Senior Backend Engineer

Sofia, Bulgaria

About the Position

The Mobile Fulfilment Systems department at Ocado is at the forefront of developing cutting-edge automation solutions for both in-store and warehouse online order fulfilment. We leverage distributed backend systems, intuitive mobile applications, and advanced autonomous mobile robots to enable fast, scalable, and cost-effective order collection.

Within this department, the Chuck Norris team is dedicated to building the software systems powering our Mobile Robotics products. Our scope spans mobile apps, backend microservices, workflow orchestration, integration APIs, and cloud-native components. All these drive the success of our flagship Chuck Autonomous Mobile Robot.

This role is central to shaping the architecture, scalability, and reliability of Ocado's cloud-based backend systems for mobile robotics. Your contributions will directly influence the efficiency and intelligence of our autonomous robot fleet in real-world operations.

Responsibilities

• Design and develop scalable backend systems
• Integrate AI and agentic AI tools into software
• Build and operate cloud-native, distributed services
• Collaborate with cross-functional teams to ensure system reliability and efficiency
• Drive the development of agentic workflows and shared practices

Requirements

• Technically senior, with deep command of at least one backend language (TypeScript, Go, Java, C++, Python, or similar)
• Strong instinct for system design: ability to read an unfamiliar architecture, find where it breaks under load, and reason about trade-offs
• Genuine ownership across greenfield and brownfield work - drive things to completion, favour the simplest thing that delivers the value, and be comfortable supporting what you build
• Hands-on experience integrating LLMs into real software, with a working command of feedback loops, guardrails, and validation as the path to quality

Nice to Have

• Familiarity with our environment (Kubernetes, GCP/AWS, Pub/Sub, PostgreSQL) and the modern AI stack - RAG and vector databases, orchestration frameworks (LangGraph, LangChain, LlamaIndex, Strands SDK, n8n), and the MCP / A2A / CLI agent landscape

We Offer

• Hybrid office attendance policy that sees you onsite 60%/40% of your time
• 30 days of “Work from anywhere” program
• 25 days of annual leave
• 100 EUR monthly for food vouchers
• 50 EUR social allowance paid with your monthly salary
• Enhanced maternity and paternity leave policy
• Medical plan including health & dental coverage
• Life and disability insurance
• Employee assistance program
• Partial Multisport Card Coverage

We also have regular divisional socials, sports clubs, and the Ocado Technology Academy for a packed schedule of courses, conferences, and events.

About the Company

If you think you have what it takes to make a difference, please submit your application below.

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