Senior Mobile Engineer
CompanyRelay Technologies
Location
Greater London, England, United Kingdom
Employment TypeFull-time
Posted At4/20/2026
UK Visa Sponsorship Analytics
Analytics are greyed out due to low classification confidence (46.0%).
Occupation TypeVehicle technicians, mechanics and electricians
Occupation Code Skill LevelMedium Skilled
Sponsorship Salary Threshold
£41,700
(£21.38 per hour)
Standard minimum applies
Above analytics are generated algorithmically based on job titles and may not always be the same as the company's job classification. You can also check detailed occupation eligibility, and salary criteria on our UK Visa Eligible Occupations & Salary Thresholds page.
Disclaimer: Hunt UK Visa Sponsors aggregates job listings from publicly available sources, such as search engines, to assist with your job hunting. We do not claim affiliation with Relay Technologies. For the most up-to-date job details, please visit the official website by clicking "Apply Now."
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
- Cross-platform Flutter apps with a deep focus on user experience
- Python, Rust and TypeScript - we keep things simple but use the right tool for the job
- Cloud-native on GCP with extensive use of BigQuery and Cloud Run
- Work across the full stack of technology, from mobile all the way down through data infrastructure.
- Take end-to-end ownership over thorny real-world problems, like using machine vision to automatically assess proof of delivery photos.
- Collaborate with team members across the company.
- Regularly spend time in the field learning how the technology you build impacts our couriers and parcel recipients.
- Talent Acquisition Interview - 30 min
- Build a UI Component Interview - 1 hour
- Design and Mobile Fundamentals Interview + AI Programming (Build an APP) - 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.
- 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.