Lisboa

Full Stack Developer – Java & React

IT, Dados & TelecomEngenhariaITTempo inteiroMédio

€25k–€30k / ano

Back to Open Positions Full Stack Developer – Java & React Java | React | Microservices | Keycloak & Okta | Event-Driven Architecture We are looking for an experienced Full Stack Developer – Java & React to join a technology project in Lisbon. This is a hybrid role requiring three days per week on-site in Lisbon, and candidates must be based in Portugal. The role is suited to developers with 4+ years of experience building scalable applications and working across backend and frontend technologies. You will contribute to the design and delivery of Java microservices and modern web applications, while also supporting architecture, identity and access management, API development, event-driven systems, code quality, deployments, and knowledge sharing within the squad. 4+ years Full Time Hybrid Lisbon (Portugal) €25,000–€30,000 gross per year Salary Range* Job No. 937

Key Responsibilities

Design and implement scalable Java microservices supporting Checkout, MyAccount, and ODR Processing features. Contribute across the full feature lifecycle, from architecture discussions and implementation through testing, code review, and deployment. Build and maintain modern frontend applications using React. Integrate and configure Keycloak and Okta identity and access management flows. Work with OIDC, RBAC, and token customisation within authentication and authorisation solutions. Build and maintain RESTful and GraphQL APIs. Produce and maintain OpenAPI documentation for APIs. Implement event-driven integration patterns using AWS SQS and Solace messaging. Apply code quality and security standards using tools such as SonarQube and Snyk. Participate in code reviews and contribute to engineering best practices. Mentor junior engineers and support knowledge transfer within the squad. Participate in architectural decisions and contribute to the client’s engineering standards. Collaborate closely with squad members and client stakeholders throughout delivery.

Knowledge, Skills and Experience

4+ years of professional experience in Java and React development or equivalent full-stack roles. Strong experience developing scalable Java-based backend services and microservices. Experience developing modern web applications using React. Experience designing and consuming RESTful APIs. Experience working with GraphQL APIs. Knowledge of identity and access management technologies such as Keycloak and Okta. Understanding of OIDC, RBAC, and token-based authentication and authorisation. Experience with event-driven architecture and messaging technologies. Familiarity with AWS SQS and Solace. Experience applying code quality and application security practices. Familiarity with SonarQube and Snyk. Experience participating in architecture discussions, code reviews, testing, and deployments. Ability to mentor junior engineers and contribute to knowledge sharing. Strong collaboration skills and ability to work effectively within multidisciplinary squads.

What We Offer

Hybrid working model based in Lisbon. The opportunity to contribute across the full software delivery lifecycle. Exposure to microservices, identity and access management, event-driven architectures, and modern engineering practices.

Salary & Benefits

Gross annual salary: €25,000–€30,000*, depending on experience and suitability for the role. Meal allowance. Flexible benefits package. Extra day off on your birthday. One additional day off on either 24 December or 31 December. posted October 26, 2026 Salary ranges shown are indicative. Final compensation is determined by experience, seniority, profile fit, and the scope of responsibilities involved. Apply to this position Take the next step in your career— apply now and be part of something extraordinary . Fields marked by an asterisk () are required to submit this form Name* Email* Phone number Please include your country code. Resume* Please upload your resume in PDF, DOC, or DOCX format, with a maximum file size of 5MB. Why would you like to work with us? Please confirm your current country and city/region of residence* Based on the location requirements mentioned in the job advert, please select the option that best applies to you:* Select I meet the requirement I can commute I would relocate I don't meet the requirement I'm not sure I agree to the Terms and Conditions [hidden page-title default:"[_post_title] "] This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.