Principal Full-Stack Developer – Platform & Infrastructure

MaintainX

. Define the technical direction of shared services and components used by other teams .

Posted 10/21/2026full-timeMontreal • CanadaLead💰 CA$130,000 - CA$230,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in defining technical direction and leading large-scale projects, with a strong focus on API design, performance, and reliability. Proficient in mentoring engineers and driving adoption of best practices across teams.

Highest-signal resume keywords

Technical LeadershipTypeScriptReactNode.jsAPI Design

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Full-Stack Web DevelopmentMobile Product DesignMaintainable Code WritingIterative DevelopmentAdaptive DevelopmentTestable CodeGraphQLSQL DatabaseSearch TechnologiesCI/CD

Soft Skills

Excellent Communication SkillsProblem-Solving

Tools & Technologies

AI ToolsDesign SystemsComponent LibrariesDeveloper ToolsIDE ExtensionsObservability

Industry Keywords

FedRAMPSOC 2On-Call RotationTechnical DirectionPlatform Domain

Tech Stack

Tools & technologies

GraphQLJavaScriptNode.jsReactReact NativeSQLTypeScript

About the role

Key responsibilities & impact

Define the technical direction of shared services and components used by other teams
Design APIs, tools and design-system components and drive adoption across teams
Improve the speed, security and reliability of software design, testing and delivery
Gather internal engineer feedback, measure adoption and iterate
Lead large, ambiguous projects end to end from planning through production
Collaborate with product managers, designers, engineering leadership and engineers to shape roadmaps
Own the long-term technical health of a platform domain, including reliability and performance
Drive architecture decisions and write technical proposals
Mentor senior and staff-level engineers
Raise standards for tooling, testing and delivery practices across multiple teams
Join a 5–10-person team and participate in the on-call rotation
Assume full technical direction of a platform domain or system within the first six months

Requirements

What you’ll need

10+ years of professional experience designing full-stack web or mobile products
Demonstrated technical leadership extending beyond a single team
Strong hands-on experience with TypeScript, React and Node.js
Experience designing shared systems that operate at large scale
Experience with iterative, adaptive and mobile-first development
Demonstrated ability to write maintainable, testable code
Excellent written and verbal communication skills
Ability to advance problems before specifications are fully defined
Daily use of AI tools in the development process
Participation in an on-call rotation
GraphQL, React Native or SQL database experience is an asset
Experience with search technologies, authentication and identity, design systems or component libraries, developer tools or IDE extensions, CI/CD, observability, FedRAMP or SOC 2 is valued
Legally authorized to work in Canada

Benefits

Comp & perks

Equity
Annual bonus
Health coverage, retirement and leave benefits (plan differs by country)
Hybrid work with no minimum office-presence requirement
Participation in company belonging and inclusion initiatives