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Location
In office (Brussels)
Seniority
Senior · 6+ years exp
Employment
Freelance

Confirmed on the employer's own hiring board on Nov 10, 2026. First seen by Alion on Nov 10, 2026.

Overview
Company
Impact
Profile match
EngiFlex is a Belgian engineering and IT staffing and consulting firm, based in Puurs-Sint-Amands, that seconds engineers, developers and validation experts to client companies. It works mainly for pharma and life sciences, energy, industry and IT clients across Flanders, Brussels and Wallonia, covering automation, utilities, safety, product science and pharma project work through secondment, talent sourcing and project delivery. It recruits commissioning and qualification engineers, MES and OT automation specialists, SAP and Dynamics consultants, Java, Python and PHP developers, data engineers and IT project managers, employed or freelance.

Tasks and responsibilities

An IT development team is looking for a full-stack web and mobile developer with at least six years of experience.

The role includes:

  • Maintain the technical architecture of software solutions.
  • Work with the technical team to translate business requirements into suitable technical designs and technology choices.
  • Contribute directly to software development, particularly for complex or critical components.
  • Support code quality and architectural consistency through code reviews, technical standards and development best practices.
  • Participate in project teams and contribute to the design, development, testing and delivery of software solutions.
  • Develop and maintain mobile applications.
  • Contribute to the testing, release and deployment of mobile applications on the Google Play Store and Apple App Store.

Your profile

You have proven experience as a full-stack developer and can work independently on web and mobile applications.

Required technical skills

  • Object-oriented programming, design patterns and n-tier architecture.
  • Backend development with C#, .NET Framework 4.0/4.5/4.8, .NET Core, .NET 10, ASP.NET Core for REST APIs, ASP.NET MVC and Entity Framework.
  • Front-end development with HTML, CSS, JavaScript, jQuery, SCSS/SASS, Nuxt.js, Node.js and Vue.js.
  • MS SQL Server and T-SQL.
  • MS Azure DevOps, Azure DevOps with Git, Docker and Kubernetes.
  • Mobile development with React Native and Expo, including deployment to Google Play and the App Store.
  • Unit testing with NUnit and xUnit.
  • IdentityServer, OpenID Connect and web application security.
  • REST API services.

Soft skills and personal competencies

  • Analyse complex problems, understand technical requirements and identify suitable solutions.
  • Work independently, take ownership of assigned tasks and proactively identify areas for improvement.
  • Collaborate effectively with developers, designers, functional analysts, project managers and other stakeholders.
  • Communicate clearly and explain technical topics to colleagues.
  • Adapt to changing requirements, new technologies and different development environments.
  • Maintain a consistent focus on code quality, reliability, usability and maintainability across web and mobile applications.

Languages

French or Dutch, in reading, writing and speaking.

English, in reading, writing and speaking.

Offer

You 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.

(Freelance is also possible)

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