AWS Lex SME

About Position :

We are looking for a dedicated Amazon Lex SME with hands-on experience in designing, configuring, and deploying conversational AI experiences using Amazon Lex V2. This role is central to a platform migration initiative and requires deep expertise in building scalable, production-grade Lex bots. The ideal candidate should be comfortable owning the full lifecycle of Lex bot development—from intent and slot design to deployment and testing.

Role : AWS Lex SME

Location : All Persistent Locations

Experience : 6 to 10 Years

Job Type : Full Time Employment

What You'll Do :

Defining intents, utterances, and slots

Setting up multi-turn conversations

Managing session attributes, context control, and fallback strategies

Lead the migration of existing bots or workflows from other platforms into Lex V2, ensuring functional completeness and improved user experience.

Configure Amazon Lex Knowledge Bases and manage dynamic document sources (e.g., S3, SharePoint, secure portals).

Handle Lex bot versioning, aliasing, and promotion across environments (Dev, QA, Prod).

Leverage Lex's native integrations with Lambda, Amazon Connect, and Cognito to deliver advanced conversational flows.

Optimize language model performance using analytics and real-user feedback.

Work closely with frontend, QA, and API teams to ensure successful Lex integration and functionality across platforms.

Document design decisions, flow diagrams, and deployment processes for maintainability.

Expertise You'll Bring :

Extensive hands-on experience with Amazon Lex V2

Custom intent and slot configuration

Multi-turn conversations and context management

Fallback and clarification handling

Strong understanding of Lex console and API interfaces

Experience integrating Lex with :

AWS Lambda for dynamic responses

Amazon Cognito for user authentication

Amazon Connect for voice interactions

Knowledge of REST APIs, API Gateway, and JSON payload handling

Familiarity with Lex Knowledge Base setup

Exposure to logging and monitoring via CloudWatch

Awareness of security and access control for bot workflows

Experience in chatbot deployment across web and mobile channels

Understanding of LLM / GenAI services (e.g., Bedrock) is a plus

Clear verbal and written communication

Proactive ownership of deliverables

Ability to work independently and in cross-functional teams

Strong problem-solving and debugging skills

Benefits :

Competitive salary and benefits package

Culture focused on talent development with quarterly promotion cycles and company-sponsored higher education and certifications

Opportunity to work with cutting-edge technologies

Employee engagement initiatives such as project parties, flexible work hours, and Long Service awards

Annual health check-ups

Insurance coverage : group term life, personal accident, and Mediclaim hospitalization for self, spouse, two children, and parents

Values-Driven, People-Centric & Inclusive Work Environment :

Persistent Ltd. is dedicated to fostering diversity and inclusion in the workplace. We invite applications from all qualified individuals, including those with disabilities, and regardless of gender or gender preference. We welcome diverse candidates from all backgrounds.

We support hybrid work and flexible hours to fit diverse lifestyles.

Our office is accessibility-friendly, with ergonomic setups and assistive technologies to support employees with physical disabilities.

If you are a person with disabilities and have specific requirements, please inform us during the application process or at any time during your employment

Let’s unleash your full potential at Persistent - persistent.com / careers

“Persistent is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind.”