Senior Software Engineer – AI / Agentic Systems, London

Senior Software Engineer – AI / Agentic Systems

London (Hybrid)

We’re partnering with a cutting-edge AI startup redefining how intelligent systems operate at scale. Their mission is ambitious: to push the boundaries of agentic AI and build platforms that automate complex, multi-step human workflows—unlocking entirely new levels of productivity.

This is an opportunity to join early, work alongside world-class AI talent, and directly shape a platform sitting at the intersection of research and real-world deployment.

The Opportunity

As a Senior Software Engineer, you’ll play a key role in building and scaling an enterprise-grade AI platform. You’ll operate at the core of the product engineering function—designing systems that power autonomous agents, orchestrate workflows, and enable observability at scale.

This is not just another backend role. You’ll influence architecture, mentor engineers, and help define the technical direction of a rapidly growing AI company.

What You’ll Be Doing

• Own and drive system architecture and long-term technical strategy
• Build high-performance, scalable backend systems powering AI-driven workflows
• Lead design and code reviews, ensuring high standards of quality and security
• Collaborate closely with AI research, product, and infrastructure teams
• Improve system reliability, observability, and scalability
• Mentor engineers and act as a technical multiplier across teams
• Champion best practices, tooling, and engineering excellence
• Proactively identify and resolve technical debt

What they are Looking For

Core Experience

• 5+ years in backend engineering, ideally at Senior level
• Strong experience with Python and/or Golang
• Proven track record building and scaling distributed systems or cloud-native platforms (AWS preferred)
• Experience delivering end-to-end solutions in production environments

Technical Skills

• API development (REST / GraphQL) and third-party integrations
• Strong knowledge of databases (SQL & NoSQL)
• Experience with event-driven systems / messaging (Kafka, RabbitMQ, SQS, etc.)
• Solid understanding of system design, architecture patterns, and testing frameworks
• Hands-on experience with monitoring, observability, and instrumentation

Leadership & Impact

• Strong mentoring capability—raising the bar across teams
• Ability to communicate across technical and business stakeholders
• Confident leading complex technical decisions with long-term vision

Working Model

• Hybrid: 3 days per week onsite (London)
• Occasional travel between offices (every 4–6 weeks)

Why This Role?

• Join one of the most exciting AI startups in Europe
• Work on agentic AI systems at real scale—not just theory
• Collaborate with top-tier engineers and researchers
• Significant ownership and influence from day one
• Strong compensation + rapid career growth opportunities