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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 hybrid working, competitive salary, 25 days annual leave, and health support.
- Why this job: Make a real impact in an AI-first environment with a focus on quality and collaboration.
- 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 Maidstone 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 Maidstone
✨Tip Number 1
Network like a pro! Reach out to your connections on LinkedIn or at meetups. Let them know you're on the lookout for a Senior Backend Developer role. You never know who might have the inside scoop on an opening at Keepnet or elsewhere.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repository showcasing your best projects, especially those involving .NET and AI. 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 common backend development questions and scenarios. Think about how you would design scalable systems or tackle production issues. Practice makes perfect, and we want you to shine!
✨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, it shows you’re genuinely interested in joining the Keepnet team.
We think you need these skills to ace Senior Backend Developer (.NET | AI-First SaaS Platform) in Maidstone
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experiences that match the Senior Backend Developer role. Highlight your .NET experience, API design skills, 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 and how they relate to what we do at Keepnet.
Showcase Your Problem-Solving Skills: In your application, mention instances where you've tackled complex challenges in backend development. We love seeing how you approach problems and come up with innovative solutions!
Apply Through Our Website: We encourage you to apply directly through our website for the best chance of getting noticed. It helps us keep track of applications and ensures you’re considered for the role!
How to prepare for a job interview at Keepnet
✨Know Your Tech Inside Out
Make sure you brush up on your .NET skills and be ready to discuss your experience with backend systems. Be prepared to dive deep into API design, distributed systems, and asynchronous architectures. They’ll want to see that you can not only talk the talk but also walk the walk!
✨Showcase Your Problem-Solving Skills
Prepare examples of how you've tackled complex issues in previous roles. Think about times when you’ve used observability signals or worked with CI/CD processes. This is your chance to demonstrate your ownership mindset and how you proactively prevent production issues.
✨Understand Their Business Context
Familiarise yourself with Keepnet’s mission and the challenges they face in human cyber risk management. Being able to connect your technical decisions to their business goals will show that you’re not just a coder, but someone who understands the bigger picture.
✨Embrace the AI-First Approach
Since Keepnet is an AI-driven platform, be ready to discuss any experience you have with AI-assisted development tools. Highlight how you’ve integrated these tools into your workflow while maintaining strong engineering judgement. This will show that you’re aligned with their innovative culture.
