Software Engineer Intern
At some point in the future, every business will answer their phone with voice AI. We are making sure that when they build that AI agent, the experience of doing so doesn’t suck.
We’re growing fast and looking for an intern who is eager to learn, build, and contribute to real products used by customers. You’ll work closely with experienced engineers and cross-functional teams to gain hands-on experience across the stack.
This is a high-impact internship where you’ll write real code, ship features, and see your work in production.
Note: This is an in-office role, 5 days a week in San Francisco.
What You’ll Do
Build and maintain components for high-performance web applications using React and Next.js
Assist in developing end-to-end features across frontend and backend systems
Collaborate with engineers to integrate APIs and real-time systems
Help improve UI/UX by building responsive and user-friendly interfaces
Work with application state (client and server-side) in modern frameworks
Support performance optimization efforts (rendering, caching, latency)
Build internal tools and dashboards for monitoring and debugging
Write clean, maintainable, and well-documented code
Help debug issues and contribute to improving system reliability
Participate in code reviews, team discussions, and product development
Qualifications
Currently pursuing or recently completed a degree in Computer Science or related field
Experience with JavaScript/TypeScript and modern frontend frameworks (React preferred)
Familiarity with Next.js or willingness to learn quickly
Basic understanding of APIs, async programming, and web fundamentals
Exposure to full-stack development (personal projects, coursework, or internships)
Strong problem-solving skills and eagerness to learn
Good communication skills and ability to work in a team environment
Nice to Have
Experience with backend development (Python or Node.js)
Familiarity with cloud platforms (AWS, GCP)
Experience with databases (Firebase, Supabase, or similar)
Interest in AI, real-time systems, or voice technologies
Our Tech Stack
Frontend: React, Next.js, TypeScript
Backend: Python, microservices, async systems
Cloud & Infra: AWS, GCP, Kubernetes, Redis
Databases: Firebase, Supabase
Observability: Datadog, logging, metrics, tracing
Voice AI: SIP, real-time call handling, LLM orchestration
What You’ll Gain
Real-world experience building and shipping production features
Mentorship from experienced engineers
Exposure to modern full-stack architecture and AI systems
Opportunity to make meaningful contributions to a fast-growing company
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Phonely's AI phone agents answer every call, book appointments, and handle customer support 24/7. Trusted by 10,000+ businesses worldwide.
Key team members

Nick Affolter
Phonely•2K followers

Taylor Hayley
Phonely•9K followers

Islay Fossett
Phonely•757 followers

Holly P.
670 followers
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