Mid-Level Voice AI Developer

Tekfortune is a fast-growing consulting firm specialized in permanent contract & project-based staffing services for worlds leading organizations in a broad range of this quickly changing economic landscape virtual recruiting and remote work are critical for the future of work. To support the active project demands and skills gaps our staffing experts can help you find the best job for you.

Position : Mid-Level Voice AI Developer
Location: Dallas TX Onsite Only

Interview: 2 Round of face to face interview

Role Overview
We are seeking an on-site Mid-Level Voice AI Developer with 5 to 8 years of experience to join our team in North this role you will own the technical execution of our voice automation stack focusing on building high-performing inbound/outbound sales/scheduling and customer service agents. Deep hands-on production experience with Retell AI is a strict requirement. You will design and implement the logic state machines and API integrations that allow our voice agents to resolve client issues handle real-time calendars and drive outbound growth initiatives.

Key Responsibilities

• Retell AI Agent Architecture: Build test and deploy production-grade inbound and outbound voice agents using the Retell AI platform SDKs and custom LLM WebSockets.
• Sales & Scheduling Integration: Connect voice agents directly to scheduling APIs (e.g. Calendly custom CRMs and apps) to allow agents to pull availability book appointments and process cancellations live on a phone call.
• Low-Latency Loop Optimization: Fine-tune Retell setups to achieve ultra-low latency minimizing dead air and handling human interruptions naturally during fluid sales and support conversations.
• Data & CRM Synchronization: Ensure call outcomes reservation data and customer notes are instantly and accurately synced with our internal databases and CRM via webhooks and REST APIs.
• Prompt & State Engineering: Write test and refine structured LLM prompts to enforce business compliance overcome customer objections in sales flows and handle edge cases gracefully.
• Analytics & Quality Monitoring: Analyze Retell call logs and audio records to track key performance indicators (KPIs) like call resolution booking conversion rates and latency drops.

Required Qualifications & Skills

• Experience: 4 to 5 years of software engineering experience with a heavy track record of creating and implementing interactive production-level voice agents.
• Platform Core: Proven hands-on production experience building with Retell AI. You must be comfortable overriding default configurations and handling custom backend triggers.
• Technical Stack: Advanced proficiency in Lambda Python experience with AWS services experience with Databases specializing in asynchronous programming for real-time streaming data.
• APIs & Telephony: Extensive experience working with RESTful APIs webhooks and telephony platforms like Twilio (handling numbers outbound triggers and call routing) and Vonage.
• Location : Must be able to work full-time on-site at our office in North Dallas.

Preferred Qualifications

• Local to the Dallas-Fort Worth metroplex with an understanding of regional telephony routing.
• Experience building guardrails to handle sensitive customer service data securely.
• Previous experience optimizing high-volume outbound dialers tied to AI agents.

For more information and other jobs available please contact our recruitment team at . To view all the jobs available in the USA and Asia please visit our website at

Required Experience:

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