, OpenSearch
  • Cloud: AWS

    • ⚡ Why Join Us?
    At Flywire, you’ll have the freedom to innovate, the scale to make a global impact, and the support of a culture that values collaboration, curiosity, and excellence. Every line of code you write helps power the movement of money across borders — making payments faster, smarter, and more efficient worldwide .

    What We Offer:

  • Competitive compensation, including Restricted Stock Units
  • Employee Stock Purchase Plan (ESPP)
  • Flying Start - Our immersive Global Induction Program
  • Work with brilliant people that will keep you on your toes, learn more about their journeys by checking out #InsideFlywire on social media
  • Dynamic & Global Team (we have been collaborating virtually for years!)
  • Wellbeing Programs (Mental Health, Wellness) with Global FlyMates
  • Be a meaningful part in our success - every FlyMate makes an impact
  • Competitive time off including FlyBetter Days to volunteer in a cause you believe in and
  • Digital Disconnect Days!
  • Great Talent & Development Programs
    • Apply
    Location:
    London
    Job Type:
    FullTime