Tech Lead/Full Stack Engineer, Scheduling

Calendly

About The Position

Ready to make a serious impact? Millions of people already rely on Calendly, and we’re still in the midst of exciting product growth — it’s a fantastic time to join us. Everything you’ll work on here will accelerate your career to the next level. If you want to learn, grow, and do the best work of your life alongside the best people you’ve ever worked with, then we hope you’ll consider allowing Calendly to be a part of your professional journey. About the team & opportunity What’s so great about working on Calendly’s Engineering team? We make things possible for our customers through innovation. Why do we need you? Well, we are looking for a Senior Full Stack Engineer who will bring deep technical know-how, system design knowledge and a healthy dose of fun to the team. You will report to the Engineering Manager for the Scheduling group and will play a key role in designing and supporting the core features and architecture that underpin Calendly’s core product experience and maintain our users’ confidence. A day in the life of a Full Stack Engineer at Calendly The Calendly platform is a monolith that is being decomposed into various services in order for us to scale our platform and team. We need ambitious, experienced engineers who can help us drive this stage of growth. As an engineer at Calendly, you will both build new features and work to scale our platform and architecture. You will build tooling and automation to fine tune our delivery process as you grow into a service oriented specialist. You will also learn to work with multiple technologies such as Google Cloud Platform, Kubernetes, Argo Workflows, Rails, NodeJS, React, Golang, PostgreSQL, Redis, to name a few. When you join Calendly, you get the opportunity to deliver on a product used by millions and known for its best-in-class quality. Help us continue to deliver critical features to our users with excellence. We are looking for a high-impact Individual Contributor with a deep technical background who is ready to take the next step in their career. In this role, you will spend the majority of your time coding and architecting systems, while simultaneously mentoring junior engineers and leading technical initiatives. This position is designed for someone who has the "leadership itch" and wants to eventually transition into a Tech Lead Manager (TLM) role.

Requirements

8+ years of software development experience at a SaaS or technology company.
Experience leading small teams (1-4) or mentoring other engineers.
Professional experience with Ruby on Rails is nice to have. Experience with Node.js or a comparable web-app framework is also acceptable.
Professional experience with TypeScript.
Ability to adapt to new technologies, changing requirements, and evolving organizational needs.
Hands-on experience with Service-Oriented Architecture (SOA), microservices, and involvement in monolith-to-services modernization or large-scale refactoring initiatives.
Proven ability to own features end-to-end, including technical discovery, implementation, testing, release, and ongoing maintenance.
Proven ability to deliver complex projects on time, including delegating to other engineers and cross-team collaboration.
Experience using AI coding assistants (Copilot, Cursor, etc.) as productivity tools, with a clear understanding of generated code and the ability to defend implementation choices.
Availability for participation in an on-call rotation, ensuring prompt and effective responses to business-critical alerts outside of regular working hours.
Authorized to work lawfully in the United States of America as Calendly does not engage in immigration sponsorship at this time.

Nice To Haves

Professional experience with Ruby on Rails is nice to have. Experience with Node.js or a comparable web-app framework is also acceptable.

Responsibilities

Collaborate within your team to build new features that are targeted at our highest impact enterprise customers.
Contribute to platform scaling initiatives.
Meet regularly with Product and Design to fine tune requirements.
Attend agile ceremonies to help your team plan out their work and get it done.
Work across squads to improve Engineering practices at Calendly.
Review implementation plans and pull requests from your peers.
Mentor and coach other team members.

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