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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: Collaborate with a multinational team and grow your skills in a supportive culture.
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 Woking 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 Woking
✨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. Practising these will help you feel confident and ready to impress!
✨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 and contributing to our mission.
We think you need these skills to ace Senior Backend Developer (.NET | AI-First SaaS Platform) in Woking
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experiences that align with what we're looking for. Highlight your backend development experience, especially with .NET, and any work you've done with AI or SaaS platforms.
Craft a Compelling Cover Letter: Use your cover letter to tell us why you're passionate about this role and how your background makes you a great fit. Share specific examples of projects where you've demonstrated ownership and quality in your work.
Showcase Your Technical Skills: In your application, don't forget to mention your experience with API design, distributed systems, and any relevant tools like Azure. We want to see how you can contribute to our AI-first environment!
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 us you're keen on joining our team!
How to prepare for a job interview at Keepnet
✨Know Your Tech Stack Inside Out
Make sure you’re well-versed in .NET and the principles of Clean Architecture, DDD, and TDD. Brush up on your knowledge of SQL and NoSQL databases, especially PostgreSQL, as well as cloud environments like Azure. Being able to discuss these topics confidently will show that you’re ready to hit the ground running.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific examples where you've designed and built scalable backend services or APIs. Think about challenges you faced and how you overcame them, particularly in production environments. This will demonstrate your ownership mindset and ability to make pragmatic technical decisions.
✨Understand the Company’s Mission
Familiarise yourself with Keepnet's focus on human cyber risk management and their AI-first approach. Be ready to explain how your skills can contribute to their goals and how you can help improve their systems. Showing genuine interest in their mission will set you apart from other candidates.
✨Prepare for Collaborative Discussions
Since collaboration is key at Keepnet, think about how you’ve worked with frontend teams or customer-facing roles in the past. Be prepared to discuss how you approach teamwork and iteration in an Agile environment. Highlighting your communication skills will be crucial in demonstrating your fit for their team culture.
