Voice AI Consultant

Symphony Solutions is a Cloud- and AI-driven technology company headquartered in the Netherlands, delivering world-class services and innovative products. They have a remote-first mindset with a global presence spanning over 20 countries. The company provides custom solutions for Airline, Healthcare, iGaming, E-learning, e-Commerce, and Supply Chain sectors.

• Experience working with containerized AI workloads on AWS
• Familiarity with key components: Cursor, Open AI, Twillio, 11 Labs, gpt-4.0-mini, S3, Amazon Connect, KVS (voice), Swagger, Open AI tools
• Experience with Postgres database
• Ticket management system: Linear
• Proficiency in TypeScript/JavaScript for real-time web/edge integrations
• Knowledge of natural language processing libraries and speech processing toolkits, including deep learning libraries such as PyTorch, TensorFlow
• Experience with speech recognition APIs such as Amazon Transcribe
• Familiarity with voice synthesis engines like Amazon Polly, Text-to-Speech
• Knowledge of version control systems (GitHub), CI/CD pipelines, and containerization (Docker) highly valued
• Understanding of real-time communication protocols: WebSockets, gRPC, and WebRTC

AI Requirements:

• Manage realtime/streaming LLM sessions: latency, interruption handling, turn-taking, graceful degradation when model or connection drops
• Design prompt and system-message for constrained, task-specific voice agents
• Extract sentiment/outcome from completed calls and validation methods

• Audit the existing Twilio ↔ Realtime-AI call bridge (media streams, ConversationRelay) and the two-way contracts with the AWS-hosted platform (inbound invokes, outbound callbacks, retries, reconciliation)
• Assess production-readiness of the voice service — health checks, capacity limits, alerting, incident response — and identify gaps
• Review the AI/session logic driving calls, along with related routes, background jobs, and schema
• Deliver a findings report and a prioritized implementation roadmap
• Provide part-time advisory support through implementation: review architectural/technical decisions, guide webhook-contract and telephony-integration design, and consult on production operability practices

Only candidates located in Poland.