Vapi is revolutionizing the voice AI landscape as Apple Intelligence and Google Gemini prepare to bring voice assistants to 4 billion people. The company is building essential infrastructure to help developers bridge the gap between raw models and production-ready voice AI. Having recently launched in March and secured Series A funding, Vapi is expanding its founding team in San Francisco.

As a Founding Senior Engineer (Backend), you'll be instrumental in shaping both the technical architecture and company culture. The role involves working with a modular API-first architecture under real-time low-latency constraints. You'll own features end-to-end, from customer requests through deployment, while working directly with a small but growing team of 17 people.

The ideal candidate combines technical expertise with strong entrepreneurial spirit. You'll need to be comfortable with Typescript and Node.js, have excellent communication skills, and thrive in a startup environment. This role offers the opportunity to be a foundational team member at a well-funded startup that's already generating revenue and solving real problems in the voice AI space.

The position offers competitive compensation ($150K - $300K) with equity (0.10% - 0.30%), reflecting the senior nature of the role and its importance to the company's future. Based in San Francisco, you'll work directly with founders and have significant influence over the technical direction of a promising AI infrastructure company.

Senior Backend Engineer role at Vapi, building infrastructure for voice AI developers with TypeScript and Node.js in San Francisco

Founding Senior Engineer (Backend)

Vapi is revolutionizing the voice AI landscape as Apple Intelligence and Google Gemini prepare to bring voice assistants to 4 billion people. As a Founding Frontend Software Engineer, you'll play a crucial role in building the infrastructure that bridges the gap between raw models and production-ready voice AI. Recently launched and having secured Series A funding, Vapi is a small team of 6 looking to scale their success.

The role offers an opportunity to own the entire frontend Dashboard platform while helping shape company culture. You'll work directly with founders in San Francisco, implementing features, improving codebase quality, and creating delightful user experiences. The position requires a mix of technical expertise in React/TypeScript and startup mentality, with clear progression milestones in your first 45 days.

This is an ideal opportunity for a senior engineer who wants to make a significant impact in the voice AI space. You'll be joining at a pivotal time, with the company showing strong market validation through revenue growth and recent funding. The role offers competitive compensation ($150K-$300K) plus equity (0.10%-0.40%), reflecting the founding nature of the position.

The ideal candidate will bring both technical excellence and entrepreneurial spirit, capable of independent execution while collaborating effectively with the team. You'll be expected to not just code, but also think strategically about product decisions and user experience, making this an excellent opportunity for engineers looking to grow into technical leadership roles.

Senior Frontend Engineer role at Vapi, building voice AI infrastructure with React/TypeScript, offering $150K-$300K plus equity in San Francisco.

Founding Frontend Software Engineer

Vapi is revolutionizing the voice AI landscape as Apple Intelligence and Google Gemini prepare to bring advanced voice assistants to 4 billion people. As a Founding Infrastructure Software Engineer at Vapi, you'll be at the forefront of building the infrastructure that bridges the gap between raw AI models and production-ready voice AI solutions.

The company, which recently launched in March and has already achieved revenue growth and secured funding, is looking for a foundational team member to scale their real-time conversational infrastructure. This role combines technical expertise with the opportunity to shape company culture.

As the Founding Senior Engineer (Infra), you'll be responsible for critical infrastructure that handles millions of concurrent calls while maintaining impressive performance metrics. You'll work directly with the founders in a small, dynamic team of 6 people, based in San Francisco.

The ideal candidate brings a mix of technical prowess and entrepreneurial spirit. You'll need extensive experience with distributed systems, particularly Kubernetes, and a track record of scaling infrastructure. The role demands both independent project ownership and collaborative skills, with clear deliverables expected within your first month.

This is an exceptional opportunity for someone who wants to be part of the voice AI revolution, working in a fast-paced startup environment with significant technical challenges and the chance to make a lasting impact on both the product and company culture.

Join Vapi as a Founding Infrastructure Software Engineer to scale voice AI infrastructure, working with cutting-edge technology in a fast-growing startup.

Founding Infrastructure Software Engineer

Vapi is revolutionizing the voice AI landscape as Apple Intelligence and Google Gemini prepare to introduce 4 billion people to human-like voice assistants. As a founding Senior Site Reliability Engineer, you'll play a crucial role in building the infrastructure that bridges the gap between raw AI models and production-ready voice AI solutions.

The company recently launched in March and has already achieved significant milestones, including scaling revenue and securing Series A funding from a top-tier firm. With a small team of 6 members, Vapi is now expanding its founding team in San Francisco to scale their successful operations.

This SRE role is fundamental to Vapi's success, focusing on maintaining robust, scalable, and reliable real-time distributed systems that connect traditional telecommunications infrastructure with modern AI models. You'll be responsible for ensuring 99.99% system uptime, implementing automation, and establishing incident response protocols.

The ideal candidate brings strong technical expertise in Kubernetes, Terraform, AWS/GCP/Azure, and programming languages like Python or Go. You should be comfortable with uncertainty, possess excellent problem-solving abilities, and have a proven track record with distributed systems and infrastructure-as-code.

Join Vapi to be part of a transformative journey in voice AI technology, working directly with founders and having significant impact on the company's technical foundation and future growth. This role offers both technical challenges and the opportunity to shape the future of voice interfaces.

Join Vapi as a Founding Senior SRE to build and maintain scalable infrastructure for voice AI, offering $150K-$300K plus equity in San Francisco.

Founding Senior Engineer (Site Reliability)

Vapi is building the future of voice AI infrastructure for developers, positioned at the forefront of the voice interface revolution as Apple Intelligence and Google Gemini prepare to bring advanced voice assistants to billions. Recently launched in March and having secured Series A funding, Vapi is a small team of 6 looking to scale their success. As the Founding Senior Product Engineer (Frontend), you'll take ownership of their entire frontend Dashboard platform while helping shape company culture.

The role combines technical excellence with strategic impact, requiring expertise in React and TypeScript. You'll be responsible for designing and implementing key features, improving codebase quality, and directly contributing to customer satisfaction. The position offers an exciting opportunity to join a well-funded startup in its growth phase, with clear 30/60/90-day objectives including shipping features independently and collaborating on growth experiments.

The ideal candidate brings 5+ years of engineering experience, with a proven track record in frontend development and feature design. You'll work directly with founders in San Francisco, helping to build the foundation of a company that's positioning itself at the intersection of voice AI and developer tools. The compensation package of $150K-$300K plus equity (0.10%-0.40%) reflects the senior nature of this founding role.

This is an ideal opportunity for a senior engineer who wants to be part of a transformative company in the voice AI space, offering both technical challenges and the chance to shape the future of voice interfaces.

Senior Frontend Engineer role at Vapi, building voice AI infrastructure for developers, offering $150K-$300K plus equity in San Francisco.

Founding Senior Product Engineer (Frontend)

Building infrastructure to bridge the gap between raw models and production-ready voice AI

Vapi is an exciting startup at the forefront of voice AI infrastructure, having recently raised a Series A round. The company is building critical infrastructure to bridge the gap between raw models and production-ready voice AI solutions, particularly relevant as Apple Intelligence and Google Gemini bring voice AI to billions of users. As a Founding Growth Engineer, you'll be instrumental in driving the company's growth through data-driven experimentation and building scalable systems. You'll work directly with the founding team in San Francisco, focusing on optimizing acquisition, engagement, and retention through sophisticated A/B testing and funnel optimization. The role combines technical expertise with strategic thinking, requiring skills in Python, TypeScript, and SQL, along with a strong analytical mindset. This is an opportunity to join a fast-growing startup that's already showing strong market traction, having launched in March and successfully scaled revenue. The position offers the unique chance to shape the future of voice AI infrastructure while working with a dynamic, founder-level team in building critical growth systems and experiments.

Join Vapi as a Founding Growth Engineer to drive growth through experimentation and build scalable systems for voice AI infrastructure.

Founding Growth Engineer

Vapi is revolutionizing the voice AI landscape as Apple Intelligence and Google Gemini prepare to bring advanced voice assistants to 4 billion people. As a founding Senior Product Engineer, you'll play a crucial role in building the infrastructure that bridges the gap between raw models and production-ready voice AI.

The company recently launched in March, has achieved revenue growth, and secured Series A funding from a top-tier firm. With a small team of 6 members, Vapi is now expanding its founding team in San Francisco to scale their successful operations.

As the Senior Product Engineer, you'll take complete ownership of the frontend Dashboard platform, contributing significantly to both product development and company culture. The role demands a mix of technical expertise in React and TypeScript, along with the ability to work independently and drive innovation.

Key responsibilities include designing and implementing frontend features, improving codebase quality, responding to user feedback, and creating delightful customer experiences. The ideal candidate brings 5+ years of engineering experience, startup experience, and a proven track record of designing and deploying features.

This is an exceptional opportunity to join a well-funded, early-stage startup in the booming voice AI space, working directly with founders to shape the future of voice interfaces. The role offers competitive compensation ($150K-$300K) plus equity (0.10%-0.40%), and the chance to be a foundational member of a high-growth team.

Join Vapi as a Founding Senior Product Engineer to build the future of voice AI, leading frontend development with React and TypeScript in San Francisco.

Founding Senior Product Engineer

Vapi is revolutionizing the voice AI landscape as Apple Intelligence and Google Gemini prepare to bring advanced voice assistants to 4 billion people. As a recently launched startup that has already secured Series A funding, Vapi is building crucial infrastructure to help developers bridge the gap between raw models and production-ready voice AI solutions. 

The Founding Senior Engineer (Backend) role offers a unique opportunity to join a small but growing team of 17 people, working directly in San Francisco. You'll be instrumental in building and scaling the company's modular API-first architecture, focusing on real-time, low-latency solutions that delight customers.

This role combines technical excellence with entrepreneurial spirit, requiring someone who can not only architect and implement complex backend systems but also communicate effectively with customers and help shape company culture. The ideal candidate brings both senior-level engineering expertise and the mindset of a founder, capable of taking ownership of features from conception to deployment.

Working at Vapi means being at the forefront of voice AI technology, with the chance to make a significant impact as voice becomes the world's default interface. The company's recent success in scaling revenue and securing major funding demonstrates the massive potential for growth and innovation in this space.

Senior Backend Engineer role at Vapi, building infrastructure for voice AI applications with TypeScript and Node.js in San Francisco.

Vapi Engineering Jobs

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