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- Tasks: Join us as a backend engineer to build a cutting-edge payments platform from scratch.
- Company: We're an innovative fintech startup transforming global payment systems with no legacy constraints.
- Benefits: Enjoy competitive salary, high-equity package, and flexible remote work options.
- Why this job: Be a key player in reshaping financial infrastructure while using modern tools and AI for impactful results.
- Qualifications: 3+ years in backend development with C#/.NET; experience in cloud-native infrastructure and fintech preferred.
- Other info: Work in-person in London with some flexibility, contributing to a generational fintech company.
The predicted salary is between 43200 - 72000 £ per year.
We are an early-stage fintech startup re-wiring the global payments infrastructure. We’re backed by industry insiders, with deep experience in the financial ecosystem. We’re building from zero—no tech debt, no legacy systems. Now we’re looking for a founding backend engineer to join us at the ground level and help bring this platform to life.
This is a hands-on, high-impact role: you'll write code daily, influence key architectural decisions, and ship fast using modern tools and AI.
- Build a modern backend from scratch in C#/.NET 8 with a clean, event-driven architecture.
- Help architect a scalable system using CQRS, Event Sourcing, DDD, microservices.
- Own key components in AWS: Lambda, SQS, SNS, DynamoDB, PostgreSQL, API Gateway.
You ship clean code, scalable systems, and solve complex problems elegantly. You use AI tools to design, code, debug, and ship faster, not just as a nice-to-have but a MUST-have force multiplier.
Requirements:
- 3+ years experience building backend systems and APIs in C#/.NET.
- Experience writing clean, testable code with a TDD mindset.
- Comfort with cloud-native infrastructure (preferably AWS).
- Background in payments, fintech, or secure data platforms.
- Experience building B2B platforms or financial APIs.
You won’t be a cog—you’ll be a core part of the company’s foundation. Help reinvent a critical piece of global financial infrastructure. Generous options in what we believe can be a generational fintech company.
You’re looking for a comfy job with a 40 hour a week commitment with predictable hours and minimal pressure. You don't see the value in using AI to enhance engineering teams.
Location: In-person in London 5 days a week with some flexibility (e.g. remote Fridays).
Compensation: Competitive salary + high-equity package.
Backend Software Engineer (m/w) employer: Stealth Startup
Contact Detail:
Stealth Startup Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Backend Software Engineer (m/w)
✨Tip Number 1
Familiarise yourself with the latest trends in fintech and payments. Understanding the current landscape will not only help you during interviews but also show your genuine interest in the industry.
✨Tip Number 2
Brush up on your C#/.NET skills, especially focusing on event-driven architecture and microservices. Being able to discuss your experience with these technologies confidently can set you apart from other candidates.
✨Tip Number 3
Prepare to discuss your experience with cloud-native infrastructure, particularly AWS services like Lambda and DynamoDB. Having real-world examples of how you've used these tools will demonstrate your hands-on expertise.
✨Tip Number 4
Showcase your problem-solving skills by preparing examples of complex issues you've tackled in previous roles. This will highlight your ability to write clean, scalable code and your approach to software design.
We think you need these skills to ace Backend Software Engineer (m/w)
Some tips for your application 🫡
Understand the Role: Before applying, make sure you fully understand the responsibilities and requirements of the Backend Software Engineer position. Familiarise yourself with terms like CQRS, Event Sourcing, and DDD, as well as the technologies mentioned such as C#/.NET and AWS.
Tailor Your CV: Highlight your relevant experience in backend development, particularly with C#/.NET and cloud-native infrastructure. Emphasise any projects where you've built scalable systems or worked with financial APIs to demonstrate your fit for the role.
Craft a Compelling Cover Letter: Use your cover letter to express your passion for fintech and how your skills align with the company's mission. Mention specific experiences that showcase your ability to write clean, testable code and your comfort with modern tools and AI.
Showcase Problem-Solving Skills: In your application, provide examples of complex problems you've solved in previous roles. This could include challenges faced while building backend systems or optimising performance, which will resonate with the startup's focus on innovation and efficiency.
How to prepare for a job interview at Stealth Startup
✨Showcase Your Technical Skills
Be prepared to discuss your experience with C#/.NET and how you've built backend systems in the past. Highlight specific projects where you implemented clean, testable code and used TDD principles.
✨Demonstrate Your Understanding of Modern Architectures
Familiarise yourself with concepts like CQRS, Event Sourcing, and microservices. Be ready to explain how you would apply these principles in building a scalable system for a fintech startup.
✨Discuss Your Experience with Cloud Infrastructure
Since the role involves working with AWS components, be sure to talk about your hands-on experience with services like Lambda, SQS, and DynamoDB. Share examples of how you've leveraged cloud-native infrastructure in previous roles.
✨Emphasise Your Problem-Solving Abilities
Prepare to discuss complex problems you've solved in your previous roles, especially in the context of payments or fintech. Show how you approach challenges and use AI tools to enhance your coding and debugging processes.
