Case Studies

Projects across AI, automation, and data-rich platforms.

A selection of production systems I've designed and built end-to-end — spanning AI-powered recruitment, privacy-first AI products, identity verification, and commerce operations.

AI Recruitment Platform Talent & Hiring

Crayon.jobs

An all-in-one recruitment platform with a service-oriented backend, an API gateway, and dedicated document-processing services. Built AI-powered CV parsing, job-spec parsing, recruiter/candidate conversational workflows, semantic candidate-job matching, and realtime AI interviews.

CV ingestion pipeline: SES → Lambda → S3 → SQS → worker → AI parsing → PostgreSQL
Deterministic + semantic matching using embeddings in PostgreSQL with pgvector
Realtime AI interviews via OpenAI Realtime, WebRTC, and AWS MediaConvert
Python/FastAPI document extraction microservice with AI fallback

Node.js Python / FastAPI PostgreSQL + pgvector AWS OpenAI

Privacy-First AI Product Wellbeing & Reflection

The Bridge

A privacy-first AI reflection platform built end-to-end from concept to production — system design, infrastructure-as-code, API implementation, data model, AI layer, and privacy architecture.

Pure serverless AWS: ~40 single-purpose Lambdas, 13 DynamoDB tables, EventBridge
Realtime streamed AI conversations via a Lambda Function URL + Anthropic Claude
Privacy-first identity: KMS-encrypted email ciphertext + HMAC-SHA256 hashing
Aggregate-only insights engine analyzing anonymous transcripts, no individual profiling

AWS Lambda DynamoDB Anthropic Claude KMS SAM / CloudFormation

Identity Verification Documents & Compliance

Document Verification System

A document verification platform for validating identity and education documents — Aadhaar, PAN, and degree certificates — using DigiLocker APIs.

REST APIs for frontend integration, delivered end-to-end
Microservice architecture containerized with Docker
Deployed and operated the production system on AWS EC2

Node.js Express.js TypeScript MySQL Docker AWS EC2

Commerce Operations Multi-Channel Retail

Bookcommerce

Backend services for a multi-channel bookselling platform covering orders, inventory, fulfillment, repricing, and marketplace operations.

Core modules: authentication, inventory, orders, settings, reports, channels, notifications
REST APIs powering multi-channel order and inventory management
Contributed to production deployment and release management on GCP

Node.js Express.js MongoDB React.js GCP

Website Design & Development Industrial & Energy

Samyak Energy

Designed, built, and deployed a fast, mobile-responsive corporate website for an energy-efficiency and energy-management consultancy, from sitemap to live production in one week.

Hand-built, responsive pages: Home, About, Services, Our Approach, Why Us, Contact
Working enquiry form with email delivery and spam protection
Domain, DNS, SSL, deployment, and on-page SEO handled end-to-end

HTML CSS JavaScript SEO

Website Design & Development Construction & Industrial

Quality Coats

Designed and built a website for an architectural and industrial powder coating company with 30+ years of experience, presenting their services, capabilities, and project portfolio to builders and industrial clients.

Hand-built, responsive site covering services, capacity, and completed projects
Project portfolio showcase for architectural and industrial coating work
Enquiry pathway built for B2B lead generation

HTML CSS JavaScript SEO

Marketplace Platform Creator Economy

Swisscurity

Backend and platform engineering for a marketplace connecting creators, agencies, and brands — supporting profiles, listings, and collaboration workflows between the three sides of the platform.

REST APIs powering creator, agency, and brand profiles and listings
Core marketplace workflows for discovery and collaboration matching
Built with production reliability in mind as the platform grows

Node.js TypeScript PostgreSQL AWS