Senior Full Stack Engineer

Mattermost

. Architect and build scalable, high-performance full-stack features across Go, React, TypeScript, PostgreSQL, and Redis .

Posted 10/31/2026full-timeRemote • United StatesSenior💰 $142,723 - $172,723 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in full-stack development with a focus on Go and React, along with proficiency in designing and consuming REST and WebSocket APIs. Capable of maintaining security and compliance standards while contributing to open-source projects and utilizing AI coding agents effectively.

Highest-signal resume keywords

Full-Stack DevelopmentGo ProgrammingReact DevelopmentREST API DesignPostgreSQL Schema Design

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Full-Stack DevelopmentGo ProgrammingReact DevelopmentREST API DesignWebSocket API DesignPostgreSQLQuery OptimizationAI Coding AgentsTesting StrategyDistributed Systems

Soft Skills

JudgmentAccountabilityIndependence

Tools & Technologies

Claude CodeCursorCopilotMCP ServersCI-Integrated Agents

Certifications & Qualifications

U.S. Government Security Clearance EligibilityExport-Controlled Information Access Eligibility

Industry Keywords

Security ComplianceOpen-Source ContributionsDefense ProductsIntelligence ProductsCritical Infrastructure

Tech Stack

Tools & technologies

Distributed SystemsPostgresReactRedisTypeScriptGo

About the role

Key responsibilities & impact

Architect and build scalable, high-performance full-stack features across Go, React, TypeScript, PostgreSQL, and Redis
Use AI coding agents such as Claude Code and Cursor in the daily workflow while retaining accountability for correctness, security, and design decisions
Develop internal tooling and testing infrastructure, including agentic workflows and skills that improve AI tooling for the broader team
Own testing strategy across shipped frontend and backend code
Design and consume REST and WebSocket APIs
Maintain security and compliance standards required by government and enterprise clients
Contribute to Mattermost's open-source codebase
Ship full-stack features on the core platform within the first 90 days and own the testing strategy

Requirements

What you’ll need

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
Judgment to know when to trust AI coding agent output and when to take control
Ability to ship and own complex software end-to-end without close supervision
Eligibility to obtain and maintain a U.S. government security clearance may be required
Eligibility for access to export-controlled information under U.S. export control laws, including EAR and ITAR
Experience with distributed systems or high-availability service architecture (nice to have)
Familiarity with enterprise or regulated-environment security requirements (nice to have)
Background in defense, intelligence, or critical infrastructure products (nice to have)
Open-source contributions (nice to have)
Experience working on distributed or remote-first teams (nice to have)
Experience building tools, skills, or workflows on top of AI coding agents, including MCP servers, agent skills, or CI-integrated agents (nice to have)

Benefits

Comp & perks

Medical, dental, and vision coverage
Unlimited PTO
Company holidays
Work from home stipend
Annual learning and development budget for conferences, certifications, and courses
Paid parental leave for all parents
401(k) plan
Remote-first work environment