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IC4 Senior Full-Stack Engineer

Remote – Brazil

About the team

Cal.com is the open scheduling infrastructure for everyone.
The team helps people connect across time zones, calendars, and platforms — without the friction.
Trusted by developers and enterprises alike, Cal.com is open-source, privacy-first, and built to be deeply customizable. From startups to governments, they power scheduling for millions with speed, flexibility, and transparency.
They’re remote-first, async-first, and building the future of time.

Engineering at Cal.com

Engineering at Cal.com is fast, open, and foundational. They build core internet infrastructure for scheduling — open-source, scalable, and built to last.
Engineers own projects end-to-end, move with urgency, and think long-term. The team values transparency, autonomy, and honest collaboration over process-heavy workflows. You’ll thrive in the environment if you care about clean systems, sustainable growth, and building tools that connect the world.

Core Stack

  • Next.js (Vercel runtime) — used for both backend logic and frontend rendering
  • tRPC — end-to-end type-safe API communication
  • Tailwind CSS — utility-first styling for consistent UI
  • Prisma — type-safe database ORM
  • FlightControl + AWS — infrastructure orchestration and cloud deployment
  • Docker — containerized development and open-source packaging
  • Checkly, Grafana, Axiom, Sentry — observability, monitoring, and alerting stack

What You’ll Do

  • Work in a role that’s 90% backend and 10% frontend, focused on building robust, scalable systems and thoughtful integrations.
  • Ensure smooth daily releases and deployments.
  • Review complex and high-risk pull requests from internal teams and the open-source community.
  • Investigate and resolve complex issues (e.g., round-robin logic that operates across global time zones with varied configurations)
  • Take ownership of bringing the community-owned Docker repository under our official support.
  • Build and maintain observability tools such as alerts, dashboards, and metrics to proactively identify performance or usage issues.
  • Push the team forward in terms of code design and quality. Must have experience with clean coding principles, DDD, and event-driven systems
  • Mentor and guide team members across all seniority levels.
  • Contribute to documentation and internal knowledge sharing.

Bonus Points

  • Prisma (ORM for typed database access)
  • FlightControl (for deploying and managing infra)
  • AWS (hands-on, not just EC2 basics)
  • Checkly, Grafana, Axiom, Sentry (for reliability and observability)
  • Docker (especially in CI/CD or open-source infra contexts)

Compensation & Benefits

  • Salary range: $100,000 to $132,000 USD
  • Direct deposit into your bank account every two weeks
  • 30 days minimum PTO a year
  • Relocation as a service
  • Company retreat in stunning destinations with good vibes
  • Small, focused, high-impact team.
  • Work on one of the fastest-growing commercial open-source projects
  • A rapidly evolving team driving progress in the open-source space.
  • Async-first, flexible work schedule.
  • WIP (work in pajamas)
  • Accounting and Legal setup advisory (for PJ)
  • Team Success Manager for ongoing support
  • Regular check-ins to ensure well-being and provide a space to share what matters to you.
  • Guidance in sports to balance out the sitting hours in front of your computer
  • Grammarly premium subscription

Next Steps

  • Apply now
  • Call for guidance (60 min)
  • Interview with the Hiring Manager (60 min)
  • Technical Interview (60 min)
    • Optional: Bounty (paid open-source contribution to the platform)
  • Interview with Product Team (60 min)
  • Final Interview (60 min)

Learn more about the team