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For Companies At a Glance
- Tasks: Design and build scalable backend systems for modern financial products.
- Company: Join a leading fintech company in London with a dynamic engineering team.
- Benefits: Competitive salary, flexible work schedule, and opportunities for professional growth.
- Why this job: Make a real impact in the fintech space while solving complex technical challenges.
- Qualifications: 5+ years of Java/Kotlin experience and strong AWS skills required.
- Other info: Collaborative environment with excellent career advancement opportunities.
The predicted salary is between 48000 - 72000 £ per year.
We are seeking a Senior Java / Kotlin Engineer to join our London-based fintech engineering team. You will be responsible for designing and building highly scalable, secure, and resilient backend systems that power modern financial products used by thousands of customers. This role is ideal for an engineer with strong JVM experience who thrives in high-throughput, regulated environments and enjoys solving complex technical challenges.
Key Responsibilities
- Design, develop, and maintain high-performance backend services using Java and/or Kotlin.
- Extensive experience with AWS.
- Build and evolve microservices-based architectures for financial platforms.
- Develop and maintain RESTful APIs and event-driven services.
- Ensure systems meet security, reliability, and compliance requirements.
- Collaborate closely with product, frontend, DevOps, and QA teams.
- Improve system performance, scalability, and fault tolerance.
- Write clean, well-tested, and maintainable code.
- Participate in architecture discussions, code reviews, and mentoring.
- Support production systems and contribute to incident resolution.
Required Skills & Experience
- 5+ years of commercial experience with Java (Spring/Spring Boot) and/or Kotlin.
- Strong knowledge of JVM internals, concurrency, and performance tuning.
- Strong experience with AWS.
- Experience building microservices and distributed systems.
- Solid understanding of REST APIs and backend integration patterns.
- Experience with relational databases (PostgreSQL, MySQL, or Oracle).
- Familiarity with message queues/streaming platforms (Kafka, RabbitMQ, etc.).
- Strong understanding of security best practices and secure API design.
- Experience working with Git and modern CI/CD pipelines.
- Comfortable working in Linux-based environments.
Nice to Have
- Experience in fintech, banking, payments, or capital markets.
- Exposure to event-driven architectures.
- Experience with Docker and Kubernetes.
- Cloud experience (AWS preferred).
- Knowledge of financial regulations (PCI-DSS, PSD2, FCA, GDPR).
- Experience with monitoring tools (Prometheus, Grafana, Datadog).
Seniority level: Mid-Senior level
Employment type: Full-time
Job function: Information Technology
Senior Java/Kotlin Engineers - Fintech in London employer: Oliver Bernard
Contact Detail:
Oliver Bernard Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Java/Kotlin Engineers - Fintech in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the fintech space and let them know you're on the lookout for opportunities. Attend meetups or tech events where you can chat with industry folks and get your name out there.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best Java/Kotlin projects, especially those related to fintech. This will give potential employers a taste of what you can do and set you apart from the crowd.
✨Tip Number 3
Prepare for technical interviews by brushing up on your coding skills and system design knowledge. Practice common algorithms and data structures, and be ready to discuss your past projects and how you've tackled challenges in high-throughput environments.
✨Tip Number 4
Don't forget to apply through our website! We love seeing candidates who are genuinely interested in joining our team. Plus, it gives you a better chance of getting noticed by our hiring managers.
We think you need these skills to ace Senior Java/Kotlin Engineers - Fintech in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with Java and Kotlin, especially in fintech. We want to see how your skills align with our needs, so don’t be shy about showcasing relevant projects!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Tell us why you’re passionate about fintech and how your background makes you the perfect fit for our team. Keep it engaging and personal – we love to see your personality!
Showcase Your Technical Skills: When applying, be sure to mention specific technologies you’ve worked with, like AWS or microservices. We’re looking for engineers who can hit the ground running, so let us know what you bring to the table!
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 brush up on your Java and Kotlin skills, especially around Spring and Spring Boot. Be ready to discuss your experience with AWS and microservices, as these are crucial for the role. Prepare to explain how you've tackled performance tuning and concurrency issues in past projects.
✨Showcase Your Problem-Solving Skills
Be prepared to share specific examples of complex technical challenges you've faced and how you solved them. This could involve discussing your approach to building scalable systems or improving system performance. Use the STAR method (Situation, Task, Action, Result) to structure your answers.
✨Understand the Fintech Landscape
Familiarise yourself with the latest trends and regulations in fintech, such as PCI-DSS and GDPR. Being able to discuss how these impact backend development will show that you're not just a techie but also understand the business context of your work.
✨Collaborate and Communicate
Since this role involves working closely with product, frontend, DevOps, and QA teams, be ready to talk about your collaboration experiences. Highlight any instances where you’ve mentored others or contributed to architecture discussions, as teamwork is key in this environment.
