FrontEnd (React.js) Software Developer

About the role

Uniksystem, part of the international JOYN group, is expanding its Java Center of Excellence and looking for a FrontEnd Software Developer to join the team in Carnaxide, Lisbon. You will help deliver modern, user‑friendly web applications that simplify and automate business processes.

Key responsibilities

• Develop responsive front‑end features using React.js, JavaScript, HTML and CSS.
• Integrate with back‑end services and APIs, working with SQL Server, Oracle or MySQL databases.
• Utilise the Unik low‑code BPM platform to accelerate solution delivery.
• Collaborate in agile squads, contributing to design, code reviews and continuous improvement.

Required profile

• 2+ years of hands‑on experience with React.js.
• Solid understanding of web application architecture, distributed systems and APIs.
• Ability to lead technical discussions and deliver results.
• Fluent English (minimum B2) and a proactive, "make it happen" attitude.

Required skills

• React.js, JavaScript, HTML, CSS
• SQL Server, Oracle DB, MySQL
• Unik low‑code BPM platform
• Java, JMS, Spring Boot, Spring MVC, JSF, JSP, J2EE
• Object‑oriented design, architectural patterns
• Oracle PL/SQL, PHP, Mendix, Outsystems
• DevOps practices, Linux and Windows environments

What we offer

• Competitive remuneration aligned with experience.
• Flexible working hours and a work‑from‑home policy.
• Opportunities to work on fast‑growing projects alongside decision‑makers.
• Training, certifications and a vibrant office with lounge, gym, monthly barbecues and partner discounts.