Karthikeyan Selvaraj
Salem
Summary
Innovative Full Stack Engineer with 5 years of experience in developing scalable web applications and AI-driven solutions. Skilled in end-to-end product delivery using React, Svelte, TypeScript, Node.js, Python, PostgreSQL, and MongoDB. Expertise in creating RAG applications and intelligent workflows with Azure AI Foundry, prioritising performance, usability, and maintainability.
Overview
5
5
Languages
1
1
Certification
5
5
years of professional experience
Work History
Full Stack Engineer
Syneos Health
Salem
03.2023 - Current
- Built and delivered scalable enterprise web applications and healthcare dashboards using React, Svelte, TypeScript, Node.js, and REST APIs, with a focus on performance, usability, and maintainable architecture.
- Developed applications from ground up, translating business and user requirements into scalable, production-ready solutions that enhanced user experience.
- Built backend services and REST API integrations using Node.js, Fastify, and PostgreSQL to support enterprise application workflows.
- Delivered clinical and research dashboards including Apollo, IEP, and Neurotech, using React, Svelte, ECharts, and Leaflet to build interactive charts, maps, and data visualizations.
- Built reusable UI components adopted across multiple enterprise applications, improving development consistency and reducing duplicated implementation effort.
- Contributed to AI-powered solutions using Azure AI Foundry, RAG, AI Agents, function calling, and prompt engineering to improve analytical capabilities.
- Conducted internal React.js training sessions for over 10 team members, boosting frontend development skills and fostering knowledge sharing within the team.
Frontend Developer
RxDataScience Inc.
Salem
04.2022 - 03.2023
- Built app builder platform from ground up, enabling rapid assembly and deployment of custom dashboards, reducing initial development time.
- Designed a flexible dashboard customization system, allowing users to configure layouts, widgets, and themes to match client requirements.
- Delivered client-specific dashboards by translating business requirements into functional, production-ready interfaces, enhancing client satisfaction and usability.
- Led application restructuring efforts to improve maintainability and scalability, reducing development time for new dashboard rollouts.
Frontend Developer-Trainee
Dattendriya Data Science Solutions
Salem
01.2022 - 04.2022
- Collaborated closely with senior developers to understand requirements quickly and translate designs into functional, responsive interfaces.
- Gained hands-on experience in frontend workflows, structuring local components and conducting cross-browser testing to ensure consistent user experiences.
- Built the modern UI for internal application 'FolksWagen’ within 6 days, earning appreciation from the team for speed and quality.
Frontend Developer - Intern
Nunnari Labs
Coimbatore
03.2021 - 08.2021
- Developed responsive web applications and landing pages with a web-first development approach to enhance user experience.
- Evaluated UI and UX designs for technical feasibility, ensuring seamless implementation and functionality.
- Developed and maintained responsive website designs, improving user experience across various devices.
- Developed responsive website layouts, improving user experience across various devices and browsers.
- Utilised JavaScript, HTML, and CSS to create interactive and visually appealing web pages.
Education
Bachelor's Degree - Electronics & Communication Engineering
Sona College of Technology
Salem05-2021
Diploma - Electronics & Communication Engineering
Thiagarajar Polytechnic College
Salem04-2018
Skills
- React
- Svelte
- Nextjs
- TypeScript
- JavaScript (ES6)
- Nodejs
- Expressjs
- REST APIs
- Fastify
- PostgreSQL
- MongoDB
- SQL
- Azure Cosmos DB
- Data Pipeline Management
- Prompt Engineering
- GIT version control
- Authentication Protocols
- Security Best Practices
- Git
- Docker
- CI/CD Pipelines
- Tailwind CSS
- HTML5
- CSS3
- Figma
- Redux
- Figma
Certification
- AI Agents – Beginner to Pro: Azure AI Foundry Agent Service, Udemy, 2026
- React JS, Certificate of Excellence, Credo Systemz, 2022
- The Ultimate MySQL Bootcamp: SQL Beginner to Expert, Udemy, 2025
Languages
English
Tamil
Kannada
Telugu
Malayalam
Custom
- Enterprise RAG Assistant, Azure AI Foundry, RAG, LLMs, AI Agents, Function Calling, Built an enterprise RAG application that enables employees to retrieve context-aware answers from internal knowledge sources within 2-5 seconds. Implemented AI Agent workflows, function calling, and prompt engineering to support multi-step interactions and improve response relevance.
- AI Registry Platform, Next.js, React, TypeScript, Fastify, REST APIs, Azure, Docker, Built an enterprise platform to centrally manage AI assets, agents, and prompts, including governance workflows and approval processes for AI asset lifecycle management.
- Enterprise Dashboard Platform (AppBuilder), Svelte, Node.js, TypeScript, SQL, Developed a low-code dashboard builder enabling business users to create dashboards via simple UI selections (grid, table, chart, map), reducing configuration time by 30%.
- DataMask: Data Anonymization Platform, Svelte, Node.js, SQL, PostgreSQL, Built an automated data-masking platform to securely anonymize sensitive client data for testing environments, reducing manual masking effort by 60%.
- Apollo Clinical Dashboard, React, Svelte, Node.js, Leaflet, SQL, Built clinical and research dashboard modules from scratch, including geospatial visualizations and performance optimization for large datasets.
Timeline
Full Stack Engineer
Syneos Health
03.2023 - Current
Frontend Developer
RxDataScience Inc.
04.2022 - 03.2023
Frontend Developer-Trainee
Dattendriya Data Science Solutions
01.2022 - 04.2022
Frontend Developer - Intern
Nunnari Labs
03.2021 - 08.2021
Bachelor's Degree - Electronics & Communication Engineering
Sona College of Technology
Diploma - Electronics & Communication Engineering
Thiagarajar Polytechnic College