# Software Engineer Intern - Company: [Phonely]() - Location: San Francisco, California - Team: Engineering - Employment type: Full Time - Posted: May 8, 2026 ## Job description 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 ## Apply [Apply on Phonely]() Canonical job page: