Senior Full Stack Developer

TheSenior Full Stack Developeris a hands-on role within theSalesSuperStar AIteam focused on building the core systems that power our AI-driven Custom Agent and integrated Light CRM platform. This role is critical to the development of a fast-moving mission-critical MVP ensuring that frontend backend integrations and platform workflows come together in a scalable reliable and production-ready environment.

You will work across a cross-functional team that includesAI/ML Engineering TelephonyDevOpsQA andFull Stack development.Reporting to the Team Leader you will play a central role in translating product and technical requirements into working systems helping architect and deliver the platform from the ground up.

Success in this role requires strong full stack development capability technical fluency across modern web and backend systems experience with real-time and integrated platforms and the ability to work effectively in a complex fast-evolving environment.

Job Description Senior Full Stack Developer AI Digital Platform

Position Overview

We are building a next-generation AI Digital Platform that combines voice-enabled conversational AI telephony integration and a lightweight CRM into one seamless system. This is a high-impact hands-on role where youll help architect and build production-grade systems that span AI real-time telephony and modern SaaS web applications.

Role Overview

As a Senior Full-Stack Developer you will take ownership of critical components across our stack from the CRM frontend/backend to the AI management orchestration system and its integrations. You will collaborate closely with our AI/ML engineers who focus onSTT LLM and TTS modelsas well as our infrastructure team ensuring that data APIs and workflows are robust scalable and reliable. You will thrive if you enjoy working in high-

performance real-time systems and have experience bridging frontend usability with backend orchestration.

Key Responsibilities

Backend & API Development

• Build and maintain FastAPI/ services powering the AI Management System including call orchestration dialogue state and outcome extraction.
• Design clean REST APIs and Webhooks for CRM telephony and automation integrations for example n8n.
• Implement robust data models in PostgreSQL and caching/queuing via Redis.

Frontend & CRM Development

• Lead development of the CRM operator console using React/.
• Create dashboards for lead management call outcomes and campaign analytics.
• Ensure intuitive UI/UX for sales teams monitoring AI calls.

Systems Integration

• Integrate backend services with telephony platforms such as Asterisk FreeSWITCH SignalWire and Twilio
• Connect AI pipeline outputs including STT LLM and TTS to CRM outcomes.
• Implement flexible adapters for direct CRM API connections and workflow automation via n8n.

Scalability & Observability

• Optimize system performance for high-volume concurrent calls.
• Implement monitoring logging and alerting with Prometheus Grafana and Sentry.
• Ensure fault tolerance and horizontal scalability of orchestration and web services.

Collaboration & Leadership

• Work closely with AI developers including those focused on LLM and speech models to ensure seamless integration.
• Participate in architectural reviews code reviews and mentoring junior developers.
• Contribute to the technical roadmap and best practices for CI/CD testing and security.

Key Qualifications Must Have

• 7 years of full-stack development experience.
• Strong expertise in Python and/or including FastAPI Proficiency in React/ for frontend web applications.
• Solid experience with PostgreSQL and Redis including queues caching and pub/sub messaging (e.g. Kafka RabbitMQ or similar)
• Proven ability to design build and scale REST APIs and distributed systems.
• Familiarity with telephony stacks such as Asterisk FreeSWITCH SignalWire or Twilio.
• Experience integrating external SaaS APIs including CRMs and automation tools.
• Experience supporting custom AI agent development including RAG architectures prompt and context orchestration memory frameworks
• Experience evaluating and improving LLM outputs including prompt iteration response quality assessment and basic evaluation frameworks

Nice to Have

• Experience deploying and running open-weight LLMs (e.g. LLaMA) locally using tools like vLLM Ollama or similar inference frameworks
• Familiarity with lightweight fine-tuning techniques (e.g. LoRA / QLoRA) and tools like Hugging Face Transformers / PEFT
• Prior experience building high-throughput sales or communications platforms. Familiarity with feature flagging A/B testing and experimentation frameworks.

Understanding DevOps in cloud environments such as AWS or Azure; Docker and Kubernetes are a plus.

Closing Profile

This role is for someone who thrives in building complex systems end-to-end enjoys solving real-time distributed challenges and wants to see their work directly power a live AI sales platform.

Diversity & Accessibility

At OWE we believe that diverse perspectives fuel innovation. We are committed to fostering an inclusive environment that values equity and accessibility. If you require accommodations at any stage of the hiring process please contact us at well be happy to assist.