Software Engineer, Full-Stack (Superhuman Mail - Canada)

Superhuman

2d • Remote

About The Position

At Superhuman Mail, we’ve built the fastest email experience in the world — one that's deeply loved and adored by customers who get through their inboxes twice as fast.
📣 We've recently joined forces with Grammarly (now known as Superhuman), the trusted AI assistant for communication and productivity used by over 40 million people and 50,000 organizations worldwide. Together, we’re creating the AI-native productivity suite that will redefine the future of work.
Grammarly is No. 11 on the Forbes Cloud 100, one of TIME's 100 Most Influential Companies, and one of Fast Company's Most Innovative Companies in AI. Companies like Atlassian, Databricks, and Zoom rely on Grammarly's technology, which integrates seamlessly with over 500,000 applications and websites.
As part of Superhuman's productivity suite, you'll join the Superhuman Mail team in shaping the future of email and communication. Learn more at superhuman.com and about our values here.
At Superhuman, we have a deep understanding of how to build products that people love. We incorporate fun and play, infusing magic and joy to create experiences that amaze and delight.
It all starts with the right team — a team that deeply cares about values, customers, and each other.
We're not solving a small problem, nor are we addressing a small market. We're reshaping the fundamentals of how people work. We're combining premium product craft with enterprise-scale capabilities to rethink how individuals and teams should fundamentally collaborate. We are building a household brand and a worldwide organization. We are here to do our best work, and we hope you are too.

Requirements

• 5+ years of professional fullstack web development experience, working from the database to the UI.
• You have a deep understanding of browser JavaScript (including the DOM and platform APIs).
• You believe AI will revolutionize how we work as well as the experiences that we create for our customers. Driven by passion and curiosity, you leverage AI to dramatically increase your own productivity and the impact of your team.
• You produce work that is striking, worthy of attention, and a contribution to the state of the art.
• You’re effective across various mediums (especially Slack, Notion, and email) and can produce and consume detailed written materials as needed without sacrificing speed. You respond quickly and thoughtfully to unblock others and speed things up.
• Acts with 100% responsibility for their own outcomes as well as the outcomes of the company.
• Speed matters. Takes rapid and decisive steps forward, even in the face of uncertainty, recognizing action is the catalyst for progress and growth.
• You embrace challenges, welcome feedback, and believe you and others can always grow.

Responsibilities

• Design, build, and maintain our desktop application while keeping resource usage (CPU, memory, threads) minimal and predictable
• Monitor, profile, and analyze runtime performance (rendering, memory leaks, blocking operations) and implement optimizations to avoid regressions
• Advocate and evolve the frontend architecture (modularity, dependency boundaries, layering, decoupling) to ensure scalability as features grow
• Define, enforce, and evangelize best practices in code quality (linting, style guides, code reviews, static analysis, automated checks)
• Develop robust error-handling, crash-reporting, fallback mechanisms, and recovery paths for critical failures inside the UI
• Work cross-functionally with backend, QA, and infrastructure teams to define interfaces, API contracts, versioning, and compatibility across releases
• Instrument and maintain tooling (metrics, logging, telemetry) to gain visibility into app health, user flows, and regressions
• Mentor other frontend engineers on performance, reliability, and architecture decisions; drive continuous improvements in the app’s frontend codebase

Benefits

• Excellent health care (including a wide range of medical, dental, vision, mental health, and fertility benefits)
• Disability and life insurance options
• RRSP matching
• Paid parental leave
• 20 days of paid time off per year, 12 days of paid holidays per year, two floating holidays per year, and flexible sick time
• Generous stipends (including those for caregiving, pet care, wellness, your home office, and more)
• Annual professional development budget and opportunities

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed
• Number of Employees: 11-50 employees