Lex Senior Developer/Technical Lead

Posted Wednesday, July 15, 2026 at 4:00 AM We are looking for a Lex Senior Developer/Technical Lead. Key Responsibilities Build enterprise-grade Amazon Lex bots from requirements gathering through production deployment. Design high-performing voice and chat conversational experiences. Integrate Amazon Lex with Amazon Connect and AWS serverless services. Analyze production conversations to improve intent recognition, bot performance, and customer experience. Lead a small development team while remaining hands-on with coding, troubleshooting, testing, and optimization. Conversational AI Development Create scalable intent models, custom slot types, prompts, and dialog-management strategies. Optimize natural language understanding performance through continuous tuning based on production traffic and conversation data. Develop multilingual conversational experiences, with English and French experience preferred. Design robust fallback, clarification, interruption, escalation, and error-handling strategies. Apply conversational design and prompt-engineering principles to improve customer interactions. Required Skills and Experience 6 to 10 years of software development experience. Minimum 3 years of hands-on Amazon Lex V2 development experience. Minimum 3 years of experience integrating Amazon Lex with Amazon Connect. Strong experience designing and developing AWS serverless architectures. Experience leading developers while remaining actively involved in technical delivery. AWS Associate-level or Professional-level certification is preferred. Mandatory Amazon Lex Technical Skills Amazon Lex V2 Intent and slot modelling Custom slot types Dialog management Session attributes AWS Lambda code hooks Prompt variations DTMF integration Confidence-score tuning Multilingual bot development Mandatory AWS Development Skills AWS Lambda Amazon DynamoDB Amazon API Gateway Amazon Connect Amazon Bedrock experience is preferred Preferred Artificial Intelligence Knowledge Intent classification Entity recognition Prompt engineering Conversational design Natural language processing and natural language understanding concepts Generative AI fundamentals Amazon Bedrock