Sr. Application Developer

TEKsystems•Agoura Hills, CA

1d•Onsite

About The Position

We’re hiring a Application Developer to join a fast‑growing Communication Platforms organization building next‑generation conversational and telephony experiences used by customers at scale. This team owns mission‑critical systems across voice, SMS, virtual agents, and contact‑center integrations, and plays a direct role in shaping how customers interact with the business. You’ll join a small, high‑impact Natural Language & Automation (NLA) team—a tight‑knit group where each engineer has meaningful ownership. In this role, you’ll help design and build real‑time, AI‑driven conversational systems that stream live voice, understand caller intent, intelligently route interactions, and seamlessly blend human and virtual agents. This is a true full‑stack role with deep exposure to telephony, conversational AI, cloud infrastructure, and hands‑on DevOps. Prior telephony experience is a plus, but not required—strong engineering fundamentals, curiosity, and the ability to learn complex real‑time systems are highly valued.

Requirements

Full‑stack engineering experience with strong system design instincts
Hands‑on backend development using Golang and/or Python
Experience with distributed, real‑time, event‑driven, or low‑latency systems
Strong experience with AWS and Kubernetes (EKS) and comfort owning DevOps responsibilities
Proven ability to build, support, and troubleshoot production‑grade systems
Curiosity, resilience, and enthusiasm for learning complex domains such as telephony and conversational AI
Modern web development with JavaScript, TypeScript, and React
API design and backend services development
Experience with NoSQL databases (MongoDB or similar)
CI/CD pipelines, Docker, and cloud‑native development practices

Nice To Haves

Experience with VoIP / telephony systems
FreeSWITCH development experience
Event‑driven architectures and streaming systems
Linux systems experience
Infrastructure as Code (Chef, AWS CDK, Troposphere)
OAuth2 / authentication & authorization flows
CRM integrations
Exposure to conversational AI, prompting strategies, or real‑time AI systems
Experience working in Agile / Scrum environments

Responsibilities

Design, build, and maintain high‑availability, enterprise‑grade applications supporting real‑time voice and conversational AI use cases
Develop AI‑powered virtual agents that: Understand why a customer is calling, Determine call disposition (routing, callbacks, human handoff), Operate with low latency for natural, human‑like interactions
Stream and process live voice data in responsive, resilient, and scalable systems
Build internal tools for prompting strategies, call analytics, workflows, and orchestration
Collaborate closely with product, analytics, and engineering partners
Work across telephony services, contact‑center platforms, SMS, and conversational workflows
Own services end‑to‑end, including: System design and architecture, Development and testing, Deployment, monitoring, and production support
Operate in a team‑owned DevOps environment, including AWS and Kubernetes (EKS)
Troubleshoot and resolve high‑impact production issues with confidence and clarity
Contribute to a culture that values ownership, collaboration, and high technical standards