Negotiable
Undetermined
Remote
Poland, Eastern Europe
Summary: The role is for a JAVA Developer/Engineer with expertise in Quarkus, focused on supporting an international client in migrating APIs from Mulesoft to JAVA as part of a legacy systems transition to microservices. The position is remote and requires a candidate with significant experience in JAVA development and team leadership. The project duration is 3 months with an option to extend, and the start date is immediate.
Key Responsibilities:
- Low level design
- Development and migration of APIs from Mulesoft to JAVA
- Technical development based on requirements
- Building and consuming REST APIs, MicroProfile REST Client or similar
- Implementing HTTP client patterns, error handling, retry strategies
- Act as lead JAVA Engineer
Key Skills:
- More than 5 years of experience in JAVA Development
- Project experience with Core Java version 17 upwards, preferably experience with JAVA 25
- Strong project experience with Quarkus 3.x
- Strong project experience with Apache Kafka
- Minimum of 2 years of project experience with event-driven / message-driven architectures
- Experience in migrating legacy systems (ESB, monolith) to microservices - preferred
- Experience with SQL / Relational Databases - preferably PostgreSQL
- Experience with building and consuming REST APIs, MicroProfile REST Client
- Preferred: Experience as team lead or lead Engineer JAVA
- Experience in the manufacturing industry - preferred
- Fluency in English
Salary (Rate): undetermined
City: undetermined
Country: Poland
Working Arrangements: remote
IR35 Status: undetermined
Seniority Level: undetermined
Industry: IT
JAVA Developer/Engineer with Quarkus - 3+ months - Remote - Start ASAP
For our international client, we are looking for an experienced JAVA Developer/Engineer with experience in Quarkus.
Your main task is to support the client in the migration of APIs from Mulesoft to JAVA as part of a migration of legacy systems (ESB, monolith) to microservices.
Team lead or experience as a lead Engineer is preferred.
Tasks:
* Low level design
* Development and migration of APIs from Mulesoft to JAVA
* Technical development based on requirements
* Building and consuming REST APIs, MicroProfile REST Client or similar
* HTTP client patterns, error handling, retry strategies
Requirements:
* More than 5 years of experience in JAVA Development
* Project experience with Core Java version 17 upwards, preferably experience with JAVA 25
* Strong project experience with Quarkus 3.x
* Strong project experience with Apache Kafka
* Minimum of 2 years of project experience with event-driven / message-driven architectures
* Experience in migrating legacy systems (ESB, monolith) to microservices - preferred
* Experience with SQL / Relational Databases - preferably PostgreSQL
* Experience with building and consuming REST APIs, MicroProfile REST Client
* Experience in the manufacturing industry - preferred
* Fluency in English
Project details:
* Start: ASAP
* Duration: 3 months (+ option to extend)
* Workload: 5 days per week
* Location: 100% remote (European based only)
* Languages: Fluency in English
Telephone interview slots with our client can be arranged at short notice with a decision immediately thereafter.
Reference
CR/133550_1775055690
Date
1 Apr 2026