HighLevel

Staff Backend Engineer – Calendar Integrations

HighLevel

full-time

Posted on:

Location Type: Remote

Location: India

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Job Level

Lead

About the role

  • Architect and evolve a plugin-based integrations marketplace that supports calendars, conferencing tools, CRMs, and productivity apps
  • Design a high-scale, multi-tenant sync engine for Google, Outlook, Apple Calendar, Zoom, Teams, and other providers
  • Implement delta sync pipelines using Google Sync Tokens, Microsoft Delta Queries, and CalDAV/WebDAV sync mechanisms
  • Define and maintain a normalized event model across providers, covering recurrence, attendees, reminders, and conferencing data
  • Ensure strict standards compliance with iCalendar (RFC 5545), ICS formats, RRULE logic, and timezone rules
  • Build resilient, idempotent workflows with retries, backoff, dead-letter queues, and replay-safe operations
  • Create automated sync health scoring and drift detection systems with self-healing and recovery paths.
  • Develop integration SDKs, OAuth flows, webhooks, and debugging tools to power partner and third-party extension development
  • Lead architecture reviews, RFCs, and cross-team technical strategy with Scheduling, Platform, AI, Experience, and SDET teams
  • Mentor engineers and elevate engineering quality through hands-on guidance, design leadership, and best practices

Requirements

  • 8+ years of backend or platform engineering experience, with 2+ years in a technical leadership role
  • Deep experience designing integration systems, APIs, SDKs, or plugin architectures
  • Proven ability to lead cross-functional, platform-level initiatives with strong attention to developer experience
  • Experience with authentication flows, webhook systems, and sandbox environments for developers
  • Strong understanding of security, scalability, and extensibility in multi-tenant or developer platform environments
  • Passion for building tools that enable and empower other developers
  • Excellent communication skills and the ability to lead a team through ambiguity with clarity
Benefits
  • Equal Opportunity Employer
  • Remote-first environment
  • Supportive community of over 2 million businesses

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
plugin-based integrationssync engine designdelta sync pipelinesevent model normalizationiCalendar complianceworkflow resilienceautomated sync health scoringintegration SDKsOAuth flowswebhooks
Soft skills
technical leadershipcross-functional collaborationdeveloper experience focuscommunication skillsmentorshipdesign leadershipproblem-solvingclarity in ambiguity