Hi, I'm Sahil Raj

Senior Full Stack Developer specialized in engineering robust, high-performance web systems using React.js, Next.js, Node.js, TypeScript, designing optimized SQL & NoSQL databases, and scaling on AWS.

~5 Years Experience
100K+ Users Supported
40% UI Performance Gain
90% Test Coverage Reached
Sahil Raj Profile Photo

About Me

I am a **Senior Full Stack Developer** with **nearly 5 years of industry experience** designing and scaling robust web applications. I focus on implementing elegant architectures, optimizing core vitals for stellar frontend performance, and introducing secure, scalable Gen AI integrations that streamline operations.

My expertise spans the entire development lifecycle, from setting up scalable infrastructures on **AWS** to optimizing state management, enhancing UX/UI responsiveness, and establishing thorough test automation pipelines. I thrive on collaborating within Agile teams, reviewing code with high engineering standards, and mentoring junior developers to foster high-performing teams.

High Performance Focus

Successfully reduced React and Next.js page load times by up to 40% via virtualization and state optimizations.

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Gen AI & Prompting

Engineered robust prompts for OpenAI/Claude and basic MCP integrations, alongside client-side ML parsing.

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Enterprise Compliance

Designed secure, role-based, audit-ready portals compliant with stringent healthcare standards.

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High Quality Testing

Scaled unit and integration test coverage from 60% to 90%, significantly decreasing production regressions.

Work Experience

Senior Developer

Wipro
July 2025 – Present Bengaluru, India (Hybrid)

Leading full-stack engineering of enterprise platforms, security implementations, and mentoring junior engineers.

  • Architected healthcare NPI portal using Next.js (SSR/ISR), TypeScript, and Spring Boot REST APIs, creating a custom reusable design system and securing role-based workflows for 50K+ users.
  • Engineered dynamic form orchestration and real-time backend validation schemas, accelerating new feature shipping speed across the team.
  • Mentored a team of 3 junior developers on front-end rendering logic, TypeScript safety levels, and custom React hook development, boosting overall delivery standards.
Next.js (SSR/ISR) TypeScript Spring Boot AWS Lambda EC2 S3 REST APIs

Software Developer (Promoted to SDE 2)

Deltek Replicon
Oct 2021 – July 2025 Bengaluru, India

Took ownership of cross-team feature delivery, performance optimization, and testing coverage for Core Time & Attendance products.

  • Promoted to SDE 2 (Oct 2024) for technical ownership and reliable shipping of critical enterprise Polaris and scheduling features.
  • Delivered 6+ high-impact features improving platform responsiveness by 30% for a global user base of 100K+ (including Overtime and Rest Day Assignment).
  • Boosted rendering speed by 40% on high-scale lists by virtualizing views, streamlining Redux storage, and avoiding excessive re-renders.
  • Built enterprise Scheduling UI using React and a Node.js/GraphQL server, enabling fluid drag-and-drop operations and bulk actions.
  • Increased test coverage from 60% to 90% utilizing Jest and React Testing Library, reducing production bug occurrence rates.
  • Managed AWS hosting nodes (EC2, S3, and CloudWatch logs) to maintain high availability and scale dynamically.
React.js Redux Node.js Express GraphQL AWS CloudWatch Jest React Testing Library

Projects Showcase

Gen AI

Meeting Memo Studio

AI-powered transcript synthesis platform that parses raw meeting scripts and structures them into action items, decisions, and summaries.

Problem Solved:

Transcripts from multi-hour calls are verbose and hard to digest. Standard LLMs often produce inconsistent schema outputs when queried for JSON structures, causing client-side rendering parser errors.

Key Features:
  • JSON-mode model endpoints with strict schema validations.
  • Custom TypeScript schema normalizer to map varied transcript structures.
  • Interactive timeline and checklist views for items.
Impact:

Guarantees structured API outputs, reducing post-processing error rates to near zero, and saving teams hours of manual review.

Next.js 14 TypeScript Tailwind CSS OpenAI API Groq
Computer Vision

Fashion Shot Generator

In-browser client-side ML pipeline that maps human pose keypoints to crop and isolate garments from catalog model images.

Problem Solved:

Extracting garment crops historically required uploading image catalogs to remote GPU-backed ML clusters, incurring significant network latency and high cloud compute bills.

Key Features:
  • PoseNet model loaded locally inside the web browser.
  • HTML5 canvas region rendering and crop math.
  • Zero server dependencies allowing offline processing.
Impact:

Eliminated backend hosting costs for ML nodes and reduced crop extraction latency to milliseconds, delivering an instant UI experience.

React.js TypeScript TensorFlow.js PoseNet
Access & Compliance

NPI Access Management

Enterprise healthcare portal for managing National Provider Identifier registry workflows, permissions, and approvals.

Problem Solved:

Managing compliance verifications and role permissions for Billing Houses, Providers, and Admins was manual, slow, and highly vulnerable to security gaps.

Key Features:
  • Secure role-based access control (RBAC) schemas.
  • Dynamically orchestrated multi-step validation forms.
  • Full compliance audit logs tracking provider changes.
Impact:

Successfully onboarded and secured records for 50K+ active users, cutting verification processing times significantly.

Next.js (SSR/ISR) TypeScript Spring Boot AWS Lambda
Performance Optimization

Enterprise Scheduling UI

Interactive schedule board managing bulk shifts, custom rules, and overtime assignments across high-scale teams.

Problem Solved:

Rendering hundreds of shift cards on a single page with custom overlaps caused DOM bloat, heavy script execution, and laggy drag-and-drop operations.

Key Features:
  • Virtualized list rendering keeping active DOM nodes low.
  • Optimized Redux store updates reducing unnecessary redraw cycles.
  • Drag-and-drop actions with collision validation.
Impact:

Boosted client-side interaction performance by 40%, serving over 100K+ concurrent users with zero UI lag.

React.js Redux Node.js GraphQL

Technical Skills

Frontend Engineering

React.js Next.js (SSR/ISR) TypeScript JavaScript (ES6+) Redux Toolkit React Query Tailwind CSS Material UI

Backend & Database

Node.js Express.js Spring Boot REST APIs GraphQL Microservices PostgreSQL MySQL

Cloud, DevOps & Tooling

AWS (EC2, S3, Lambda) AWS CloudWatch Elasticsearch Docker Webpack Vite Git & GitHub CI/CD pipelines

Gen AI & Testing

OpenAI API Claude API Generative AI Prompt Engineering MCP (Basic) TensorFlow.js Jest React Testing Library

Certifications & Achievements

Cloud Architecture 2024

Architecting Solutions on AWS

Deep certification path verifying competency in resilient systems design, load balancers, serverless lambda infrastructure, and security groups.

Career Growth 2024

Promoted to SDE-II (Software Developer 2)

Elevated at Deltek Replicon ahead of timeline for core module ownership of Polaris and Scheduling products, reducing codebase tech debt, and mentoring new hires.

Computer Vision 2023

CNN for Computer Vision

Specialized course covering convolutional networks, object localization, image segmentation, and practical model executions.

Cloud Basics 2022

AWS Technical Essentials & Fundamentals

Foundation path verification for cloud hosting, data stores (S3/DynamoDB), and identity policy integrations (IAM).

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