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Gramian Consulting Group

Senior Java Backend Engineer (Spring Boot / Microservices)

Gramian Consulting Group Poland · $125K–$229K/yr

IT Services and IT Consulting · 2-10 employees

9 h ago
Remote java Senior (5-10 yrs) Contractor Poland
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About the role

Design, develop, and maintain scalable Java backend systems using Spring Boot and microservices architecture. Collaborate with distributed teams to optimize backend performance, reliability, and security for AI training workflows.

What they look for

Java Spring Boot Microservices REST APIs Backend Architecture Software Engineering Scalability Performance Optimization Debugging Code Reviews System Design Data Structures

Requirements

Requires strong professional experience in Java backend development and advanced hands-on expertise with Spring Boot and microservices. Candidates must demonstrate proficiency in building REST APIs and possess a solid understanding of software engineering best practices.

Full description

About Us

Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high-performing teams by matching them with professionals who truly fit their needs.

Role Overview

Our client is supporting the development of advanced AI systems by incorporating high-quality software engineering expertise into training and evaluation workflows.

We are looking for experienced Java backend engineers with strong hands-on expertise in Spring Boot, microservices, REST APIs, and scalable backend architecture. The role involves building and reviewing production-grade backend systems, improving reliability and performance, and contributing technically rigorous software outputs that help train next-generation AI systems. No prior AI experience is required.

CONTRACT: Contractor assignment

COMMITMENT: Full-time

LOCATIONS: Remote

NOTES: Compensation ranges from $60–$110 per hour.

Responsibilities

  • Design, develop, and maintain scalable Java backend systems.
  • Build production-grade services using Spring Boot.
  • Architect and implement robust microservices for complex application requirements.
  • Develop and maintain REST APIs and backend integrations.
  • Review technical specifications and translate them into reliable implementations.
  • Troubleshoot, debug, and optimize backend services for performance and stability.
  • Participate in code reviews and provide technically grounded feedback.
  • Improve backend reliability, security, maintainability, and scalability.
  • Document technical decisions, architecture, and implementation details clearly.
  • Collaborate with distributed engineering teams on complex backend development tasks.
  • Strong professional experience with Java backend development.
  • Advanced hands-on experience with Spring Boot.
  • Strong knowledge of microservices architecture and design principles.
  • Experience designing and building REST APIs.
  • Proven ability to write clean, maintainable, and efficient production code.
  • Strong understanding of backend architecture, data structures, and software engineering best practices.
  • Experience troubleshooting and optimizing backend applications.
  • Professional written and spoken English.

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