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For Companies At a Glance
- Tasks: Design and optimise scalable backend services for innovative fintech solutions.
- Company: Fast-growing fintech scaleup backed by top investors, revolutionising billing and revenue recognition.
- Benefits: Competitive salary, equity options, flexible hybrid work, and rapid career progression.
- Why this job: Join a dynamic team and make a real impact in the fintech industry.
- Qualifications: 3+ years of backend engineering experience and strong Kotlin skills.
- Other info: Work in a supportive culture with opportunities for technical leadership.
The predicted salary is between 104000 - 156000 £ per year.
Location: London (Hybrid)
Salary: Up to £130k + competitive equity
Industry: Fintech, SaaS, B2B
What You'll Drive
Join a fast-growing fintech scaleup revolutionising billing, CPQ, and revenue recognition for the world's leading SaaS, AI, and fintech companies. Backed by a16z, Salesforce Ventures, and top global fintech investors, over $21M has been raised to date, fueling new product development, team growth, and international expansion. With hundreds of clients and over $500M in revenue processed, you'll build mission-critical financial tools, architect core backend systems, and help shape both product and engineering culture at a pivotal moment of growth.
What You'll Focus On
- Design, build, and optimise scalable backend services using Kotlin for complex billing and revenue automation workflows
- Collaborate with product, data, and design teams to deliver seamless, user-friendly financial tooling
- Architect robust APIs and data models with best practices for high performance and reliability
- Drive backend technical direction and mentor engineering peers
- Contribute to building a strong engineering culture and operational excellence in a high-growth startup environment
Who You Are
- 3+ years of backend or full-stack engineering experience building product-focused applications
- Strong proficiency in Kotlin or equivalent JVM languages
- Proven experience designing scalable, reliable backend systems in SaaS or fintech settings
- Comfortable working in a hybrid environment with regular presence in London
- Autonomous, collaborative, and passionate about solving complex infrastructure challenges
- Experienced in fast-paced, user-centric startup or scaleup environments
Tech Stack
Kotlin
Why You'll Thrive Here
- Explosive growth: 600%+ YoY revenue increase, multimillion-dollar funding, and global customer reach
- High ownership: Shape product and engineering strategy with immediate impact
- Experienced team: Engineers and leaders from top-tier fintech and SaaS companies
- Product and user focus: Build automation and financial tools that transform how leading companies operate
- Flexible and inclusive culture: Results-driven, hybrid work, direct leadership access
- Fast career progression: Opportunities for technical leadership and broad ownership
- Security and compliance: Work in SOC 2 and ISO 27001 certified environments, gaining deep domain expertise
This role is open to UK citizens only.
Senior Backend Engineer - FinTech in London employer: Open Select
Contact Detail:
Open Select Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Backend Engineer - FinTech in London
✨Tip Number 1
Network like a pro! Reach out to folks in the fintech space, especially those who work at companies you're interested in. A friendly chat can open doors and give you insider info that could help you stand out.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repo showcasing your best projects, especially those using Kotlin. 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 practising common technical questions and coding challenges. We recommend doing mock interviews with friends or using online platforms to get comfortable with the format.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive about their job search!
We think you need these skills to ace Senior Backend Engineer - FinTech in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Senior Backend Engineer role. Highlight your experience with Kotlin and any relevant projects in fintech or SaaS. We want to see how your skills align with what we’re looking for!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Share your passion for backend engineering and why you’re excited about joining our team at StudySmarter. Let us know how you can contribute to our mission of revolutionising financial tools.
Showcase Your Projects: If you’ve worked on any interesting projects, especially those involving scalable backend systems, make sure to mention them. We love seeing real-world applications of your skills, so don’t hold back!
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’re considered for the role. Plus, it shows you’re keen to join our awesome team!
How to prepare for a job interview at Open Select
✨Know Your Tech Stack
Make sure you’re well-versed in Kotlin and any other JVM languages mentioned in the job description. Brush up on your knowledge of scalable backend systems, especially in SaaS or fintech environments. Being able to discuss specific projects where you've used these technologies will really impress the interviewers.
✨Showcase Your Problem-Solving Skills
Prepare examples of complex infrastructure challenges you've tackled in the past. Be ready to explain your thought process and the impact of your solutions. This will demonstrate your ability to think critically and contribute to the engineering culture they’re building.
✨Understand the Company’s Mission
Research the company’s products and their impact on the fintech landscape. Knowing how they revolutionise billing and revenue recognition will help you align your answers with their goals. It shows that you’re genuinely interested in the role and the company’s mission.
✨Be Ready for Collaboration Questions
Since the role involves working closely with product, data, and design teams, prepare to discuss your experience in collaborative environments. Think of examples where you’ve successfully worked in a team to deliver user-friendly financial tools, as this will highlight your teamwork skills.
