Senior Tech Developer

pbDates: /b — /ppbArrangements: /b Consultant assignment; renewable contract. Work regime,

working hours
and remote-working arrangements are not specified. /ppAlgemene Centrale – ABVV seeks an experienced freelance Senior Developer / Tech Lead for its head office in central Brussels. The consultant contributes to challenging software projects using recent technologies. The assignment focuses on developing and optimizing a scalable business platform built on .
NET and Azure. /ppThe consultant sets technical standards by safeguarding code quality, conducting reviews and coaching developers. Business and domain questions are translated into clear technical analyses and specifications. AI agents write, test and refactor code, while the consultant oversees the architecture, security and quality of their output. /ppThe essential stack covers Azure, .
NET, DevOps, Kubernetes, Docker, Angular and practical AI coding tools. Complementary technologies include Marten, GraphQL, PostgreSQL, RabbitMQ, MassTransit, DDD and Elasticsearch, with AZ-204 and AZ-400 certifications considered an advantage. The profile combines problem solving, resilience, initiative, continuous learning, teamwork and autonomy, with Dutch, English and French listed. The preferred assignment dates are 1 November 2026 to 31 December 2028, and the contract is renewable. /ph3Top Reasons to Apply /h3h3Technical leadership ownership /h3h3Broad technology stack /h3h3Renewable long assignment /h3h3Responsibilities /h3pSafeguard code quality through technical standards. /ppConduct code reviews. /ppCoach developers on technical matters. /ppTranslate business and domain questions into technical analyses and specifications. /ppDevelop a scalable .
NET and Azure business platform. /ppOversee architecture, security and quality of AI-agent-written, tested and refactored code. /ph3Must Have /h3pAzure cloud infrastructure /ppAngular frontend development knowledge /ppPractical AI coding experience /ppTechnical leadership experience /ppComplex problem solving /ppStress resilience and focus /ph3Nice to Have /h3pRabbitMQ MassTransit messaging experience /ppElasticsearch search analytics experience /ppAZ-204 certification preferred /ppAZ-400 certification preferred /ph3Detailed Responsibilities and Skills /h3ulliRequired: Experience with code reviews, technical coaching and technical analysis. /liliRequired: Drive and insight to solve complex problems quickly and efficiently. /liliRequired: Ability to handle chaos and pressure without losing focus. /liliRequired: Anticipate needs and propose improvements. /liliRequired: Passion for technology and continuous personal development. /liliRequired: Collaborate with developers, work independently, share knowledge and help raise the team's technical level. /liliRequired: Dutch is listed among the expected languages; no proficiency level is specified. /liliRequired: English is listed among the expected languages; no proficiency level is specified. /liliRequired: French is listed among the expected languages; no proficiency level is specified. /liliPreferred: AZ-204 certification is an advantage. /liliPreferred: AZ-400 certification is an advantage. /li /ulh3Technical skills /h3ulliRequired: Experience with Azure services and cloud-based infrastructure. /liliRequired: In-depth .
NET knowledge and application development experience. /liliRequired: Experience with DevOps, Kubernetes and Docker, including CI/CD pipelines, containerization and implementing a DevOps culture. /liliRequired: Knowledge of frontend development with Angular. /liliPreferred: Experience with API design and optimization using GraphQL. /liliPreferred: Knowledge and practical application of DDD principles to build scalable, well-structured applications. /liliPortal skills list: .
NET / C# Development — Senior. Priority is not stated in this list; preferred status in the detailed description is preserved. /liliPortal skills list: AI-Assisted Software Engineering — Senior. Priority is not stated in this list; preferred status in the detailed description is preserved. /liliPortal skills list: Analytical Thinking Problem Solving — Senior. Priority is not stated in this list; preferred status in the detailed description is preserved. /liliPortal skills list: Application Security Code Quality Assurance — Senior. Priority is not stated in this list; preferred status in the detailed description is preserved. /liliPortal skills list: Cloud-Native Technologies — Senior. Priority is not stated in this list; preferred status in the detailed description is preserved. /liliPortal skills list: Collaboration Knowledge Sharing — Senior. Priority is not stated in this list; preferred status in the detailed description is preserved. /liliPortal skills list: DevOps CI/CD Engineering — Senior. Priority is not stated in this list; preferred status in the detailed description is preserved. /liliPortal skills list: Enterprise Software Development — Senior. Priority is not stated