Mohan Kumar Rangasamy

Technology Specialist with nearly 13 years of experience in Full Stack Development, delivering innovative solutions across Telecom, Healthcare, Banking, FMCG, and Real Estate sectors. Expertise in both front-end and back-end technologies has resulted in significant enhancements to application performance and user experience. Proven track record of driving project success through effective collaboration and agile methodologies. Aiming to leverage extensive technical skills to contribute to dynamic digital transformation initiatives.

• 12 years of experience with a strong foundation in Java/J2EE-based application development, including over 8 years of hands-on development expertise. Proficient in Hibernate, Spring, Spring MVC, Spring Boot and REST API development.
• 6+ years of proven expertise in React and Vue.js, adept at building web-based UIs. Proficient in CSS, HTML, JavaScript, and frameworks such as jQuery, Next.js, Angular and React.
• Experienced in handling XML/XSD and JSON data presentation components, with significant exposure to microservices-based architecture and distributed systems. Skilled in developing and integrating REST APIs using the Spring Boot framework. Proficient in CI/CD tools, including Git, Bitbucket, Maven, Jenkins, and Jira.
• Adaptable to Agile development methodologies, with a proactive approach to problem-solving. A collaborative team player with attention to detail and a focus on delivering high-quality solutions.
• Strong technical expertise in Java, Spring Boot, Node.js, React.js, Vue.js, Angular, MySQL, PostgreSQL, and web technologies.
• A reliable team player with the ability to take the initiative to achieve company objectives.
• Demonstrates solid expertise in debugging, resolving application errors, and optimizing solutions.
• Highly driven to develop high-performing and resilient software, with a deep passion for and curiosity about front-end development technologies. Possesses strong problem-solving abilities and effective interpersonal skills, with a commitment to mastering emerging technologies and staying updated on advancements.

PRIMARY SKILLS

Java, J2EE, SpringBoot, Node JS, React JS, Angular, TypeScript, Vue JS, Next JS, AWS (EC2, ELB, RDS, Lambda, API Gateway, Route53 & S3), CloudFormation, Kafka, RabbitMQ, PHP, MVC & Design Patterns (Factory Pattern, Singleton Pattern, Dependency Injection).

DATABASE

MySQL, PostgreSQL, Oracle, PL/SQL,NoSQL, MongoDB, DynamoDB, RDS.

ADDITIONAL SKILLS

REST, SOAP, API, Microservices, Django, Python, HubSpot (CRM), Webservices - OAuth, JWT, XML-RPC, REST-JSON.

AUDIT

SEO SEMrush Site PWA

DESIGN & DEVELOPMENT TOOLS

Figma, Zeplin, Invision, Photoshop, WHX, AWS CLI, Docker, Artifactory,Splunk, ELK, Zookeeper, Visual Studio Code, IntelliJ Idea, DBeaver, pgAdmin, WinSCP, MySQL Workbench, Confluence, New Relic, Jenkins, Wireframe.

• AWS Solution Architect Professional Microsoft
• Azure Fundamentals (AZ-900)

Full-Stack Development: Expertly managed the end-to-end life cycle of software and application production, ensuring high-quality deliverables and seamless deployment.

System Analysis and Planning: Analyzed complex information to recommend and plan the installation of new systems or the modification of existing systems, optimizing performance and scalability.

Feasibility Studies: Conducted comprehensive feasibility studies for upgrading software systems to meet evolving business needs.

High-Quality Coding: Developed highly maintainable and robust code for software systems, forming the core framework and earning consistent recognition from subsequent developers for reliability and clarity.

Documentation: Documented user stories, technical specifications, and requirements to ensure alignment between stakeholders and development teams.

Task Management: Set and communicated work priorities, provided updates, and addressed emerging issues throughout the development process.

Code Review and Debugging: Performed thorough code reviews and resolved errors to enhance system performance and maintainability.

Product Development: Directed the design, prototyping, and testing phases of product development, ensuring adherence to technical and business objectives.

Product Design: Spearheaded the design and creation of innovative, user-centric products while maintaining a balance between functionality and performance.

Technical Leadership: Provided mentorship and technical leadership to team members, fostering skill development and collaboration across teams.

Client: Zurich.com, Switzerland, Singapore & Malaysia

Role: Senior Techinical Consultant

Domain: HealthCare (Insurance Claims & Reinsurance Analysis)

Technologies: Node JS,PostgreSQL, React JS, Azure Studio, Azure DevOps

Duration: 2024 to 2025

Description: At Zurich we will support you before, during and after a claim with an  approach that is fair, customer-centric, transparent and personal.

Responsibilities:

➢ Zurich Connector API Solution

➢ Zurich Risk Room

➢ Zurich Risk Advisor

Boats.net

Client: Boats, Albany, GA

Role: Technical Architect

Domain: Automobile (Ecommerce)

Technologies: Laravel API, Next Auth, Next JS,Tailwind CSS, React JS, Strapi (Node.js Headless CMS)

Duration: 2023 to 2024

Description: Modern Web Application with Secure Authentication and CMS Integration.

Responsibilities:

• This project is a full-stack web application that leverages modern technologies to provide a secure, scalable, and user-friendly platform. It integrates a Laravel API for backend operations, Next.js with React.js for a responsive frontend, NextAuth for authentication, Tailwind CSS for styling, and Strapi (Node.js Headless CMS) for content management

Tech Stack Used:

• Backend: Laravel API (RESTful API development)
• Frontend: Next.js + React.js (Server-side rendering & client-side UI)
• Authentication: NextAuth (Secure authentication)
• Styling: Tailwind CSS (Utility-first CSS framework)
• CMS: Strapi (Headless CMS for content management)
• Database: MySQL / PostgreSQL (Optional)
• Deployment: Vercel / AWS / DigitalOcean

Online Shop O2 Online

Client: O2 Online US

Role: Technology Specialist

Domain: Telecom

Technologies:

Backend: Java 11, Spring Boot

Messaging and Streaming: Kafka

Logging and Monitoring: ELK Stack (Elasticsearch, Logstash, Kibana), Grafana Dashboards

DevOps and CI/CD: Jenkins pipeline, Docker, VPINT SWARM

Authentication: Single Sign-On (SSO) with OAuth2

Source Control and Migration: Bitbucket to GitLab migration

Testing Frameworks: Mockito

Build and Dependency Management: Maven configurations

Code Security and Vulnerability Analysis: Kiuwan scans

Duration: 2022 to 2024

Description: Ultra-fast wireless home Internet with speeds up to 100 Mbps and unlimited full-speed HD video streaming to the canada region using its own geo satellite.

Responsibilities:

• Designed and implemented a microservices-based architecture using Spring Boot for scalability and modularity.
• Developed reliable event-driven workflows leveraging Kafka for asynchronous communication.
• Integrated ELK Stack for centralized logging and performance monitoring, complemented by Grafana Dashboards for real-time metrics visualization.
• Automated deployment pipelines using Jenkins with Docker containers and VPINT SWARM for orchestration.
• Ensured secure user authentication and authorization with SSO using OAuth2.
• Migrated version control repositories from Bitbucket to GitLab, ensuring smooth transition and minimal downtime.
• Conducted comprehensive code security and vulnerability scans using Kiuwan, proactively addressing risks.
• Developed and maintained unit and integration tests with Mockito, achieving high code quality and reliability.

Impact: The project streamlined the shopping experience for users while providing the organization with robust performance insights, enhanced security, and scalable deployment capabilities. It demonstrated a strong focus on automation, security, and maintainability.

Procure-to-Pay Financial Automation System (Iteration Matrix)

Client: JP Morgan, US Bank

Role: Senior Software Engineer

Domain: Fintech Banking

Technologies:

• Backend: Java 11, Spring Boot (Microservices Architecture)
• Frontend: React.js
• Database: PostgreSQL
• Cloud & DevOps: AWS / Kubernetes (if applicable)
• Security: OAuth2 / JWT

Duration: 2022 to 2023

Description: The Procure-to-Pay (P2P) Automation System is designed to streamline financial operations for large financial institutions like JP Morgan & US Bank. This system helps finance and accounts payable departments by optimizing their ePayables, supplier invoice tracking, duplicate payment prevention, and credit recovery processes.

Responsibilities:

1. ePayables Solutions & Invoice Tracking Portal

✔ Developed an electronic payments (ePayables) solution to automate vendor and supplier payments. ✔ Created a Supplier Invoice Tracking Portal using React.js for real-time invoice visibility. ✔ Integrated Spring Boot microservices to process invoices securely. ✔ Implemented PostgreSQL to efficiently store invoice data and transaction history.

2. Duplicate Payment Prevention & Recovery

✔ Built a duplicate payment detection system using AI-driven pattern matching. ✔ Designed an alert mechanism to flag duplicate transactions before processing. ✔ Developed missed credit recovery services to identify and reclaim lost revenue.

3. Statement Reconciliation & Audit Compliance

✔ Created automated reconciliation tools to verify transactions against bank statements. ✔ Ensured compliance with financial regulations through audit logs & reports. ✔ Optimized data integrity & consistency using PostgreSQL ACID transactions.

4. Electronic Invoicing & Vendor Integration

✔ Implemented secure API-based electronic invoicing (e-invoicing) system. ✔ Integrated with third-party financial platforms for vendor payment processing. ✔ Developed a React.js UI for vendors to upload and track invoices in real-time.

Health Insurance Management System

Client: Vasquez Healthcare -US Bank Insurance Application

Role: Senior Software Engineer

Domain: Health Care (Insurance)

Technologies:

• Frontend: Angular 12
• Backend: Node.js, Laravel
• Database: PostgreSQL
• Design Tools: Figma
• Testing Tools: Postman, Burp Suite (API Security & Testing)
• Development Tools: Visual Studio Code, MySQL Workbench

Duration: 2021 to 2022

Description: This project is a healthcare insurance application designed for client-side use in the insurance sector. The platform enables agents, agencies, and companies to collect customer details through different channels such as:    D2C (Direct to Consumer)    A2C (Agent to Consumer)    ACC (Agency to Company to Consumer) It simplifies applicant registration, policy agreements, and transaction processing while ensuring security and compliance. The platform serves clients in the United States, Holland & Kight, Selfgood, AllState, and Ark Group.

Responsibilities:

Node.js API Development & Authentication

✔ Developed RESTful APIs using Node.js & Laravel for seamless data processing. ✔ Implemented applicant registration, card details collection, and payment processing. ✔ Integrated JWT authentication for secure user access and transaction processing.

2. Healthcare Insurance Policy Agreement Process

✔ Built a 10-step guided process for users to complete policy agreements & transactions. ✔ Integrated digital signatures and approval workflows for healthcare insurance policies. ✔ Ensured compliance with HIPAA and insurance regulations.

3. Payment Processing with Vazpay

✔ Integrated Vazpay Internal Server for processing payments. ✔ Enabled secure transaction management with encrypted card details. ✔ Designed real-time transaction tracking and status updates.

4. Frontend Development with Angular 12

✔ Created responsive and interactive UI using Angular 12. ✔ Integrated Figma-based UI/UX designs to enhance user experience. ✔ Implemented role-based dashboards for agents, agencies, and companies.

5. API Testing & Security Compliance

✔ Conducted API testing using Postman to ensure performance & reliability. ✔ Performed security penetration testing with Burp Suite to detect vulnerabilities. ✔ Ensured data encryption and secure API communication to protect user data.

System Architecture:

• Microservices-Based Backend: Node.js & Laravel APIs communicate independently.
• Frontend-Backend Communication: Angular frontend interacts with Node.js API securely.
• Database Optimization: PostgreSQL ensures reliable data storage and fast transactions.
• Security & Compliance: JWT authentication, encryption, and security testing ensure compliance with industry standards.

Xplore.ca

Client: Xplore, Canada & US

Role: Studio Manager

Domain: Telecom (Competitor of Startlink Tesla)

Technologies: Craft CMS,PostgreSQL, React JS

Duration: 2023 to 2024

Description: Ultra-fast wireless home Internet with speeds up to 100 Mbps and unlimited full-speed HD video streaming to the canada region using its own geo satellite.

Responsibilities:

➢ Xplore fiber, Cottage Internet, Next-Gen Satellite ➢ Geo specific availability check with ecommerce solution along with store integration

➢ Internet Packages

EDVOY.COM

Client: Edvoy CRM & Student Application Management Platform

Role: Manager

Domain: EduTech

Technologies:

Frontend: Nuxt.js, Vue.js, Vuex, Next.js, React.js, Redux Backend: NestJS, Node.js, GraphQL, Microservices Database: MongoDB, PostgreSQL Authentication & Security: Casbin, Zanzibar Caching & Messaging: Redis, RabbitMQ DevOps & Deployment: Docker Analytics & Tracking: Google Tag Manager (GTM), Google Analytics (GA) Storage & Hosting: Firebase, Strapi

Duration: 2019 to 2021

Description: Edvoy is a comprehensive CRM and student application management platform designed to streamline the student recruitment and application process. It enables students to find the best universities based on their academic qualifications, track their applications, and manage document submissions seamlessly.

The project consists of three major components:    Edvoy CRM – Role-based lead management and application tracking.    Edvoy API – Intelligent course recommendation engine with a microservices architecture.    Edvoy Web – User-friendly web platform for students to track applications and interact with universities.

Responsibilities:

✔ Edvoy Genie – A rule-based system that recommends courses based on student qualifications. ✔ Categorization Engine – Classifies students into High, Medium, and Low chances of admission. ✔ Semantic Search Integration – Enhances course search using intent-based queries. ✔ Microservices-Based Application Management – Scalable system for tracking student applications. ✔ Event Sourcing for Application Lifecycle – Tracks processing times and optimizes student journey.

Impact:✔ Higher user engagement & retention with an intuitive onboarding flow. ✔ Seamless document management reducing administrative overhead. ✔ Faster website performance, improving student experience and accessibility.

• Securing First Rank in my Department consecutively 3 semesters.
• Sahaj Marg Research & Training Institute Chennai conducting All India Essay Writing Topic1: Love & Discipline is two sides of the same coin.
• Participated in the National Level Technical Symposium at SSN College of Technology Chennai. Paper Title: Virtual Reality.
• Implant Training at NDOT solutions Coimbatore. Web Applications developed in php during two weeks of my 4th semester.
• Best outstanding student award of Master of Computer Application on my batch.

• I hereby declare that the above stated information is true to the best of my knowledge and belief.

Date : 18/02/2025

Place : Chennai, TamilNadu.

(Mohan Kumar. R)