Retell AI
Build, test, deploy AI voice agents
Software Engineer New Grad
+ Equity + Relocation support
More locations: Redwood City, CA, USA
Relocation support is provided.
About the job
- A bachelor's degree in Computer Science, Computer Engineering, or Electrical Engineering.
- Already completed the degree; candidates still completing a bachelor's or master's degree are not considered.
- Strong software engineering fundamentals.
- Ability to thrive in a fast-moving startup environment.
- Design and build internal and external artificial intelligence systems that power hiring, sales, operations, and scaling.
- Build production-grade artificial intelligence workflows, automations, and artificial intelligence agent systems affecting company operations and customer experience.
- Work directly with enterprise customers to design artificial intelligence solutions, build integrations, and provide technical advice.
- Build artificial intelligence systems, internal tooling, automations, and infrastructure.
- Ship code to production and own real projects used across the company.
- Work directly with experienced engineers and founders to solve operational and artificial intelligence challenges.
- Build software through customer-facing and internal engineering work as the role develops.
- Two or more software engineering internships.
- Experience building production software through internships, research, startups, or personal projects.
- Experience with backend development, application programming interfaces, artificial intelligence tooling, or full-stack applications.
About the company
Retell AI provides a platform for developers to build, test, deploy, and monitor AI-powered voice agents. It offers a voice AI API and an agent builder that lets users create custom voice agents to automate and optimize communication processes, designed to handle complex workflows and scale to production-ready levels. The platform works by giving developers an API plus a visual/programmable builder to design agents, integrate them into systems, and manage deployment and monitoring for production use. Its differentiators include an end-to-end lifecycle toolkit for AI voice agents, support for complex call workflows at scale, and ecosystem partnerships (e.g., Data Leaders, Cal.com) that expand integrations. Retell AI’s goal is to help businesses improve their call operations and customer interactions by adding reliable AI-driven voice capabilities through a scalable developer platform.
Company Size
51-200
Company Stage
Seed
Total Funding
$4.7M
Headquarters
Redwood City, California
Founded
2023
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Simplify's Take
What believers are saying
- Conductor launched June 29, 2026, and now drives 70% of simulation tests.
- Retell reached $50 million ARR in 2025 and 55 million monthly calls.
- New GPT-5.6 support and lower pricing improve conversion, retention, and usage growth.
What critics are saying
- OpenAI GPT-5.6 and Realtime 2.1 compress Retell's voice-layer differentiation by 2026.
- Telephony outages or bad agent behavior create direct customer churn and liability.
- Enterprise buyers can move from Retell to in-house stacks once workflows stabilize.
What makes Retell AI unique
- Conductor gives graph-native review, testing, and approvals inside Retell's builder.
- Retell handles 55 million monthly calls with sub-600ms latency and 50-plus languages.
- Retell ships telephony, prompts, tools, analytics, and managed workflows in one platform.
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Benefits
Health Insurance
Wellness Program
Phone/Internet Stipend
Remote Work Options
Hybrid Work Options
Growth & Insights and Company News
6 month growth
↓ -1%1 year growth
↓ -4%2 year growth
↓ -3%VoiceAIWrapper has launched a white label platform enabling agencies to resell Retell AI voice agents under their own branding. The platform provides client portals on custom domains, workspace management, reporting, and Stripe billing integration. The Dubai-based company addresses the gap between creating voice agents and delivering them to clients. Agencies can set their own pricing through recurring plans, usage packs, or one-time fees. VoiceAIWrapper charges a flat monthly fee without adding per-minute markups to Retell AI usage. The platform supports 11 languages and integrates with tools including GoHighLevel, HubSpot, and Twilio. It also accommodates multiple voice AI providers such as Vapi, ElevenLabs Agents, and Bolna. Plans start at $79 monthly for five client accounts, with a seven-day trial available. Over 1,000 agencies have used the platform. VoiceAIWrapper holds SOC 2 Type 2 certification and complies with GDPR and HIPAA regulations.
Retell AI, a voice AI platform, has launched Conductor, the first graph-native review system for production voice agents. The AI copilot helps enterprises identify failures, automate testing and continuously improve voice agents for contact centers. Conductor operates within agent workflows, displaying proposed changes directly in the interface and requiring human approval before implementation. Users interact with the system in plain English, enabling teams to shape voice agents without coding. The platform already generates 70% of Retell's simulation tests and executes half of all agent edits. The system features a graph-native review interface, operational intelligence for analysing failed calls, and embedded best practices from thousands of enterprise deployments. Retell AI processes over 30 live calls per second and handles 55 million AI phone calls monthly. Conductor is now available to all Retell customers.
Retell AI, a voice AI platform based in Redwood City, California, has been ranked number one on the San Francisco Business Times' 2026 Best Places to Work in the Bay Area list in the 10-24 employees category, scoring 99.04. The recognition comes as the company has grown annual recurring revenue from $10 million to $60 million over the past year whilst maintaining a lean team. Retell AI's workplace culture emphasises autonomy and outcomes over hours worked, with employees able to work remotely for up to two weeks annually. The company's no-code platform enables enterprises to deploy AI voice agents rapidly. It currently processes over 55 million AI phone calls monthly for clients including the San Antonio Spurs, Motorola and Lenovo, handling more than 30 concurrent calls per second at peak volume.
Retell AI, an AI voice agent platform, has been named to Wing VC's Enterprise Tech 30 2026 list, recognised as one of 10 early-stage companies. The list, compiled with Newcomer, highlights voice AI as a key trend for 2026. Launched in 2024, Retell AI reached $50 million ARR in 2025 and now powers over 50 million AI phone calls monthly. The platform enables corporate call centres to deploy AI voice agents for sales and support across multiple channels, offering human-standard voice quality, sub-600ms latency, and support for over 50 languages. The company's technology allows businesses to build and deploy voice AI agents within days rather than the industry standard of a year or more. Retell AI is HIPAA, SOC2 and GDPR compliant.
Evie Wang, co-founder and chief marketing officer of Retell AI, has been named to Inc.'s 2026 Female Founders 500 list. The annual honour recognises the most dynamic women business leaders in the United States, with this year's honourees collectively generating approximately $12.3 billion in 2025 revenue. Wang led Retell AI's marketing and product strategy during a period of hypergrowth, scaling annual recurring revenue from $8 million to $36 million in eight months across a 21-person team. The AI voice agent platform now handles over 40 million real-time calls monthly for Fortune 500 clients and has achieved over 300% quarter-over-quarter user growth. Under Wang's leadership, Retell AI has been recognised as an a16z Top 50 AI company.