Backend Developer - Java & Kotlin

Java

N/A, Warszawa

Hirexa

20 000 - 23 000PLN

Gross per month - Permanent

Full-time

Permanent

Mid

Hybrid

Tech stack

English

C1

Java

master

Kotlin

master

Amazon AWS

advanced

Grafana

advanced

Prometheus

advanced

ELK Stack

advanced

Docker

advanced

Kubernetes

advanced

Kafka

regular

Spring Boot

junior

Job description

Job Title: Backend Developer (Java & Kotlin)

Location: Warsaw, Poland - HYBRID

Employment Type: Permanent

About Hirexa Solutions:

Hirexa Solutions is a leading player in the recruitment ecosystem across the United States, United Kingdom, Europe, and India. As the fastest-growing next-generation provider of technology talent, we empower our clients to become resourceful, achieve higher productivity, adopt agile structures, and effectively execute project deliverables.

Envisioned and co-founded by veterans of the Information Technology industry, our mission is to make recruitment efficient, flawless, and cost-effective. Our unwavering commitment to strategic investments in intelligent technology underscores our passion for people and our dedication to helping organizations realize their true potential.

Position Overview:

For one of our partners, we are seeking a Backend Developer who will be responsible for Backend Developer with JAVA & KOTLIN. The ideal candidate will possess the necessary skills and experience to contribute to the success of our partner organization.

Our Stack

● Microservices architecture

● Java and Kotlin with Spring Boot Reactive

● AWS (Lambda, SQS, S3, DynamoDB)

● Kafka

● Docker, Kubernetes

● Grafana, Prometheus, ELK stack

● Anything needed to achieve our goals

What you will bring:

● Excellent software engineering skills in Java or Kotlin for backend services

● Work closely with cross-functional teams such as Development, Operations, and Product Management to ensure seamless integration of new features and services with a focus on reliability, scalability, and performance

● Effective communication skills, both verbal and written, with the ability to collaborate with multidisciplinary teams and articulate complex technical concepts to non-technical stakeholders.

● A strong focus on testing

● An understanding of Object Oriented Design and standard design patterns

● Strong experience of multi-threaded, 3-tier architectures, web services, caching, and dealing with event-driven pipelines

● Willingness to learn and use different technologies/programming languages

● Experience working with public cloud. AWS would be advantageous

● Experience with SQL and NoSQL databases

● Practical experience of deploying code in a modern programming environment using tools such as Docker and Kubernetes

How to Apply:

If you are interested in this opportunity, please submit your resume. We look forward to hearing from you!

Published: 13.08.2025

Meet the company

Hirexa

Hirexa Solutions is a global leader in Staffing and Professional Services, with over 9 years of expertise in creating opportunities and connecting talent with success. With a presence in London, Netherlands, Germany, Poland, the USA and India and expanding to Spain and Bulgaria, we deliver tailored hiring solutions, including Permanent Staffing, Contract-to-Hire, and Global Mobility.Our work culture thrives on diversity, collaboration, and innovation, empowering our employees to deliver exceptional results. We've successfully provided 5,000+ jobs, creating a significant social impact.

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