Sudhakar Raju
Verified Expert in Engineering
Full-stack Developer
Sudhakar is a seasoned engineer with over two decades of experience in software development, APIs, and web portals and expertise with Node.js, .NET, React, and Spring/Java technologies and frameworks. Besides his wealth of expertise and experience, Sudhakar brings a bright mind that excels at problem-solving and learning new technologies. Sudhakar is also a strong advocate of DevOps and automation.
Portfolio
Experience
Availability
Preferred Environment
MacOS, Windows, GitHub, Slack, Skype, Microsoft Teams, Visual Studio, Linux, Visual Studio Code (VS Code), GraphQL
The most amazing...
...experience has been building an IoT-based asset tracking solution from scratch, including an IoT hub, REST API, and React front end for desktop/mobile channels.
Work Experience
Tech Lead and Full-stack Engineer via Toptal
Ldun FinTech
- Developed a multilingual React responsive web app with a .NET Core REST API back end for LDUN (a buy now, pay later service) catering to merchants, suppliers, and LDUN operations.
- Integrated services with Wathq (Government Commercial Registration Services), ANB Bank payment API, email, and SMS external services.
- Developed Notification Engine using Node.js and NestJS frameworks and message queues to cater to diverse notification requirements—SMS, email, and WhatsApp based on complex business rules.
- Built a DevOps pipeline in GitHub Actions for deployment to Oracle Cloud through a bastion.
Full-stack Lead Engineer via Toptal
Onfo
- Rolled out Stellar blockchain (v18) for cryptocurrency rollout, with geo-distributed nodes in Asia, Europe, South America, the US, and Australia.
- Built a front end (.NET and React) and a REST API on Lambda (Node.js and the Serverless Framework).
- Integrated a Stripe API platform for payments during the registration process. Built necessary tracking controls with the ability to reprocess and cancel payments.
- Built .NET Identity Portal to validate ID documents (passports, driving licenses, etc.) and face image capture.
- Developed a CI/CD pipeline for serverless scripts. The ability to go live on-demand helped bring more agility to production rollouts.
Front-end React Developer via Toptal
Make Better Consulting
- Developed a responsive web UI using React and Next.js for a blockchain exchange platform with screens for swap, explorer, tokens, and stats.
- Contributed to multi-wallet integration and authentication through the portal.
- Used Storybook to demonstrate UI components and localized visual UI testing of components.
- Achieved 95% test coverage on React components. Test scripts were built using Jest, Enzyme, and the React Testing Library.
Digital Technology Architect
Cognizant
- Developed, from end to end, an IoT asset-tracking solution for a telco customer. It required building IoT hub processors, REST API (.NET), a React front end with high test automation (over 90% coverage), CI/CD, and frequent product releases.
- Built digital sales and collection apps that reduced loan processing from 24 hours to seven minutes; it used a MEAN stack, Android, REST microservices architecture, and was scaled to handle over 100,000 APIs/day with sub-second performance.
- Handled a cloud migration of wealth management portfolio applications for a Swiss bank. The strategy involved a change from a lift-and-shift to refactoring to a cloud-native state and deployment.
Mobility Architect
Cognizant
- Responsible for the development of mobile apps for various healthcare customers in the US, including a member app, wellness app, provider apps. The technologies included hybrid apps (PhoneGap, HTML5, JavaScript), native Android, and iOS.
- Developed a retail banking app for a Saudi American bank using the Kony platform. The app was launched on the iOS, Android, Windows, and BB platforms.
- Built a sales-and-collections Android app used by field agents to sell automobile loans and collect dues.
Technology Architect
Cognizant
- Led a team in the development and enhancement of sales-rating-quoting (SRQ) web services for a leading healthcare payer using .NET Web APIs.
- Developed ASP.NET Forms for a quick quote work flow.
- Implemented exception handling, logging, and site usage analytics for the project.
Technology Architect
Infosys
- Created a POS air ticket booking application for travel agents in Dubai. It was built using .NET Services, WCF, Windows Forms, and Microsoft SQL Server.
- Developed and rolled out multi-regional HR sites (over 50) for Microsoft using SharePoint.
- Troubleshot trading flow issues and provided fixes for a large Wall Street trading firm.
Experience
FinTech | Buy Now, Pay Later Product Development and Rollout
https://ldun.com.saThe features of the product were the following: Merchant, Seller registration, Digital wallet, Automated payment synchronization with ANB Bank, Automated monthly wallet deductions, Email/SMS reminders, Rule-driven supplier, Merchant risk evaluation and limits deduction, Merchant/Seller validation with Wathq (Saudi Arabia Government Commercial Registration Office).
The product was enhanced to have marketplace integration, using either APIs (the headless mode) or JavaScript for UI-based integration.
The project was executed using a 3-week Sprint model, with project use case grooming, estimation, and sprint allocation-tracking, culminating with production rollout.
IoT-based Asset-tracking Solution for Telstra, Australia
https://www.telstra.com.au/small-business/internet-of-things/track-and-monitorWe executed the project using Agile Scrum methodologies—CI/CD with frequent releases to prod (a 4-to-6-week cycle) and high test automation (over 90% unit test coverage, 65% journey test coverage using Selenium)—and maintained zero days of tech debt.
Cryptocurrency (Platform and UI) 2.0 Development with the Stellar Blockchain Platform
https://onfo.orgThe platform also included integration with Vouched.ID for ID recognition and Stripe payment platforms.
React and Next.js DeFi Exchange Site
Project details:
• Jest scripts for unit testing with over 90% coverage
• Storybook for visual component testing
• CI/CD and deployment to a GCP environment
MEAN Stack – REST Microservices and Responsive Web Apps for Sales and Collection Field Agents
Air Ticket Sale App for Travel Agents
Mobile App for a Leading Bank in the Middle East
Performance Tuning of Etihad Airways' Guest Portal
I worked with the development team to identify improvement areas and the root cause of leakage and then rolled out fixes. The fixes greatly helped the response time and resulted in a better user experience.
Microsoft - HR Portal - Global Rollout
The solution required the development of a Sharepoint portal, with 25+ collections created for each region. The portal included multiple layout pages, lists ( Events, Notices, People, etc.), web parts, and a search feature.
Education
Bachelor's Degree in Computer Science and Engineering
Coimbatore Institute of Technology - Coimbatore, India
Certifications
AWS Solutions Architect Associate
Amazon Web Services
Skills
Languages
HTML5, JavaScript, HTML, C#, TypeScript, CSS, SQL, C#.NET, Java, Sass, GraphQL
Frameworks
.NET, Redux, Next.js, Material UI, Express.js, ASP.NET, .NET Core, Entity Framework Core, Spring, ASP.NET MVC, ASP.NET Core MVC, Serverless Framework, ASP.NET Core, NestJS, Tailwind CSS, Bootstrap, AngularJS, PhoneGap, NUnit, Jest, React Native
Libraries/APIs
React, Node.js, Redux-Saga, REST APIs, React Redux, Entity Framework, Stripe, Stripe API, jQuery, Apigee, Google Maps SDK
Tools
Redux Thunk, GitHub, SonarQube, Azure IoT Hub, NGINX, Stellar SDK, Redux Toolkit, Figma, RabbitMQ, Slack, Skype, Microsoft Teams, Visual Studio, Jenkins, Webpack
Paradigms
REST, Web Architecture, API Architecture, Responsive Web Design (RWD), Microservices Architecture, Microservices, Serverless Architecture, Automated Testing, DevOps
Platforms
Amazon Web Services (AWS), Blockchain, AWS Lambda, Blockchain Platforms, Docker, Azure, Algolia, SharePoint, MacOS, Windows, Linux, Visual Studio Code (VS Code), Android, iOS, Google Cloud Platform (GCP), Vercel
Storage
Amazon S3 (AWS S3), Databases, MongoDB, MySQL, Azure Cloud Services, Microsoft SQL Server, NoSQL, Amazon DynamoDB, Redis, PostgreSQL, SQLite, Sybase, MySQLdb, Oracle Cloud
Other
Software Architecture, Architecture, Responsive Web Apps, Full-stack, APIs, Front-end Development, Front-end, Full-stack Development, Technical Leadership, Back-end, Back-end Development, Software Design, MERN Stack, Web Development, Estimations, Axios, Front-end Architecture, Minimum Viable Product (MVP), User Interface (UI), Team Leadership, Technical Architecture, Web App Development, Containers, Web Services, Decentralized Finance (DeFi), Storybook, Stellar, Serverless, CI/CD Pipelines, Amazon RDS, API Gateways, API Integration, OAuth, Accessibility, Cryptocurrency, Blockchain & Cryptocurrency, Front-end Design, Data Visualization, WCF Web Services, Windows Communication Foundation (WCF), Amazon API Gateway, Computer Science, Cloud, Sagas, Responsive UI, Internet of Things (IoT), Payment Gateways, SharePoint UI
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