11+ years of shipping AI chatbots, lead-gen engines and autonomous marketing agents. Here's what it looks like in production — and the metrics to prove it.
Currently accepting 2 new clients for Q3 2026
WHAT I BUILD
Every engagement plugs into one of these. Pick the one that matches the bottleneck — I'll scope the rest in the first 15-minute call.
GPT-4o, Claude and RAG-powered assistants that handle 60–80% of inbound conversations. Trained on your docs, integrated with your stack, fully owned by you.
Intent-data enrichment, multi-channel outbound (email + LinkedIn + WhatsApp), and reply-rate optimization. Built on Apollo, Instantly, n8n and Make.
End-to-end systems on n8n, Make and Zapier. Reporting, lead routing, content distribution, retention flows — autonomous agents that run while you sleep.
FEATURED CASE STUDIES
Three Upwork engagements, anonymized where clients asked for it. Numbers are real.
Built a GPT-4o + RAG support assistant for a Series A SaaS. Integrated with Intercom, Zendesk and the client's Notion knowledge base. Full content ownership transferred to the client.
Designed a multi-channel outbound engine for a B2B consultancy. Apollo enrichment → Instantly sequences → n8n reply handler. Booked 23 discovery calls in week one.
Replaced a manual spreadsheet workflow for a DTC brand. n8n orchestrator pulling from Shopify, Meta Ads, Klaviyo → unified Looker dashboard. Weekly client report now self-emails.
ABOUT
I'm Biswajit — a marketing operations leader with 11+ years building revenue pipelines for B2B SaaS, e-commerce, and agencies across the US, UK, and APAC.
My edge: I write the code, build the automations, and configure the tools. No middlemen, no offshore layers, no "let me check with the team." You get a builder, not a coordinator.
HOW I WORK
Not a process deck. The way I actually run every project, from a $2k chatbot to a $25k automation overhaul.
Code, credentials, prompts, data, automations — all transferred to you on the final milestone. No vendor lock-in, no proprietary black boxes.
One number, written milestones, no hourly ambiguity. You always know what you're paying for and when it ships.
I work in 1-week sprints and send a Loom walkthrough every Friday. You see progress, not promises.
After handoff, you get 30 days of free bug-fix support. Anything I built that breaks, I fix — no questions, no invoices.
TOOLS I SHIP WITH
The exact tools I reach for on every engagement. No mystery SaaS, no proprietary lock-in.
PROCESS
No surprises. Every milestone is a fixed deliverable, scoped before the contract starts.
15 minutes on Upwork. We map the bottleneck, the stack, and what 'done' looks like. You get a clear yes/no on fit.
Within 24h you get a written scope, milestones, and one number. No hourly ambiguity, no scope creep.
I work in 1-week sprints with a Loom demo every Friday. You see progress, not promises.
Code, credentials, docs, Loom walkthroughs — all transferred. You own everything. 30 days of free bug-fix support.
FAQ
Mostly AI chatbots, lead-gen systems, and end-to-end marketing automation. I work with B2B SaaS, e-commerce, agencies and consultancies. Engagement size: $2k–$25k fixed-price, or $75–$125/hr for ongoing retainers.
A landing chatbot with RAG ships in 5–7 days. A multi-channel lead-gen engine in 2–3 weeks. A full marketing-automation overhaul is usually 4–6 weeks. All milestones and deadlines are baked into the Upwork contract.
Always. 100% IP and data ownership transfers to you on the final milestone. No vendor lock-in, no proprietary black boxes. You'll get the repo, credentials, and a Loom walkthrough.
Book a 30-minute async audit — I review your current setup, send a Loom with three concrete improvements, and a written action plan. Starts at $250. Great way to test the waters before a full engagement.
Yes. Send your NDA as the first message on Upwork, I'll e-sign within 24 hours, then we can get into specifics. I've signed NDAs with Series A startups, public companies, and a couple of FAANG-adjacent teams.
READY WHEN YOU ARE
Send a quick brief on Upwork — I'll respond within 1 hour during business hours (IST) and we can scope your engagement on a 15-minute call.
Replies usually within 1 hour · NDA-friendly · 100% IP transfer on delivery