Sayanee Basu
Bengaluru
Summary
Senior Full Stack Developer with 4 years of experience specializing in backend architecture and 15 years of total expertise in enterprise software engineering. Proven track record of evolving legacy Mainframe and Pega environments into modern, cloud-native full-stack solutions. Expert in designing high-concurrency microservices, scalable APIs, and robust database schemas while maintaining strict enterprise security standards.
Overview
15
15
years of professional experience
Work History
Project Lead
Coforge
10.2024 - 03.2026
- Designed and implemented robust microservices using Node.js to accommodate high-traffic web applications while maintaining 99.9% uptime.
- Designed and optimized relational and non-relational database schemas (SQL/NoSQL), improving query performance by 20% through indexing and caching strategies.
- Developed and documented secure, versioned RESTful or GraphQL APIs for consumption by internal and external frontend consumers.
- Integrated third-party services and payment gateways (e.g., Stripe and AWS services) to extend application functionality.
- Mentored a team of 5 junior developers through code reviews and technical workshops, promoting Best Practices in CI/CD and TDD.
Lead Analyst
CGI
01.2024 - 06.2024
- Implemented responsive user interfaces with React and Redux, improving user engagement by 20% and ensuring cross-browser compatibility.
- Collaborated with cross-functional teams to define, design, and ship new features within agile workflows.
- Built a scalable RESTful API using Express.js and PostgreSQL, serving 50+ endpoints with 99.9% uptime and handling 1000+ requests per second.
Team Lead
Tech Mahindra
06.2021 - 12.2023
- Developed responsive, user-facing features using React, ensuring seamless state management and optimized rendering performance.
- Collaborated with UI/UX designers to translate wireframes into functional, accessible code (WCAG compliance).
- Mentored junior developers through code reviews and technical workshops, promoting best practices in Clean Code and Test-Driven Development (TDD).
- Lead DevOps initiatives, configuring CI/CD pipelines (Jenkins, GitHub Actions) and containerizing applications with Docker to streamline deployment.
- Authored technical documentation and system architecture diagrams to facilitate cross-team understanding of complex integrations.
Senior System Analyst
UST Global
11.2019 - 06.2021
- Designed and implemented Complex Enterprise Class Structures (ECS) to ensure maximum rule reusability across multiple business lines and jurisdictions.
- Led the design of Case Management workflows, including complex parent-child case relationships, split-joins, and wait shapes to automate end-to-end business processes.
- Architected seamless integrations using Connect-REST to interface Pega applications with external systems and modern cloud services.
- Developed robust Data Pages and Data Transforms, leveraging keyed data pages and specialized sourcing to optimize data retrieval and minimize memory footprint.
- Configured complex Authentication and Security models, including Access Groups, Roles, and Attribute-Based Access Control (ABAC) to protect sensitive enterprise data.
- Enforced Pega Guardrails and best practices, consistently maintaining a compliance score of 95+ and conducting rigorous code reviews to ensure system health.
Associate
Cognizant Technologies Solutions
08.2016 - 06.2019
- Developed and configured foundational Pega rules including Properties, Data Transforms, and Activities to implement business logic.
- Built User Interface components using Sections, Layouts, and Controls within the Pega Skin to ensure a consistent user experience.
- Created Validations (Edit-Validate and Constraints) to ensure data integrity at the point of entry.
- Configured Case Types and Stages using the Case Designer to automate simple to mid-complexity business processes.
- Implemented Flow Rules and Flow Actions, utilizing decision shapes (When rules, Decision Tables) to route work to the appropriate operators or workbaskets.
- Designed Declarative Expressions (Declare Expressions, Declare OnChange) to automate calculations and UI updates without manual triggers.
- Utilized Pega debugging tools such as the Tracer, Clipboard, and Live UI to identify and resolve functional defects during development.
- Performed comprehensive Unit Testing of individual rules and end-to-end flows to ensure alignment with functional requirements.
- Assisted in Rule Migration by preparing Product Rules (RAP) and moving code across Development and QA environments.
IT Analyst
TCS
08.2010 - 08.2016
- Developed and maintained batch and online programs using COBOL, ensuring 100% accuracy in high-volume financial/data processing tasks.
- Wrote and optimized JCL (Job Control Language) to manage system resources, schedule batch jobs, and handle dataset allocations.
- Designed and executed complex DB2 queries, ensuring efficient data retrieval and updates within CICS or Batch environments.
- Developed and debugged CICS screens (BMS maps) to support real-time online transaction processing for end-users.
- Utilized TSO/ISPF and SDSF to monitor job execution, manage datasets, and navigate the mainframe environment efficiently.
- Collaborated on Version Control using tools like Endevor or Changeman to move code through Development, Test, and Production stages.
- Moved to Pega technologies from mainframe after obtaining CSA certification after 4 years
Education
Bachelor of Computer Applications - Computer Application
Skills
- Javascript
- ReactJS
- TypeScript
- SQL
- MongoDB
- NodeJS
- REST/GraphQL
- AWS
- Pega Infinity 8
- Mainframe
Timeline
Project Lead - Coforge
10.2024 - 03.2026
Lead Analyst - CGI
01.2024 - 06.2024
Team Lead - Tech Mahindra
06.2021 - 12.2023
Senior System Analyst - UST Global
11.2019 - 06.2021
Associate - Cognizant Technologies Solutions
08.2016 - 06.2019
IT Analyst - TCS
08.2010 - 08.2016
Michael Madhusudhan Memorial College - Bachelor of Computer Applications, Computer Application