Senior Full Stack Engineer

United Statesfull timeRemote

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senior

$163k–$195k

H1B: no

Mattermost Senior Full Stack Engineer at Mattermost to build and scale the core web platform using Go backend and React/TypeScript frontend. Responsible for developing features under strict security, compliance, and reliability requirements while leveraging AI coding agents in daily workflow.

Responsibilities

Architect and build full-stack features optimized for scalability and performance across Go, React, TypeScript, PostgreSQL, and Redis
Leverage AI coding agents such as Claude Code and Cursor as a core part of your daily workflow while retaining full accountability for correctness, security, and design decisions
Develop internal tooling and testing infrastructure to speed up the team's delivery, including agentic workflows and skills that make AI tooling more effective for the broader team
Own testing strategy across frontend and backend code you ship
Design and consume REST and WebSocket APIs with solid networking fundamentals
Maintain the security and compliance standards required by our government and enterprise clients
Contribute to Mattermost's open-source codebase
What We Are Looking For
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

Qualification

Background in defenseOpen-source contributionsExperience building toolsHow Success Is MeasuredFirst 90 Days

Required

Strong full-stack development experience in Go and React, or comparable stack
Experience designing and consuming REST and WebSocket APIs
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
Bias toward shipping and owning complex software end-to-end

Preferred

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
How Success Is Measured
First 90 Days: Shipping full-stack features on the core platform using an AI-forward agentic development workflow and owning testing strategy across the code you ship.

Benefits

Dental
Vision
401(k)
PTO
Parental Leave

Company

Mattermost

View company page

Source: greenhouse

Active within the past hour

Remote-friendly

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Must-Have Skills for This Role

GoReactTypeScriptPostgreSQLRedisREST APIs

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Senior Full Stack Engineer at Mattermost · LumiJobs