Voice AI platform for developers, enabling extensible and reliable infrastructure for voice interactions.

We're creating the shift to voice as humanity's default interface. Why voice? Because voice captures the nuance, the emotion, and the humanity of interactions in ways text alone can't: voice makes technology human again.

As a Staff Infrastructure Software Engineer at Vapi, you'll be at the forefront of building the platform for the future of voice technology. Our market edge is extensible, reliable infrastructure designed for the full complexity of voice interactions. In just 18 months, we've grown to 150k developers and are adding 1000 every day.

Your primary responsibility will be scaling Vapi's real-time conversational infrastructure to handle millions of concurrent calls while maintaining a 1-second pickup time with 99.9% reliability. As a foundational team member, you'll also help shape Vapi's engineering culture.

Key Responsibilities:
- Design and implement reliable, scalable infrastructure solutions
- Build well-instrumented and monitored systems
- Lead technical architecture decisions for voice processing systems
- Mentor and guide other engineers on infrastructure best practices

Required Technical Skills:
- Deep experience with Kubernetes and distributed systems
- Proficiency in JavaScript, Node.js, TypeScript, and Rust
- Strong background in DevOps and infrastructure engineering
- Experience scaling systems for high concurrency

What Makes You a Great Fit:
- 8+ years of engineering experience, with 3+ years focused on infrastructure
- Previous experience as a Founding/Infrastructure/DevOps Engineer
- 1+ year experience at a seed or Series A startup
- Strong communication skills and ability to articulate technical decisions
- Mission-driven mindset and passion for voice technology
- Entrepreneurial spirit with the ability to take initiative and drive projects

Join us in revolutionizing how humans interact with technology through voice. You'll be working with a talented team in San Francisco, helping to build the foundation for the next generation of voice-enabled applications.

Staff Infrastructure Software Engineer position at Vapi, building scalable voice AI infrastructure for developers with competitive compensation $250K-$400K.

Staff Infrastructure Software Engineer

Voice AI platform for developers, building extensible and reliable infrastructure for voice interactions.

Vapi is revolutionizing human-computer interaction by creating the shift to voice as humanity's default interface. Their mission is rooted in the belief that voice captures nuance, emotion, and humanity in ways text cannot, making technology more human.

As a Customer Support Engineer at Vapi, you'll play a crucial role bridging customers and core engineering teams. The position involves ensuring smooth deployment of voice assistants and resolving technical challenges throughout the customer journey. You'll be responsible for handling support tickets across multiple platforms (Slack, email, Discord) and collaborating closely with engineers to deliver on technical requirements.

The ideal candidate brings 2+ years of hands-on experience in product shipping and enterprise customer interaction. You should be a quick learner who can rapidly understand customer use cases and requirements. The role demands a self-starter mentality - someone who takes initiative and can prioritize high-value tasks independently. Experience with LLMs is a must-have, and previous experience as a technical founder of a B2B SaaS company would be advantageous.

Vapi has shown impressive growth, with 150,000 developers using their platform and adding 1,000 new users daily. The company's focus on extensible, reliable infrastructure designed for the full complexity of voice interactions gives them a strong market edge. This role offers an opportunity to be part of a transformative technology that's making digital interactions more natural and human-centric.

Join Vapi to help shape the future of voice technology and be part of a team that's making technology more accessible and human-centered. Your work will directly impact how developers implement voice interfaces and how end-users interact with technology.

Customer Support Engineer role at Vapi, bridging customers and engineering teams to ensure smooth deployment of voice AI assistants.

Customer Support Engineer

Voice AI platform for developers, building extensible infrastructure for complex voice interactions.

Vapi is revolutionizing human-computer interaction by creating the shift to voice as humanity's default interface. Our mission is driven by the understanding that voice captures nuance, emotion, and humanity in ways text cannot - making technology more human.

As a Forward Deployed Engineer at Vapi, you'll be the crucial bridge between sales and product, ensuring seamless assistant deployment for customers. You'll own enterprise customer relationships post-deal closure, acting as both PM and engineer to drive pilot progress. Your responsibilities include collaborating with engineering teams on technical requirements, scoping integration work, and managing stakeholder communications.

We're looking for someone with 2+ years of hands-on experience in product shipping and enterprise customer interaction. You should be proficient in Typescript + Node or similar backend frameworks, with experience in prompt engineering and LLM agents. The ideal candidate is a quick learner who can rapidly understand customer use cases, a self-starter who takes initiative, and someone with strong communication skills to articulate complex technical concepts to various stakeholders.

What makes this role exciting is the opportunity to shape the future of voice technology. You'll be working with a platform that's gained significant traction - 150k developers and growing by 1000 daily. Your work will directly impact how enterprises implement and leverage voice AI, making technology more human and accessible.

The role requires technical expertise, customer-facing skills, and the ability to think strategically about product integration. You'll need to be comfortable with uncertainty, have an entrepreneurial mindset, and be passionate about building systems that scale. Previous experience as a technical founder in B2B SaaS is a plus.

Forward Deployed Engineer role at Vapi, bridging sales and product teams to ensure successful voice AI implementation for enterprise customers.

Forward Deployed Engineer

Voice AI platform helping developers integrate voice assistants into their products.

Apple Intelligence and Google Gemini are about to onboard 4 billion people to voice assistants that actually talk like people. This marks a new beginning for voice as the world's default interface. We will all want voice everywhere. Businesses are not ready. Products are not ready.

We're building the infrastructure that helps developers close the gap between the raw model and voice AI in production. We launched in March, scaled revenue, and raised funding this past week. We're a small team of 6 and growing, building out the founding team in-person in SF to scale what's working.

As the Founding Infrastructure Software Engineer, you will:

- Be responsible for scaling Vapi's real-time conversational infrastructure to millions of concurrent calls
- Ensure every call gets picked up within 1s with 99.9% reliability
- Own scalability projects end-to-end, from shipping pre-scoped projects within 7 days to independent projects within 30 days
- Build and implement monitoring systems, including prometheus rules and real-time latency spike alerts
- Develop anti-fragility features into the infrastructure, such as auto multi-cluster rollover

You'll be a foundational part of how we build the culture at Vapi, working directly with the founding team to shape the future of voice AI infrastructure. This is a unique opportunity to join a rapidly growing startup at the intersection of AI and voice technology, with the potential to impact how millions of people interact with voice assistants.

The ideal candidate brings:
- Deep experience with Kubernetes, Pulumi, or scaling distributed systems
- Strong communication skills to articulate both technical thoughts and emotional intelligence
- A proven track record of shipping infrastructure projects independently
- Startup experience and the ability to thrive in uncertain environments
- An entrepreneurial mindset with the drive to own and execute on new ideas

Join us in building the foundation for the next generation of voice AI applications, working with cutting-edge technology in a fast-paced, collaborative environment.

Founding Infrastructure Engineer role at Vapi, building scalable voice AI infrastructure for developers.

Vapi Engineering Jobs

Voice AI platform for developers, enabling extensible and reliable infrastructure for voice interactions.