{"id":2640194,"url":"https://alion.io/job/relay-technologies-limited-senior-software-engineer","title":"Senior Software Engineer","company":{"id":3799710,"name":"Relay Technologies Limited","domain":"relaytech.co","url":"https://alion.io/company/relaytech","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"C","score":69,"open_postings":27,"ghost_share":0.519,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":89000,"max_usd":170000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":125},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"BigQuery","optional":true},{"name":"GCP","optional":true},{"name":"Google BigQuery","optional":true},{"name":"Google Cloud Run","optional":true},{"name":"LLM","optional":true},{"name":"Python","optional":true},{"name":"Rust","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-08-28T14:02:59Z","employer_posted_date":"2026-08-28","last_verified_at":"2026-10-18T08:24:34Z","board_verified":true,"closed_at":null,"days_open":50,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":50},"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, and a recently closed Series B ($95M), Relay is scaling faster than 99% of venture-backed startups. We're assembling the most talent-dense team the logistics industry has ever seen\nRelay’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.\nTHE TEAM\n\n~160 people, around half in engineering, product and data\n45+ advanced degrees across computer science, mathematics and operations research\nThousands of data points captured, calculated, analysed and predicted for every single parcel we handle\nAn intellectually vibrant culture of first-principles thinking, tight feedback loops and relentless experimentation\nWork Alongside Industry Leaders\nDiego Protas - Director of Engineering\nDiego, 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.\nTech Stack Highlights\nPython, Rust and TypeScript - we keep things simple but use the right tool for the job\n\nCross-platform Flutter apps with a deep focus on user experience\n\nCloud-native on GCP with extensive use of BigQuery and Cloud Run\n\nExtensive use of ML modelling and LLM inference - no gimmicks here, this is our daily routine\n\nEmerging tech integrations, including robotics and IoT-powered operations\n\nThe Opportunity\nAs a Software Engineer at Relay, you'll:\nOwn challenging, impactful problems end-to-end, from routing algorithms to real-time optimisation services and intuitive operational tools.\n\nCollaborate closely with top engineers, data scientists, and product leaders in a highly autonomous and impact-driven environment.\n\nRegularly ship production-quality code weekly-and often daily-seeing your work directly impact Relay’s growth.\n\nCreate incredible product experiences powering the fastest-growing e-commerce platforms, including Vinted, TikTok, and Temu, impacting millions of users worldwide.\n\nFast and Focused Hiring Process\nTalent Acquisition Interview - 30 min\n\nAPI Integration Interview - 1 hour\n\nTechnical Interview - 2 hours\n\nOperating Principles & Impact - 1 hour\n\nDecision and offer within 48 hours; our process mirrors our pace of work, typically completed in a week.\n\nCompensation, Benefits & Workplace\nGenerous equity, richer than 99% of European startups, with annual top-ups to share Relay’s success.\n\nPrivate health & dental coverage, so comprehensive you’d need to be a partner at a Magic Circle law firm to match it.\n\n25 days of holidays\n\nEnhanced parental leave.\n\nLocated 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.\n\nHardware of your choice.\n\nExtensive perks (gym subsidies, cycle-to-work, Friday office lunch, covered Uber home and dinner for late nights, and more).\n\nWho Thrives at Relay?\nAim with Precision: You define problems clearly and measure your impact meticulously.\n\nPlay to Win: You chase bold bets, tackle the hard stuff, and view constraints as fuel, not friction.\n\n1% Better Every Day: You believe that small, consistent improvements lead to exponential growth. You move quickly, deliver results, and learn from every experience.\n\nAll 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.\n\nPeople-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.\n\nGrow the Whole Pie: You seek out win-win solutions for merchants, couriers, and our customers, because when they thrive, so do we. If these resonate, and you combine strong technical fundamentals with entrepreneurial drive, let’s connect.\n\nRelay is an equal-opportunity employer committed to diversity, inclusion, and fostering a workplace where everyone thrives.","description_format":"text","description_chars":4440,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Parental leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Commerce"],"lifecycle":[{"event":"open","at":"2026-10-15T18:42:55Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Skilled Worker","cap_exempt":false,"checked_at":"2026-10-17T06:21:15+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":23,"band":"cold","label":"Long shot","p_open":1,"p_active":0.418,"p_room":0.55,"age_days":49,"expected_fill_days":37,"reasons":["conf:2","stale_co","win:tail"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/relay-technologies-limited-senior-software-engineer","json_url":"https://alion.io/job/relay-technologies-limited-senior-software-engineer.json","meta":{"generated_at":"2026-10-18T10:37:02Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":15725,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3799710},"rest":"https://alion.io/mcp/rest/get_company?id=3799710"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Frelay-technologies-limited-senior-software-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Frelay-technologies-limited-senior-software-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Frelay-technologies-limited-senior-software-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/relay-technologies-limited-senior-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Frelay-technologies-limited-senior-software-engineer"}]}