At a Glance
- Tasks: Join a high-performing team to build real-time payment systems using modern Java technologies.
- Company: Leading FinTech consultancy transforming the future of payments.
- Benefits: Hybrid working, competitive salary, and opportunities for professional growth.
- Other info: Fast-paced environment where your ideas and contributions are valued.
- Why this job: Make a real impact on global banking systems with cutting-edge technology.
- Qualifications: Strong Java experience and knowledge of reactive programming required.
The predicted salary is between 48000 - 72000 £ per year.
This range is provided by Fynity. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.
Base pay range
Direct message the job poster from Fynity
Practice Lead @ Fynity | Building Architecture and Product teams for leading orgs across the UK & Europe
Senior Software Product Engineer
London – 1 day a week onsite
🚀 Join a FinTech Powering the Future of Payments
Are you a seasoned individual contributor looking for a step up into a senior position within a high-performing team within the world of Banking/Payments? Are you passionate about high-throughput, real-time systems? This is your opportunity to help shape the core technology that powers instant payments for some of the world’s largest Banks.
We’re hiring on behalf of a leading payments consultancy, delivering cutting‑edge solutions that integrate seamlessly with bank infrastructure to enable real‑time, secure transactions across the globe.
What You’ll Be Doing
- Design and build scalable, high‑availability systems processing millions of real‑time transactions
- Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more
- Write clean, testable code using TDD and BDD
- Contribute to architectural decisions in a fast‑evolving codebase
- Collaborate within Agile teams (Kanban/Scrum)
What You Bring
We’re looking for engineers who are pragmatic, performance‑focused, and thrive on solving complex distributed systems problems.
- Strong hands‑on experience with Java 11+ (ideally Java 17)
- Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA)
- Experience with event‑driven architecture, real‑time messaging systems (Kafka, JMS)
- Familiarity with asynchronous request handling, scalability, and system resilience
- Agile mindset, with TDD/BDD and CI/CD experience
Bonus: Background in Banking/Payments is helpful but not required – if you’ve built high‑performance, real‑time systems, we want to talk to you.
What’s In It for You
- 🧠 Work with cutting‑edge tech on globally impactful systems
- 🏡 Hybrid working – 1 day a week (or more if you’d like!)
- 🌍 Opportunity to collaborate with major global banks
- 🚀 Fast‑paced, product‑led environment where your voice matters
If you're a motivated Senior Software Product Engineer ready to tackle complex challenges and deliver meaningful change, hit apply – and shape the future of payments with us.
Seniority level
Mid‑Senior level
Employment type
Full‑time
Job function
Engineering, Information Technology, and Other
Industries
Software Development, Financial Services, and IT Services and IT Consulting
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Senior Software Product Engineer employer: Fynity
Fynity is an exceptional employer, offering a dynamic work environment in Hemel Hempstead where you can contribute to vital Defence and National Intelligence systems. With a strong focus on employee growth, we provide opportunities for professional development and skill enhancement, all while fostering a collaborative culture that values innovation and teamwork. Join us to be part of a mission-driven team dedicated to tackling real-world threats, with the added advantage of working in a highly secure and supportive setting.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Product Engineer
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Fynity or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Fynity.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Fynity.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Fynity that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Software Product Engineer
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Fynity.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Fynity and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Fynity
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Fynity uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
