{"id":728959,"url":"https://alion.io/job/onthatass-backend-developer","title":"Backend Developer","company":{"id":679283,"name":"ON THAT ASS","domain":"onthatass.com","url":"https://alion.io/company/onthatass","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":null},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"Datadog","optional":false},{"name":"Docker","optional":false},{"name":"MySQL","optional":false},{"name":"Symfony","optional":false},{"name":"Terraform","optional":false},{"name":"Amazon EKS","optional":true},{"name":"Amazon S3","optional":true},{"name":"Doctrine","optional":true},{"name":"GitLab CI","optional":true},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true},{"name":"PHP","optional":true},{"name":"Redis","optional":true},{"name":"TypeScript","optional":true},{"name":"Vue.js","optional":true}],"status":"live","first_seen_at":"2026-05-06T12:49:52Z","employer_posted_date":"2026-05-06","last_verified_at":"2026-11-06T12:16:37Z","board_verified":true,"closed_at":null,"days_open":184,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":183},"description":"Bouw mee aan een platform dat elke maand honderdduizenden members bereikt.\nNote: Professional proficiency in Dutch is required for this role.\nBij ON THAT ASS bouwen we aan een internationaal subscription-platform met meer dan 800.000 actieve memberships. Elke maand verwerken we grote aantallen transacties, logistieke processen en klantinteracties. Achter die groei draait een platform dat continu moet presteren, schalen en doorontwikkelen.\nOm ons platform verder te ontwikkelen zoeken we een Backend Developer die graag bouwt aan software met impact.\nWat ga je doen?\nAls Backend Developer werk je aan de kern van ons platform. Je ontwikkelt schaalbare Symfony-applicaties, denkt mee over architectuurkeuzes en draagt bij aan een platform dat dagelijks honderdduizenden gebruikers ondersteunt.\nJe werkt volgens principes als Domain-Driven Design en event-driven architectuur en hebt oog voor hoe software zich gedraagt in productie. Daarbij werk je nauw samen met Product, Development en Infrastructure om technische oplossingen te realiseren die bijdragen aan onze groei.\nJe houdt je onder andere bezig met:\nHet ontwikkelen van nieuwe domeinen binnen onze DDD-architectuur.\n\nHet bouwen van event-driven integraties met CRM-, payment- en logistieke systemen.\n\nHet verbeteren van performance, schaalbaarheid, monitoring en deployment processen.\n\nTech stack\nPHP 8+, Symfony, Doctrine, MySQL, Redis, AWS (EKS, SQS, S3, CloudFront), Docker, Terraform, GitLab CI/CD en Datadog.\nWie ben jij?\nJe bent een ervaren backend developer die verder kijkt dan alleen het opleveren van functionaliteit. Je denkt na over schaalbaarheid, onderhoudbaarheid en de impact van technische keuzes op de lange termijn.\nMust-haves\nMinimaal 5 jaar ervaring met PHP en Symfony.\n\nErvaring met schaalbare applicaties en softwarearchitectuur.\n\nKennis van Domain-Driven Design en event-driven systemen.\n\nErvaring met MySQL, Docker en CI/CD-processen.\n\nJe werkt zelfstandig en communiceert gemakkelijk binnen een multidisciplinair team.\n\nNice-to-haves\nErvaring met AWS, Kubernetes of Terraform.\n\nBekendheid met Datadog of vergelijkbare monitoring tooling.\n\nKennis van security-vraagstukken zoals WAF en DDoS-bescherming.\n\nErvaring met Vue.js of TypeScript.\n\nWat bieden wij?\nEen salaris tussen €4.500 en €6.800 afhankelijk van ervaring.\n\nEen fulltime functie (32-40 uur) met veel ruimte voor initiatief en technische inbreng.\n\nHybride werken met minimaal twee dagen per week op kantoor in Rosmalen.\n\nReiskostenvergoeding, dagelijkse lunch op kantoor en OTA-extra's.\n\nInteresse?\nLijkt het je interessant om te werken aan een platform met echte schaal, technische uitdaging en veel ruimte om mee te denken over de toekomst van onze architectuur? Dan maken we graag kennis met je.","description_format":"text","description_chars":2745,"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":[{"language":"Dutch","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-11T09:14:22Z"}],"visa":[],"liveness":{"score":17,"band":"cold","label":"Long shot","p_open":1,"p_active":0.485,"p_room":0.36,"age_days":183,"expected_fill_days":92,"reasons":["conf:5","win:tail","crowd:"],"computed_at":"2026-11-06T05:58:05Z"},"pay":null,"html_url":"https://alion.io/job/onthatass-backend-developer","json_url":"https://alion.io/job/onthatass-backend-developer.json","meta":{"generated_at":"2026-11-06T22:25:28Z","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":568,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-07T00:00:00Z"}},"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":679283},"rest":"https://alion.io/mcp/rest/get_company?id=679283"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fonthatass-backend-developer"},{"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%2Fonthatass-backend-developer"},{"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%2Fonthatass-backend-developer"},{"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/onthatass-backend-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fonthatass-backend-developer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":728959}},{"tool":"search_jobs","arguments":{"company":"onthatass.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":728959},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}