.NET Developer

Lisbon, Portugal
Mid-level (2-3 Years)
Hybrid
English Required Portuguese Required

What is this challenge about:

  • We are looking for a Developer for the Gas Flow Management (GFM) product to join a cross-functional agile team responsible for building and evolving digital solutions that support the commercial and operational ecosystem.
  • You will contribute to software that spans the full gas flow lifecycle, including customer onboarding, contracting, demand processing, flow planning, network balancing, billing, invoicing, reporting, and data exchange across European energy operators.
  • This is a long-term product-focused environment where engineering quality, scalability, and business alignment are key.
  • Design, develop, and maintain high-quality, scalable, and maintainable software components within the GFM ecosystem.
  • Collaborate with product owners, business analysts, and stakeholders to translate operational challenges into effective digital solutions.
  • Contribute to architectural discussions and propose improvements in performance, reliability, and maintainability.
  • Implement and maintain automated tests and participate in testing activities.
  • Participate in code reviews and help uphold coding standards across the team.
  • Support release preparation, including technical documentation and deployment activities.
  • Participate in user acceptance testing (UAT) and demo sessions, ensuring clear documentation for end users.
  • Provide support for functional and technical service requests from business stakeholders.
  • Actively participate in Agile ceremonies (planning, refinement, reviews, retrospectives, daily stand-ups).

What we are looking for:

  • +3 years of experience with backend development using .NET (preferably .NET 8 / .NET Framework).
  • Experience with ASP.NET Web API and WCF.
  • Strong knowledge of SQL Server and Oracle databases.
  • Experience with messaging systems such as RabbitMQ.
  • Experience with ORM frameworks such as Entity Framework and NHibernate.
  • Understanding of software architecture principles, including Domain-Driven Design (DDD), Clean Architecture, and design patterns.
  • Experience with testing frameworks (xUnit or NUnit).
  • Familiarity with CI/CD pipelines (Azure DevOps preferred).
  • Experience working with complex, large-scale systems and long-lived codebases.
  • Product-focused mindset, prioritizing business and user value.
  • Strong collaboration and communication skills in cross-function
  • Strong ability to collaborate with both technical and business stakeholders.
  • Living in Lisbon (hybrid role, 2x week in the office)
  • Fluent level of English.
  • Knowledge of French ou Dutch is a strong plus.
  • Possibility of internalisation within the cliente after 6 months on the role

We connect IT professionals with projects that match their skills, professional experience, and goals, then we offer a career progression program, delivered by in-house specialists - our People Experience Partners - to guide them through our journey with us.

What we offer:

  • A project that matches your skills and ambitions, as well as your preferences for working policies and culture.
  • A competitive salary with awesome benefits and opportunities to leverage your knowledge and network to earn additional income.
  • An empowering and respectful work culture enriched with social and learning events.
  • A People Experience Partner specially assigned to you - your go-to career guide, responsible for supporting your growth, facilitating training, and ensuring your work-life balance at KWAN.
At KWAN, they make sure that I feel comfortable with the client I’m working for and that what I’m doing aligns with my career aspirations.
Luis Caldeira, DevOps @ KWAN
At KWAN, I’m given the space to be myself and do what I love. I have control over the projects I work on, as well as the direction of my career.
Pedro Fonseca, Front End Developer @ KWAN
I see my People Experience Partner as someone who is always available to provide me with motivation and constant feedback, which helps me be sure that I am in the right place.
Josimar dos Reis, Software Developer @ KWAN
I know that I’ve contributed to the growth of a company that truly values a “people first culture”, because my ideas, experiences, and individuality were always appreciated.
João Nascimento, Software Developer (KWAN Alumni)
My two years at KWAN were an incredible experience! From the start, I was welcomed into a warm and collaborative environment where I felt truly supported.
Laís Ortiz, Software Developer @ (KWAN Alumni)
Grab this opportunity, apply now!

What You Can Expect as a KWANer

Respect isn’t optional here

You’re trusted to deliver and supported to speak up.

Dedicated People Experience Partner

Someone accountable for your growth, not your allocation.

Continuous learning, built in

Learning that keeps pace with the systems you build.

Recognition that’s visible

Your impact doesn’t go unnoticed. Through our Rocket Points System, we constantly recognize your contributions.

A culture you can feel

From movie and quiz nights to dinners and our annual summer gathering, we don’t just work together - we build real connections.

Flexible spaces to work your way

Remote-first, with physical hubs when you want connection.

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