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Java / Kotlin Developer (SEO Apps)
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Offer summary

(Summary generated by AI based on the full job description)

The project involves backend microservices development in Kotlin/JVM supporting SEO features on a marketplace with tens of millions of users. Key technologies include Kotlin, Java 17, Scala, Spark, GCP, MongoDB. Responsibilities cover microservices development and maintenance, big data task optimization, sitemap generation, and collaboration with the SEO team. Work includes stakeholder communication and production issue diagnosis. Benefits include private medical care, training budget, sports benefits.

newyou can start ASAP

Java / Kotlin Developer (SEO Apps)

Company: B3 CONSULTING POLAND sp. z o.o.

from: 22 June 2026
to: 22 July 2026
salary not specifiedB2B contract (full-time)
Salary details
basic salary
Offer parameters
level:mid • senior
working mode:remote
Warszawa, Śródmieście
Warszawa, ŚródmieścieAleje Jerozolimskie 44View on map

Requirements

Expected technologies

Java
Kotlin
MongoDB
Scala
Spark
Google Cloud Platform

Optional technologies

Spring Framework

Our requirements

  • Kotlin (JVM) + Java 17 - ability to work independently in the JVM ecosystem
  • MongoDB
  • Scala + Spark
  • GCP (Google Cloud Platform)
  • Production issue diagnosis - monitoring analysis, identifying bottlenecks and their root causes
  • Collaboration with business stakeholders - active participation in requirements gathering, daily communication
  • Polish (native) + English (B2+)
  • Ability to perform work in Poland (citizenship, residence permit, visa, etc.)

Optional

  • Spring Framework
  • SEO domain knowledge

Your responsibilities

  • Backend microservices development - designing and maintaining Kotlin/JVM microservices supporting SEO functionalities on a marketplace platform (listings, offer pages, search results, archives) at a scale of tens of millions of users
  • Big data & trend prediction - writing and optimising Spark/Scala jobs on large datasets (terabytes) in a GCP environment; participation in a search trend prediction project
  • SEO systems & internal linking development - sitemap generation, development of the internal link exchange system, optimisation of pages for bots and AI agents, daily collaboration with the business SEO team

About the project

Looking for your next challenge as a Java/Kotlin Developer? We may have the right opportunity for you.

This is how we organize our work

This is how we work

in houseyou focus on a single project at a timeyou have influence on the technological solutions appliedscrum
Company

Development opportunities we offer

  • substantive support from technological leaders

What we offer

  • Work in a Scandinavian culture built on logic, trust, and open dialogue.
  • Health and sports benefits tailored to your needs.
  • Speed Coaching – short sessions designed to provide new perspectives and solutions.
  • Sports training, an internal team, and opportunities to take part in competitions.

Benefits

  • sharing the costs of sports activities
  • private medical care
  • sharing the costs of foreign language classes
  • sharing the costs of professional training & courses
  • flexible working time
  • integration events
  • corporate sports team
  • corporate library
  • video games at work
  • coffee / tea
  • leisure zone
  • christmas gifts
  • birthday celebration
  • employee referral program
  • charity initiatives

B3 CONSULTING POLAND sp. z o.o.

At B3, we start with people and their experience. We match projects to your skills and professional growth path. Our consultants work across a wide range of industries and technologies, delivering IT projects both in Poland and internationally. This allows you to build your career in a deliberate way - not by chance.
We are part of an international organization listed on Nasdaq Stockholm, operating in 11 countries. In Poland, we operate with full autonomy. We choose our technologies, processes, and ways of working while maintaining the highest professional standards.
Java / Kotlin Developer (SEO Apps)
I apply to:
B3 CONSULTING POLAND sp. z o.o.
Warszawa, Śródmieście
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