Software Engineer
Lead Developer Evangelist focused on building and promoting cutting‑edge voice AI models, delivering them via cloud APIs or on‑prem solutions, and driving adoption among high‑growth tech companies.
Lavendo partners with startups and high‑growth companies to help them hire top‑tier sales, GTM, and technical talent. This role is with one of our clients; we’ll share full details about the company and interview process as we get to know you and confirm mutual fit.
About the Company
Our client is an AI company headquartered in San Francisco, backed by $9.6M in seed funding. They build and deploy frontier voice AI models — the voice equivalent of what OpenAI and Anthropic do for language — delivered via cloud API or fully on-prem, slotting directly into customers' existing orchestration stacks.
Their models drive 15%+ call success rates, 23%+ increased sales, and 25%+ IVR containment for companies ranging from high-growth startups to Fortune 500 brands. Usage-based pricing. Real customers. Real results.
The Mission
Make voice AI feel human. The team brings deep linguistic and machine learning expertise to close the gap between how machines sound and how people actually speak — with warmth, authenticity, and emotional nuance built into every model.
The Opportunity
As a Lead Developer Evangelist , you'll own how developers discover, evaluate, and adopt the product — online and in person. You'll work directly with the Head of Marketing and have close access to the CEO and product team. There's no content calendar waiting for you, no playbook to execute, and no team to manage before you've proven yourself. What there is: a company at a high-growth inflection point, a developer audience that hasn't been properly reached yet, and full creative latitude to go build that.
What You'll Do
Define and execute the developer community strategy — start from scratch, replace what isn't working with something developers actually want to be part of
Create original video content: tutorials, demos, builds, hot takes — on the platforms where voice AI developers actually spend time
Show up at hackathons, meetups, and conferences as the face of the company in developer conversations
Build reference apps, open-source tools, and demos in public — the kind of work that gets shared
Write content that engineers actually want to read, on the company blog and your own channels
Surface developer feedback directly to the product and engineering teams
Develop a 6-month strategy for events, talks, and partnerships — then execute it
Propose your own cadence. No one will hand you a schedule
What You Bring
4–8 years working in developer evangelism, DevRel, or developer-facing content at early or growth-stage startups
A public body of work you can share right now: YouTube, X/Twitter, Substack, GitHub, or some combination, with a developer audience
Technical fluency — enough to build with APIs, debug a webhook, and explain how a voice agent stack fits together. You don't need to b
Posted June 18, 2026