Senior Software Engineer II, Payments Platform

Flywire

Flywire

Software Engineering
Valencia, Spain
Posted on Mar 6, 2026

Company Description

Are you ready to trade your job for a journey? Become a FlyMate!

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 more than a decade ago to solve high-stakes, high-value payments in higher education. We’ve since scaled into new regions and industry verticals and expanded our product offerings to deliver meaningful value to our clients around the world.

Today we support more than 4,600 clients across the global education, healthcare, travel & B2B industries, with diverse payment methods across 240 countries & territories and more than 140 currencies.

With over 1,200 global FlyMates, representing more than 40 nationalities, and in 12 offices world-wide, we’re looking for FlyMates to join the next stage of our journey as we continue to grow.

Senior Software Engineer II, Payments Platform

At Flywire, we’re on a mission to power the world’s most important payments 🌍. Our global payments platform moves hundreds of millions every day 💸, helping businesses and institutions get paid easily, securely, and across borders.

We’re looking for an experienced Senior Software Engineer II to help build and scale the platform behind our industry-leading payment engine ⚙️. This is a chance to work on complex, high-impact systems in a Nasdaq-listed FinTech recognised as one of the best companies to work for ⭐.

As part of a cross-functional team, you’ll design new features, improve scalability and cost efficiency, and ensure our systems perform at the highest level. Beyond code, you’ll mentor teammates, influence technical direction, and contribute to Flywire’s culture of innovation and shared ownership 🤝.

Senior Software Engineer II, Payments Platform

The Opportunity

At Flywire, we’re on a mission to power the world’s most important payments 🌍. Our global payments platform moves hundreds of millions every day 💸, helping businesses and institutions get paid easily, securely, and across borders.

We’re looking for an experienced Senior Software Engineer II to help build and scale the platform behind our industry-leading payment engine ⚙️. This is a chance to work on complex, high-impact systems in a Nasdaq-listed FinTech recognised as one of the best companies to work for ⭐.

As part of a cross-functional team, you’ll design new features, improve scalability and cost efficiency, and ensure our systems perform at the highest level. Beyond code, you’ll mentor teammates, influence technical direction, and contribute to Flywire’s culture of innovation and shared ownership 🤝.

What You’ll Do

  • 🤝 Collaborate with Product Managers and stakeholders to shape product vision and deliver real business value
  • 🧠 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

Qualifications

  • 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

* Don't worry if you haven't used all (or any of) these technologies. We value smart people who are quick learners.

Our Culture

  • We are a global company. Our engineering team is distributed across 3 continents and 4 different countries so remote work is allowed!
  • Our engineering practice is shaped around concepts including Agile, Lean, and Extreme Programming. Each team has a high level of autonomy to organize themselves in the way they consider more appropriate to execute their mission.
  • We actively engage in knowledge sharing by hosting internal cross-discipline events.
  • We are active in contributing to open source whenever possible.
  • We contribute to our local communities by hosting different events, Meetups, etc

Additional Information

Submit today and get started!

We are excited to get to know you! Throughout our process you can expect to meet with different FlyMates including the Hiring Manager, Peers on the team, the VP of the department, and a skills assessment. Your Talent Acquisition Partner will walk you through the steps and be your “go-to” person for any questions.

Flywire is an equal opportunity employer. With over 40 nationalities across 12 different offices, and diversity and inclusion at the core of our people agenda, we believe our FlyMates are our greatest asset, and we’re excited to watch our unique culture evolve with each new hire.

Flywire is an equal opportunity employer.