Fluxys is an international energy infrastructure group with 1,300 employees active in gas transmission & storage and liquefied natural gas terminalling. As a purpose-led company, we’re committed to fast-track the shift to a carbon neutral world We explore new technologies and invest in infrastructure to accommodate hydrogen, biomethane, CO2 and other molecules for a climate neutral future. At Fluxys Byte it, our mission is to provide digital services to the Fluxys Group companies. For our office located in Lisbon we’re looking for a Developer – Gas Flow Management (m/f/x). |
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| Job purpose |
As a Developer for a Gas Flow Management (GFM) product, you will be part of a crossfunctional, agile team responsible for the design, development, and continuous enhancement of digital solutions supporting Fluxys' commercial operations. |
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| Your responsibilities |
- Design and develop high-quality, maintainable software components within the Fluxys product ecosystem
- Collaborate closely with product owners, business analysts, and business stakeholders to translate real-world challenges into digital solutions
- Contribute to architectural discussions and propose improvements that enhance performance, reliability, and maintainability
- Implement and maintain tests and participate in testing activities
- Review code, mentor peers, and uphold coding standards within the teams
- Contribute to release preparation, including technical documentation and deployment activities
- Support user acceptance testing (UAT), actively participate in demo sessions, and ensure clear, reliable documentation to help users adopt the product
- Handle functional and technical service requests from business stakeholders, providing timely and effective support
- Collaborate with the product team to investigate and resolve incidents, ensuring minimal impact on operations
- Participate in monitoring and troubleshoot issues across development, testing, and production environments
- Actively engage in Agile ceremonies: backlog refinement, sprint planning, reviews, retrospectives, and daily stand-ups
- Help create technical items on the product backlog, phrase them in a value-oriented manner understandable by business stakeholders, and support the product owner to prioritize these according to value delivered
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| About you |
- Affinity with the technical stack used by the team:
- Backend: .NET 8 / .NET Framework, ASP.NET Web API, WCF
- Data & Messaging: SQL Server, Oracle, RabbitMQ, NHibernate, Entity Framework
- Architecture & Patterns: Domain-Driven Design (DDD), Clean Architecture, Design Patterns
- Testing & CI/CD: xUnit / NUnit, Azure DevOps Pipelines
- Frontend: Blazor experience is a plus
- DevOps & Tools: Git, Azure DevOps, automated deployment & monitoring tools
- Strong grasp of software design principles, clean coding practices, and architectural thinking
- Experience working with complex systems and maintaining large codebases over time
- Familiarity with modern testing strategies and CI/CD processes
- Ability to engage with both technical and business stakeholders fluently
- Fluency in Portuguese and in English; knowledge of either French or Dutch is a plus
The Mindset we value: - Product-Focused: You understand that success means delivering real value to users and the business, not just completing tasks
You stay aligned with product goals and customer outcomes. - Collaborative by Nature: You thrive in cross-functional teams, communicate openly, and believe the best solutions come from shared thinking and mutual respect.
- Curious and Proactive: You ask questions, explore beyond the obvious, and challenge the status quo to continuously improve how we work and what we deliver.
- Adaptable and Resilient: You embrace change, stay flexible under shifting priorities, and help others navigate uncertainty with a positive mindset.
- Committed to Quality: You take pride in delivering thoughtful, reliable work
You aim for sustainable outcomes and long-term impact, not just quick fixes. - Transparent and Accountable: You bring visibility to your progress and blockers, take ownership of your responsibilities, and help foster trust across the team.
- Continuous Learner: You stay curious about technology, the energy sector, and modern ways of working—and you’re eager to grow alongside the team and the product
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| Why should you apply? |
We offer a very attractive package of extra-legal benefits, including a.o.: individual bonus, smartphone, internet, flexible budget allowance, meal vouchers, 25 holidays, health insurance for the whole family, as well as the possibility of working from home up to 3 days per week. In addition: - Impact at Scale: Your code powers energy flows across Europe—today and for tomorrow’s low-carbon carriers.
- Autonomy & Ownership: Shape architecture, influence standards, and see your decisions through to production.
- Long-Lived Product: Contribute to a platform designed to endure and evolve with the sector.
- Learning Culture: Experiment, refine, and grow alongside a team committed to excellence.
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