Is the Senior Full Stack Engineer role remote?

Yes — Mattermost lists this as a fully remote position.

What's the salary range?

Mattermost lists $142,723–$172,723 for this role.

What's the tech stack?

Joblaze extracted these technologies from the posting: Go, PostgreSQL, React, Redis, TypeScript.

What seniority level is this role?

Mattermost targets senior candidates for this position.

Is this full-time or contract?

Full-time for this Senior Full Stack Engineer role at Mattermost.

Senior Full Stack Engineer at Mattermost

Joblaze summary

The Senior Full Stack Engineer at Mattermost is responsible for architecting and developing scalable features for the company's core web platform, focusing on security and compliance for clients in defense and critical infrastructure. Proficiency in Go and React, along with experience in API design and relational databases like PostgreSQL, is essential, as is the ability to leverage AI coding agents in daily workflows. This role is ideal for experienced engineers who thrive in autonomous environments and have a track record of delivering complex software solutions.

Joblaze insights

Listed 9 days ago on Joblaze — tracked directly from Mattermost's career page.
Mattermost has 14 other open roles including Senior Full Stack Engineer, Senior Security Engineer, GRC Manager.
1969 active Go roles on Joblaze right now.
1940 active TypeScript roles on Joblaze right now.
1515 active React roles on Joblaze right now.
Salary band is below the typical range for Fullstack roles (median ~$165,000).
Pays more than 35% of the 962 salaried Go roles we track (median $164,200). See Go salary trends

Quick facts

Is the Senior Full Stack Engineer role remote?: Yes — Mattermost lists this as a fully remote position.
What's the salary range?: Mattermost lists $142,723–$172,723 for this role.
What's the tech stack?: Joblaze extracted these technologies from the posting: Go, PostgreSQL, React, Redis, TypeScript.
What seniority level is this role?: Mattermost targets senior candidates for this position.
Is this full-time or contract?: Full-time for this Senior Full Stack Engineer role at Mattermost.

From the original posting

Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365.

To learn more, visit www.mattermost.com

We are seeking a Senior Full Stack Engineer to help build and scale Mattermost's core web platform for teams operating in defense and critical infrastructure sectors. You will contribute across our Go backend and React/TypeScript web frontend, building features that hold up under strict security, compliance, and reliability requirements.

Our engineering culture is AI-forward. We expect engineers to work fluently with AI coding agents such as Claude Code day-to-day — for scaffolding, refactors, code review, and test generation — and treat that as core craft rather than a shortcut. We would rather hire smart people who get stuff done than chase an exact tech-stack match. If you have a track record of shipping and owning complex software end-to-end, we want to hear from you.

What You Will Do

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

Required:

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

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.

Why Mattermost

Mission-driven work: Your contributions directly support the organizations and missions that depend on secure, reliable collaboration including the U.S. Department of War and critical infrastructure operators worldwide
Remote-first culture: Work from anywhere with a globally distributed, high-trust team built for autonomy and ownership
AI-forward environment: We actively adopt and build AI-enabled workflows. Agentic development is core craft here, not a novelty
End-to-end ownership: Ship and own complex software across the full stack with real accountability for what you build
Open source at the core: Be part of a vibrant developer community shaping the future of secure collaboration

Compensation

Mattermost takes a market-based approach to pay. Actual compensation may vary based on location, skills, experience, qualifications, and market conditions.

Target Salary Range: $142,723- $172,723

U.S. Eligibility & Compliance

This role may require obtaining and maintaining a U.S. government security clearance. Candidates must meet federal eligibility requirements to be considered. For more information visit Security Clearances — United States Department of State

Applicants must meet eligibility requirements for access to export-controlled information as defined by U.S. export control laws, including EAR and ITAR. For more information visit the Bureau of Industry and Security and the Directorate of Defense Trade Controls.

Mattermost is an EEO Employer, we are a remote-first, open-source company.

We are continually working to expand our hiring in more countries and regions, ensuring compliance with local laws and regulations, which takes time.

Mattermost values your unique perspective—we welcome all applicants. We encourage individuals from all backgrounds to apply and are committed to assessing candidates based on their skills and qualifications. We do not tolerate discrimination against staff or applicants based on race, religion, national origin, age, disability, pregnancy status, veteran status, or other personal characteristics.

If you require accommodations during the interview process, please let us know—we’re happy to assist.

Senior Full Stack Engineer

Similar positions