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Phonely

Software Engineer Intern

Intern software engineer troubleshoots customer issues, builds frontend components with React/Next.js, and supports production systems/observability in a fast-paced environment. Requires CS student status, JS/TS experience, and strong debugging skills.

San Francisco, CAFullstack EngineeringOnsiteEntry level
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About the role

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

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

Skills

ReactNext.jsTypeScriptJavaScriptPythonNode.jsAWSGCPKubernetesFirebase

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