Hi 👋
I'm Siddhant Deval
Senior Full-Stack Engineer with 4+ years building production-grade SaaS platforms — from a workforce system scaled to 10k+ users with 1k+ daily active users, to a centralised React SDK powering 3 flagship 3D design platforms, to cross-border HRIS portals for international health NGOs. I specialise in frontend performance (bundle optimisation, SSR/ISR, Core Web Vitals), scalable backend design (REST/GraphQL, PostgreSQL, Redis), observability (Sentry), and cloud infrastructure (AWS, Docker, CI/CD).
Core Competencies
I build scalable full-stack web applications, SaaS platforms, and high-performance user interfaces using modern JavaScript frameworks and cloud-ready architectures. My work focuses on delivering reliable systems that balance performance, usability, and long-term maintainability.
Frontend
Backend
Security
Tools
Other
DevOps
Performance
Observability
Generative AI
Featured Projects
High-performance applications driving real-world business impact
iJewel Design
A professional 3D jewellery showcase platform supporting 2k+ models for a user base of 400+ designers. Built with Next.js and a centralised React SDK shared across 3 flagship platforms. Reduced the embedded iframe initial bundle by 50% (~5MB → ~2.5MB), improving Lighthouse scores and SEO visibility for third-party domains.
Large iframe bundles and redundant API requests degraded performance on third-party domains, hurting Lighthouse scores and SEO discoverability for 400+ professional designers.
Engineered a B2B iframe embedding system with a custom code generator; built a centralised React SDK as a shared internal package with versioned releases; applied intelligent caching, lazy loading, and elimination of redundant API requests.
Reduced initial bundle size by 50% (~5MB → ~2.5MB), improving load times and Lighthouse scores across all third-party embedding domains.
iJewel Playground
A high-fidelity 3D jewellery editor for real-time design creation, material customisation, and shareable model embedding. Built with Vite and a proprietary internal React SDK, using Redux for complex state management of live material effects and model customisations across a library of 2k+ 3D models.
Designers lacked a real-time collaborative tool to iterate on 3D jewellery designs and embed or share them externally with clients.
Built intricate UI controls for real-time material effects using a centralised internal React SDK; engineered a B2B iframe embedding system with a custom code generator for seamless external integration.
Cut design iteration time by 40%, enabling faster collaboration and expanding the platform's B2B embedding footprint.
Urbantasker
A two-sided service marketplace SaaS supporting 300+ professionals and homeowners with 100+ daily active users. Implemented ISR/SSR via Next.js for sub-second page loads, Stripe tiered subscriptions, RBAC, GraphQL resolvers, and data-masking to protect user privacy for premium subscribers.
The platform needed rapid search-engine indexing, secure tiered payment flows, and user privacy protection — all while handling concurrent GraphQL requests without performance degradation.
Implemented ISR and SEO optimisations for sub-second page loads; built custom GraphQL resolvers, dynamic pricing APIs, and Stripe subscription tiers; engineered data-masking logic revealing contact details only to authenticated premium subscribers; containerised with Docker and CircleCI CI/CD on AWS EC2.
Grew to 300+ professionals and homeowners with 100+ DAU; achieved sub-second page loads and strong search-engine indexing through ISR/SSR optimisations.
Jumby Bay IDs Logger
A high-concurrency workforce SaaS platform scaled to 10k+ users with 1k+ daily active users. Architected a Triple-Database system (Live, Archive, History) for sub-second query performance on active data, and a Bulk-Sync Engine for real-time NFC hardware integration with offline support for remote security checkpoints.
The resort needed to track 1k+ personnel across ferry/bus transport, canteen usage, and security zones — in real time — using handheld NFC scanners that frequently operated offline.
Designed a Triple-Database architecture (Live, Archive, History) for sub-second queries on active data; built a Bulk-Sync NFC engine for offline-resilient hardware integration; integrated Google Maps API for real-time asset and security zone tracking; deployed on AWS App Runner via Docker and GitHub Actions CI/CD.
Scaled to 10k+ users with 1k+ DAU; reduced manual administrative overhead by 40%; enabled 24/7 site operations with zero-downtime deployments.
Professional Experience
A track record of delivering high-impact solutions and driving technical excellence.
Freelance
- Designed an end-to-end HRIS Portal for Jhpiego (international health NGO) using React.js and Node.js, supporting 700+ users with a 40% daily active user rate and sustaining traffic of 100–150 RPS.
- Engineered a cross-border Monitoring & Evaluation Platform operating across Zambia and Nepal, featuring a live heartbeat-based monitoring system for real-time engagement and device usage tracking.
- Built and maintained automated CI/CD pipelines on AWS and DigitalOcean — covering staging, testing, and production stages — ensuring zero-downtime deployments and 99.9% availability for health-sector clients.
- Developed scalable backend architectures for international NGOs, handling high-concurrency requests and large-scale data synchronisation across geographically distributed deployments.
iJewel3D
- Scaled and enhanced a 3D jewellery design suite using Next.js and Redux, supporting a library of 2k+ 3D models for a professional user base of 400+ designers.
- Contributed to a centralised React-based SDK for CAD rendering — serving as the core UI engine across 3 flagship platforms (iJewel Design, iJewel Playground, iJewel Drive) — structured as a shared internal package with versioned releases.
- Engineered a B2B iframe embedding system allowing designers to integrate high-fidelity 3D rendering into external sites via a custom-built code generator.
- Optimised application performance by reducing the embedded iframe initial bundle size by 50% (~5MB → ~2.5MB) and eliminating redundant API requests, improving load times and Lighthouse scores on third-party domains.
- Refactored legacy frontend modules, replacing inefficient patterns with optimised architectures that significantly reduced technical debt and improved system stability.
Enbake Consulting
- Architected and scaled Jumby, a workforce SaaS platform, to 10k+ users with 1k+ DAU — designing a Triple-Database system (Live, Archive, History) for sub-second query performance and a Bulk-Sync Engine for real-time NFC hardware integration with offline support.
- Maintained 75%+ unit and integration test coverage on core Jumby modules using Jest and React Testing Library; conducted regular code reviews and mentored 2 junior engineers on component architecture best practices.
- Delivered 10+ IoT visualisation SPAs for end-client M2 Cloud, integrating microservices via RESTful APIs to power real-time industrial telemetry dashboards with live charting.
- Built UrbanTasker, a two-sided service marketplace, implementing dynamic pricing APIs, RBAC, GraphQL resolvers, Stripe subscription flows, and ISR/SSR via Next.js for sub-second page loads.
- Managed cloud infrastructure on AWS App Runner using Docker and GitHub Actions, maintaining 99.9% system availability; integrated Sentry for real-time error tracking and performance monitoring across all production services.
- Automated nightly data archiving pipelines via cron jobs, reducing manual administrative overhead by 40%.
Engineering Principles
How I approach building scalable and reliable systems.
Scalability First
Design systems for horizontal growth and maintainability from day one.
Security by Design
Build secure APIs and backend services with OWASP best practices baked in.
Production Performance
Prioritize performance and reliability in every deployment decision.
Clean & Modular Code
Write testable, self-documenting, and reusable modules across the stack.
User-Centric UI
Frontend performance is user experience — every millisecond matters.
About Me
Full Stack Developer with 4+ years of experience building modern, high-performance web applications. I specialize in transforming ideas into reliable, user-focused digital products.
My journey started early, exploring the fundamentals of programming and developing a strong curiosity for how things work. Over time, that curiosity grew into a disciplined approach to solving problems through clean, thoughtful engineering.
With a BSc in Computer Science and hands-on experience across both frontend and backend systems, I’ve contributed to scalable architectures, intuitive interfaces, and robust application logic for products used in real-world environments.
Today, I focus on creating software that is efficient, maintainable, and purposeful—whether it’s crafting responsive UI experiences or architecting backend systems designed for long-term growth.
Education
Academic foundation and ongoing learning.
Kumaun University Nainital
Bachelor of Science
Computer Science
Blog & Insights
Engineering insights on performance, architecture, and full-stack development.
Frequently Asked Questions
Siddhant Deval is a Senior Full-Stack Engineer with 4+ years of experience building production-grade SaaS platforms — including a workforce management system scaled to 10k+ users with 1k+ daily active users, a centralised React SDK powering 3 flagship 3D design platforms, and cross-border HRIS portals for international health NGOs.
He specialises in React, Next.js, TypeScript, Node.js, Express, PostgreSQL, Redis, GraphQL, and AWS. He also has deep expertise in frontend performance (bundle optimisation, SSR/ISR, Core Web Vitals), observability (Sentry), containerisation (Docker), and CI/CD pipelines (GitHub Actions, CircleCI).
He offers end-to-end full-stack engineering — from high-performance React & Next.js frontends with SSR/ISR and Core Web Vitals optimisation, to scalable backend APIs with PostgreSQL, Redis, and GraphQL, to cloud infrastructure on AWS and DigitalOcean with full CI/CD automation.
He is based in New Delhi, India, and works remotely with clients globally — including international health NGOs in Zambia and Nepal, a Singapore-based 3D design platform, and a Caribbean resort workforce system.
Let's build something
great together.
Looking for a driven engineer to bring your ideas to life or scale your existing product? I'm always open to discussing new opportunities.