Calendly is looking for a Senior Software Engineer with backend expertise in Go to design and build reliable, scalable services that underpin the Contact Management experience. The goal is to own critical services and APIs, collaborate cross-functionally, and evolve the architecture and data model to support rapid iteration and high availability.
Requirements
- Strong proficiency in backend development with Go (Golang), building services, APIs, and data-intensive backend workflows. Must-have.
- Experience designing for scalability, reliability, and observability in cloud environments (GCP preferred) with container orchestration (Kubernetes).
- Experience with service-oriented architectures and modernizing or decomposing legacy systems to services where appropriate.
- Proficient with relational databases (PostgreSQL preferred) and data modeling for complex domains.
- Frontend experience with React and TypeScript or a strong interest in partnering closely on UI contracts and end-to-end delivery.
- Experience with microfrontends, Node services, Rails ecosystems, and event-driven architectures.
- Background in contact management domains, search, deduplication, or enrichment pipelines.
Responsibilities
- Design, build, and operate Go services and APIs for contacts, companies, syncing third party data sources, deduplication, enrichment, and search - prioritizing reliability, performance, and maintainability.
- Contribute to our data model and storage strategies for people and related objects, ensuring consistency, privacy, and scalability.
- Improve platform resilience with robust observability, fault-tolerant patterns, and production readiness; participate in on-call to support business-critical services.
- Collaborate with adjacent squads to evolve architecture and shared components; participate in code reviews and provide mentorship to peers.
- If you have React/TypeScript experience, contribute to end-to-end delivery by partnering on UI contracts and occasionally implementing UI that integrates with your services.
- Core contact and company CRUD with a clean, extensible data model and API surface.
- Sync from various third-party sources, import pipelines, deduplication and merge flows.
Other
- 7-10+ years of professional software development experience, including owning production services at scale in a SaaS environment.
- Bias for clean, maintainable code, thoughtful testing, and incremental delivery; strong collaboration and communication skills.
- Availability to participate in an on-call rotation for critical services.
- Authorized to work lawfully in the United States of America, as Calendly does not engage in immigration sponsorship at this time.
- If you are an individual with a disability and would like to request a reasonable accommodation as part of the application or recruiting process, please contact us at recruiting@calendly.com.
