Multiple roles at Mattermost
Core
Architect and ship full-stack features end-to-end for an open-core collaboration and workflow automation platform serving defense, intelligence, and critical infrastructure customers.
Role type
Senior IC full stack engineer (Go/React)
Builds
Core platform features, internal tooling, and testing infrastructure
Domain
SaaS collaboration platform, open-source, defense/critical infrastructure
Deliverable
production ML models | product features
Required skills
Go, React, TypeScript, PostgreSQL, Redis, REST APIs, WebSocket, networking fundamentals, relational database design, query optimization, test strategy, security compliance
Preferred skills
distributed systems, high availability architecture, regulated-environment security, open-source contributions, remote-first team experience
Technologies
Go, React, TypeScript, PostgreSQL, Redis, Claude Code, Cursor
Responsibilities
Architect and ship full stack features end to end, own the testing strategy for shipped features, build internal tooling and testing infrastructure, work without close supervision, hold security and compliance bar
Seniority
Senior, hands-on IC