Lead ownership of Mattermost's mobile app with focus on reliability, performance, and platform integrations for constrained and security-sensitive environments. Work across React Native/TypeScript and native iOS/Android code, improve synchronization and offline behavior, own crash-free and release-health outcomes using telemetry, diagnose production issues from traces and device profiling, maintain platform capabilities (push, background, secure storage), and contribute to the open-source codebase.

Drive technical architecture and roadmap across Go, React, TypeScript, PostgreSQL, and Redis; own testing strategy, internal tooling, and API design (REST and WebSocket). Set org-wide practices for AI-agentic engineering workflows, collaborate with security and compliance teams, mentor senior engineers, and contribute to Mattermost's open-source codebase. Role is remote-first and may require obtaining and maintaining a U.S. government security clearance.

Mattermost seeks a Staff Full Stack Engineer to set technical direction and drive architecture across Go and React/TypeScript for its core web platform. Role includes owning testing and internal tooling strategy, designing REST and WebSocket APIs, working with security and compliance teams, mentoring senior engineers, and shaping open-source code. Candidates must be legally authorized to work in Canada without sponsorship and may require government security clearance depending on engagements. Target salary range (CAD): 195,001–238,965 per year.

Role requires building and owning full-stack features (Go backend and React/TypeScript frontend), designing and consuming REST and WebSocket APIs, maintaining security and compliance for government/enterprise clients, and using AI coding agents as part of the development workflow. Position is remote-first and requires legal authorization to work in Canada.

Mattermost is hiring a Senior Full Stack Engineer to architect and implement full-stack features across Go backend and React/TypeScript frontend, focusing on scalability, performance, and regulatory security/compliance. The role requires designing and consuming REST and WebSocket APIs, working with PostgreSQL and Redis, owning testing strategy, and using AI coding agents daily. Remote-first role; posted salary range $142,723–$172,723/year. May require U.S. government security clearance and federal eligibility for export-controlled information.