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Divyanshu Pal
Software Engineer (Full Stack Developer)
Summary
Innovative Full-Stack Software Engineer with over 4 years in Java/Spring Boot and React.js development for edtech and fintech. Specializes in payment workflows, SSO systems, and API performance optimization. Experienced in SQL optimization and JWT-based authentication. Skilled in AWS EC2, Docker, Redis, Kafka, and LLM APIs to streamline operations and minimize manual tasks.
Overview
4
4
years of professional experience
2
2
Certification
Work History
Product Engineer (Full Stack Developer)
Tata Consultancy Services
02.2022 - 04.2026
- Optimized critical API flows and database queries under high-load conditions, significantly reduced p95 response time from ~2.1s to ~900ms during peak assessment traffic by optimizing joins and adding DB indexes.
- Implemented SSO-based role switching using token refresh and session revalidation, allowing users to switch roles without re-authentication while maintaining session consistency across modules and improving workflow efficiency by ~30%.
- Developed revenue reporting module with dynamic pricing, effort metrics, multi-currency support, and configurable filters, optimizing query execution to minimize database load and enhance reporting accuracy.
- Integrated Razor pay payment gateway with custom audit logging to improve payment traceability by ~40% and implemented automated scheduler for transaction reconciliation, ensuring timely financial reporting.
- Built dynamic PDF/Excel reporting modules with configurable filters, cutting manual report generation effort significantly by 70%.
- Designed and built institution management dashboard featuring KPI visualizations, advanced filtering, user management, and real-time status updates and real-time search functionality using debouncing technique, streamlining administrative processes and enhancing data accessibility.
- Developed Section-Wise marking module with real-time progress tracking and deep-link navigation to any section reducing user-efforts by 80%.
- Enhanced annotation system - insert/delete comments with predefined icons - reducing review cycle time by ~15%.
- Automated regression and end-to-end testing workflows using reusable test suites and validation scripts, reducing deployment verification time by ~40% and improving release stability.
- Diagnosed and patched payment reconciliation mismatches caused by delayed scheduler execution and stale Redis cache entries, reducing finance escalation incidents during monthly settlement cycles.
- Eliminated SQL injection vulnerabilities across the codebase by migrating raw queries to prepared statements with input whitelisting, achieving zero security incidents post-release.
- Implemented OS/browser-level screenshot protection for sensitive PII and PFI data, ensuring compliance without impacting user experience.
- Used Gemini,Claude and GitHub Copilot to generate boilerplate APIs, validation layers, and test scaffolding, reducing repetitive setup work during feature implementation and bug fixing.
Education
B.Tech - Mechanical Engineering
10-2021
- First Division with Hons.
Skills
Backend: Java, Spring Boot, Nodejs, REST API Design and integration, JWT/OAuth2 Security,JPA/Hibernate, Redis cache management
Frontend: Reactjs, JavaScript (ES6), HTML5, CSS3, Responsive UI design, Component Architecture, AJAX, Jquery,React Context API
Tools: Git/SVN, Postman, IntelliJ IDEA,VS Code, Maven, Linux/Bash
Databases: PostgreSQL, MySQL, MongoDB, Redis,
Query Optimization, Indexing,Database Performance Optimization
Cloud & DevOps: AWS EC2, Docker, Jenkins,
CI/CD Pipelines,Kafka, Event-Driven Architecture,Docker, Kubernetes, Terraform
AI & Automation: Machine learning integration (Gemini 3, GPT-4o), AI Workflow Automation,GitHub Copilot Prompt Engineering
Testing & Quality: Automated E2E Testing, SonarQube, BrowserStack, Regression Testing
Others: Software architecture,Payload optimization,API Security, Performance Tuning,Agile/Scrum,System Design Concepts
Projects
Intelligent Operational Dashboard - Operix
Tech Stack - React.js, Spring Boot, LLM APIs, AWS EC2, PLSQL, Vercel, Ngrok
- Built an intelligent operational dashboard for ticket prioritization and workflow tracking using Multi LLMs API-based classification, reducing manual ticket triage effort by ~80% during testing workflows.
- Developed responsive frontend with React Context API,custom hooks and Axios for state management and API communication.
- Designed RESTful APIs for incident management,escalation tracking and real-time workload monitoring.
- Built Spring Boot APIs with DTO validation, centralized exception handling, layered service-repository structure and JWT-based request authorization and HttpOnly cookies for internal support workflows.
- Integrated PostgreSQL database with Spring Data JPA and Hibernate for efficient data persistence.
- Deployed backend on AWS EC2 and frontend on Vercel with HTTPS tunneling(Ngrok) and CORS handling.
Certification
- AWS Certified Solutions Architect - Associate, Amazon Web Services
- AWS Certified Developer - Associate, Amazon Web Services
Awards Recognition
- Special Initiative Award, Tata Consultancy Services
- Service & Commitment Award, Tata Consultancy Services
Timeline
Product Engineer (Full Stack Developer) - Tata Consultancy Services
02.2022 - 04.2026
Kanpur Institute of Technology (AKTU) - B.Tech, Mechanical Engineering