Back-end Developer & Analyst

Bull Bull

19h • Remote

About The Position

Bull is looking for a motivated and proactive Back-end Developer & Analyst to join our international R&D team. In this role, you will take ownership of the implementation, integration, and testing of backend and security solutions, contributing to next-generation cloud and HPC platforms. You will work in a dynamic, innovative environment, collaborating closely with technical and business stakeholders.

Requirements

• Bachelor’s degree in Computer Science, Software Engineering , or a related technical field.
• 2+ years of professional experience in backend development using Kotlin and/or Java .
• Strong experience with microservices architecture , REST APIs , and Swagger/OpenAPI .
• Experience working in Agile/Scrum development environments.
• Solid experience with CI/CD tools and automated pipelines, including Docker .
• Good understanding of backend system integration and testing.
• Fluent English (written and spoken).

Nice To Haves

• Ability to quickly adapt to new frameworks, technologies, or programming languages.
• Experience with Kubernetes , including cluster lifecycle management, networking, security, and storage.
• Experience with Spring / Spring Boot and cryptographic libraries.
• Knowledge of Linux system administration and troubleshooting distributed systems.
• Experience with digital identity technologies , including Self‑Sovereign Identity , OIDC , OAuth 2.0 , FIDO , and PKI certificates .
• Exposure to research and innovation projects (e.g. Horizon Europe / H2020 / FP7).
• Proactive, autonomous, and solution‑oriented mindset.
• Strong analytical and problem‑solving skills.
• Team‑oriented attitude with good communication skills.
• Willingness to learn and grow in an innovative R&D environment.

Responsibilities

• Design, develop, test, and maintain backend services using Kotlin / Java , microservices , and REST APIs .
• Participate in the full software development lifecycle within an Agile environment (Scrum).
• Contribute to analysis and definition of technical requirements , user stories, and solution design.
• Implement and integrate security and identity‑related solutions , including Proofs of Concept (PoCs).
• Work with CI/CD pipelines to support automated testing and deployment (Docker‑based environments).
• Collaborate with cross‑functional teams, including architects, DevOps, and product stakeholders.
• Ensure clean, maintainable, and well‑documented code following best practices.
• Support troubleshooting, performance optimization, and continuous improvement of backend systems.

Benefits

• Flexible work schedule half-day Fridays and an intensive summer workday supporting work life balance.
• Learning and Growth Opportunities to work with advanced technologies in an innovative and supportive R&D environment.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level