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.
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.
Successfully reduced React and Next.js page load times by up to 40% via virtualization and state optimizations.
Engineered robust prompts for OpenAI/Claude and basic MCP integrations, alongside client-side ML parsing.
Designed secure, role-based, audit-ready portals compliant with stringent healthcare standards.
Scaled unit and integration test coverage from 60% to 90%, significantly decreasing production regressions.
Work Experience
Senior Developer
WiproLeading 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.
Software Developer (Promoted to SDE 2)
Deltek RepliconTook 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.
Projects Showcase
Meeting Memo Studio
AI-powered transcript synthesis platform that parses raw meeting scripts and structures them into action items, decisions, and summaries.
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.
- JSON-mode model endpoints with strict schema validations.
- Custom TypeScript schema normalizer to map varied transcript structures.
- Interactive timeline and checklist views for items.
Guarantees structured API outputs, reducing post-processing error rates to near zero, and saving teams hours of manual review.
Fashion Shot Generator
In-browser client-side ML pipeline that maps human pose keypoints to crop and isolate garments from catalog model images.
Extracting garment crops historically required uploading image catalogs to remote GPU-backed ML clusters, incurring significant network latency and high cloud compute bills.
- PoseNet model loaded locally inside the web browser.
- HTML5 canvas region rendering and crop math.
- Zero server dependencies allowing offline processing.
Eliminated backend hosting costs for ML nodes and reduced crop extraction latency to milliseconds, delivering an instant UI experience.
NPI Access Management
Enterprise healthcare portal for managing National Provider Identifier registry workflows, permissions, and approvals.
Managing compliance verifications and role permissions for Billing Houses, Providers, and Admins was manual, slow, and highly vulnerable to security gaps.
- Secure role-based access control (RBAC) schemas.
- Dynamically orchestrated multi-step validation forms.
- Full compliance audit logs tracking provider changes.
Successfully onboarded and secured records for 50K+ active users, cutting verification processing times significantly.
Enterprise Scheduling UI
Interactive schedule board managing bulk shifts, custom rules, and overtime assignments across high-scale teams.
Rendering hundreds of shift cards on a single page with custom overlaps caused DOM bloat, heavy script execution, and laggy drag-and-drop operations.
- Virtualized list rendering keeping active DOM nodes low.
- Optimized Redux store updates reducing unnecessary redraw cycles.
- Drag-and-drop actions with collision validation.
Boosted client-side interaction performance by 40%, serving over 100K+ concurrent users with zero UI lag.
Technical Skills
Frontend Engineering
Backend & Database
Cloud, DevOps & Tooling
Gen AI & Testing
Certifications & Achievements
Architecting Solutions on AWS
Deep certification path verifying competency in resilient systems design, load balancers, serverless lambda infrastructure, and security groups.
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.
CNN for Computer Vision
Specialized course covering convolutional networks, object localization, image segmentation, and practical model executions.
AWS Technical Essentials & Fundamentals
Foundation path verification for cloud hosting, data stores (S3/DynamoDB), and identity policy integrations (IAM).
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Get In Touch
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