Sachin Shrivastav
Full-Stack SaaS Developer | Node.js, TypeScript, React
Ready for work
Sachin is ready for their next project!
I've contributed as a lead engineer to a multi-tenant HR SaaS platform, owning major backend architecture and full-stack feature delivery.
I designed and built a workflow and approval engine supporting parallel execution, quorum-based approvals, delegation, SLA-based escalation, decision tables, and sub-workflows. I also built its visual workflow designer, template/document generation, forms, search, authorization, integrations, and observability capabilities.
The platform uses TypeScript, Cloudflare Workers, Hono, PostgreSQL, Drizzle ORM, React, TanStack, Cerbos, and OpenTelemetry.
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Built and maintained major parts of a production real estate technology platform covering property management, leads, referrals, tours, analytics, reporting, and third-party integrations.
I owned substantial backend and frontend functionality using NestJS, PostgreSQL, Prisma, Redis, React, Redux Toolkit, AWS, and Socket.io (http://Socket.io).
My work included high-volume analytics, database optimization, reporting pipelines, timezone-aware scheduling, complex forms, multi-tenant functionality, and integrations with external real estate and productivity platforms.
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Built a distributed data ingestion system for collecting listing, lead, and analytics data from multiple real estate data sources.
The system used Python, FastAPI, Celery, Redis, Selenium Grid, and Docker to coordinate authenticated scraping across concurrent workers.
I designed shared session management using Redis locks and pub/sub, parallelized scraping workloads with Celery, and implemented missing-page reconciliation to improve reliability.
The production pipeline was designed to process large ingestion workloads reliably without manual intervention.
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Developed and deployed Vexa, an AI-powered counseling platform connecting clients with AI assistants tailored to individual counselors and enabling clients to interact with human counselors.
Built the application using Next.js, Material UI, Supabase, and OpenAI. Implemented counselor-specific AI assistants, real-time client conversations, separate client and counselor dashboards, appointment scheduling, and conversation history.
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