•Design and develop the core modules of a betting engine such as bet placement, price pool calculation,and more in a pari-mutuel betting server; achieved 8k concurrent users.•Performed development using a Substrate-based blockchain node; set up continuous integration using GitLab and Rust caching.•Spearheaded the development of 2 Single Page Applications and 3 Decentralized Apps using React andRESTful APIs with Node.js; decreased server response time by 35%.•Helped implement algebraic decentralized finance Liquidity Pool math using approximation methods within the protocol contracts.•Wrote unit tests for functionalities of services and integration tests to test the functionality of integrating part between services and databases and so increased the stability and accuracy of current services to 95%.

•Resolved dependency problems in customizing the governance module of Cosmos SDK into the vote escrowed governance.•Used TDD and BDD improving software quality by 30% and involved in Agile Development andmaintained effective communication in the team going through all phases of SDLC.•Handled the heavy development of 30 embedded JavaScript widgets on third-party publisher sites.•Deployed the infrastructure on well-defined and sophisticated systems using various CI/CD and IaCtools like GitHub Actions and Terraform, resulting in successful deployment of projects with zerodowntime and a cost savings 20%.•Migrated an application toward the cloud, reducing hosting costs for the client by 50%.•Implemented a new version of checkout supporting recurring subscriptions using micro-services builtin Node.js and TypeScript.•Took part in the development of microservices which serves medical data stored in AWS S3 buckets andhandled data management in Go using some packages like s3 package for AWS S3 bucket, mongo-driver for MongoDB and pq, sql or GORM package for SQL Databases.•Improved the functionality and scalability of existing services by updating those based on HTTP1 toHTTP2, using gRPC, RPC and by adding load-balancing functionalities and solving high-traffic issues.

•Managed the AWS DevOps infrastructure for the eCommerce sites improving reliability by 50% and helped design the back end and networking architecture for several AWS-hosted eCommerce and donor-matching web apps.•Led the development of fully automated deployment pipelines for all products, thus speeding up thecurrent deployment and product releases by 2x; directly worked with product and QA to ensuresuccessful product releases.•Revamped the architecture for the web application, including the database schema, authentication andauthorization, front-end framework, and styling library, as well as supporting external APIs and tools.•Integrated REST APIs for feature improvements leading to a 20% increase in daily user engagement.•Created over 24 programs leveraging proficiency with HTML5, CSS3 and JavaScript.•Wrote a framework to generate new custom websites with a custom database back-end for rollout andprototyping.•Collaborated with UI/UX designers to design and subsequently develop responsive, holistic front ends.•Composed and executed more than 200 unit tests to guarantee 100% quality assurance throughoutSDLC.•Overhauled the UI for an internal tool to refund customers which helped the customer experience teamof 10 improve refund speed by 10%.

•Took part in Designing 3+ rich user interface applications using JavaScript, jQuery, CSS, HTML and AJAX.•Created and maintained the 2+ services for central management of the application using React forfrontend and PHP for backend.•Separated the database into 50+ tables and generated optimized SQL queries to fetch necessary data forthe medical business.