Lead Software Engineer (Kotlin/Java)

Posted 6 Days Ago
Be an Early Applicant
Vilnius, Vilniaus miesto savivaldybė, Vilniaus apskritis, LTU
Hybrid
5K-8K Annually
Expert/Leader
Fintech • Financial Services
The Role
Lead the design, development, and delivery of Kotlin-based backend microservices for banking systems. Provide technical leadership, make architecture decisions, mentor engineers, establish coding and quality standards, troubleshoot production issues, and improve security, performance, scalability, resilience, and maintainability. Collaborate with product managers, architects, and engineering teams while supporting automated testing, CI/CD, observability, and DevOps practices.
Summary Generated by Built In
Join our team as a Lead Software Engineer!

Yes, you can! That's our attitude towards our work, ambitions, ideas, and relationships. We at Luminor believe that anyone has the potential to achieve big things and encourage everyone to achieve them, professionally and personally.

Whoever you are and whatever your role is, with Luminor, you will get a once-in-a-lifetime opportunity to build a local banking champion.

We are seeking an experienced Lead Software Engineer to drive the design, implementation, and evolution of a Kotlin-based microservice architecture for our banking systems. In this role, you will provide technical leadership, guide engineering teams, and ensure the delivery of secure, scalable, and high-performing backend solutions.

Join the new Bloom Mobile App Onboarding team and play a key role in shaping the future of our banking customer experience!

How You Will Make an Impact:
  • Lead the technical design, development, and delivery of backend services and platforms.

  • Drive architecture decisions in collaboration with architects and engineering teams.

  • Provide technical leadership and mentorship through code reviews, design reviews, and day-to-day engineering guidance.

  • Define and promote engineering best practices, coding standards, and quality guidelines.

  • Deliver new features and enhancements that meet business, user, performance, and reliability requirements.

  • Troubleshoot complex production issues, identify root causes, and implement sustainable solutions.

  • Ensure high software quality through automated testing, code reviews, and continuous integration practices.

  • Collaborate closely with product managers, architects, and engineering teams to translate business requirements into technical solutions.

  • Drive improvements in performance, security, scalability, and maintainability across backend services.

  • Identify technical risks, propose mitigation strategies, and proactively address architectural and operational challenges.

  • Support the growth and development of engineers through coaching, mentoring, and knowledge sharing.

What Makes You a Great Fit:
  • 10+ years of professional experience in backend software engineering.

  • Expert-level proficiency in Kotlin; experience with Java is highly desirable.

  • Strong experience designing and building microservice architectures.

  • Strong proficiency with Quarkus; experience with Spring Framework is a plus.

  • Experience with event-driven architectures and message brokers, such as Kafka.

  • Strong understanding of distributed systems, scalability, resilience, and observability.

  • Experience with CI/CD pipelines, automated testing, and version control systems (Git).

  • Strong knowledge of performance optimization, secure coding practices, and application security.

  • Experience working in Agile environments and applying DevOps practices.

  • Strong knowledge of core AWS services and K8s.

  • Proven experience leading technical initiatives and influencing architectural decisions across teams.

  • Experience in banking, fintech, or other highly regulated enterprise environments is a plus.

  • Fluent English is required in spoken and written communication due to working on Pan-Baltic level.

Why You Will Love Working Here:
  • Flexibility. Flexible working hours, Hybrid work, and the possibility to work from anywhere in the EU, Iceland, Switzerland, and the UK (in total 90 days per year)

  • International teams. Teams that go outside Pan-Baltic borders, where people value challenging work together with good humor and having fun

  • Culture. You’ll be joining a team where things move fast, ideas flow freely, and change is part of the everyday. It’s a dynamic environment that keeps you learning, growing, and never bored

  • More vacation. Additional weeks of vacation are available to all employees who have been in the company for 1 year or more

  • Volunteer time off. We care about giving back to society, therefore, you will get additional days off for volunteering purposes

  • Paid leave. We are proud of our employees who are participating in military training. Therefore, Luminor offers 30 fully paid calendar days for military training every year

  • Health benefits. A competitive benefits package in addition to your salary that includes health insurance after the first 3 months pass in all three Baltic states, as well as Health days in case of your absence due to sickness without a doctor's note needed

  • Wellbeing. Access to tools and resources that help you feel good and be productive at work and in life

  • Professional growth. Internal and external training programs, LinkedIn learning, workshops, conferences, online training, etc

  • Special Offer for Luminor products & services. Enjoy special offers & pricing for products and services provided by Luminor

  • Gross salary. 4800–7600 EUR/month, which is to be determined depending on your level of experience and competencies

The application deadline is the 1st of October.

We are looking for a candidate primarily already located within the Baltics. Please apply with your CV in English and PDF format!

Skills Required

  • 10+ years of professional experience in backend software engineering
  • Expert-level proficiency in Kotlin
  • Experience with Java
  • Experience designing and building microservice architectures
  • Strong proficiency with Quarkus
  • Experience with Spring Framework
  • Experience with event-driven architectures and message brokers such as Kafka
  • Strong understanding of distributed systems, scalability, resilience, and observability
  • Experience with CI/CD pipelines, automated testing, and Git
  • Knowledge of performance optimization, secure coding practices, and application security
  • Experience working in Agile environments and applying DevOps practices
  • Strong knowledge of core AWS services and Kubernetes
  • Experience leading technical initiatives and influencing architectural decisions across teams
  • Experience in banking, fintech, or highly regulated enterprise environments
  • Fluent English in spoken and written communication
Am I A Good Fit?
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The Company
HQ: Tallinn
2,300 Employees
Year Founded: 2017

What We Do

Luminor is a leading independent bank in the Baltics and the third-largest provider of financial services in the region, offering services such as term deposits, savings accounts, and loans.

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