Java Developer (AI-first mindset)

Timestamp; Porto; Presencial; EUR 40 000 - 65 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Flexibility in organizational routine

Training and certifications

Employee Support Program (in 5 areas,

Birthday and seniority gifts

Benefits portal with attractive offers

Resumo da oferta

Timestamp Group is seeking a Backend Developer to design, build and maintain backend services in Java using Quarkus, while applying AI-driven workflows. You will contribute to API design, testing and scalable microservices within a fast-paced environment.

You will collaborate with QA and product teams, review code, and push for reliable software delivery by leveraging AI tools to accelerate development and testing without compromising quality.

Qualificações

• 4+ years of hands-on experience in backend development.
• Experience with Java. (Quarkus is a plus).
• Experience using AI-assisted development tools as part of daily workflow.
• Experience designing APIs and Java-based microservices for production.
• Experience writing automated unit and integration tests.
• Strong English communication and collaborative skills.

Responsabilidades

• Design, build and maintain backend services and APIs using Java and Quarkus.
• Use AI tools as part of daily workflow to accelerate coding and testing.
• Address features, bug fixes, and refactors leveraging AI to move faster.
• Write automated tests (unit and integration) for backend services.
• Participate in code reviews to ensure quality and standards.
• Troubleshoot CI/CD pipelines and improve deployment speed with AI.
• Collaborate with backend engineers, QA and product to deliver reliable software.

Conhecimentos

Backend development

Java

Quarkus

AI-assisted development tools

API design

Automated testing

CI/CD

English communication

Problem-solving

Ferramentas

GitHub Copilot

GitLab Duo

Claude Code

Descrição da oferta de emprego

Timestamp Group aggregates several leading Portuguese IT solutions and services companies around the concepts of excellence and knowledge sharing. We are committed to technological leadership, based on the quality of our service and technological solutions, supported by continuous training and certification.

Backend Developer with experience in Java, Quarkus, and AI development

AI will be a core part of your daily workflow, using tools such as GitLab Duo and Claude Code to accelerate coding, testing, and code reviews. You will help the team deliver backend tasks faster and with higher quality, bringing an AI-first mindset to how we build, test, and release backend services.

You will…

• Design, build and maintain backend services and APIs using Java and Quarkus.
• Use AI tools such as GitLab Duo and Claude Code as part of your daily workflow to accelerate coding, testing, debugging and code review.
• Solve day-to-day backend team tasks - features, bug fixes, refactors, integrations - leveraging AI to move faster without compromising quality.
• Write automated tests (unit and integration) for backend services, using AI to speed up test creation and improve coverage.
• Take part in code reviews - both AI-assisted and with teammates - ensuring code quality and adherence to our engineering standards.
• Troubleshoot and resolve issues in CI/CD pipelines, using GitLab Duo to speed up root-cause analysis.
• Collaborate closely with other backend engineers, QA and product to deliver reliable, well-tested software.

Experience & Skills Required

• 4+ years of hands-on experience in backend development
• Experience with Java. (Quarkus is a plus)
• Practical experience using AI-assisted development tools such as GitHub Copilot, GitLab Duo, Claude Code, or similar as part of a daily engineering workflow.
• Experience designing and building APIs and Java-based microservices that run reliably at scale in production.
• Experience writing automated unit and integration tests for backend systems.
• Ability to understand the functional and business context of a feature before designing the technical solution.
• Curiosity and willingness to experiment with new AI tools and integrate them responsibly into day-to-day development practices.
• Comfortable working in a fast-moving environment where AI-assisted development practices are still evolving.
• Strong attention to detail, critical thinking, and problem-solving skills.
• Good verbal and written communication skills in English.
• Collaborative, adaptable, and able to manage multiple priorities effectively.

Nice to Have

• Experience with LLM-based integrations, Retrieval-Augmented Generation (RAG), or agent orchestration workflows.
• Familiarity with MCP (Model Context Protocol) or similar tool/context integrations that connect AI assistants to internal systems.
• Exposure to AI-native development practices beyond code completion, such as spec-driven development frameworks, custom prompt or skill libraries, and automation workflows.

Mindset

• Pragmatic - knows when to move fast and when to invest in more solid foundations.
• Structured thinker - reasons about a problem before diving into code.
• Autonomous - takes ownership of tasks and knows when to ask for help.
• AI-enabled - uses modern AI tools to boost speed and quality, without losing engineering judgment.
• Collaborative - works well with other engineers, QA and product, and enjoys building with context.

Employee Benefits

• Flexibility in organizational routine
• Training and certifications
• Employee Support Program (in 5 areas, including psychology)
• Birthday and seniority gifts
• Benefits portal with attractive offers