Posted Jun 10
Phonely

Software Engineer Intern

Phonely·San Francisco·FullTime

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

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