Software Engineer, Back-End - Mail (US)

Superhuman offers a remote-flexible working model for this role on the Mail team, providing team members with focus time and flexibility to work from anywhere while staying connected to a collaborative, tight-knit culture. For those based in San Francisco, New York City, or Seattle, a hybrid setup is also available.

About Superhuman

Superhuman is the AI productivity platform on a mission to unlock the superhuman potential in everyone. The Superhuman suite of apps and agents integrates with over 1 million applications and websites, including Grammarly’s writing assistance, Coda’s collaborative workspaces, Mail’s inbox management, and Go, the proactive AI assistant. Founded in 2009, Superhuman empowers over 40 million people, 50,000 organizations, and 3,000 educational institutions worldwide to eliminate busywork and focus on what matters.

About the Role

Superhuman Mail is central to how people communicate and get work done. As part of the Mail team, Back-End engineers build the real-time systems powering our product, from the infrastructure behind message flows to the AI layer that keeps work moving intelligently. This role sits at the intersection of systems engineering and AI.

You’ll build services enabling agentic workflows to scale in Superhuman Mail and the real-time infrastructure connecting our AI layer to users across every surface. You’ll also help design the infrastructure for creating and publishing custom agents to a marketplace reaching tens of millions of users. Superhuman engineers have the freedom to innovate and shape the product roadmap.

Responsibilities

• Build and operate high-throughput production services that power AI agent orchestration, connector integrations, and real-time data pipelines.
• Design and build core platform services to allow our systems to scale.
• Work across the Superhuman product suite (Go, Mail, Docs, or Enterprise) based on team priorities.
• Collaborate closely with ML/AI, Product, and Front-End engineers to ship AI-powered features end-to-end.
• Build and evolve infrastructure as code, targeting high availability for both consumer and enterprise customers.
• Contribute to an engineering culture with a strong emphasis on documentation, testing, and reliability.
• Mentor and grow junior engineers on the team.

Requirements

• 8+ years of experience in back-end development, with strong fundamentals in algorithms, data structures, and system design.
• Experience building, deploying, and debugging production systems at scale.
• Experience with AWS or other cloud platforms (GCP, Azure).
• Fluency with AI coding tools (Copilot, Cursor, Claude Code, etc.) and a point of view on how they change software development.
• Experience with real-time systems, event-driven architectures, or high-throughput API design is a plus.
• Deep understanding of CI/CD and infrastructure as code.
• Demonstrated ability to work independently, manage priorities across multiple projects, and collaborate effectively with cross-functional teams.
• Strong product instincts—you care about the end-user experience and can make tradeoffs between speed and reliability.

Benefits

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

Pay

Superhuman takes a market-based approach to compensation, with base pay varying by location. US locations are categorized into two compensation zones based on proximity to hub locations. The expected salary range for this position is $186K–$300K.