Back End Engineer

Senior Back End Engineer

Location:

Remote-first (London-based office access, open to talent across the UK)

Salary: £65,000- £75,000

Type:
Full-time (4-day work week)

I’m working with an exciting client who is looking for a Senior Backend Engineer to join their innovative, mission-driven team. This is a unique opportunity to work on AI-powered software that supports frontline teams delivering essential citizen services.

The company is building an AI Operating System for Frontline Casework. Their voice-first, multi-agent platform helps frontline teams reduce admin, cut compliance risks, and spend more time on the human work that changes lives. They are backed by leading investors, have won multiple innovation awards, and are trusted by major service providers delivering government and local authority contracts.

The team is developing AI-powered software for frontline teams in areas such as employability, housing, wellbeing, and justice. The platform captures conversations via phone and chat, generates structured meeting notes, and provides real-time multilingual interpretation. Behind the scenes, they tackle complex challenges including AI agents, data pipelines, security, and high-reliability systems operating in sensitive real-world contexts.

The Senior Backend Engineer will design, build, and scale core systems, from APIs and data pipelines to integrations and infrastructure. You will take ownership of the backend as the product scales to a larger user base.

• Build and ship services across the AI-native platform
• Collaborate closely with CTO, design, and product teams to deliver tools used by real frontline workers
• Write clear, maintainable, tested, and secure code that scales
• Make technical decisions balancing speed and long-term stability
• Help shape architecture as the platform scales from early deployments to nationwide adoption

• 5+ years of professional engineering experience
• Proven track record building backend services/APIs for enterprise-grade applications
• Backend:
  Python/Flask, with async patterns as a plus
• Cloud:
  Hands-on with AWS or similar platforms
• Strong judgment for simplicity; know when to refactor vs. ship
• Collaborative mindset with experience in cross-functional teams
• Experience or curiosity with LLMs or AI systems
• Passion for building tech that improves lives

• Obsessed with customer value – placing the needs and experience of customers first
• Impact-driven – empowering end users to thrive
• Trust through actions – fostering collaboration and reliability
• Empowerment – hiring the best people and enabling them to excel
• Inclusive by design – valuing diversity of thought and inclusion

• Be part of something transformative – reshape frontline public services in the UK and beyond
• Huge growth opportunity – potential to expand into broader responsibilities internationally
• 4-day work week (paid for
  5)
• Remote-first with London office access and in-person collaboration
• A team that invests deeply in your growth and sets you up to succeed

You’ll be joining a small, mission-driven team backed by world-class partners, building something with real social impact. If you care about code quality and the humans it ultimately serves, this is the role for you.