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# Senior Full Stack Engineer

- **Company:** Mattermost Inc
- **Location:** Pittsburgh, PA, United States
- **Experience:** Expert
- **Salary:** $142,723.0 - $172,723.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Code Review, Relational Databases, Cursor, Distributed Systems, PostgreSQL, Networking Basics, Query Optimization, Microsoft Copilot, WebSocket, ReactJS, Claude Code, AI Coding Agents, Free and Open-Source Software
- **Published:** September 30, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3412441719&tx=JK8579FFQ&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* Strong full-stack development experience in Go and React, or a comparable stack
 * Experience designing and consuming REST and WebSocket APIs with solid networking fundamentals
 * Relational database experience including PostgreSQL, schema design, and query optimization
 * Hands-on daily fluency directing AI coding agents such as Claude Code, Cursor, or Copilot for scaffolding, refactors, code review, and test generation - with the judgment to know when to trust the output and when to take the wheel yourself
 * Bias toward shipping and owning complex software end-to-end without close supervision

Nice to Have:

 * Experience with distributed systems or high-availability service architecture
 * Familiarity with enterprise or regulated-environment security requirements
 * Background in defense, intelligence, or critical infrastructure products
 * Open-source contributions
 * Experience working on distributed or remote-first teams
 * Experience building tools, skills, or workflows on top of AI coding agents including MCP servers, agent skills, or CI-integrated agents