Senior Backend Engineer: Scalable Java Systems | Remote

exadelinc; Poland; Hybrid; PLN 180,000 - 320,000; Full time

Benefits offered by this job

International projects

In-office, hybrid, or remote flexibil

Medical healthcare

Learning & reimbursement

Well-being program

Team events & local benefits

Top-tier equipment provision

Job summary

Exadel is seeking a Senior Backend Engineer to design, implement, and optimize scalable backend services for a global transportation technology project. You will drive improvements across architecture, performance, and reliability while working with Java, PHP, and JVM-based frameworks.

The role requires strong Java/JVM experience (Micronaut/Spring Boot), PHP familiarity, and deep knowledge of Kubernetes, AWS, Kafka, and distributed systems.

Qualifications

• Solid backend development experience with scalable services.
• Expertise in Java/JVM frameworks such as Micronaut or Spring Boot.
• Professional PHP experience and willingness to work in a mixed Java/PHP environment.
• Experience with Kubernetes, AWS, and distributed messaging systems like Kafka.
• Strong understanding of distributed systems, scalability, reliability, and software architecture.
• Experience building high-volume, reliable backend services.

Responsibilities

• Design, develop, and maintain scalable backend services with high performance.
• Build and evolve the Search platform handling millions of requests across 40+ countries.
• Design components with scalability, maintainability, and observability in mind.
• Solve distributed systems challenges like graph-based search, caching, and memory optimization.
• Migrate Search services from PHP to Java to improve throughput and caching.
• Contribute to architecture decisions and drive technical improvements.
• Ensure CI/CD processes deliver high-quality, reliable releases.
• Write SOLID, maintainable, testable code and collaborate across teams.
• Lead adoption of better engineering practices and mentor teammates.
• Own backend solutions from concept through production.

Skills

Java

Spring Boot

Micronaut

PHP

Kubernetes

AWS

Kafka

OpenSearch

Redis

Terraform

Unit Testing

CI/CD

Tools

GitLab CI/CD

MySQL

Terraform

Job description

Exadel is seeking a Senior Backend Engineer to design, implement, and optimize scalable backend services for a global transportation technology project. You will drive improvements across architecture, performance, and reliability while working with Java, PHP, and JVM-based frameworks.

The role requires strong Java/JVM experience (Micronaut/Spring Boot), PHP familiarity, and deep knowledge of Kubernetes, AWS, Kafka, and distributed systems.