Senior Full Stack Engineer

Mattermost
United States
Workplace: RemoteFull timeUSD 142,723 - 172,723 annuallyFunction: Software EngineeringSkills: ["Ownership","Accountability","Judgment","Collaboration","Reliability focus"]

Build and scale the Mattermost core web platform for defense and critical-infrastructure teams. You’ll architect and own full-stack features across a Go backend and React/TypeScript frontend, including REST and WebSocket APIs, PostgreSQL/Redis data layers, and rigorous testing strategies. Work in an AI-forward way using agents like Claude Code and Cursor while maintaining full accountability for correctness, security, and design decisions. Contribute to open source and help develop internal tooling that speeds delivery.

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FursaFursa
Mattermost
Mattermost
3 days ago

Senior Full Stack Engineer

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Source: Company careers pageValidated by: Fursa AI
Last checked: 3 hours agoStatus: Live

Job Summary

Build and scale the Mattermost core web platform for defense and critical-infrastructure teams. You’ll architect and own full-stack features across a Go backend and React/TypeScript frontend, including REST and WebSocket APIs, PostgreSQL/Redis data layers, and rigorous testing strategies. Work in an AI-forward way using agents like Claude Code and Cursor while maintaining full accountability for correctness, security, and design decisions. Contribute to open source and help develop internal tooling that speeds delivery.
Location: United States
Workplace: Remote
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Architect and build full-stack features optimized for scalability and performance across Go, React, TypeScript, PostgreSQL, and Redis.
  • •Leverage AI coding agents (e.g., Claude Code and Cursor) as part of daily workflow while retaining accountability for correctness, security, and design decisions.
  • •Develop internal tooling and testing infrastructure to speed delivery, including agentic workflows and AI tooling skills for the broader team.
  • •Own testing strategy across the frontend and backend code you ship.
  • •Design and consume REST and WebSocket APIs and maintain security and compliance standards for government and enterprise clients.

Pay and Benefits

Salary: USD 142,723 - 172,723 annually

Key Requirements

  • •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 (Claude Code, Cursor, or Copilot) for scaffolding, refactors, code review, and test generation, with judgment about correctness.
  • •Bias toward shipping and owning complex software end-to-end without close supervision.
Experience:Open sourceDefenseIntelligenceCritical infrastructure
Skills:OwnershipAccountabilityJudgmentCollaborationReliability focus
Languages:English
Tech Stack:GoReactTypeScriptPostgreSQLRedisRESTWebSocketClaude CodeCursorCopilotMCP serversCI-integrated agentsMCPSecure messagingFile sharing

Eligibility

Security Clearance:U.S. government security clearance

Company Brief

Mattermost
Provides an open-source, self-hostable team collaboration platform with secure messaging, file sharing, and integrations for DevOps and enterprise workflows, enabling organizations to retain control of data and comply with strict security and privacy requirements.
Industry: Enterprise Software
Company Size: Large (251 to 1,000 employees)
Growth: Scaleup
Funding: Series A
Headquarters: Palo Alto, United States
Founded: 2015
WebsiteLinkedIn