Achal S

Developed real-time market data applications to process and analyze large volumes of financial data, delivering insights to traders, portfolio managers, and analysts. Built scalable applications using Spring Framework, Java, and RESTful Web Services for backend development. Created dynamic, responsive user interfaces for real-time data visualization and interactive dashboards using JavaScript and React. Developed and maintained RESTful APIs with Java and Spring Boot, ensuring seamless integration. Designed and deployed high-performance solutions using Cassandra and MongoDB, following NoSQL best practices for data modeling and replication. Enhanced SDLC processes by implementing Test Driven Development (TDD), code reviews, and CI pipelines. Delivered microservices using Java, improving modularity and scalability of applications. Integrated AWS Redis Cache for distributed caching, optimizing application performance. Managed AWS cloud-based production systems via Amazon EKS, implementing CI with Jenkins for runtime operations. Monitored application performance and set up production alerts using CloudWatch and Datadog. Provided production support, collaborating with business stakeholders to resolve issues and ensure system stability. Led comprehensive testing, including user acceptance testing, and created detailed documentation for multiple applications.

Contributed to both frontend and backend development, using React, JavaScript, and Node.js for inventory management and scheduling automation. Developed APIs for inventory management, device reservation, script scheduling, validation, and speed testing of cable modems. Built and maintained backend infrastructure using Python3 (3.6, 3.8, 3.11) and Django for performance optimization and compatibility. Created GUIs with Python3 and Django to display dynamic block documentation. Automated resource creation in OpenStack using Python and Terraform modules. Developed RESTful web features with React JS, Golang, and Python, ensuring a responsive UI. Integrated Jira into the CI/CD pipeline for automated testing and deployment. Configured MySQL databases and created advanced Python3 scripts for data migration from a proprietary database. Managed CI systems with Git, Jenkins, and custom Python/Bash tools, monitoring Kafka and utilizing NPM scripts for automation. Implemented Swagger for API documentation and Postman for API testing. Utilized Docker for containerized deployment and consistent environments across development, testing, and production. Worked with AWS services like Lambda, S3, EC2, EB, CloudFront, SNS, and DynamoDB for scalable deployment solutions.

Involved in SDLC stages: requirement gathering, design, and prototyping. Integrated OAuth0 for secure SSO and JWT with Spring for global CORS. Developed scalable apps using JavaScript (React.js, Node.js) and Spring Boot. Deployed AWS RDS for OracleDB and AWS S3 with microservices on EC2. Built Kafka Streams apps and created environments using Docker, Bash, Terraform on AWS EC2. Integrated third-party services, APIs, and Hibernate into Spring Boot. Used RESTful APIs, GraphQL, React Hooks, Context API, and Redux in React apps. Managed OracleDB with Oracle SQL Developer, Dockerized apps, and used Kubernetes for scaling. Led code reviews and CI/CD setup with Jenkins, GitLab, and Jira. Automated testing with JUnit and Selenium in CI/CD pipelines.