Sourabh Mandal

Sourabh Mandal

Senior Full-Stack Engineer | React | Node.js | TypeScript | AWS | Microservices

Bengaluru, India

#OpenToWork

About

Full-Stack Engineer with 4.2+ years of experience building scalable, high-availability web applications in healthcare, insurance and enterprise environments. Expertise in Node.js, Python, TypeScript, JavaScript, React.js, MongoDB, and AWS, with a track record of reducing system complexity, improving reliability, and shipping patient-facing features used by tens of thousands of users.

What I'm looking for

I'm looking for fully remote Senior Full-Stack Engineer, Backend Engineer, or Frontend Engineer opportunities where I can work on scalable SaaS products, cloud-native applications, distributed systems, AI-powered products, and modern web platforms. I'm especially interested in companies that value engineering excellence, ownership, clean architecture, and continuous learning.

Experience

Senior Software Engineer

ACL Digital (Client: Eli Lilly)

Jul 2025 – Present

• Designed and launched a Savings Card Service enabling patients to claim prescription discounts, improving customer retention and enhancing the pharmacy partner experience. • Implemented Auth0 for authentication of users, ensuring secure access management and improved application security. • Centralized 3 fragmented card workflows into a unified REST API platform, simplifying integrations across multiple third-party vendors and reducing operational complexity. • Developed a backup card database and wallet provisioning system, enabling high reliability, continuity during vendor outages, and reusable wallet flows for long-term scalability. • Built scalable backend services following microservices architecture and collaborated with cross-functional teams to deliver production-ready healthcare solutions. • Skills Utilized: React.js, Node.js, TypeScript, Microservices, PostgreSQL, Docker, Express.js, REST Api’s, AWS

React.jsNode.jsTypeScript

Software Engineer

Cognizant Technology Solutions

May 2022 – Jun 2025

• Built custom monitoring scripts to track key API performances metrics such as response time, error rates, and request throughput, enabling active detection of service anomalies. • Engineered modular React components from monolithic UI elements, boosting code reusability by 20% across the platform and slashing front-end development time by 10% for new feature implementations. • Designed and implemented an asynchronous email notification service using Nodemailer with retry mechanisms and failure handling to improve delivery reliability by 15%. • Performed production support, incident analysis, and RCA, implementing permanent fixes to improve application stability and reliability. • Integrated AWS DynamoDB-based data pipelines to support scalable, high-throughput applications and real-time reporting. • Skills Utilized: React.js, Python, TypeScript, JavaScript(ES6+), HTML/CSS, Node.js, MongoDB, Express.js, AWS(DynamoDb)

Node.jsReact.jsJavaScirptGraphQLMongoDB

Education

Haldia institute of technology

Haldia institute of technology

Bachelor of Technology · Civil Engineering

2017 – 2021

Certifications

Skills

MongoDBGraphQLAgile methodologyGit/GithubSystem DesignMicroservicesRedux ToolkitGRAPHQLRest API'sAWS DynamoDBAWS SQSAWS LambdaAWS LexDockerMongoDBPostgreSQLJavaScriptTypeScriptNode.jsReact.js

Languages

English (Full professional proficiency)