Java Software Engineer

Java Software Engineer
Lisboa
Lisboa, Lisboa, Portugal

Senior Java Software Engineer

Location: Lisbon, Hybrid

Contract: 12-month freelance contract, 40h/week

Start date: January

Citizenship: EU citizen

Description of Responsibilities

• Develop, maintain, and operate backend software applications with a strong focus on Java across multiple versions (including legacy and modern)
• Design, implement, and optimise RESTful APIs, microservices, and
  - tier backend architectures
• Analyse business, functional, and technical requirements and translate them into scalable backend designs and technical solutions
• Contribute to integration work including system components,
  - based environments, and
  - built backend services
• Perform code reviews, debugging, performance optimisation, and participate in unit, integration, and acceptance testing activities
• Create and maintain technical documentation, design artefacts, and development standards in coordination with architects and IT operations
• Estimate effort, contribute to planning, and provide technical guidance during the full software development lifecycle
• Participate in technical discussions, sprint activities, and meetings with stakeholders, including developers, project managers, and architects
• Set up and maintain backend development environments and contribute to consistent development practices
• Produce periodic reports, progress updates, and ensure deliverables meet quality expectations and EU standards

Experience & Skills

• Minimum 7 years of professional backend software development experience, with strong
  - on expertise across multiple Java versions (including EJBs and modern Java)
• Proven experience designing and developing backend services, APIs, microservices, and
  - tier architectures
• Strong understanding of
  - oriented programming, design patterns, and backend engineering best practices
• Experience with RESTful API development and integration, plus solid version control experience (Git)
• Finnish bilingual speaker (mandatory) and advanced level of English; must be an EU citizen
• Strong understanding of common SDLC methodologies (Agile/Scrum/Waterfall)
• Ability to work independently in a
  - site remote model and collaborate effectively with international teams