MarTech
Transformed text-based surveys into automated AI phone interviews - zero-friction voice conversations with sentiment analysis and keyword tracking.
We built a voice-first AI interview platform for Cherian Koshy, a USA Today bestselling author and behavioral strategist. The platform conducts fully automated outbound phone interviews globally using AI voice agents, replacing a text-only format that limited reach to tech-savvy respondents. SMS broadcast with retry logic, sentiment analysis, keyword tracking, and feature-level reporting - delivered in 12 weeks.
Client
Cherian Koshy
Industry
MarTech
Timeline
12 weeks
Team Size
5 engineers + 1 PM
Impact
Delivery timeline
Interview friction
Analysis automation
Delivery timeline: From concept to production launch with voice AI agents, SMS distribution, and analytics dashboard.
Interview friction: Respondents answer a phone call and speak - no links, no logins, no typing required.
Analysis automation: Sentiment analysis, keyword tracking, and feature-level reports generated automatically from every voice interview.
“We went from text surveys that nobody finished to AI phone interviews that people actually enjoy. The voice agents handle the entire conversation, and the analytics tell us what we need to know without reading a single transcript.”
The Challenge
The existing text-based interview format required respondents to read emails, click links, and type answers manually - limiting participation to tech-savvy users and producing low completion rates across broader audiences like HR teams and business owners.
Distribution relied entirely on email, which meant interviews competed with crowded inboxes. There was no fallback for unreachable recipients, no retry mechanism, and no way to conduct interviews over voice - the most natural communication channel for qualitative research.
Reporting was basic and manual. Researchers received raw text responses with no sentiment analysis, no keyword extraction, and no way to compare responses at the feature or theme level - making large-scale interview analysis time-consuming and subjective.
The platform needed to scale globally, handling different time zones, phone number formats, and telecom carriers without requiring respondents to install anything or create an account.
What We Built
Built fully automated outbound phone calls using AI voice agents powered by ElevenLabs, where respondents simply answer the phone and speak - zero friction, zero setup, zero technical knowledge required.
Implemented SMS broadcast distribution with intelligent retry logic for failed calls, for maximum reach across time zones and carriers without manual follow-up from researchers.
Added sentiment analysis and keyword tracking that automatically processes every voice interview, extracting themes, emotional tone, and feature-level mentions into structured reports - replacing hours of manual transcript review.
Developed a feature-level analytics dashboard where researchers, HR teams, and business owners can compare responses across cohorts, track keyword frequency, and export ready-to-use summaries.
Related Work
AI voice agents use text-to-speech and speech recognition to have natural conversations over the phone. The system places outbound calls, asks questions, listens to responses, and follows up with contextual probes - all without human intervention. Respondents experience a conversational interview, not a robocall with button prompts.
Next Step
One call with a founder. No sales team, no follow-up sequence. If we can't help, we'll say so.