Senior Software Engineer II in City of London
Senior Software Engineer II

Senior Software Engineer II in City of London

City of London Full-Time 48000 - 72000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and build secure, scalable code for global payment processing.
  • Company: Join Flywire, a leading global payments software company.
  • Benefits: Competitive pay, stock options, wellness programs, and flexible time off.
  • Why this job: Make a real impact on global money movement and automation.
  • Qualifications: 8+ years in web development; FinTech experience is a plus.
  • Other info: Dynamic, diverse team with excellent growth opportunities.

The predicted salary is between 48000 - 72000 £ per year.

Are you ready to trade your job for a journey? Become a FlyMate! Passion, excitement and global collaboration are 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.

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 and B2B, covering more than 240 countries and territories and supporting over 140 currencies. We’re just getting started!

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 web application development
  • Solid understanding of relational databases and object-oriented fundamentals
  • Skilled in test-driven and behaviour-driven development (TDD/BDD)
  • Experience with CI/CD pipelines and modern development practices
  • Strong collaboration skills and ability to partner effectively with QAs, Product, and SREs
  • Excellent communication skills — able to explain complex ideas clearly and persuasively
  • Fluent in English (our company’s working language)
  • Experience in FinTech or the payments industry (a plus, but not required)
  • A passion for delivering high-quality code and a mindset of continuous learning

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
  • 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

Submit today and get started! We are excited to get to know you!

Flywire is an equal opportunity employer. With over 30 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.

Senior Software Engineer II in City of London employer: Flywire

At Flywire, we pride ourselves on being a global leader in payments enablement, offering an innovative and collaborative work environment that empowers our FlyMates to make a real impact. With competitive compensation, comprehensive wellbeing programs, and a strong focus on employee growth and development, we foster a culture of curiosity and excellence where every team member can thrive. Join us in our mission to revolutionise payment processing while enjoying the benefits of a dynamic, diverse, and inclusive workplace.
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Contact Detail:

Flywire Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Software Engineer II in City of London

✨Tip Number 1

Network like a pro! Reach out to current FlyMates on LinkedIn or at events. A friendly chat can give you insider info and maybe even a referral, which can really boost your chances.

✨Tip Number 2

Prepare for the interview by brushing up on your technical skills. Practice coding challenges and be ready to discuss your past projects. Show us how your experience aligns with our mission at Flywire!

✨Tip Number 3

Don’t just focus on the technical stuff; show us your passion for payments and FinTech. Share your thoughts on industry trends and how you can contribute to Flywire’s growth during the interview.

✨Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in joining the Flywire family. Let’s make this happen!

We think you need these skills to ace Senior Software Engineer II in City of London

Web Application Development
Relational Databases
Object-Oriented Programming
Test-Driven Development (TDD)
Behaviour-Driven Development (BDD)
CI/CD Pipelines
Collaboration Skills
Communication Skills
Problem-Solving Skills
Automation Initiatives
Mentoring
Technical Project Leadership
Experience in FinTech
Continuous Learning Mindset

Some tips for your application 🫡

Show Your Passion: When you're writing your application, let your passion for technology and payments shine through! We want to see your excitement about the role and how you can contribute to our mission at Flywire.

Tailor Your CV: Make sure to customise your CV to highlight your relevant experience in web application development and FinTech. We love seeing how your skills align with what we’re looking for, so don’t hold back!

Be Clear and Concise: Keep your application clear and to the point. Use straightforward language to explain your experience and achievements. We appreciate clarity, especially when it comes to complex ideas!

Apply Through Our Website: Don’t forget to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. We can’t wait to see what you bring to the table!

How to prepare for a job interview at Flywire

✨Know Your Code Inside Out

As a Senior Software Engineer II, you’ll need to demonstrate your coding skills. Brush up on your clean, secure, and scalable coding practices. Be ready to discuss your past projects and the specific challenges you faced, especially in FinTech or payment systems.

✨Showcase Your Problem-Solving Skills

Expect to tackle complex technical problems during the interview. Prepare examples of how you've resolved challenging bugs or improved system performance. Highlight your sound judgement in selecting methods and approaches that led to successful outcomes.

✨Emphasise Collaboration

Flywire values teamwork, so be prepared to discuss how you’ve collaborated with Product Managers, QAs, and other stakeholders. Share experiences where your collaboration led to delivering real business value, and don’t forget to mention any mentoring roles you've taken on.

✨Communicate Clearly

Excellent communication is key! Practice explaining complex ideas in a clear and persuasive manner. You might be asked to present a technical concept, so ensure you can articulate your thoughts effectively, making it easy for non-technical team members to understand.

Senior Software Engineer II in City of London
Flywire
Location: City of London
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  • Senior Software Engineer II in City of London

    City of London
    Full-Time
    48000 - 72000 £ / year (est.)
  • F

    Flywire

    201-500
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