MAYANK JAIN

AI & GenAI Architecture (LLMs, MCP, Orchestration)

• Built enterprise GenAI and LLM integration frameworks using Model Context Protocol (MCP) plus Python and Java orchestration layers to connect proprietary enterprise data securely with large language models.
• Developed retrieval-augmented generation (RAG) pipelines and vector database integrations to improve LLM context precision and reduce hallucinations for domain-specific enterprise queries.
• Drove prototyping and integration of AI automation agents within distributed backend systems to streamline workflow automation, intelligent decisions, and code quality review.

Enterprise Architecture & Distributed Systems (Java, Spring Boot, Kafka)

• Set architecture direction for scalable, high-throughput microservices using Java, Spring Boot, and Spring Cloud, and established enterprise design standards.
• Designed event-driven streaming architectures with Apache Kafka to support fault tolerance, service decoupling, and lossless messaging across enterprise domains.
• Improved transaction pipelines, database schemas, and caching strategies across multi-database environments to support high concurrency, low latency, and ACID compliance.

Cloud Infrastructure, DevOps, & Infrastructure as Code (Terraform, K8s, Docker)

• Directed cloud modernization through immutable, multi-region infrastructure design on cloud platforms with Terraform and container orchestration using Docker and Kubernetes.
• Implemented automated CI/CD pipelines, security scans, and zero-downtime release practices to speed feature delivery while meeting strict compliance.

Full Stack & Frontend Engineering (React)

• Architected and developed responsive, high-performance single-page applications (SPAs) using React, Redux, and modern JavaScript/TypeScript, delivering seamless user experiences across devices.
• Engineered reusable, modular component libraries and integrated complex RESTful APIs from Java backend services, ensuring efficient state management and optimized rendering.
• Implemented client-side input validation, error boundaries, and secure authentication flows (JWT/OAuth2) to safeguard user sessions and enhance frontend security.

Backend, Microservices & Event-Driven Architecture (Java, Spring Boot, Kafka)

• Designed and built scalable, enterprise-grade distributed microservices using Java, Spring Boot, and Spring Cloud, powering core backend business logic.
• Implemented high-throughput, asynchronous event-driven pipelines using Apache Kafka for real-time data streaming, event decoupling, and reliable cross-service communication.
• Integrated secure third-party payment gateways and transactional workflows with strict idempotency, fault tolerance, and comprehensive error handling.

Database Design & Data Layer Optimization (SQL)

• Designed, optimized, and maintained relational database schemas using SQL (PostgreSQL/MySQL), writing complex complex joins, window functions, and stored procedures for high-volume transactional data.
• Tuned database query performance, indexed critical tables, and integrated Spring Data JPA / Hibernate caching strategies to drastically reduce data retrieval latency.
• Ensured transactional integrity and ACID compliance across distributed microservices handling concurrent database writes and reads.

Backend & Microservices (Spring Boot & Kafka)

• Architected and developed scalable distributed microservices using Java, Spring Boot, and Spring Cloud, handling high-throughput asynchronous event processing with Apache Kafka.
• Designed and implemented secure RESTful APIs and integrated payment gateway workflows (e.g., Razorpay integration) with robust error handling, transactional consistency, and idempotent design patterns.
• Optimized database interactions and query performance using Spring Data JPA/Hibernate, improving transaction latency across core backend services.

Cloud Infrastructure & DevOps (Docker, Kubernetes, Terraform)

• Containerized Java microservice applications using Docker and orchestrated deployments across multi-node Kubernetes clusters, ensuring high availability, rolling updates, and automated scaling.
• Provisioned and managed immutable cloud infrastructure on AWS using Terraform (Infrastructure as Code), reducing manual provisioning errors and standardizing environment setups.
• Configured and maintained CI/CD pipelines (Jenkins/GitHub Actions) to automate build verification, container image scanning, and zero-downtime deployments to staging and production environments.

Framework Architecture & Design

• Architected and maintained a scalable hybrid test automation framework from scratch using Java, Selenium WebDriver, and TestNG, reducing manual testing effort by 50%.
• Implemented the Page Object Model (POM) and Page Factory design patterns to maximize code reusability and minimize maintenance across 10+ complex web pages.
• Developed Behavior-Driven Development (BDD) frameworks using Cucumber (Gherkin) and Java, aligning technical test cases with business requirements.
• Managed project dependencies, build lifecycles, and test execution using Maven, streamlining the setup process for new team members.
• Integrated reporting tools like ExtentReports and Log4j to generate detailed, visually comprehensive test execution and failure analysis reports for stakeholders.

Test Execution & CI/CD

• Engineered and executed automated UI and functional test scripts for dynamic web applications, increasing overall test coverage by 30%.
• Integrated Selenium automated suites into CI/CD pipelines using Jenkins, triggering builds automatically upon code commits and enabling continuous testing.
• Configured Selenium Grid alongside TestNG to execute parallel and cross-browser testing (Chrome, Firefox, Edge), cutting total test execution time by 60%.
• Maintained version control of automation scripts using Git and GitHub/Bitbucket, conducting peer code reviews to ensure coding standards were met.
• Handled complex dynamic web elements, IFrames, multiple windows, and synchronization issues using Selenium WebDriver's Implicit and Explicit waits.

Agile Collaboration & Quality Assurance

• Collaborated in an Agile/Scrum environment, participating in sprint planning, daily stand-ups, and sprint retrospectives to deliver tested features on time.
• Identified, logged, and tracked software defects using Jira, working directly with developers to reproduce and resolve critical bugs before production releases.
• Conducted rigorous regression testing prior to major releases, ensuring zero critical defects leaked into the production environment over 50 consecutive releases.

Backend & API Integration

• Developed automated backend tests using Java and RestAssured to validate RESTful APIs (GET, POST, PUT, DELETE) and JSON responses.
• Created end-to-end test scenarios bridging frontend Selenium tests with backend database validations using JDBC to ensure data integrity.