Staff Full Stack Engineer

Mattermost

. Define and drive technical architecture and roadmap for Mattermost’s core web platform across multiple engineering teams .

Posted 10/31/2026full-timeRemote • United StatesLead💰 $172,724 - $227,135 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in full-stack development with a focus on Go and React, alongside a strong foundation in designing distributed systems and REST/WebSocket APIs. Proven ability to mentor engineers, influence technical direction, and operate within regulated environments while contributing to open-source projects.

Highest-signal resume keywords

Full-Stack DevelopmentDistributed Systems DesignREST And WebSocket API DesignRelational Database ExperienceAI Coding Agent Fluency

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

GoReactDistributed SystemsREST APIsWebSocket APIsPostgreSQLSchema DesignQuery OptimizationAI Coding AgentsTechnical Architecture

Soft Skills

MentoringInfluencing Technical DirectionCollaboration

Tools & Technologies

MattermostOpen-Source CodebaseTesting Infrastructure

Certifications & Qualifications

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

Industry Keywords

High-Compliance EnvironmentsFedRAMPITAR ComplianceDefenseIntelligenceCritical Infrastructure

Tech Stack

Tools & technologies

Distributed SystemsPostgresReactGo

About the role

Key responsibilities & impact

Define and drive technical architecture and roadmap for Mattermost’s core web platform across multiple engineering teams
Set organization-wide standards and best practices for AI-agentic engineering workflows
Lead internal tooling and testing infrastructure strategy
Own testing strategy and quality standards across frontend and backend systems
Drive architectural decisions for REST and WebSocket API design
Partner with security, compliance, and product leadership on strategic technical initiatives
Mentor senior engineers and act as a technical multiplier across the organization
Contribute to and shape Mattermost’s open-source codebase
Ship a meaningful full-stack feature within the first 90 days while assessing the technical landscape and identifying high-leverage improvements

Requirements

What you’ll need

Senior full-stack development experience in Go and React or a comparable stack, with ownership of complex systems end-to-end
Proven experience designing and owning distributed systems or high-availability service architecture at scale
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
Ability to influence technical direction across multiple teams without formal authority
Experience mentoring senior engineers and raising the technical bar for a broader team
Comfortable operating in regulated or high-compliance environments
Candidates must meet federal eligibility requirements for potential U.S. government security clearance
Must meet eligibility requirements for access to export-controlled information under U.S. export control laws, including EAR and ITAR
Nice to have: staff, principal, or technical lead experience
Nice to have: experience maintaining an open-source project
Nice to have: familiarity with FedRAMP or ITAR compliance frameworks
Nice to have: experience scaling engineering practices across a growing organization
Nice to have: background in defense, intelligence, or critical infrastructure products
Nice to have: experience building tools, skills, or workflows on top of AI coding agents

Benefits

Comp & perks

Remote-first culture: Work from anywhere with a globally distributed, high-trust team built for autonomy and ownership
AI-forward environment with AI-enabled workflows and agentic development
End-to-end ownership of complex software with real accountability
Open-source development and participation in a developer community
Equal employment opportunity and commitment to non-discrimination
Interview accommodations available upon request