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Java Engineer

Critical Software
CRITICAL Software's vision is to make the world safer through technology.

Job details

  • Full-time
  • map markerPorto, PT
  • cardRequires Work Permit
    Requires that you're a citizen or have a valid work permit / visa sponsorship to work in the country in which this position is based.
  • routeSenior
  • routePortuguese
    Preferred spoken language

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We provide systems and software services for safety, mission and business-critical applications, helping our clients to meet the most demanding standards for performance and reliability.

We were founded in 1998, and our very first client was none other than NASA. Today, we work in many different markets - including aerospace, energy, transport, maritime and defense - and we have offices in Portugal (Coimbra, Lisbon, Porto, Tomar, Viseu and Vila Real), the UK (Southampton), Germany (Munich) and the USA (California).

We are now looking for a Java Engineer.


  • Deliver high quality, reusable and testable software components for highly scalable backend services using Java technology;
  • Support the Product Owner with architectural insights and technical knowledge;
  • Be part of the team planning and improvement using agile methodologies.

Main requirements

  • At least 5 years of experience using Java, Spring, Hibernate, MySQL, Maven, Git and Java Application Servers
  • Knowledgeable with web architectures and services (HTTP, SOA, REST, JSON, etc.)
  • Familiar with non-relational database concepts
  • Experienced with highly scalable and performant backend services
  • Experienced in working autonomously within and agile environment with automated testing and continuous integration
  • Excellent at solving complex problems
  • Fluent in English (both written and spoken)

Nice to have

  • Familiar with IaaS, SaaS and Paas concepts
  • SCRUM and/or Kanban wise


  • Health plan
  • Mobile phone with minutes and data packages
  • Yearly bonus
  • Corporate parties and events

Apply now

Sign up to apply

Or sign up to refer and earn a reward of €300