**Key Responsibilities** - **API Development:** Implement and optimize high-performance HTTP and WebSocket APIs for real-time communication. - **Call Control Logic:** Develop and manage sophisticated call handling features, including **TRANSFER**, **BRIDGE**, and automated routing. - **System Governance:** Design and maintain robust mechanisms for rate-limiting, blacklisting, and performance tracking. - **Performance Optimization:** Ensure ultra-low latency and high resilience in event delivery to maintain system stability. - **Integration:** Facilitate the communication between the core telephony engine and the end-user application layer.

• Lead backend architecture for Wiki, Pages, Markdown, and text editor capabilities used across GitLab. • Design and build AI agents that support planning and knowledge management workflows. • Architect MCP integrations that connect GitLab GraphQL APIs with external AI platforms and tools. • Drive improvements in reliability and performance across application code, PostgreSQL queries, Redis usage, and background jobs. • Develop and evolve GraphQL APIs that are clear for frontend engineers and support scalable product experiences. • Collaborate with frontend engineers, Product, UX, and Security to break down complex work into shippable iterations. • Mentor engineers through code review, technical discussions, and shared backend best practices. • Support incident response and production debugging, then turn learnings into lasting system improvements.

• Develop new low-complexity features and fix bugs in existing systems under the guidance of more experienced developers • Participate in team meetings for planning, project follow-up, and technical discussions, contributing to the understanding of requirements • Write and maintain unit tests to ensure the quality of the code developed • Collaborate in code reviews, learning from feedback and applying best practices • Document technical solutions and procedures, helping to maintain the team's knowledge base • Configure and monitor development and test environments, ensuring the proper operation of tools and infrastructure • Support the team in resolving incidents and production issues, investigating causes and applying simple solutions • Research and propose solutions for technical challenges, exploring new technologies and approaches under supervision • Stay up to date on coding best practices, design patterns, and emerging technologies • Contribute to the definition and maintenance of CI/CD pipelines, understanding the continuous integration and delivery process

• Develop new, lower-complexity features and bug fixes in existing systems, under the guidance of more experienced developers. • Participate in team meetings for project planning and tracking. • Write and maintain unit tests. • Collaborate in code reviews, learning from feedback. • Document technical solutions and procedures. • Configure and monitor development and test environments. • Support the team in resolving incidents and production issues. • Research and propose solutions to technical challenges.