Graduate Software Engineer
London – Hybrid Full-time
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
As a Graduate Software Engineer At Relay, You Will
- Define and implement the core concepts of our API.
- Build the first versions of our courier‑facing software to guide the delivery of thousands of parcels every day.
- Help stand up our data infrastructure stack, the basis of our routing, topology management, and other core operations research tasks.
- Regularly spend time in the field learning how the technology you build impacts our couriers and parcel recipients.
You Might Be a Great Fit If…
- You are a final year university student with initial engineering experience through internships and academic projects.
- You’re excited to take on any engineering challenge from cloud infrastructure to frontend development. Curiosity and willingness to learn matter more than past exposure.
- You have high agency and pride of ownership in your work, taking initiative to drive impact.
- You demonstrate empathy for the humans you build for, seeking feedback from customers, partners, and colleagues.
- You are eager to learn new technologies and problem domains.
- You value clear communication, active listening, and intentional collaboration.
We Are Looking for Candidates Who…
- Are ready to join us in Summer 2026 and able to work in our London office 4 days a week.
- Have worked on high‑performing teams building software.
- Have broad experience across a variety of technology stacks.
Fast and Focused Hiring Process
- Talent Acquisition Interview – 30 min
- Programming Interview – 1 hour
- API Integration Interview – 1 hour
- Operating Principles & Impact – 1 hour
- Decision and offer within 48 hours; our process mirrors our pace of work, typically completed in a week.
Who Thrives at Relay?
- Aim with Precision: You define problems clearly and measure your impact meticulously.
- Play to Win: You chase bold bets, tackle the hard stuff, and view constraints as fuel, not friction.
- 1% Better Every Day: You believe that small, consistent improvements lead to exponential growth. You move quickly, deliver results, and learn from every experience.
- All In, All the Time: You show up and step up. You take ownership from start to finish and do what it takes to deliver when it counts.
- People-Powered Greatness: You invest in your teammates. You give and receive feedback with care and candour. You build trust through high standards and shared success.
- Grow the Whole Pie: You seek out win‑win solutions for merchants, couriers, and our customers, because when they thrive, so do we.
Relay is an equal‑opportunity employer committed to diversity, inclusion, and fostering a workplace where everyone thrives.
Posted by Relay on their own careers page — no recruiter in between.
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