Java Software Engineer, AWS | Trade Execution

HL TECH Poland; Biała Podlaska; On-site; PLN 153,000 - 218,000; Full time

Job summary

HL Tech Poland is building the next generation of trade execution platforms. You will contribute to backend services in Java/Spring Boot, design REST APIs and cloud-native workflows, and operate AWS-based infrastructure in a distributed Poland-UK engineering setup.

The role emphasises ownership, reliability, and collaboration across teams while maintaining high standards for security and testing.

Qualifications

• Strong Java/Spring Boot backend experience.
• Practical AWS experience in production environments.
• Experience designing and integrating REST APIs and microservices.
• Experience owning services in production, including monitoring and reliability improvements.
• Experience with distributed, event-driven or highly available systems.
• Understanding of observability practices (metrics, tracing, logging).
• Understanding of testing, maintainability and security practices.
• Experience with containers and Kubernetes.
• English (C1) and Polish (B2) proficiency.

Responsibilities

• Build and improve backend services using Java and Spring Boot.
• Design and implement REST APIs and multi-service flows.
• Develop and operate cloud services in AWS.
• Write secure, maintainable and testable code with automated tests.
• Support production systems and investigate incidents.
• Use metrics, tracing, logging and monitoring to improve reliability.
• Contribute to solution design and code reviews.
• Collaborate with Product and engineering teams in Poland and the UK.

Skills

Java & Spring Boot

AWS in production

REST APIs

Microservices

Event-driven

Observability

Testing

Kubernetes

English/Polish

Tools

Terraform

Hibernate

Node.js

TypeScript

Job description

HL Tech Poland is building the next generation of trade execution platforms. You will contribute to backend services in Java/Spring Boot, design REST APIs and cloud-native workflows, and operate AWS-based infrastructure in a distributed Poland-UK engineering setup.

The role emphasises ownership, reliability, and collaboration across teams while maintaining high standards for security and testing.