Tech Lead C# & React

Lisbon, Portugal
Specialist (5+ Years)
Hybrid
English Required Not Accepting Candidates Living Abroad

We are looking for a Tech Lead (C# & React.js) to work in Lisbon who's eager to embark on an exciting new opportunity!

What is this challenge about

  • Lead the technical design and development of web applications using .NET and React;
  • Define and maintain scalable architecture and development best practices;
  • Develop and maintain REST APIs and backend services using .NET / .NET Core;
  • Collaborate with cross-functional teams to deliver high-quality digital solutions;
  • Ensure implementation of web security standards and vulnerability mitigation practices;
  • Oversee CI/CD pipelines, version control workflows, and release processes;
  • Monitor and optimize web performance, including Core Web Vitals;
  • Support implementation and integration of analytics, tag management, and consent tools.
  • Experience as a Tech Lead or Senior Developer;
  • Minimum of 7 years of application development experience using the .NET framework;
  • Strong knowledge of React, JavaScript/TypeScript, HTML, and the front-end ecosystem;
  • Strong experience with .NET / .NET Core and REST APIs;
  • Experience with GitHub, GitFlow, and CI/CD pipelines;
  • Knowledge of web security policies, particularly CSP, OWASP, and vulnerability mitigation;
  • Experience with web performance optimization (Core Web Vitals);
  • Familiarity with cloud platforms, preferably Azure
  • Experience with Adobe Experience Manager (AEM) CMS (Plus);
  • Knowledge of GA4 and Google Tag Manager (Plus);
  • Understanding of technical SEO (Plus);
  • Experience managing cookies, tag managers, and consent management platforms (CMP) (Plus).

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
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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Tell Us About You

We review every application. If there’s alignment, we won’t let it get lost in a database.