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Phonely
Software Engineer Intern
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Location
San Francisco, California
Work mode
on-site
Type
full-time
Department
Engineering
Company size
11+ people
First seen
4mo ago
Last seen
1d ago
About the role
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
Responsibilities
•
Investigate and troubleshoot real customer issues across frontend and backend systems
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Work closely with customers and internal teams to diagnose bugs, performance bottlenecks, and reliability problems
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Build internal tooling and dashboards to improve debugging, monitoring, and operational workflows
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Help monitor production systems and support incident response efforts
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Assist engineers in identifying root causes and shipping fixes quickly
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Build and maintain components for high-performance web applications using React and Next.js
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Collaborate with engineers to integrate APIs, real-time systems, and observability tooling
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Improve UI/UX by building responsive and user-friendly interfaces
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Support performance optimization efforts across rendering, caching, and latency
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Write clean, maintainable, and well-documented code
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Participate in code reviews, team discussions, and product development
Requirements
Qualifications
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Currently pursuing or recently completed a degree in Computer Science or related field
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Experience with JavaScript/TypeScript and modern frontend frameworks (React preferred)
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Familiarity with Next.js or willingness to learn quickly
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Strong problem-solving and debugging skills
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Comfortable investigating technical issues and working through ambiguous problems
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Basic understanding of APIs, async programming, and web fundamentals
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Exposure to full-stack development through projects, coursework, or internships
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Strong communication skills and ability to work directly with customers and teammates
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Eagerness to learn quickly in a fast-paced environment
Nice to have
Nice to Have
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Experience with backend development (Python or Node.js)
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Familiarity with cloud platforms (AWS, GCP)
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Experience with observability or monitoring tools
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Familiarity with databases (Firebase, Supabase, or similar)
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Interest in AI, real-time systems, infrastructure, or voice technologies
Benefits
What You’ll Gain
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Real-world experience debugging and operating production systems
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Hands-on exposure to customer-facing engineering and issue investigation
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Mentorship from experienced engineers
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Experience working with modern infrastructure, observability, and AI systems
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Opportunity to make meaningful contributions to a fast-growing company
Our Tech Stack
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Frontend:
React, Next.js, TypeScript
•
Backend:
Python, microservices, async systems
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Cloud & Infra:
AWS, GCP, Kubernetes, Redis
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Databases:
Firebase, Supabase
•
Observability:
Datadog, logging, metrics, tracing
More roles at Phonely
QA Engineer
Founding Product Manager
Founding Content Marketing Lead
Designer (first design hire)
Applied Machine Learning Researcher
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