About

About Me

Hey there! I'm a Software Developer with 4.5 years of experience in Fullstack development. I specialize in building robust backend systems with Java, Spring Boot, and Hibernate, and I also work with server-side JavaScript frameworks like Node.js (shoutout to Express.js and Hapi.js). On the frontend,I love crafting seamless user experiences with React.js, Vue.js, and Nuxt.js. For data persistence, I'm well-versed in MySQL, Sequelize, and Hibernate. I am also great working with NoSQL databases like MongoDB, Azure Cosmos DB and caching tools like Redis, and familiar using Azure Service Bus and IBM MQ as message queues. I'm passionate about writing clean, maintainable code and building applications that make a real impact.

I'm super passionate about learning new things and keeping up with what's happening in the tech world. I'm always looking to grow my skills and explore fresh ways to build awesome solutions. Feel free to reach out!

Name: Rounak Simlai
Date of birth: July 21, 1999
Address: Kolkata, West Bengal, India
Email: rounak.simlai@gmail.com / simlairounak@gmail.com
Phone: +91 70440-70705 (Click here to chat in WhatsApp)
Languages: Bengali (Native), English (C2), German (B2)

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Resume

My professional and academic journey so far...

Apr 2026 - Present

Packaged App Development Senior Analyst

Accenture Solutions Private Limited

Improved backend services for the organization by utilizing object-oriented programming principles to develop maintainable and scalable components that meet business requirements, utilizing Java 21 Spring Boot and Lombok
Developed backend services utilizing APIs and reactive processing through Project Reactor (Flux) while integrating Azure Cosmos DB, Azure Service Bus and IBM MQ for data persistence and asynchronous communication.
Improved the quality of code, security of dependencies and observability of the applications through SonarQube, Snyk and Kibana, and utilize Jenkins, Bitbucket and Rancher for implementing CI/CD and deployment of applications.
Worked with multiple teams to analyze the requirements, debug issues and perform peer code reviews to document the solutions using Jira and Confluence, while using GitHub Copilot for improving code quality

May 2025 - Dec 2025

Application Programmer

Web Spiders (India) Pvt Ltd

Created and launched fullstack applications using React.js, Next.js, and Node.js, decreasing page load time by 30% and reducing 'bounce' rates through enhanced SEO and responsive UI/UX.
Integrated OpenAI, Mistral, and Anthropic API's to give AI-driven functionality, including code generation, intelligent content suggestions, and natural language responses leading to a 25% increase in user engagement on vital features.
Designed and secured RESTful API's, and created dynamic frontend components using JavaScript (ES6+), HTML5, CSS3, Tailwind CSS, and Material UI which reduced bug reports by 40% and improved the quality of the code and consistency among UI's.
Worked with other developers in Agile sprints, which produced new features with JWT-based authentication, third-party integrations (Firebase, Stripe), and performance optimizations that decreased API response times by 35% on average.

Apr 2024 - Jan 2025

Software Developer

Codelogicx Technologies

Mentored and developed 3 junior software developers, resulting in a reduction in code review time by 20% and project deadlines were met as processes were compliant with best practices.
Developed backend services using Java, Spring Boot and Hibernate, producing a 30% lower latency along with 99.9% uptime and allowing more than 3,000 concurrent users
Designed responsive front-end features using Vue.js and Nuxt.js, producing a 25% increase in user engagement and a 15% increase in average session length.
Took part in the design and product team in product development cycle from conception to preproduction deployment stage, ensuring to support project and product goals and requirements.

Jun 2022 - Apr 2024

Junior Software Developer

Codelogicx Technologies

Improved API documentation allowed for increased readability and maintainability, ultimately reducing onboarding time for new developers by 25%.
Refactored and improved user experience with accessible layouts in React.js and Next.js, positively impacting accessibility compliance scored by 20%
Improved backend performance using Node.js, Express.js and Hapi.js, reduced latency by 30% while optimizing the database to support 200 queries per second.
Enhanced and structured 50+ API routes, improving scalability and reducing the error rate by 15%.

Mar 2022 - Jun 2022

Trainee Software Developer

Codelogicx Technologies

Practical experience with both backend and frontend frameworks such as Node.js, Vue.js, and React.js; completing 3 end-to-end project prototypes within the training duration.
Demonstrated proficiency in understanding and implementing coding standards & best practices.
Acquired skills in using the different frontend and backend frameworks to enhance the functionality and usability of web applications.

Aug 2018 - Aug 2021

Bachelors in Computer Application

Meghnad Saha Institute of Technology

Practical experience with both backend and frontend technologies and frameworks such as Java, Spring Boot, Node.js, Vue.js, Nuxt.js, React.js, and Next.js; completing 3 end-to-end project prototypes within the training duration.
Demonstrated proficiency in understanding and implementing coding standards & best practices.
Acquired skills in using the different frontend and backend frameworks to enhance the functionality and usability of web applications.

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