At a Glance
- Tasks: Design and scale backend systems for a fast-growing fintech platform.
- Company: Exciting Series A AI/fintech scale-up based in London.
- Benefits: Competitive salary up to £270k, flexible work options, and growth opportunities.
- Other info: Collaborate closely with leadership in a dynamic, high-growth environment.
- Why this job: Join a mission-critical team and make a real impact on financial technology.
- Qualifications: 8+ years in backend systems, strong Python and cloud experience required.
I’m working on a really interesting platform scaling hire for a fast-growing Series A AI/fintech company in London. They’ve built a product that processes millions of sensitive financial documents for lenders, brokers, insurers and fintechs across the US and UK. The platform is already mission-critical for customers — but rapid growth means the backend now needs to evolve from “built for speed” to “built for scale.” This role will work closely with the CTO and Head of Engineering and take real ownership of the core backend systems.
Key challenges include:
- Designing backend abstractions so a small engineering team can ship quickly and safely
- Scaling multi-tenant infrastructure across enterprise customers with different security and SLA requirements
- Supporting high-throughput document processing and ML pipelines
- Strengthening security, reliability and compliance around sensitive financial data
- Scaling systems from millions → tens of millions of documents
Requirements:
- ~8+ years building and scaling backend systems
- Experience in high-growth B2B SaaS environments (Series A → C)
- Strong Python + cloud infrastructure experience
- Experience working with large volumes of regulated or sensitive data
- Hands-on IC mindset — someone who enjoys architecting and building
- A strong background in Computer Science, with a university degree from a top ranked Global University is essential
Principal Engineer - Series A FinTech Scale-Up in London employer: Oliver Bernard
Join a dynamic and innovative Series A FinTech scale-up in London, where you'll have the opportunity to shape the future of financial technology. With a strong focus on employee growth, collaborative work culture, and competitive compensation, this company offers a unique environment for talented engineers to thrive. You'll work alongside industry leaders, tackle exciting challenges, and contribute to a mission-critical platform that is transforming the way sensitive financial documents are processed.
StudySmarter Expert Advice🤫
We think this is how you could land Principal Engineer - Series A FinTech Scale-Up in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the fintech and engineering space. Attend meetups or webinars where you can chat with industry folks. You never know who might have the inside scoop on job openings!
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repository showcasing your projects, especially those involving Python and AWS. This gives potential employers a taste of what you can do and sets you apart from the crowd.
✨Tip Number 3
Prepare for interviews by brushing up on system design and architecture principles. Since this role involves scaling backend systems, be ready to discuss your past experiences and how you've tackled similar challenges.
✨Tip Number 4
Don’t forget to apply through our website! We’ve got some fantastic opportunities waiting for you, and applying directly can sometimes give you an edge. Plus, it’s super easy to navigate!
We think you need these skills to ace Principal Engineer - Series A FinTech Scale-Up in London
Some tips for your application 🫡
Tailor Your CV:Make sure your CV highlights your experience with Python and cloud infrastructure. We want to see how you've tackled challenges similar to those we face, especially in scaling backend systems.
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Tell us why you're excited about working with a fast-growing Series A fintech company and how your background aligns with our mission-critical platform.
Showcase Relevant Experience:When detailing your past roles, focus on your experience in high-growth B2B SaaS environments. We’re particularly interested in how you’ve handled sensitive data and built scalable systems.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from our team!
How to prepare for a job interview at Oliver Bernard
✨Know Your Tech Inside Out
Make sure you’re well-versed in Python and AWS, as these are crucial for the role. Brush up on your knowledge of backend systems and be ready to discuss how you've scaled systems in previous roles, especially in high-growth environments.
✨Showcase Your Problem-Solving Skills
Prepare to tackle hypothetical scenarios related to scaling multi-tenant infrastructure or processing large volumes of sensitive data. Think through your approach to designing backend abstractions and be ready to explain your thought process clearly.
✨Demonstrate Ownership and Leadership
This role involves taking real ownership of core backend systems. Be prepared to share examples from your past where you led projects or initiatives, particularly in a fast-paced environment. Highlight your hands-on experience and how you’ve architected solutions.
✨Understand the Company’s Mission
Research the company’s product and its impact on the fintech landscape. Be ready to discuss how your skills align with their mission-critical needs and how you can contribute to evolving their platform from speed to scale.
