13 days ago
Kraków, PolandMid Level / Senior
H1B Sponsor
Responsibilities
- Design, develop, and maintain scalable backend services using Go (Golang).
- Build and optimize high-performance, reliable, and secure systems.
- Work with SQL databases (MySQL), focusing on performance tuning and query optimization.
- Contribute to system architecture and technical design decisions.
- Develop and maintain APIs (RESTful and/or GraphQL).
- Collaborate with cross-functional teams to deliver end-to-end solutions.
- Improve system observability, reliability, and performance.
- Leverage AI-assisted development tools to enhance productivity and code quality.
Requirements
- Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
- 3+ years of backend development experience, with strong professional experience in Go (Golang) as a primary language.
- Experience with at least one additional backend language (e.g., Java, Python, C/C++, Ruby, Scala).
- Strong knowledge of SQL databases (preferably MySQL), including query optimization.
- Solid understanding of data structures, algorithms, and design patterns.
- Experience working in Unix/Linux environments.
- Experience with AI-assisted development tools (e.g., Claude Code, GitHub Copilot).