Full Stack Developer Java + React

We’re looking for the special, unique and amazing YOU!

@ KCS IT, we look for the ones that stands out, for those that always wants to be better and fight for it, and for those who have the same values that we do: dedication, energy, integrity, transparency, flexibility, trust, honesty, hard work, proactivity, team work.

At KCS we stand for equality and value diversity. We create a safe, diverse environment where opportunities are equal for everyone! We do not discriminate based on age, ethnicity, sexual orientation, gender, disability or any factor other than merit. All applications with skills for the position are welcome!

Job Title

Full Stack Developer Java + React (Senior level)

Type of position: Hybrid model in Lisbon (Candidates need to be already living in Portugal!)

Qualifications

• Minimum of 4 to 5 years of experience in a Full Stack role.
• Strong experience with Java (8+) and Spring / Spring Boot for backend development.
• Hands‑on experience with React.js, including components, hooks, state management, and routing.
• Good knowledge of JavaScript / TypeScript, HTML, and CSS.
• Experience with relational (e.g., PostgreSQL, MySQL) and non‑relational (e.g., MongoDB, Redis) databases.
• Proven experience working with and building REST APIs.
• Proficiency with Git version control.
• Comfort with manual testing and awareness of automated testing practices.
• Fluent English (spoken and written) – essential for daily collaboration.

Nice to have

French language skills.

Benefits & Opportunities

• You can develop a career that fits you: your career development is personalized, taking in consideration your needs and goals from a short to long term.
• Interesting challenges ahead: you can work for several clients from different sectors of activity.
• Free training programs: Our training