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Phonely

Software Engineer Intern

San Francisco, California

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hirly's read of this role

Role family
Engineering
Seniority
Internship
Country
US
Work mode
On-site / unstated
First seen by hirly
28 Sept 2026

Derived automatically from the posting. Sign up to see how the role scores against your own resume.

the posting

  • 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

Original posting on Phonely's site ↗

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