{"id":2683385,"url":"https://alion.io/job/phoenix-technologies-mendix-developer","title":"Mendix developer","company":{"id":100200,"name":"Phoenix Technologies","domain":"phoenix-tech.eu","url":"https://alion.io/company/phoenix-technologies","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Enterprise Apps","role_family":"Enterprise Apps","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":["Brussels, Belgium"],"countries":["BE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":44000,"max_usd":124000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":1341},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"JavaScript","optional":false},{"name":"Scrum","optional":false}],"status":"live","first_seen_at":"2026-10-14T07:14:08Z","employer_posted_date":null,"last_verified_at":"2026-10-14T07:14:08Z","board_verified":false,"closed_at":null,"days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"description":"Role summary\nDesigns, builds and maintains business applications on the Mendix low-code platform within the GSC's environment. Work in agile, multidisciplinary teams alongside business analysts, UX/UI designers, testers and project managers, and apply the GSC's shared development principles so that applications stay consistent, maintainable and reusable across the Mendix portfolio.\nMain tasks\nTranslate user stories and business requirements into working Mendix applications (domain models, flows, pages, security roles).\n\nBuild integrations with internal and external systems via APIs and database connectors, and implement single sign-on (SAML/OIDC).\n\nDevelop reusable modules, widgets and components in line with GSC standards, and contribute to a shared component library.\n\nApply secure-by-design practices, role-based access control and data protection requirements.\n\nBuild accessible interfaces that meet WCAG 2.1 AA.\n\nWrite unit and automated tests, take part in code reviews, and use the Mendix Quality Add-ons or equivalent to keep technical debt under control.\n\nSupport deployment, release management and third-level maintenance of applications in production.\n\nProduce and maintain technical documentation.\n\nRequired qualifications and experience\nAt least 5 years of IT development experience, including at least 3 years hands-on with Mendix.\n\nMendix Advanced Developer certification (minimum).\n\nProven delivery of at least two Mendix applications into production, including integration with enterprise systems.\n\nExperience with Mendix 10 or later, on-premises or private cloud deployment.\n\nWorking knowledge of Java and JavaScript for custom actions and widgets.\n\nExperience working in Scrum or similar agile frameworks.\n\nAssets\nMendix Expert certification.\n\nExperience in an EU institution or public administration.\n\nExperience with Mendix AI capabilities (e.g. GenAI connectors, Maia).\n\nLanguages\nEnglish at C1 level. 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