Java Kotlin Developer (e-commerce)
First seen by Alion on Oct 28, 2026.
Development of an e-commerce project for a client that is one of the largest companies in this sector in the country.
Our expectations
Min. 4 years of experience as a Software Developer
Advanced proficiency in Java and Kotlin, alongside hands-on experience with the Spring and Micronaut frameworks
Degree in a technical field (STEM discipline preferred)
Deep understanding of JVM execution, memory management, and performance tuning
Proven experience with search technologies, specifically Apache Solr and Elasticsearch, preferably within the Adtech domain
Solid background in microservices architecture and working knowledge of NoSQL databases (e.g., MongoDB)
Experience with Docker and/or Kubernetes, coupled with strong adherence to TDD, unit testing, and integration testing practices
Demonstrated experience in Agile/Scrum environments
English proficiency at a minimum B2 level
Willingness to occasionally visit the client's office in Warsaw, subject to prior arrangement
Main responsibilities
Software development within a development team using agile methodology
Participation in team meetings and collaborative creation and execution of assigned tasks
Active involvement in delivering increasingly better programming solutions throughout the full project lifecycle — code reviews, testing others’ changes, deployment, maintaining cloud infrastructure, and creating documentation
Tech stack
- Java
- Kotlin
- Spring
- Solr
- Micronaut
- Elasticsearch
- NoSQL
- Docker/Kubernetes
- JVM
- English