Phonely · San Francisco
Software EngineeringEngineeringFullTimeposted 4mo ago
Software Engineer Internship
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
Investigate and troubleshoot real customer issues across frontend and backend systems
Work closely with customers and internal teams to diagnose bugs, performance bottlenecks, and reliability problems
Build internal tooling and dashboards to improve debugging, monitoring, and operational workflows
Help monitor production systems and support incident response efforts
Assist engineers in identifying root causes and shipping fixes quickly
Build and maintain components for high-performance web applications using React and Next.js
Collaborate with engineers to integrate APIs, real-time systems, and observability tooling
Improve UI/UX by building responsive and user-friendly interfaces
Support performance optimization efforts across rendering, caching, and latency
Write clean, maintainable, and well-documented code
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
Strong problem-solving and debugging skills
Comfortable investigating technical issues and working through ambiguous problems
Basic understanding of APIs, async programming, and web fundamentals
Exposure to full-stack development through projects, coursework, or internships
Strong communication skills and ability to work directly with customers and teammates
Eagerness to learn quickly in a fast-paced environment
Nice to Have
Experience with backend development (Python or Node.js)
Familiarity with cloud platforms (AWS, GCP)
Experience with observability or monitoring tools
Familiarity with databases (Firebase, Supabase, or similar)
Interest in AI, real-time systems, infrastructure, or voice technologies
What You’ll Gain
Real-world experience debugging and operating production systems
Hands-on exposure to customer-facing engineering and issue investigation
Mentorship from experienced engineers
Experience working with modern infrastructure, observability, and AI systems
Opportunity to make meaningful contributions to a fast-growing company
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