Senior Software Engineer

Full Time Senior Senior Software Engineer in healthcare at Relay Technologies in London - Hybrid. Apply directly through the link below.

At a glance:

• Work mode:
  Remote
• Employment:
  Full Time
• Location:
  
  London - Hybrid
• Experience:
  
  Senior

Core stack: Talent Acquisition, Computer Science, Infrastructure, Architecture, Distributed, Type Script, Leadership, Logistics, Big Query, Feedback, Flutter, Python, Parcel, Remote, Rust, GCP, API, LLM, ML

Is this Senior Software Engineer job remote? Yes, this position is fully remote (London - Hybrid).

What skills are required? Talent Acquisition, Computer Science, Infrastructure, Architecture, Distributed, Type Script, Leadership, Logistics, Big Query, Feedback, and more.

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.

• ~90 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, 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  Relay, Diego’s infectious enthusiasm and hands‑on leadership are redefining the boundaries of speed and reliability.

• Python, Rust and Type Script - 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 Big Query 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 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, Tik Tok, and Temu, impacting millions of users worldwide.

• 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.
• Pl…