O

Opencall

AI automation for appointments and billing

Senior Full Stack Software Engineer

Full-Time
No salary listed
Senior
Bachelor's, Master's
New York, NY, USA
In PersonThe employer prefers candidates in San Francisco or New York and is open to exceptional remote applicants.
Software EngineeringFull-Stack Engineering

About the job

Requirements
  • A Bachelor's or Master's degree in Computer Science, Engineering, or a related field is required.
  • At least 6 years of software engineering experience focused on product development is required.
  • Proficiency in Python and TypeScript is required.
  • Frontend development experience is required; React is preferred.
  • Knowledge of data structures, algorithms, databases, networking, and design patterns or principles is beneficial.
  • The candidate must be able to communicate technical concepts clearly.
  • The candidate must demonstrate strong product judgment in determining what to build as well as how to build it.
Responsibilities
  • Work on the realtime voice platform, customer dashboard, agent runtime, and analytics pipeline.
  • Understand current product usage and long-term goals, then design and develop features that maximize impact relative to effort.
  • Design systems within strict performance and infrastructure constraints.
  • Scale the platform to more than 100 times its current traffic.
  • Participate in hiring, delegation, and mentorship, with the potential to grow and run an organization.
Desired Qualifications
  • Expertise in scalable infrastructure, microservices architecture, containerization, Docker, Kubernetes, and distributed systems.
  • Experience with GraphQL, preferably Relay GraphQL.
  • Experience with cloud platforms such as AWS, GCP, or Azure.

About the company

OpenCall.ai provides an AI-driven platform that automates scheduling, availability checks, and billing for service-based SMEs in ophthalmology, beauty salons, and personal care by integrating with tools like Google Calendar, Square, and Boulevard. It works by an AI that answers questions, manages client commitments, and can upsell services, delivered as a SaaS with tiered plans plus a white-glove onboarding, designed for rapid deployment. It differentiates itself by targeting specific SME sectors and offering end-to-end automation with professional onboarding, aiming for measurable outcomes like reducing call costs and increasing revenue without more staff. Its goal is to streamline operations, reduce overhead, and improve customer satisfaction and revenue through AI-powered automation.

Company Size

11-50

Company Stage

Seed

Total Funding

$130K

Headquarters

San Francisco, California

Founded

2022

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Simplify Jobs

Simplify's Take

What believers are saying

  • OpenCall launched SMS on June 9, 2025, widening use cases and response rates.
  • The company remains active on Y Combinator jobs as of August 17, 2026.
  • App Store availability on June 11, 2026 makes adoption friction lower for operators.

What critics are saying

  • OpenCall still has no visible public enterprise customer logos or revenue disclosure.
  • Voice agent startups face fast commoditization from OpenAI, Google, and Twilio.
  • If call quality slips, ophthalmology and salons will churn within one contract cycle.

What makes Opencall unique

  • Y Combinator W24 backs OpenCall, signaling strong founder-market fit and distribution.
  • OpenCall integrates Google Calendar, athenahealth, and billing systems for workflow automation.
  • Its SMS launch on June 9, 2025 expands beyond voice into text-based operations.

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Benefits

Remote Work Options

Company Equity

Growth & Insights and Company News

Headcount

6 month growth

-9%

1 year growth

-9%

2 year growth

-16%
OpenCall
Jun 9th, 2025
Now Live: OpenCall SMS

Opencall has launched SMS: the same powerful AI that runs its voice agents, now available over text.

Y Combinator
Mar 19th, 2024
Launch YC: OpenCall.ai 📲 AI call centers for any business | Y Combinator

We give any business a skilled, affordable call center.