Hello, I'm

Justin Santer

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Founding Forward Deployed Engineer & Agent Orchestration Lead scaling production conversational AI for enterprise

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Highlights

Lead Engineer

Studio Assistant

PolyAI Agent Studio

Agent orchestrator for building and deploying production voice and chat agents — enabling teams to design, test, and ship conversational AI entirely within PolyAI's platform.

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Key Maintainer

PolyAI ADK

Open Source

Agent Development Kit — an open-source framework for building production-grade conversational AI agents on PolyAI's platform, providing the tools and primitives teams need to go from prototype to enterprise deployment.

View on GitHub

About Me

Founding Forward Deployed Engineer leading the Agent Deployment team at PolyAI, a Series D company valued at $750M, scaling production voice AI solutions for enterprise customers on a market-leading conversational AI platform.

I sit at the intersection of AI engineering and enterprise deployment — translating cutting-edge language model capabilities into reliable, low-latency voice AI systems that handle real customer interactions at scale.

90+ Engineers Led
50+ Voice AI Agents
$750M Company Valuation
5+ Years in AI
$40M+ ARR Generated

Experience

Staff Forward Deployed AI Engineer

PolyAI

Aug 2025 – Present New York, NY
  • Top technical leader within a global team of 90+ forward deployed and agent design engineers
  • Lead Agent Orchestration team of 5, building an agentic pipeline to produce conversational AI assistants autonomously using Agent SDK frameworks
  • Facilitate collaboration with C-suite co-founders to optimize the deployment lifecycle across the entire Agent Deployment team
  • Contributed to the design of 10+ major product features including self-serve SIP and API integrations
  • Establish best practices across the 5 main latency domains: STT VAD LLM TTS Tool Execution

Senior Forward Deployed AI Engineer

PolyAI

Sep 2024 – Jul 2025 New York, NY
  • Led end-to-end deployment for 5+ high-revenue enterprise POCs, successfully converting into contracts
  • Wrote the company's SIP interoperability playbook for Amazon Connect, Genesys Cloud, NICE InContact, Five9, Zendesk, and more — enabling deployments within 2 weeks
  • Drove latency reduction by optimizing Lambda functions, prompt token caching, and VAD for real-time AI systems
  • Managed and mentored a regional team of 7+ North America-based engineers

Software Engineer

PolyAI

Sep 2022 – Aug 2024 New York, NY
  • Delivered 20+ voice AI agents tailored to enterprise needs via SIP and API integrations
  • Designed a reusable API connector library enabling new integrations within 7 days
  • Built an internal call simulation tool that cut QA time from 10 minutes to 30 seconds

Application Developer

Converge Technology Solutions

Jun 2021 – Aug 2022 New York, NY
  • Contributed 100+ commits to the Zowe ZEBRA open source project, modernizing Mainframe performance metrics
  • Integrated Zowe ZEBRA into the company's proprietary enterprise voice assistant
  • Refactored LAMP stack timesheet application used by 50+ consultants to support a new invoicing system

Skills

Languages

Python Go TypeScript C++ Java Bash / Shell SQL

Cloud & Infrastructure

AWS Lambda ECR / ECS EC2 / EKS S3 DynamoDB Docker Kubernetes PostgreSQL Redis Terraform GitHub Actions

Voice & Protocols

SIP RTP Kamailio Asterisk Twilio Amazon Connect Genesys Cloud WebRTC WebSocket TLS / TCP / UDP REST gRPC SOAP

AI & Tools

Claude Agent SDK OpenAI Agents SDK OpenAI API Pi AI Vercel AI SDK LLM Optimization Prompt Engineering Token Caching RAG Intent Classification Function Calling / Tool Use Multi-turn Dialogue Design Vector Databases STT / TTS / VAD Agentic Pipelines

Education

Bachelor of Science

Computer Science / Applied Mathematics & Statistics

Stony Brook University — Stony Brook, NY

2021
Magna Cum Laude Dean's List University Scholars Program

Get In Touch

Interested in collaborating or just want to say hello? I'd love to hear from you.

jsanter.dev@gmail.com (845) 637-0635 LinkedIn GitHub