Senior Backend Architect - Java & Cloud

Branchspace; Kraków; On-site; PLN 180,000 - 240,000; Full time

Job summary

Branchspace in Kraków is seeking an ambitious Java Developer to join our engineering team. The role involves designing scalable backend systems, leading architectural decisions, and delivering backend solutions from design through production.

You will collaborate with Product and UX teams, mentor others, and drive modern DevOps practices, including CI/CD, Docker, and secure, reliable services running in cloud environments.

Qualifications

• Strong experience with Java, Spring Boot, RESTful APIs.
• Experience with MongoDB and data integrations across complex business systems.
• Familiarity with cloud platforms, containerization, and CI/CD practices.
• Knowledge of web security, reliability, and monitoring is beneficial.

Responsibilities

• Design scalable backend systems and contribute to architectural decisions across services and cloud infrastructure.
• Develop, review, and maintain backend software from design through production.
• Improve system reliability, performance, and security through monitoring, incident response, and continuous improvement.
• Drive testing strategies (unit, integration, end-to-end), CI/CD practices, and code quality gates.
• Collaborate with Product and UX teams to refine requirements and roadmap.
• Mentor engineers and evaluate emerging technologies and AI-assisted development practices.

Skills

Java

Spring Boot

RESTful APIs

MongoDB

Cloud

CI/CD

DevOps

Security

Tools

Docker

CI/CD

Job description

Branchspace in Kraków is seeking an ambitious Java Developer to join our engineering team. The role involves designing scalable backend systems, leading architectural decisions, and delivering backend solutions from design through production.

You will collaborate with Product and UX teams, mentor others, and drive modern DevOps practices, including CI/CD, Docker, and secure, reliable services running in cloud environments.