{"id":3995450,"url":"https://alion.io/job/engiflex-or-permanent-senior-full-stack-and-mobile-developer-technical-lead-freelance-possible","title":"or Permanent Senior Full-stack and Mobile Developer - Technical Lead (Freelance possible)","company":{"id":4413137,"name":"EngiFlex","domain":"engiflex.be","url":"https://alion.io/company/engiflex","size_band":"51-200","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Manatal","truth_index":null},"role":"Mobile","role_family":"Mobile","seniority":"lead","employment_type":"freelance","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Brussels, Belgium"],"countries":["BE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ASP.NET Core","optional":false},{"name":"Azure DevOps","optional":false},{"name":"C#","optional":false},{"name":"Docker","optional":false},{"name":"Entity Framework Core","optional":false},{"name":"Expo","optional":false},{"name":"Git","optional":false},{"name":"IdentityServer","optional":false},{"name":"JavaScript","optional":false},{"name":"JQuery","optional":false},{"name":"Kubernetes","optional":false},{"name":"MS SQL","optional":false},{"name":"MVC","optional":false},{"name":"Node JS","optional":false},{"name":"Nuxt.js","optional":false},{"name":"React Native","optional":false},{"name":"Rest API","optional":false},{"name":"Sass","optional":false},{"name":"Vue.js","optional":false},{"name":"xUnit","optional":false},{"name":"Azure","optional":true},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2026-11-10T01:06:06Z","employer_posted_date":"2026-11-10","last_verified_at":"2026-11-11T18:19:57Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Tasks and responsibilities\nThe IT development team is looking for an experienced full-stack and mobile developer with strong technical expertise and at least 8 years of experience in software development.\nIn this role, you will:\nDefine and maintain the technical architecture of software solutions, with attention to scalability, security, performance and maintainability.\nTranslate business requirements into robust technical designs and select suitable technologies.\nContribute directly to software development, especially for complex or critical components.\nSafeguard code quality and architectural consistency through code reviews, technical standards and established best practices.\nProvide technical guidance to developers, support knowledge sharing and contribute to continuous improvement.\nIdentify technical risks, dependencies and technical debt, and drive appropriate solutions.\nWork with the head of service and project managers to support successful project delivery.\nParticipate actively in project teams across software design, development, testing and delivery.\nDevelop and maintain mobile applications.\nContribute to the testing, release and deployment of mobile applications on Google Play and the Apple App Store.\nYour profile\nYou have experience as an established full-stack developer and can take technical ownership while guiding colleagues. You have at least 8 years of experience in software development and are comfortable working across backend, frontend, mobile development and DevOps.\nTechnical skills\nObject-oriented programming, design patterns and n-tier architecture.\nBackend development with C#, .NET Framework 4.0, 4.5 and 4.8, .NET Core, .NET 10, ASP.NET Core, ASP.NET Core Web API, ASP.NET MVC and Entity Framework.\nFrontend development with HTML, CSS, JavaScript, jQuery, SCSS/SASS, Nuxt.js, Node.js and Vue.js.\nDatabases and query languages, including Microsoft SQL Server and T-SQL.\nDevOps and containerisation with Microsoft Azure DevOps, Git, Docker and Kubernetes.\nMobile development with React Native and Expo, including deployment to Google Play and the Apple App Store.\nUnit testing with NUnit and xUnit.\nIdentityServer, OpenID Connect and security for web applications.\nREST API services.\nProfessional competencies\nTechnical leadership and the ability to guide and advise colleagues.\nClear communication and the ability to explain technical concepts and standards.\nStrong collaboration skills when working with developers, project managers and designers.\nA proactive and accountable approach to identifying risks and taking responsibility.\nWillingness to learn new technologies and continuously improve technical skills.\nAbility to share expertise and contribute to knowledge sharing.\nLanguages\nFrench or Dutch, with professional reading, writing and speaking skills.\nEnglish, with professional reading, writing and speaking skills.\nOffer\nYou will be part of a growing Belgian SME where initiative and personal development are encouraged. We will provide you with an enjoyable work environment with fun colleagues. We will work out a career plan with you, with attention and a budget for extra education/certification. You can count on an attractive salary, supplemented with extra-legal benefits, including a company car.\n(Freelance is also possible)","description_format":"text","description_chars":3297,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"Dutch","level":"All levels","optional":false},{"language":"English","level":"All levels","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Recruiting & Staffing","Engineering Services","IT Staffing & Staff Augmentation"],"lifecycle":[{"event":"open","at":"2026-11-10T01:06:06Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":1,"expected_fill_days":6,"reasons":["conf:2","velocity","win:early"],"computed_at":"2026-11-11T05:49:22Z"},"pay":null,"html_url":"https://alion.io/job/engiflex-or-permanent-senior-full-stack-and-mobile-developer-technical-lead-freelance-possible","json_url":"https://alion.io/job/engiflex-or-permanent-senior-full-stack-and-mobile-developer-technical-lead-freelance-possible.json","meta":{"generated_at":"2026-11-11T21:02:03Z","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":41154,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-12T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":4413137},"rest":"https://alion.io/mcp/rest/get_company?id=4413137"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fengiflex-or-permanent-senior-full-stack-and-mobile-developer-technical-lead-freelance-possible"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Fengiflex-or-permanent-senior-full-stack-and-mobile-developer-technical-lead-freelance-possible"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fengiflex-or-permanent-senior-full-stack-and-mobile-developer-technical-lead-freelance-possible"},{"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/engiflex-or-permanent-senior-full-stack-and-mobile-developer-technical-lead-freelance-possible\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fengiflex-or-permanent-senior-full-stack-and-mobile-developer-technical-lead-freelance-possible"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3995450}},{"tool":"search_jobs","arguments":{"company":"engiflex.be","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3995450},"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. 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