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Hi, I'm Mandip Singh Rai, a Senior Software Engineer with over 10 years of experience building scalable and secure applications across healthcare, financial services, and e-commerce sectors. I specialize in Python and Node.js backend development along with Angular and React for frontend solutions. I enjoy crafting APIs, implementing microservices, and leveraging cloud platforms to deliver seamless user experiences. I take pride in mentoring junior engineers and leading modern development practices such as CI/CD automation and performance optimization. When I'm not coding, I love collaborating with teams to create impactful software that aligns perfectly with business goals.…Hi, I'm Mandip Singh Rai, a Senior Software Engineer with over 10 years of experience building scalable and secure applications across healthcare, financial services, and e-commerce sectors. I specialize in Python and Node.js backend development along with Angular and React for frontend solutions. I enjoy crafting APIs, implementing microservices, and leveraging cloud platforms to deliver seamless user experiences. I take pride in mentoring junior engineers and leading modern development practices such as CI/CD automation and performance optimization. When I'm not coding, I love collaborating with teams to create impactful software that aligns perfectly with business goals.

Mandip Singh Rai

Full Stack Developer, Developer, Cloud Developer, +3

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Hi, I'm Mandip Singh Rai, a Senior Software Engineer with over 10 years of experience building scalable and secure applications across healthcare, financial services, and e-commerce sectors. I specialize in Python and Node.js backend development along with Angular and React for frontend solutions. I enjoy crafting APIs, implementing microservices, and leveraging cloud platforms to deliver seamless user experiences. I take pride in mentoring junior engineers and leading modern development practices such as CI/CD automation and performance optimization. When I'm not coding, I love collaborating with teams to create impactful software that aligns perfectly with business goals.…Hi, I'm Mandip Singh Rai, a Senior Software Engineer with over 10 years of experience building scalable and secure applications across healthcare, financial services, and e-commerce sectors. I specialize in Python and Node.js backend development along with Angular and React for frontend solutions. I enjoy crafting APIs, implementing microservices, and leveraging cloud platforms to deliver seamless user experiences. I take pride in mentoring junior engineers and leading modern development practices such as CI/CD automation and performance optimization. When I'm not coding, I love collaborating with teams to create impactful software that aligns perfectly with business goals.

Available to hire

Hi, I’m Mandip Singh Rai, a Senior Software Engineer with over 10 years of experience building scalable and secure applications across healthcare, financial services, and e-commerce sectors. I specialize in Python and Node.js backend development along with Angular and React for frontend solutions. I enjoy crafting APIs, implementing microservices, and leveraging cloud platforms to deliver seamless user experiences.

I take pride in mentoring junior engineers and leading modern development practices such as CI/CD automation and performance optimization. When I’m not coding, I love collaborating with teams to create impactful software that aligns perfectly with business goals.

Skills

Experience Level

Expert

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Intermediate

Intermediate

Work Experience

Senior Software Engineer at OooWee

March 1, 2019 - Present

Led development of a HIPAA-compliant healthcare engagement platform using FastAPI and Angular 17, enabling real-time patient-provider interactions with WebSocket and RabbitMQ. Implemented OAuth 2.1 and JWT for secure authentication, reducing unauthorized access by 90%. Scaled backend to support over 1 million records and 10,000+ concurrent users with 99.9% uptime on Azure Kubernetes Service. Integrated Prometheus and Grafana for monitoring, reducing incident response time by 40%. Developed a financial loan processing microservices platform with Node.js and React, incorporating Python ML models for fraud detection that cut fraud by 30%. Migrated legacy .NET systems to Azure cloud, lowering infrastructure costs by 50%. Enhanced transaction throughput by 45% through performance tuning and batch reconciliation automation. Mentored junior engineers and built CI/CD pipelines with GitHub Actions and Azure DevOps to reduce release times from two weeks to two days.

Senior Full Stack Engineer at Digital Insightz

February 28, 2019 - July 10, 2025

Re-architected high-transaction e-commerce platform backend using Node.js and Angular 10, boosting transaction reliability by 20%. Developed reusable React and Angular component libraries reducing UI defects by 40%. Migrated payment processes to Stripe and PayPal, decreasing failed transactions by 18%. Designed serverless architecture using AWS Lambda and Fargate for asynchronous transaction validation, cutting operational overhead by 50%. Built Python ML fraud detection models improving platform trust and adoption by 35%. Delivered AI-powered NLP chatbots handling 5,000+ daily queries. Conducted load testing and centralized logging using Locust, JMeter, and ELK Stack, ensuring 95% SLA compliance.

Full Stack Developer at Digital Insightz

February 28, 2016 - July 10, 2025

Modernized legacy ERP features by rebuilding backends in Flask and Node.js, reducing technical debt by 60%. Implemented RESTful APIs and React dashboards for real-time performance tracking and dynamic reporting. Automated payroll workflows with Python, cutting processing time by 30% and eliminating errors. Migrated AngularJS frontend to React for improved user experience. Optimized SQL Server queries reducing latency by 20%. Deployed AWS solutions for backups and background jobs. Conducted manual and automated testing with Selenium and Pytest, delivering stable releases and facilitating user onboarding.

Senior Software Engineer at OooWee

March 1, 2019 - Present

Developed a HIPAA-compliant, cloud-native healthcare engagement platform using FastAPI and Angular 17, enabling real-time patient-provider interactions with WebSocket and RabbitMQ. Scaled backend services to support over one million records and 10,000+ concurrent users with 99.9% uptime via Azure Kubernetes Service. Implemented robust authentication with OAuth 2.1 and JWT, reducing unauthorized access by 90%. Led integration of monitoring tools Prometheus and Grafana to improve incident response by 40%. Designed microservices, APIs, and migrated legacy financial platforms to Azure, cutting infrastructure costs by 50%. Improved system performance and cutting reconciliation time drastically with Python batch jobs. Mentored junior engineers, implemented CI/CD pipelines with GitHub Actions and Azure DevOps, and built real-time messaging systems with Kafka and AWS SQS.

Senior Full Stack Engineer at Digital Insightz

February 28, 2019 - July 10, 2025

Re-architected a high-transaction e-commerce platform with Node.js and Angular, increasing transaction reliability by 20%. Created reusable UI components in React and Angular, reducing UI defects by 40%. Migrated payment processing to Stripe and PayPal, cutting failed transactions by 18%. Developed serverless payment validation architectures using AWS Lambda and Fargate, halving operational overhead. Implemented ML fraud detection improving trust scores by 35%. Built frontend components with NgRx and Redux, deployed Node.js microservices with Docker and Kubernetes, and utilized ELK Stack for centralized logging. Led load testing efforts with Locust and JMeter to ensure 95% SLA compliance.

Full Stack Developer at Digital Insightz

February 28, 2016 - July 10, 2025

Modernized legacy ERP systems in Python and Node.js, reducing technical debt by 60%. Developed RESTful APIs and React dashboards for real-time employee performance tracking. Automated payroll workflows in Python, cutting processing time by 30%. Refactored frontend from AngularJS to React improving maintainability. Optimized SQL Server queries for latency reduction. Managed AWS S3 and Lambda deployments for backups and background jobs and utilized Selenium and Pytest for testing. Delivered user training and onboarding for ERP adoption.

Senior Software Engineer at OooWee

March 1, 2019 - Present

Developed a HIPAA-compliant healthcare engagement platform using FastAPI and Angular 17, enabling real-time communications with WebSocket and RabbitMQ. Implemented OAuth 2.1 and JWT for secure authentication, reducing unauthorized access by 90%. Scaled backend to support over 1 million records and 10,000+ concurrent users with 99.9% uptime on Azure Kubernetes Service. Integrated Prometheus and Grafana to monitor system health, improving incident response. Designed a microservices-based financial loan platform with Node.js and React, incorporating Python machine learning models to reduce fraud by 30%. Migrated legacy systems to Azure cloud, cutting infrastructure costs by 50%, and improved transaction throughput by 45%. Led CI/CD automation with GitHub Actions and Azure DevOps, reducing release time significantly. Mentored junior engineers and built comprehensive test suites achieving over 90% code coverage.

Senior Full Stack Engineer at Digital Insightz

February 28, 2019 - July 10, 2025

Re-architected high-transaction e-commerce transactional engine using Node.js and Angular 10, improving transaction reliability by 20%. Developed reusable React and Angular component libraries reducing UI defects by 40%. Migrated payment processing to Stripe and PayPal, reducing failed transactions by 18%. Designed serverless payments infrastructure with AWS Lambda and Fargate, reducing operational overhead by 50%. Built Python-based ML models for fraud detection, increasing platform trust scores by 35%. Created AI-powered NLP chatbots with Twilio handling 5,000+ daily queries. Performed load testing and utilized ELK Stack for centralized logging to maintain 95% SLA compliance.

Full Stack Developer at Digital Insightz

February 28, 2016 - July 10, 2025

Modernized legacy ERP system backend using Python (Flask) and Node.js, reducing technical debt by 60%. Developed RESTful APIs and dynamic React dashboards for real-time employee performance tracking. Automated payroll processing with Python, reducing processing time by 30%. Progressive frontend migration from AngularJS to React for better maintainability. Optimized SQL Server queries to reduce latency by 20%. Managed AWS S3 and Lambda deployments for backup and background task automation. Ensured quality through Selenium and Pytest automated testing. Delivered onboarding documentation and user training for ERP adoption across departments.

Senior Software Engineer at OooWee

March 1, 2019 - Present

Led development of a HIPAA-compliant healthcare engagement platform using FastAPI and Angular 17, supporting real-time patient-provider interactions with WebSocket and RabbitMQ integration. Scaled backend for over 1 million records and 10,000+ concurrent users with 99.9% uptime using Azure Kubernetes Service. Built secure authentication workflows using OAuth 2.1 and JWT, reducing unauthorized access by 90%. Integrated Prometheus and Grafana for monitoring, cutting incident response time by 40%. Developed a microservices-based financial loan platform with Node.js and React, integrating Python-based machine learning models to reduce fraud by 30%. Orchestrated migration of legacy .NET systems to Azure cloud services, halving infrastructure costs. Improved transaction throughput by 45% through performance tuning and database indexing. Automated reconciliation jobs with Python and Celery, shrinking reconciliation cycles from 48 to 6 hours. Mentored junior engineers, implemented CI/CD with G

Senior Full Stack Engineer at Digital Insightz

February 28, 2019 - July 10, 2025

Re-architected high-transaction e-commerce platform using Node.js and Angular 10, increasing transaction reliability by 20%. Developed reusable component libraries in React and Angular, reducing UI defects by 40%. Integrated payment processing with Stripe and PayPal, reducing failed transactions by 18%. Designed serverless payments architecture with AWS Lambda and Fargate, reducing overhead by 50% and improving peak throughput. Built machine learning fraud detection models increasing trust score and adoption by 35%. Managed Node.js microservices deployed with Docker and Kubernetes. Developed frontend state management with NgRx and Redux Toolkit. Delivered AI-powered NLP chatbots handling 5,000+ queries daily, and performed load testing with Locust and JMeter to maintain SLA compliance. Used ELK stack for centralized logging and issue detection.

Full Stack Developer at Digital Insightz

February 28, 2016 - July 10, 2025

Modernized legacy ERP backend using Python Flask and Node.js, reducing technical debt by 60%. Created RESTful APIs for real-time employee performance tracking with React dashboards. Automated payroll workflows with Python, reducing processing time by 30%. Refactored AngularJS frontend and migrated features to React for improved usability. Optimized SQL Server queries, reducing latency by 20%. Deployed AWS S3 and Lambda solutions for backups and background jobs. Conducted automated and manual testing with Selenium and Pytest for stable deployments. Delivered user training and documentation for ERP adoption across multiple departments.