Luminor Group

Senior Software Engineer (Java)

Luminor Group
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6 days ago
Vilnius, LithuaniaSenior

Responsibilities

  • Design, develop, and maintain Java and Spring Boot backend services for payment capabilities.
  • Build secure APIs and event-driven integrations supporting the end-to-end customer payment journey.
  • Contribute to architecture and technical design decisions for distributed, scalable, and cloud-ready services.
  • Translate complex business needs into maintainable technical solutions and own them through design, implementation, and production support.
  • Improve automated testing, observability, production readiness, and code quality.
  • Review code and technical designs, share knowledge, and collaborate with product owners, architects, engineers, business stakeholders, and platform teams.
  • Use AI-assisted coding tools and engineering agents across design, development, testing, review, documentation, and troubleshooting while validating results and following security requirements.
  • Support modernization of payment capabilities across the Baltics.

Requirements

  • Strong hands-on experience with Java and Spring Boot.
  • Experience designing distributed, event-driven, or high-volume transactional systems.
  • Strong understanding of software architecture, microservices, APIs, and integration patterns.
  • Ability to evaluate options, explain trade-offs, and make pragmatic technical decisions.
  • Experience with Apache Kafka or comparable messaging technologies.
  • Practical cloud experience, preferably with AWS.
  • Experience with relational databases and transaction consistency.
  • Understanding of secure development, automated testing, CI/CD, and observability.
  • Strong practical experience with AI coding assistants and engineering agents, including validating generated results and following security requirements.
  • Strong ownership, accountability, communication, collaboration, and knowledge-sharing skills.
  • Fluent spoken and written English is required for Pan-Baltic work.

Benefits

  • Flexible working hours and hybrid work.
  • Ability to work from anywhere in the EU, Iceland, Switzerland, and the UK for up to 90 days per year.
  • Additional vacation weeks after one year with the company.
  • Additional volunteer time off.
  • Up to 30 fully paid calendar days annually for military training.
  • Health insurance after the first three months in all three Baltic states, plus health days for sickness absence without a doctor’s note.
  • Internal and external training, LinkedIn Learning, workshops, conferences, and online training.
  • Special offers and pricing on Luminor products and services.
  • The application deadline is October 1, and candidates are primarily expected to be located within the Baltics.

Tech Stack

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Luminor Group

About Luminor Group

1,001-5,000 employees
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