{"schemaVersion":"jobsearcher.job.v1","id":"f0675e26fc37588580da2ffa","url":"https://jobsearcher.com/jobs/f0675e26fc37588580da2ffa","canonicalUrl":"https://jobsearcher.com/jobs/f0675e26fc37588580da2ffa","title":"Full Stack Engineer","description":"Senior Founding Full Stack Engineer | AI Voice Agents\r\nSan Francisco, CA | On-site, 5 days a week | $200K–$280K base + equity\r\nBuild the future of AI-powered customer conversationsWe're partnering with a profitable, venture-backed AI company in the San Francisco Bay Area that's transforming enterprise customer service through advanced, voice-based AI agents.With a team of fewer than 50 people, the company is building production-ready AI solutions for major U.S. enterprises. This is an opportunity to join a small, high-impact engineering team where your work directly shapes the product, architecture, and technical direction of the business.The Opportunity\r\nAs aSenior Founding Full Stack Engineer , you'll take end-to-end ownership of core product features, from architecture and development to deployment in production.You'll work directly with the founders to build high-performance applications and the infrastructure powering real-time AI voice interactions. This role is ideal for an engineer who combines strong frontend expertise with solid backend skills and thrives in a fast-paced, early-stage environment.What you'll do:Design and build core features for AI voice agents, including prompt orchestration, real-time dashboards, and analytics platforms.Develop high-performance frontend applications using React and TypeScript.Build backend services, APIs, and integrations supporting enterprise-scale customer conversations.Integrate telephony and real-time communication systems.Own the full software development lifecycle, from system design to production deployment.Optimize application performance, state management, and real-time data visualization.Work directly with founders and enterprise customers to deliver reliable, production-ready solutions.What We're Looking For3–8 years of professional experiencein full-stack software engineering.Strong expertise inReact and TypeScript , particularly in building performant frontend applications.Proven ability to own features end-to-end, including architecture, API development, and deployment.A Bachelor's degree in Computer Science or Computer Engineering from a top-tier academic program, with a minimum GPA of 3.8/4.0 or equivalent.Willingness and ability to workon-site in San Francisco, five days per week .Nice to HaveExperience with voice, telephony, or real-time communication technologies such as Twilio, SIP, or WebRTC.Experience building products powered by LLMs or AI agents.Experience as an early engineer at a fast-growing startup.$200,000–$280,000 annual base salary0.25%–0.45% equity100% employer-paid medical, dental, and vision insurance.$10,000 relocation package.Visa sponsorship available for eligible candidates under H-1B, TN, L-1, E-3, and O-1 categories.Daily meal allowance and reimbursements for gym, commuting, phone, and internet expenses.Why Join?\r\nYou’ll have the opportunity to shape a core AI product, work directly with company founders, and make meaningful technical decisions in a small team where engineering has a direct impact on business outcomes.If you’re a strong full-stack engineer who enjoys building from the ground up and shipping production-grade AI products, we’d love to hear from you.#J-18808-Ljbffr","company":"Missiondev","rawCompany":"missiondev","city":"Sacramento","state":"CA","isRemote":false,"isActive":true,"createdAt":"2026-11-04T02:37:09.676Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Full Stack Engineer","description":"Senior Founding Full Stack Engineer | AI Voice Agents\r\nSan Francisco, CA | On-site, 5 days a week | $200K–$280K base + equity\r\nBuild the future of AI-powered customer conversationsWe're partnering with a profitable, venture-backed AI company in the San Francisco Bay Area that's transforming enterprise customer service through advanced, voice-based AI agents.With a team of fewer than 50 people, the company is building production-ready AI solutions for major U.S. enterprises. This is an opportunity to join a small, high-impact engineering team where your work directly shapes the product, architecture, and technical direction of the business.The Opportunity\r\nAs aSenior Founding Full Stack Engineer , you'll take end-to-end ownership of core product features, from architecture and development to deployment in production.You'll work directly with the founders to build high-performance applications and the infrastructure powering real-time AI voice interactions. This role is ideal for an engineer who combines strong frontend expertise with solid backend skills and thrives in a fast-paced, early-stage environment.What you'll do:Design and build core features for AI voice agents, including prompt orchestration, real-time dashboards, and analytics platforms.Develop high-performance frontend applications using React and TypeScript.Build backend services, APIs, and integrations supporting enterprise-scale customer conversations.Integrate telephony and real-time communication systems.Own the full software development lifecycle, from system design to production deployment.Optimize application performance, state management, and real-time data visualization.Work directly with founders and enterprise customers to deliver reliable, production-ready solutions.What We're Looking For3–8 years of professional experiencein full-stack software engineering.Strong expertise inReact and TypeScript , particularly in building performant frontend applications.Proven ability to own features end-to-end, including architecture, API development, and deployment.A Bachelor's degree in Computer Science or Computer Engineering from a top-tier academic program, with a minimum GPA of 3.8/4.0 or equivalent.Willingness and ability to workon-site in San Francisco, five days per week .Nice to HaveExperience with voice, telephony, or real-time communication technologies such as Twilio, SIP, or WebRTC.Experience building products powered by LLMs or AI agents.Experience as an early engineer at a fast-growing startup.$200,000–$280,000 annual base salary0.25%–0.45% equity100% employer-paid medical, dental, and vision insurance.$10,000 relocation package.Visa sponsorship available for eligible candidates under H-1B, TN, L-1, E-3, and O-1 categories.Daily meal allowance and reimbursements for gym, commuting, phone, and internet expenses.Why Join?\r\nYou’ll have the opportunity to shape a core AI product, work directly with company founders, and make meaningful technical decisions in a small team where engineering has a direct impact on business outcomes.If you’re a strong full-stack engineer who enjoys building from the ground up and shipping production-grade AI products, we’d love to hear from you.#J-18808-Ljbffr","datePosted":"2026-11-04T02:37:09.676Z","dateModified":"2026-11-04T02:37:09.676Z","hiringOrganization":{"@type":"Organization","name":"Missiondev","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Sacramento","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"f0675e26fc37588580da2ffa"},"url":"https://jobsearcher.com/jobs/f0675e26fc37588580da2ffa"}}