Dublin, Ireland Hybrid

Sonalake is hiring a Backend Engineer (Java)

About the Role

We're seeking a Backend Engineer to build and refine scalable server-side applications using Java and related technologies. In this role, you'll work within cross-functional teams to deliver robust software solutions across industries like telecom billing, financial services, and digital advertising.

What You'll Do

  • Design and implement efficient, maintainable backend services using Java, Kotlin, and frameworks such as Spring, Quarkus, or Micronaut
  • Write clear, well-documented code that supports long-term system reliability
  • Collaborate with developers, designers, and domain experts to solve complex technical challenges
  • Contribute to open source initiatives and internal innovation projects
  • Help refine development workflows, tooling, and engineering best practices

What We're Looking For

  • At least three years of hands-on software development experience
  • Proven work with Java-based business systems and frameworks including Spring, Hibernate, or JPA
  • Familiarity with DevOps tools like Jenkins, Docker, and Git
  • Strong command-line proficiency on Linux with scripting experience
  • Cloud experience, particularly with Amazon Web Services
  • Experience operating production-grade systems in team environments
  • Excellent written and spoken English communication skills
  • Ability to work independently while contributing to a knowledge-sharing culture
  • Residency in Slovakia, Poland, or Hungary

Preferred Experience

  • Working knowledge of Camunda 7

Work Environment

This is a remote-first role with the option to work fully remotely, hybrid, or from physical locations in Dublin, Poznan, or Bratislava. We support flexible arrangements and prioritize work-life balance.

What We Offer

  • Indefinite employment contracts
  • Annual training budget covering courses, books, and conferences
  • Opportunities for professional growth through coaching and mentorship
  • A flat, collaborative structure with open communication
  • Freedom to explore emerging technologies and lead internal innovation projects
  • Inclusion in a team of experienced engineers and emerging talent
Required Skills
JavaKotlinSpringQuarkusMicronautHibernateJPAJenkinsDockerGitLogging FrameworksTelemetry FrameworksMicroservicesREST APIsCI/CD JavaKotlinSpringQuarkusMicronautHibernateJPAJenkinsDockerGitLogging FrameworksTelemetry FrameworksMicroservicesREST APIsCI/CD
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About company
Sonalake

Sonalake is a trusted partner for global technology brands, telcos and scale-up disruptors. We operate two business areas: Software Services and Telecom Solutions.

Our Software Services accelerate product roadmaps for clients in growth sectors, including FinTech, TravelTech, Security and Life Sciences. Our Telecom Solutions transform operations for communication service providers through AI, automation & analytics.

We focus on collaboration and culture, building trust and delivering on your business case with contemporary technology and agile engineering practices.

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Job Details
Category backend
Posted 3 months ago