Senior Software Engineer
CompanyRelay Technologies
Location
Greater London, England, United Kingdom
Employment TypeFull-time
Posted At4/20/2026
UK Visa Sponsorship Analytics
Occupation TypeProgrammers and software development professionals
Occupation Code Skill LevelHigher Skilled
Sponsorship Salary Threshold
£54,700
(£28.05 per hour)
Occupation rate applies
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Description
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
Diego Protas – Director of 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
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
Diego Protas – Director of 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
As a Software Engineer At Relay, You'll
- Own challenging, impactful problems end-to-end, from routing algorithms to real-time optimisation services and intuitive operational tools.
- Collaborate closely with top engineers, data scientists, and product leaders in a highly autonomous and impact-driven environment.
- Regularly ship production-quality code weekly—and often daily—seeing your work directly impact Relay’s growth.
- Create incredible product experiences powering the fastest-growing e-commerce platforms, including Vinted, TikTok, and Temu, impacting millions of users worldwide.
- Talent Acquisition Interview - 30 min
- API Integration Interview - 1 hour
- Technical Interview - 2 hours
- Operating Principles & Impact - 1 hour
- Decision and offer within 48 hours; our process mirrors our pace of work, typically completed in a week.
- Generous equity, richer than 99% of European startups, with annual top-ups to share Relay’s success.
- Private health & dental coverage, so comprehensive you’d need to be a partner at a Magic Circle law firm to match it.
- 25 days of holidays
- Enhanced parental leave.
- Located in Shoreditch, our office set-up enables the kind of in-person interactions that drive impact. We work 4 days on-site, with 1 day remote.
- Hardware of your choice.
- Extensive perks (gym subsidies, cycle-to-work, Friday office lunch, covered Uber home and dinner for late nights, and more).
- Aim with Precision: You define problems clearly and measure your impact meticulously.
Relay is an equal-opportunity employer committed to diversity, inclusion, and fostering a workplace where everyone thrives.