We’re hiring! At Cognizant we have an ideal opportunity for you to be part of one of the largest companies in the digital sector worldwide. A Great Place To Work where we look for people who contribute new ideas, experiencing a dynamic and growing environment.

At Cognizant we promote an inclusive culture, where we value different perspectives providing career growth and development opportunities. #WelcomeToCognizant! We have an exciting opportunity for an exceptional individual to work supporting one of our clients as Fullstack Developer Experience: 5 - 8 Years Role Summary We are seeking a Technical Lead / Senior Engineer with strong expertise in Node.js, ReactJS, AWS Cloud, and Generative AI technologies. The ideal candidate should possess a solution-oriented mindset, drive architecture and design decisions, lead engineering teams, and deliver scalable AI-enabled digital solutions.

Must-Have Skills 10–12 years of experience in Full Stack Application Development

Expertise in Node.js, JavaScript (ES6+), TypeScript

Strong hands-on experience with ReactJS, Redux, Hooks, and modern UI frameworks

Experience in designing and developing REST APIs, GraphQL APIs, and Microservices

Strong knowledge of AWS Cloud Services (Lambda, API Gateway, S3, DynamoDB, CloudFront, Cognito)

Experience with Serverless Architecture, CloudFormation, and CI/CD pipelines

Strong solutioning, architecture, and technical leadership experience

Experience mentoring development teams and conducting design/code reviews AI / GenAI Skills (Must Have / Preferred) Experience integrating LLMs such as OpenAI GPT, Azure OpenAI, Claude, or Amazon Bedrock

Knowledge of Prompt Engineering and AI application design patterns

Experience building AI-powered chatbots, copilots, or intelligent assistants

Understanding of RAG (Retrieval-Augmented Generation) architectures

Experience integrating AI services through APIs and SDKs

Familiarity with Vector Databases (Pinecone, OpenSearch, Weaviate, ChromaDB, etc.)





Knowledge of AI security, governance, responsible AI, and model evaluation Key Responsibilities Lead the design and development of full-stack and AI-enabled applications.

Define architecture, technical roadmaps, and engineering best practices.

Build scalable backend services using Node.js and responsive UIs using ReactJS.

Design and implement GenAI solutions leveraging LLMs, RAG, and vector search.

Collaborate with business stakeholders to translate requirements into technical solutions.

Drive cloud-native deployments, performance optimization, security, and observability.

Mentor engineers and provide technical leadership across delivery teams. Nice to Have AWS Bedrock, LangChain, LangGraph, Semantic Kernel

Docker, Kubernetes, EKS

Event-Driven Architecture

AWS AppSync, CloudWatch, X-Ray

MLOps and AI model monitoring Why Cognizant? Improve your career in one of the largest and fastest growing IT services providers worldwide Receive ongoing support and funding with training and development plans Have a highly competitive benefits and salary package Get the opportunity to work for leading integral companies We are committed to respecting human rights and build a better future by helping your minds and the environment We invest in people and their wellbeing. We create conditions for everyone to thrive.

We do not discriminate based on race, religion, color, sex, age, disability, nationality, sexual orientation, gender identity or expression, or for any other reason covered.

Igualdad de Empleo y Política de Acción Afirmativa: Cognizant es un empleador que ofrece igualdad de oportunidades. Todos los solicitantes calificados recibirán consideración para el empleo sin distinción de sexo, identidad de género, orientación sexual, raza, color, religión, origen nacional, discapacidad, estado de veterano protegido, edad o cualquier otra característica protegida por la ley. At Cognizant we believe than our culture make us stronger!

Join us now! #BeCognizant #IntuitionEngineered

📌 Fullstack Developer (Ciudad de México)
🏢 Cognizant
📍 Ciudad de México