Staff Backend Engineer (London Area)

Staff Backend Engineer | AI-Powered SaaS | London (Hybrid)

We’re partnered with a top-ranked AI SaaS company backed by leading AI pioneers and a $30M+ Series A. Their platform is transforming no-code AI workflows and powering Fortune 500 enterprises worldwide.

The Role

As a Staff Backend Engineer, you'll play a critical role in scaling an AI-first platform, enabling foundation models like Gemini Pro to analyze multimodal data at scale. You'll work closely with the founders and engineering leadership to design robust, high-performance architectures that drive AI adoption at enterprise levels.

Responsibilities

• Architect and scale backend systems for multi-tenant AI applications.
• Maintain and expand highly performant APIs for internal and B2B clients.
• Build and optimize infrastructure using AWS, Terraform, and Docker.
• Ensure observability and efficient queue management.
• Ship to production multiple times a day, solving real-world user challenges.

Your Experience

• 5+ years of backend development experience with strong architectural skills.
• Experience with functional programming (Elixir, Scala, Go, Node.js, Haskell, etc.).
• Cloud infrastructure expertise (AWS, Terraform) with experience at scale.
• Deep understanding of distributed systems, orchestration, and observability.
• Knowledge of GenAI and prompt engineering is a plus.
• Passion for early-stage startups, small-team collaboration, and a customer-centric mindset.

Perks & Benefits

• Top 15% equity options plan
• Private healthcare & pension contribution
• 30 days holiday + bank holidays (plus 1 extra day per year of service)
• £800 L&D budget + conference sponsorship (NeurIPS, CVPR, etc.)
• Company-wide retreats & flexible hybrid working
• Work from anywhere for 1 month per year

If you’re a backend specialist who thrives in high-impact product focused environments, apply today!