Fall 2026
Software Engineer Intern
Multiple Teams
Posted on 7/21/2026
Phonely
11-50 employees
AI-powered customer support and analytics platform
No salary listed
San Francisco, CA, USA
In Person
In-office role, 5 days per week in San Francisco.
 Software Engineering (1) |
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Find people who can refer or advise you
- 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
- 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
- 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
Phonely.ai provides AI-powered answering services and call analytics for businesses, offering customizable AI models tailored to industries such as healthcare, e-commerce, and retail. The product works by using proprietary AI to handle customer calls, track interactions, and continuously analyze and improve responses over time. A user-friendly dashboard shows metrics like average call duration and AI outcomes, helping teams optimize communication and customer satisfaction. The service is offered on a subscription basis, with add-ons for further customization and industry-specific models. Compared with competitors, Phonely.ai emphasizes tailored models for different sectors, actionable analytics, and ongoing improvement of its AI responses. Its goal is to improve the quality and efficiency of business communication by providing scalable, insights-driven AI answering solutions.
Company Size
11-50
Company Stage
Series A
Total Funding
$16.1M
Headquarters
Sheridan, Wyoming
Founded
2023
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Simplify's Take
What believers are saying
- Phonely's partnership with Groq and Maitai reduced response times by 70% while boosting accuracy to 99.2%.
- Usage-based subscription pricing adapts to fluctuating call volumes, providing cost efficiency for businesses with high traffic.
- Phonely's AI receptionist for medical practices handles 24/7 patient calls, appointment booking, and urgent case routing.
What critics are saying
- Thoughtly and Synthflow undercut Phonely's pricing with sub-$0.05/minute models and native HIPAA compliance, forcing 30–40% healthcare client churn.
- OpenAI Realtime Agents launch zero-latency voice in Q4 2026, replicating Phonely's 99.2% accuracy and eliminating core differentiation.
- MightyCall bundles voice AI with its $29/month CRM, capturing 15–20% of Phonely's SMB real estate and home services segment by Q1 2027.
What makes Phonely unique
- Phonely continuously improves AI responses over time using proprietary deterministic LLMs that outperform GPT-4o in accuracy and cost.
- Phonely creates AI vocal twins from existing call recordings, matching or exceeding human call center agent performance.
- Phonely integrates call analytics directly into business CRMs, surfacing optimizer data to drive higher conversion rates.
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Growth & Insights and Company News
6 month growth
↓ -30%1 year growth
↓ -28%2 year growth
↓ -25%Y combinator-backed AI call receptionist raises $22 million series A. Phonely raises $22M to supercharge AI receptionists, replacing humans at scale. US startup accelerator Y combinator has doubled down on a university of melbourne spin out in a $22 million (US$16m) series A. The round for Phonely was led by Base10 Partners, supported by YC, as well as three of the startup's enterprise customers Etech Global Services, customer experience platform TSA Group, and Engage CX, and others. The new capital values the business at US$100m (A$139m). The startup's raised more than A$26m. Phonely was founded in 2023 by PhD AI researcher Will Bodewes and Nisal Ranasinghe, and spun out of the university's AI Research Lab to launch in early 2024. They've since based the business in San Francisco. Bodewes describes it as like the the voice assistant from 'Iron Man', but for business. Get the best of startup daily straight to your inbox. * indicates required Phonely uses a company's website to create an AI receptionist that answers FAQs, routes calls, and books appointments, and can be set up in just 5 minutes. Phonely now handles millions of calls per month across thousands of businesses. It's also a leading AI job destroyer, with one customer replacing 350 human agents in a month with the platform. Xander van der Westhuizen, head of AI data and innovation at client and investor TSA Group said they have 4,500 human agents. "We didn't believe AI could match that level of conversational quality at scale," he said. "Working with the Phonely team, we've been able to create AI agents that resolve calls better than our best people." Fellow investor and customer Engage CX had more than $14 million in insurance policy sales via Phonely in the first four months of 2026.
The legendary US accelerator has gone all-in on bringing Phonely to the world's attention with posts that make it an instant rising star