{"id":2293989,"url":"https://alion.io/job/codifly-medior-javascript-developer","title":"Medior Javascript Developer","company":{"id":4413074,"name":"Codifly","domain":"codifly.be","url":"https://alion.io/company/codifly","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Frontend","role_family":"Frontend","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Belgium"],"countries":["BE"],"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":"Agile","optional":false},{"name":"Apollo Client","optional":false},{"name":"AWS","optional":false},{"name":"Cypress","optional":false},{"name":"Docker","optional":false},{"name":"Git","optional":false},{"name":"GraphQL","optional":false},{"name":"Informatica","optional":false},{"name":"JavaScript","optional":false},{"name":"Jest","optional":false},{"name":"LangChain","optional":false},{"name":"LLM","optional":false},{"name":"Mocha","optional":false},{"name":"n8n","optional":false},{"name":"Node JS","optional":false},{"name":"OpenSSL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"RAG","optional":false},{"name":"React Native","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"Vite","optional":false},{"name":"WebSockets","optional":false},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2026-10-07T13:15:40Z","employer_posted_date":null,"last_verified_at":"2026-10-07T13:15:40Z","board_verified":false,"closed_at":null,"days_open":9,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":9},"description":"Codifly is de place to be voor enthousiaste en gepassioneerde mensen die de beste complexe digitale oplossingen willen ontwikkelen. Bij Codifly beseffen we dat het onze medewerkers zijn die het verschil maken en we erkennen ook dat een competitief salaris alleen onvoldoende is om gelukkig te zijn op het werk. We bieden de beste technische apparatuur, richten ons op kwaliteit, stimuleren continu leren en werken hard aan de bedrijfscultuur.\n\nDe Medior JavaScript Developer zal Codifly helpen om ’the next level’ te bereiken. Samen met het team zal hij/zij snelle en schaalbare webapplicaties, native applicaties en webservers ontwikkelen.\n\nOnze missie\n\nWij geloven sterk in web en IoT en zijn er vast van overtuigd dat de technologische evolutie hier nog maar net begonnen is. Met als achterliggende visie “Improve the connected world”, verbeteren we als koplopers dag na dag de verbonden wereld. Zo dragen wij ons steentje bij in de manier waarop we leven, communiceren, werken en spelen. Concreet gebruiken we de laatste JavaScript-technologieën (React.js, React-Native, Node.js, GraphQL, Apollo, Angular2…) voor het bouwen van zowel web als native applicaties met een sterke visuele identiteit en een optimale gebruikservaring, perfect afgestemd op de noden van de eindgebruiker.\n\nBasisvereisten: *\n\nJe hebt een bachelordiploma Informatica of een masterdiploma Computerwetenschappen (studieperiode van 3 jaar of langer).\n\nJe hebt minstens 3 jaar professionele werkervaring binnen het domein van full stack development in JavaScript-technologieën.\n\nJe drukt je vlot uit in het Nederlands en zeer goed in het Engels.\n\nJe bent bereid om zowel ter plaatse als op afstand te werken.\n\nJe hebt een EU-, EER- of Zwitsers staatsburgerschap of een in België geldige arbeidskaart.\n\n* Wij reageren niet op sollicitaties die niet aan deze objectieve basisvereisten voldoen.\n\nTechnische vereisten: *\n\nJe hebt ervaring met de nieuwste frontend technologieën (React 16.8+ met hooks, Apollo client, Vite, HTML5, CSS3), backend technologieën (Node.js, Express/Koa, GraphQL, Apollo server, web sockets, ORM, NoSQL-databases, PostgreSQL) en kan unit- en end-to-end testen schrijven (Jest, Mocha & Chai, Cypress).\n\nJe kent de basis (HTTP, REST, JSON, Git,etc.) en je hebt grondige kennis van de laatste standaarden van JavaScript en de static typing capaciteiten van TypeScript.\n\nJe beschouwt security als een vitaal aspect en hebt een diepe interesse in security-gerelateerde concepten (HTTPS, JWT, OpenSSL, CSRF, XSS, SQL Injection, OAuth,etc.).\n\nBonus:\n\nJe hebt ervaring met native development met React-Native.\n\nJe hebt werkervaring met scripting, AWS, Docker.\n\nJe bent geboeid door de Generative AI: je kent basisbegrippen als LLM en RAG, je werkt graag met tools als LangChain en n8n, en je wordt (net als wij) helemaal warm van prompt engineering en context management.\n\nJe weet hoe je agile technieken en tools moet gebruiken om iteratief complexe softwareproducten te ontwikkelen en te verzenden.\n\nLet’s talk!\n\nGeïnteresseerd? Neem gerust een kijkje of reageer via onze website op https://codifly.be/en/careers of neem contact op met ons via . Bezorg ons je cv en vertel ons meer over je portfolio met recent werk dat je kunt laten zien als je ons bezoekt. We hebben geen motivatiebrief nodig.","description_format":"text","description_chars":3301,"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":"2026-10-11T19:30:43Z"}],"visa":[],"liveness":{"score":75,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.793,"p_room":0.945,"age_days":8,"expected_fill_days":20,"reasons":["seen:8","win:mid"],"computed_at":"2026-10-16T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/codifly-medior-javascript-developer","json_url":"https://alion.io/job/codifly-medior-javascript-developer.json","meta":{"generated_at":"2026-10-17T04:54:31Z","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":6385,"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":4413074},"rest":"https://alion.io/mcp/rest/get_company?id=4413074"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcodifly-medior-javascript-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%2Fcodifly-medior-javascript-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%2Fcodifly-medior-javascript-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/codifly-medior-javascript-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcodifly-medior-javascript-developer"}]}