Graduate Software Engineer

Relay - London - Hybrid - Global - Procurement & Supply Chain

Relay is fundamentally reshaping how goods move in an online era. Backed by Europe’s largest-ever logistics Series A ($35M), led by deep-tech investors Plural (whose portfolio spans fusion energy and space exploration), Relay is scaling faster than 99.98% of venture-backed startups. We're assembling the most talent-dense team the logistics industry has ever seen

Relay’s Mission is to free commerce from friction. Today, high delivery costs act as a hidden tax on e-commerce, quietly shaping what can be sold online and limiting who can participate. We envision a world where more goods move more freely between more people, making the online shopping experience seamless and accessible to everyone.

THE TEAM
• ~110 people, more than half in engineering, product and data
• 45+ advanced degrees across computer science, mathematics and operations research
• Thousands of data points captured, calculated, analysed and predicted for every single parcel we handle
• An intellectually vibrant culture of first‑principles thinking, tight feedback loops and relentless experimentation

Work Alongside Industry Leaders

Diego Protas – Director of Platform Engineering

Diego, an expert in distributed systems and hardware architecture, merging physical computing with enterprise-scale infrastructure. Previously directing teams of 170+ engineers at Mercado Libre and orchestrating large-scale ML-based inference at Meta. At Relay, Diego’s infectious enthusiasm and hands-on leadership are redefining the boundaries of speed and reliability.

Tech Stack Highlights

  • Python, Rust and TypeScript - we keep things simple but use the right tool for the job

  • Cross-platform Flutter apps with a deep focus on user experience

  • Cloud-native on GCP with extensive use of BigQuery and Cloud Run

  • Extensive use of ML modelling and LLM inference - no gimmicks here, this is our daily routine

  • Emerging tech integrations, including robotics and IoT-powered operations

The Opportunity

As a Graduate Software Engineer at Relay, you will: