Fullstack Developer

About the role

KCS IT is seeking a senior full‑stack developer to join its Lisbon team. The role combines front‑end and back‑end work on modern web applications for a variety of clients, with a focus on quality, scalability and collaboration.

Key responsibilities

• Design and implement responsive user interfaces using React and Next.js.
• Develop robust server‑side services with NestJS.
• Ensure applications are scalable, maintainable and performant.
• Collaborate with cross‑functional agile teams to deliver client projects.
• Participate in code reviews, testing and continuous integration processes.
• Contribute to international projects, including opportunities in the Benelux region.

Required profile

• 5+ years of professional experience with React.
• At least 3 years of experience with Next.js.
• Minimum 3 years of experience with NestJS.
• Strong understanding of both front‑end and back‑end development.
• Proven ability to build scalable, maintainable web applications.
• Fluent in Portuguese and English.

Required skills

• React
• Next.js
• NestJS
• JavaScript
• TypeScript

What we offer

• Personalized career development aligned with short‑ and long‑term goals.
• Work on diverse client projects across multiple sectors.
• Free training and certification programs in technology, languages and business.
• International project experience in the Benelux region.
• Hybrid work model with options for remote or onsite assignments.
• Well‑being benefits including nutrition, psychology, medical appointments, yoga and personal training.