I'm Sahil Verma — Full-Stack Developer & Owner of Cynthius Studios. I build full-stack AI products end-to-end: Next.js, agentic backends, RAG pipelines, payments, self-hosted infra. Trusted by founders from USA, Australia, Romania, Netherlands, and beyond.
Full Stack AI Engineer who ships production-grade AI agents, RAG systems and full-stack apps end-to-end. Built the stack for a Google AI–accelerated 3D agent startup, India's largest couple-therapy platform, and corporate travel & communication infrastructure used by Fortune-tier Indian enterprises. Comfortable owning every layer — Next.js / React, NestJS / Fastify, agentic pipelines on Google ADK, PGVector, real-time WebSockets, and self-hosted Linux infra on GCP and AWS.
From Google-accelerated AI startups to enterprise corporate-travel platforms. A handful of named work below — picked from hundreds of shipped projects over 8+ years across India, the US, the EU, and beyond. Drag, scroll, or swipe.
India's largest couple-therapy platform
Built end-to-end the digital infrastructure powering 20K+ paid sessions and 3K+ couples — from plan checkout, therapist matching, Meet scheduling and payments to intake forms and an authenticated client portal. Founder featured on Raj Shamani's podcast; 591K+ Instagram following. Sole engineer for architecture, deployment, and ongoing operations.
Google Accelerator-backed AI guide
Architected a full agentic AI platform on NestJS + Next.js using Google's ADK for multi-agent orchestration. RAG pipeline ingests PDFs, FAQs, schedules, URLs, and media into PGVector for semantic retrieval. Tool-using agents handle search, mapping, and personalization with realtime TTS/lip-sync 2D/3D avatars across 150+ languages.
Corporate travel for India's top PE firms
Self-booking platform handling flights, hotels, and chauffeurs for 10 of India's largest financial firms. Integrated multiple GDS APIs, company travel policies, multi-traveler bookings, and GST-compliant automated invoicing into the corporate ledger. Replaced a manual agent-driven workflow while preserving the 24×7 single-point-of-contact model.
Omnichannel agent dashboard
Built a unified WebSocket-powered dashboard for one of India's largest enterprise comms platforms (clients: Physics Wallah, Max, Atomberg). Channel-agnostic message abstraction unifies WhatsApp, SMS, RCS, and email into one inbox. A single agent handles dozens of concurrent customer threads with sub-second delivery, presence, read receipts, and full audit-trail persistence.
India's fastest-growing edtech
Trusted by 50K+ parents globally for live 1:1 classes (3–15 yrs) across English, Maths, languages, chess and life skills with Oxford-alumni curriculum. Built across student, teacher, and parent portals on Next.js + NestJS — trial booking, dynamic SEO landing pages per subject/language, and progress tracking. Tuned Core Web Vitals to power organic growth across India and abroad.
AI study buddy for top private schools
Curriculum-aligned RAG tutor grounded in Cambridge, Edexcel, and AQA syllabi for GCSE, IGCSE and A-Levels. Built the practice engine (question generation + automated mark-scheme grading), AI flashcards tuned to student progress, and the gamified Islands of Knowledge map. Real-time chat, parent dashboards, and role-based access for students, parents, and schools.
Agentic AI for a Dutch agency
In-house agentic platform for a 4.8-rated Dutch digital agency (100+ projects shipped). Multi-agent backend on Next.js automates website concept generation, SEO landing-page drafting, lead intake, proposal writing, and CRM follow-ups. Vector knowledge store of past projects with human-in-the-loop review lets a 5-person team operate at large-agency throughput.
End-to-end US offshoring platform
Full-stack platform helping international founders launch and run a US business presence. Built entity-formation flows, banking + EIN onboarding, document workflows, Stripe billing, and an authenticated dashboard for ongoing compliance. Designed for non-US founders with multilingual content and conversion-tuned pricing pages.
Therapy practice site
WordPress-based therapy practice site for the US market with appointment scheduling, therapist profiles, and a calm trust-first design. Tuned for local SEO, conversion-focused booking flows, and modality/insurance filtering so prospective clients find the right therapist faster.
Therapist site & resource hub
WordPress site for a US therapy practice with intake flow, blog/resource library, and lead-gen pages tuned to local search intent. Calm visual language, fast page loads, and clean booking integration designed to lower the barrier to first contact.
Compassion-first counseling site
WordPress counseling platform with therapist matching content, intake forms, and conversion-tuned landing pages. Built around a compassion-first visual identity and accessibility cues to lower the barrier to seeking care.
Corporate IT consulting
Corporate IT consulting site with service showcases, team management, and lead-generation flows. Clean, professional design optimized for SEO and inbound conversion across enterprise buyer journeys.
Fitness & coaching platform
Fitness transformation platform with workout plans, progress tracking, and trainer–client dashboards. Engagement-driven Next.js front-end with mobile-first UX, retention loops, and content modules for ongoing coaching programs.
High-end consulting
Consulting platform with rich-media showcases, multilingual content, and client portals tailored to the Dominican market. Built for premium buyer experience with editorial-grade design and bilingual content workflows.
I cover the full stack — from agentic AI backends down to nginx config — so you don't have to coordinate a five-person team to ship a v1.
Multi-agent systems with tool use, RAG pipelines on PGVector / Pinecone, and orchestration with Google ADK or custom routers — production-grade, not demos.
Next.js + Prisma + Postgres or NestJS + Fastify backends. Auth, payments, dashboards, role-based access — shipped end-to-end in 4 weeks.
Linux, Nginx, Certbot, GCP & AWS. Save up to 80% on Vercel/SaaS bills with hardened, monitored deployments and bullet-proof CI/CD.
Internal tools, CRM automations, lead pipelines, agentic ops. Replace manual ops with software that actually closes the loop.
Stripe / Razorpay / PayPal flows, transactional email infra, on-chain wallet auth and smart-contract integrations.
Core Web Vitals, structured data, dynamic SEO landing pages — built for organic growth from day one, not bolted on later.
One engineer, full ownership. No enterprise pricing theater, no five-week scoping cycles. Pick the shape that fits — start in days, not quarters.
For specific bug-fixes, integrations, or short engagements.
Production MVP — auth, payments, dashboards, AI flows.
For companies scaling a product I shipped — or partnering long-term.
Indian, US, and EU founders welcome · NDAs / IP transfer on request
I work with founders, not procurement teams. Here's what some of them have said.
Tell me what you're building. I usually reply within a day — and if it's a good fit, we can scope and start in the same week.
