{"id":824612,"url":"https://alion.io/job/coolblue-backend-developer-typescript","title":"Backend Developer Typescript","company":{"id":54499,"name":"Coolblue","domain":"coolblue.nl","url":"https://alion.io/company/coolblue","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":75,"open_postings":26,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":38,"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":["Rotterdam, Netherlands"],"countries":["NL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":59000,"max_usd":101000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":62},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Amazon S3","optional":false},{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"DynamoDB","optional":false},{"name":"Node JS","optional":false},{"name":"PHP","optional":false},{"name":"TypeScript","optional":false},{"name":"CI/CD","optional":true},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-06-29T07:17:48Z","employer_posted_date":"2026-06-29","last_verified_at":"2026-10-17T04:32:44Z","board_verified":true,"closed_at":null,"days_open":109,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":109},"description":"What does a Backend Developer Typescript do at Coolblue?\nAt Coolblue, you'll be part of a tight-knit, multicultural team of 3-7 developers, taking on the role of an experienced Backend Developer Typescript. Working in an agile environment, you and your team own the end-to-end development of specific website features and the microservices behind them. You’ll regularly brainstorm with Customer Journey Specialists and UX/UI Designers to build solutions that wow our customers. Your day-to-day includes diving into pull requests, doing code reviews, and pairing up with teammates to deliver clean, efficient code.\nYou enjoy doing this\nWriting TypeScript code.\nWriting automated tests such as Unit tests, Integration tests or End-to-End tests.\nWorking in a cloud environment with AWS Services such as Lambda, SNS + SQS, DynamoDB, S3 and Cloudfront.\nSolving problems by using diligent best practices and principles, such as SOLID and design patterns.\nWorking in Microservice architectures.\n Money. Depending on your experience and skills, it will range between €3,700 and €6,500 gross per month (based on a 40-hour work week).\nWorking together in an international environment with colleagues from the Netherlands, Belgium, Spain, Brazil, Mexico, Italy, and many more.\nAn extraordinarily good work environment. Where we interact as friends and you can just be yourself.\nMonthly drinks, freshly prepared snacks, legendary Coolblue parties and the best team activities.\nA fine balance between working at the office and working from home. Of course, we’ll help you create the best home-office possible. Including desk chair, laptop, and blue garlands.\nPlenty of room for your own ideas, initiatives and choices. You do your work your way.\nTravel allowance, a retirement plan and an allowance when you work from home.\n25 leave days. As long as you promise to come back.\nA picture-perfect office at a great location. You could crawl to work from Rotterdam Central Station. We recommend just walking for 2 minutes, though.\nWith over 100 training courses in our own Coolblue University, you become a little better every day.\nA discount on all our products.\n 5+ years of experience with TypeScript. Experience with Node.js and pure/vanilla PHP is a plus.\nYou have a BSc or MSc, for example in Informatics.\nReady to boost your tech and soft skills, while mentoring colleagues to help them grow.\nYou know how to automate recurring tasks and implement them seamlessly into CI/CD systems.\nYou live in Europe\n As an experienced Backend Developer Typescript, you’ll dive into optimizing crucial parts of our website. While you know your way around PHP, your real superpower is setting up and maintaining microservices in TypeScript. Plus, you'll be enhancing internal tools, making sure your colleagues have everything they need to deliver top-notch service to our customers.","description_format":"text","description_chars":2858,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false}]},"benefits":["Retirement plans"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["E-commerce Platforms","Home Appliances"],"lifecycle":[{"event":"open","at":"2026-09-12T13:56:28Z"}],"visa":[],"liveness":{"score":9,"band":"cold","label":"Long shot","p_open":1,"p_active":0.315,"p_room":0.28,"age_days":109,"expected_fill_days":38,"reasons":["conf:1","stale_co","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/coolblue-backend-developer-typescript","json_url":"https://alion.io/job/coolblue-backend-developer-typescript.json","meta":{"generated_at":"2026-10-17T05:55:35Z","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":8081,"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":54499},"rest":"https://alion.io/mcp/rest/get_company?id=54499"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcoolblue-backend-developer-typescript"},{"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%2Fcoolblue-backend-developer-typescript"},{"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%2Fcoolblue-backend-developer-typescript"},{"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/coolblue-backend-developer-typescript\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcoolblue-backend-developer-typescript"}]}