C++ Developer – Financial Systems

Lisbon, Portugal
Mid-level (2-3 Years)
Hybrid
English Required No Relocation Package Available

We’re looking for a C++ Developer to join KWAN on a high-impact project within a global financial environment.

You’ll be working with complex systems used in fixed-income trading. This is not a basic dev role, it’s about understanding how systems, data, and business actually connect.

What you’ll be doing

  • Design, implement and maintain C++ components for financial software (Summit);
  • Work on system integrations within a service-oriented architecture;
  • Create unit and functional tests for all developments;
  • Participate in code reviews (manual + automated);
  • Maintain proper documentation (JIRA, Confluence);
  • Contribute to non-regression tools and engineering efficiency;
  • Support DevOps-related tasks when needed;
  • Collaborate daily with international teams (mainly Paris).

What we’re looking for

  • Strong experience with C++;
  • Solid knowledge of SQL and Git;
  • Experience with shell scripting and/or C#;
  • Comfortable working in complex, integrated systems;
  • Strong communication skills and autonomy;
  • English C1 (mandatory).

Nice to have

  • Experience with Summit or similar financial platforms;
  • Exposure to Finance (Front/Middle Office, trading workflows);
  • Knowledge of financial products (bonds, swaps, CDS, FX, derivatives);
  • Experience with Python, Jenkins, XLDeploy, Artifactory;
  • French (B2).

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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