{"id":716707,"url":"https://alion.io/job/elockers-lead-back-end-engineer","title":"Lead Back-end Engineer","company":{"id":3185997,"name":"Sjef","domain":"sjef.app","url":"https://alion.io/company/sjef-app","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Recruitee","truth_index":{"grade":"B","score":75,"open_postings":6,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Amsterdam, Netherlands"],"countries":["NL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":62000,"max_usd":126000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":19},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"DigitalOcean","optional":false},{"name":"Node JS","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Apache Kafka","optional":true},{"name":"ClickHouse","optional":true},{"name":"Expo","optional":true},{"name":"GDPR","optional":true},{"name":"JavaScript","optional":true},{"name":"Jira","optional":true},{"name":"Metabase","optional":true},{"name":"New Relic","optional":true},{"name":"React Native","optional":true},{"name":"React.js","optional":true},{"name":"Sentry","optional":true}],"status":"live","first_seen_at":"2026-09-03T14:56:22Z","employer_posted_date":"2026-09-03","last_verified_at":"2026-10-17T09:08:48Z","board_verified":true,"closed_at":null,"days_open":43,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":43},"description":"About Elockers\nElockers runs the smart-locker platform that festivals, venues, and events across six countries rely on for real time payments and marketplace-style payouts - including on-sale moments where a large share of a site's lockers can sell out within a minute. We're live in eleven countries, with further international expansion and two acquisitions underway.\nOur platform is genuinely strong: microservices architecture (~30 services), event-driven data flow, and a payments stack built for a real marketplace. This isn't a role about fixing something broken - it's about taking technical ownership of a platform that already works well, and pushing it further.\nThe Role\nWe're looking for an exceptionally strong, hands-on Lead Engineer to take technical ownership of a platform where software, payments, and physical hardware come together. You'll match our current technical level and raise it - through your own hands-on work, and by making the people around you better. This is not a pure management role: you'll design architecture, write and review code, and solve genuinely hard problems yourself.\nWhat you'll own\nTechnical ownership of our microservices platform, with Node.js and modern architecture patterns at the core\nCloud-native engineering on DigitalOcean App Platform - deployment, scaling, monitoring, and production reliability\nReliability at peak: real-time payments and traffic spikes during live events, with zero tolerance for downtime\nOur Adyen-based payments and marketplace systems, and how our software connects to physical locks and hardware\nSpreading critical knowledge across the team so no single person is a single point of failure\nSetting the bar on engineering discipline - CI/CD, documentation, AI-assisted development - as we raise an already-strong platform further\nBeing the clear, dependable bridge between commercial priorities and engineering delivery\nWhat you'll bring\nDeep, hands-on technical seniority - you independently design, build, and debug complex distributed systems\n\nStrong, current Node.js and microservices expertise - a core requirement\n\nReal soft skills and team fit - a clear communicator who makes the people around you better, not a lone operator\n\nGenuine ownership and event mentality - you step up when something business-critical is on the line\n\nExperience introducing engineering process and AI-assisted development in a fast-moving team\n\nCloud/platform engineering experience, ideally DigitalOcean App Platform\n\nPayments or marketplace experience (Adyen, PSPs, split payments, KYC) and comfort with high-peak, mission-critical systems\n\nA track record of coaching and knowledge transfer in a small team\n\nIoT / hardware integration experience is a genuine plus - our software talks to physical lockers\n\nNice to have: product/business sense, React Native/Expo experience, multi-country scaling with GDPR awareness, background in events or ticketing.\nOur stack today\nMicroservices (~30 services), moving toward Node.js at the core. Adyen for payments. Kafka, ClickHouse, Metabase for data. React Native/Expo for mobile. DigitalOcean, Sentry, New Relic, Jira for infra and tooling.\nWhat we offer\nA competitive gross annual salary, depending on experience\nReal technical ownership of a platform where software, payments, and hardware genuinely come together\nSound like you? The most efficient way to apply is via Apply Here or through our website.","description_format":"text","description_chars":3416,"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":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-11T06:12:20Z"}],"visa":[],"liveness":{"score":27,"band":"fade","label":"Fading","p_open":1,"p_active":0.607,"p_room":0.45,"age_days":43,"expected_fill_days":26,"reasons":["conf:1","win:tail"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/elockers-lead-back-end-engineer","json_url":"https://alion.io/job/elockers-lead-back-end-engineer.json","meta":{"generated_at":"2026-10-17T11:41:32Z","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":15341,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":3185997},"rest":"https://alion.io/mcp/rest/get_company?id=3185997"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Felockers-lead-back-end-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%2Felockers-lead-back-end-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%2Felockers-lead-back-end-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/elockers-lead-back-end-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Felockers-lead-back-end-engineer"}]}