Sr. Full Stack Engineer, AI Voice Platform

Sr. Full Stack Engineer, AI Voice Platform 1 day ago Be among the first 25 applicants This range is provided by Hillmont Group. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base Pay Range $200,000.00/yr - $240,000.00/yr Additional Compensation Types Annual Bonus Direct message the job poster from Hillmont Group Executive Search for Mid-Market Firms | Emerging Tech & Transformation Talent | Culture-First. Execution-Ready. | Partner to Executives & PE Firms |… We’re hiring an Sr. Full Stack Engineer to own the end-to-end platform powering an AI voice assistant, Salesforce integrations, and email automation services. You’ll lead architecture, reliability, and delivery across multiple business‑critical systems, spanning Node.js orchestration, Salesforce services, and AWS serverless infrastructure. As the domain grows, this role will expand into building and leading a small engineering team. Responsibilities AI Voice Orchestration (Node/TypeScript): Lead development of our outbound calling scheduler, orchestration services, webhook handling, ElevenLabs integration, and real‑time warm‑transfer notifications. Salesforce Services (C#/.NET): Own SOQL/REST integrations, composite APIs, record search/update logic, and token/auth flows for all Salesforce‑backed workflows. Email Automation: Maintain and evolve pipelines that trigger outbound email workflows based on Salesforce record updates and submission logic. Reliability & Operations: Improve latency, idempotency, retries/backoff, logging, monitoring, and error handling across Lambda functions and services. Architecture: Shape our event‑driven AWS architecture. Driving design decisions, standards, and long‑term platform evolution. Cross‑functional alignment: Collaborate with Salesforce admins, sales, operations, and product to translate business rules into robust, maintainable systems. Technical leadership: Set code standards, review high‑impact changes, document systems clearly, mentor engineers, and hire as the team expands. Skill Requirements 7+ years backend engineering experience owning production systems end‑to‑end. Strong proficiency in Node.js/TypeScript and/or C#/.NET with willingness to work across both. Hands‑on AWS experience (Lambda, API Gateway, DynamoDB, CloudWatch). Deep experience integrating with third‑party APIs, especially Salesforce (SOQL/REST/OAuth). Strong fundamentals in debugging, performance tuning, async workflows, and distributed system behavior. High ownership and comfort leading a mission‑critical platform. Bonus Skills Experience with telephony/voice APIs (Twilio, ElevenLabs). Email systems (SendGrid, SES) and CRM‑driven journeys. Real‑time communication systems (WebSockets, push notifications). Seniority Level Mid‑Senior level Employment Type Full‑time Job Function Information Technology Referrals increase your chances of interviewing at Hillmont Group by 2x Benefits Implied Medical insurance 401(k) Get notified about new Full Stack Engineer jobs in New York, NY. #J-18808-Ljbffr