Senior Backend Engineer (Java)

16 000 - 21 000 PLNGross per month - Permanent

Senior Backend Engineer (Java)

Java

Krysiewicza 2, Poznań

Sonalake

16 000 - 21 000 PLN
Gross per month - Permanent
Full-time
Permanent
Senior
Remote

Tech stack

    English

    B2

    Java

    advanced

    Spring

    advanced

    AWS

    advanced

    Docker

    regular

    Jenkins

    regular

    BPMN

    nice to have

Job description

Sonalake is a software partnering company that helps our clients realise their product roadmaps. Product design and engineering are at the heart of our business. Our engineering teams work with clients right across the stack; UX, UI design, frontend, backend, analytics, infrastructure, operations - and everything else that goes into delivering great products.

We thrive on variety and are highly adaptable. Our teams are exposed to domains as varied as telecom billing, ad tech, securities-based lending, travel tech analytics, and many more.


Innovation is central to our mission; anticipating future client needs, analysing emerging technologies and developing new products and services.


We are now seeking to grow our backend team capability to support the development of our products. That’s where you come in!


You will

  • Develop rock solid efficient server-side applications

  • Write clean, readable, well-commented, maintainable code

  • Work as part of a multi-disciplinary team with designers and other developers

  • Contribute to product innovation and our open source projects

  • Help evolve and improve our development standards, tooling, and processes


You may be a fit for this role if you

  • Have 5+ years hands-on software engineering experience

  • Have developed business applications using some of the following technologies

    • Java, Kotlin

    • Spring, Quarkus, Micronaut

    • Hibernate, JPA, logging and telemetry frameworks

  • Worked with Jenkins, Docker, Git and are very comfortable working from the Linux command line and with scripting languages

  • Have experience designing for and working with Amazon Web Services

  • Worked on teams that have shipped and operated critical software systems

  • Take pride in working on projects to successful completion involving a wide variety of technologies and systems

  • Thrive in a collaborative environment involving different stakeholders and subject matter experts

  • Are a great communicator in English - both written and spoken

  • Thrive on a high level of autonomy and responsibility within a knowledge sharing culture

  • Nice to Have - experience with Camunda or other BPMN tools


What's in it for you?

  • Remote-first approach with many team-building activities. You can work from our offices in Dublin, Poznan or Bratislava, or work on a fully remote or hybrid basis. We believe in a healthy work-life balance

  • Every Sonalaker gets a training budget and paid training days every year to upskill. This covers courses, training, books or conferences

  • We’ve a flat organisational structure with an emphasis on open, honest communication. There are no siloes, no hierarchies and no barriers

  • We focus on innovation: we run projects to evaluate new frameworks, create tools for internal use, contribute to the open source community and research new ways to use existing products in new problem domains

  • Indefinite period employment contract


We take pride in being a people-oriented company. Openness and opportunity are really important to us. We build teams tha

Published: 26.08.2025

Meet the company

Sonalake

Your software partners. Using cutting-edge analytics, automation, and visualisation technologies, we help organizations innovate. The result is greater intelligence, insight, efficiency, and opportunity for business domains.

Company profile
Office location