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- Tasks: Design and build scalable backend services for an AI-driven SaaS platform.
- Company: Join Keepnet, a rapidly growing tech company focused on human cyber risk management.
- Benefits: Enjoy competitive pay, hybrid work, 25 days annual leave, and health perks.
- Why this job: Make a real impact in a multinational team using cutting-edge AI technology.
- Qualifications: 8+ years of .NET experience and strong API design skills required.
- Other info: Collaborative culture with opportunities for continuous learning and career growth.
The predicted salary is between 36000 - 60000 £ per year.
Compensation: Competitive, based on location and experience
Location: UK or Turkey (Hybrid – Office & Remote)
Keepnet is an AI-driven SaaS platform experiencing strong, sustained growth in the UK with growing global momentum, helping organisations manage human cyber risk at scale. With Agentic AI live in production, Keepnet runs autonomous systems that plan, build, and operate security awareness and human risk workflows, supported by strong guardrails and observability.
We’re looking for a Senior Backend Developer who wants to build production-grade backend services that power these systems, working in a multinational, AI-first engineering team where quality, ownership, and long-term thinking matter.
What You’ll Do
- Design, build, and maintain scalable backend services for Keepnet’s Human Risk Management platform.
- Build clean, modular APIs that integrate internal services and third-party systems to enable automation, reporting, and security workflows.
- Develop testable, maintainable codebases using principles such as Clean Architecture, DDD, and TDD.
- Own the full development lifecycle: design, implementation, CI/CD (Azure), and post-release monitoring.
- Work on distributed and asynchronous systems using message queues, background workers, and event-driven workflows.
- Use observability signals (logging, metrics, tracing, tools like Sentry) to proactively detect, diagnose, and prevent production issues.
- Collaborate closely with frontend, product, and customer-facing teams to deliver features that solve real customer problems.
- Participate in Agile ways of working, focused on iteration, ownership, and continuous improvement.
What We’re Looking For
- 8+ years of experience building backend systems with .NET.
- Strong understanding of API design, distributed systems, and asynchronous architectures.
- Experience with SQL and NoSQL databases (PostgreSQL preferred), caching, and queuing systems.
- Familiarity with cloud environments and DevOps practices (Azure preferred).
- Comfort working on production SaaS platforms, with ownership beyond deployment.
- Experience using AI-assisted development tools (e.g. Cursor or similar) to support code exploration, refactoring, testing, or design discussions—while maintaining strong engineering judgment.
- A strong sense of ownership and production accountability, including monitoring, debugging, and continuous improvement.
- Ability to understand product and business context, making pragmatic technical decisions that balance user value, risk, and long-term goals.
- A security-conscious mindset, building systems that are secure by design.
Life at Keepnet
At Keepnet, engineering is about craft, collaboration, and impact. What you can expect:
- Hybrid Working: A balance of in-office collaboration and remote focus time.
- Thoughtful Engineering: Time and space to design systems properly, not just ship quickly.
- Global Context: Work on a multinational SaaS platform used across multiple regions.
- AI-First Environment: AI-assisted development and production-grade AI systems are part of everyday work.
- Annual Leave: 25 days (+1 per year of service).
- Health & Well-being: Gym support and cycle-to-work scheme.
- Team Culture: Monthly team lunches and quarterly offsites.
- Continuous Learning: Learn from experienced peers and grow your skills over time.
Why This Role Is Different
This role is for engineers who:
- Care about system design and long-term maintainability.
- Enjoy working with experienced peers who challenge each other constructively.
- Prefer preventing incidents over reacting to them.
- Want to build software used by real customers at real scale.
- Believe good engineering is as much about ownership and judgment as it is about code.
If that sounds like you, we’d love to talk.
Senior Backend Developer (.NET | AI-First SaaS Platform) in London employer: Keepnet
Contact Detail:
Keepnet Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Backend Developer (.NET | AI-First SaaS Platform) in London
✨Tip Number 1
Network like a pro! Reach out to your connections on LinkedIn or attend local tech meetups. You never know who might have the inside scoop on job openings or can refer you directly to hiring managers.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best projects, especially those that highlight your experience with .NET and AI-driven solutions. This gives potential employers a taste of what you can bring to the table.
✨Tip Number 3
Prepare for interviews by practising common technical questions and coding challenges. Use platforms like LeetCode or HackerRank to sharpen your skills. Remember, confidence is key, so be ready to discuss your past experiences and how they relate to the role.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you're genuinely interested in joining our team at Keepnet, where we value quality and ownership in our engineering culture.
We think you need these skills to ace Senior Backend Developer (.NET | AI-First SaaS Platform) in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experiences that align with the Senior Backend Developer role. Highlight your .NET experience and any work with AI-driven systems to catch our eye!
Craft a Compelling Cover Letter: Use your cover letter to tell us why you're passionate about building scalable backend services. Share specific examples of your past projects that demonstrate your ownership and problem-solving skills.
Showcase Your Technical Skills: Don’t forget to mention your familiarity with SQL, NoSQL databases, and cloud environments like Azure. We love seeing how you’ve applied these in real-world scenarios, so be specific!
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 this exciting opportunity at Keepnet!
How to prepare for a job interview at Keepnet
✨Know Your Tech Inside Out
Make sure you brush up on your .NET skills and understand the principles of Clean Architecture, DDD, and TDD. Be ready to discuss how you've applied these in past projects, as well as your experience with SQL and NoSQL databases.
✨Showcase Your Problem-Solving Skills
Prepare examples of how you've tackled complex backend challenges, especially in distributed systems and asynchronous architectures. Highlight any experience with message queues and event-driven workflows to demonstrate your ability to build scalable solutions.
✨Emphasise Collaboration
Since this role involves working closely with frontend and product teams, be ready to share experiences where you collaborated effectively. Discuss how you’ve contributed to Agile processes and how you value feedback from peers to improve your work.
✨Demonstrate a Security Mindset
Given the focus on building secure systems, come prepared to talk about how you've integrated security into your development process. Share specific examples of how you've monitored and improved production systems to prevent issues before they arise.
