ProdCraft
00Cover
Book a free build session
ProdCraft · Paris · est. by a 15-year product operator
The senior AI engineer your roadmap is missing. Without the FTE, the agency timeline, or the slide-deck demos. Built with Claude Code. Live in your stack in weeks.
01 Qualified pipeline generated
$1M+
qualified pipeline generated from 48,000+ cold emails/mo at 4%+ reply, one fully-automated outbound system
02 Feature adoption
+45%
feature adoption with −55% latency (p95) · enterprise GenAI/RAG in production
03 Median ship cycle
<30 days
median ship cycle across 5+ live AI products built end-to-end: SaaS · mobile · video · agents
04 Walk-away clause
All code, all credentials — yours. Day one.
Repo in your GitHub. Keys in your accounts. Walk away whenever.
Scroll for the receipts
01 — The ledger
Outbound · US consultancy
$1M+
$1M+ pipeline · 48,000+ emails/mo · 4%+ reply · $200K/yr SDR headcount replaced
“Debanjan caught a silent bug that was killing 83% of our outbound leads before they ever hit an inbox …” Jitendra Kumar, InfoTNT
GenAI · enterprise SaaS · US
+45%
+45% feature adoption · −55% p95 latency
“'Yes, we can do it' — and then he actually ships it.” Ramesh Babar, Zensar Technologies
Concept · 2026 · London · spec work
Page height 17,828 → 1,773 px desktop (10.1×); 36,490 → 2,941 px mobile (12.4×); 4,373 → 5,003 words, nothing dropped; third-party scripts 3 → 0
Open the concept ↗Site build · 2026 · Ireland & UK
195 pages · 165 live roles · 2,797 checks · zero third-party requests
Open the build ↗Concept · 2026 · Paris
6,321 px vs 9,011 live desktop · 5,464 vs 14,528 mobile · functional 29/29 · 20 posts 1080×1350
Open the concept ↗Concept · 2026 · France
59.6 KB HTML+CSS+JS · 33/33 iPhone 13 assertions · 0 console errors · working booking widget
Open the concept ↗Keep scrolling to open the ledger · turn the sheet with the arrows
02 — Who you are
Four kinds of people book a build session. Choose yours and the systems, proof and contact line below follow.
03 — Systems we've shipped
Two are live — open the CV optimizer, play the latest video from our channel. The rest you can stress-test on the intro call.
High-velocity cold-email + GHL CRM + reply automation for a US outbound consultancy.
High-velocity cold-email + GHL CRM + reply automation for a US outbound consultancy.
Stack: Cloudflare Workers + KV + Instantly + GHL. Idempotent sentinel keys, cross-run dedup, per-campaign kill switch, dual-path reply detection. Replaces a 4-SDR team at ~1/10th the cost.
48,000+ emails/mo · 4%+ reply
GenAI
Production GenAI / RAG product for a US enterprise SaaS.
Production GenAI / RAG product for a US enterprise SaaS.
PM-led from problem framing to shipped feature. Multi-LLM routing, eval harness, prompt-cache-aware cost model, per-tenant config. The latency win came from prompt-cache hits + tenant-aware routing.
SaaS live ↗
Live SaaS that re-writes a CV in the target locale + tunes for a pasted job description.
Live SaaS that re-writes a CV in the target locale + tunes for a pasted job description.
Cloudflare Pages + Worker + Gemini backend. Per-field langdetect validators, recruiter-proxy eval, golden-screenshot diff. Eval-first development — ships only when 95% of fields pass.
Video live ↗
Script → voice → Remotion → upload, fully automated. Weekly cadence, near-zero marginal cost.
Script → voice → Remotion → upload, fully automated. Weekly cadence, near-zero marginal cost.
Voice clone via Chatterbox HF Space, visual generation via Gemini, render via Remotion, upload via YouTube Data API. From topic prompt to public video in eight minutes.
Mobile
Expo + EAS Build → TestFlight & Play Store, AI features wired in (transcription, summaries, agents).
Expo + EAS Build → TestFlight & Play Store, AI features wired in (transcription, summaries, agents).
Per-app registry, EAS cloud builds (no Mac required), 5-principle app design framework, 2-pass security audit. Backend tracks: Cloudflare Worker + Modal cron OR Supabase.
Agents
Multi-agent orchestration, MCP servers, internal copilots, anneal audit loops for self-hardening code.
Multi-agent orchestration, MCP servers, internal copilots, anneal audit loops for self-hardening code.
Dynamic workflows, agent teams, sub-agent delegation per task complexity. Anneal: iterative audit loop until convergence. MCP servers for custom integrations.
Decisions
21 classify / pick / score use cases, each with script + directive + offline test + one live run.
21 classify / pick / score use cases, each with script + directive + offline test + one live run.
Router measured: 10 prompts, 6.8 s, $0.00099, all tiers correct · ~600 ms/decision.
Data
2,501 rows → 977 relaunch-ready after bounce root-cause.
2,501 rows → 977 relaunch-ready after bounce root-cause.
2,501 rows → 977 relaunch-ready after bounce root-cause · 1,900-row Bay Area export, 5 duplicates removed, 3 metros · 229 → 195 yoga studios, 34 duplicates removed.
Audit · concept case
The same filter returned 2, then 26, then 49 rows as the logic was normalised.
The same filter returned 2, then 26, then 49 rows as the logic was normalised.
The same filter returned 2, then 26, then 49 rows as the logic was normalised · 68% of profiles untouched for 2+ years · 11-lens panel verdict, 19-page annex. Anonymised concept case.
04 — What we build
Senior operator on every call. No agency overhead. Walk-away day one.
Instantly / SmartLead pipelines, GHL CRM, reply detection, deliverability hardening, sequences that compound.
Voice + chat (Vapi / Retell / Bland), inbound qualification, outbound dialers, calls transcribed straight into your CRM.
Agents, RAG, document workflows, internal copilots, n8n / Modal automations — anything Claude Code can ship in days.
05 — The stack
No theory. These are the tools running the systems above, right now, in production.
06 — How we work
“Will this take six months?”
Claude Code + senior product instincts = 5× the throughput of a typical agency. First working slice in week one.
“Do I get a sales rep, a PM, and a junior dev?”
15 years of product. The same operator writes the prompts, codes the system, deploys it, and watches the metrics. No relay race.
“What if I want to fire you?”
Repo in your GitHub. Keys in your accounts. Walk away whenever. We work to be re-hired, not to be locked in.
07 — Recommendations
“Debanjan caught a silent bug that was killing 83% of our outbound leads before they ever hit an inbox — then rebuilt our entire pipeline around the fix: sourcing, AI personalization, reply classification, CRM routing. Deep technical chops, total transparency, ruthlessly results-focused. I'd hire him again tomorrow.”
“'Yes, we can do it' — and then he actually ships it. The rare operator who's frank about risks the moment he sees them, builds team capability while delivering, and you can hand him any organizational task and trust the outcome.”
“I brought Debanjan in to build a two-sided marketplace with me, and it was one of the smoothest builds I've been part of. He took it from zero — Stripe Connect, the full payment flow, the entire platform — and we cleared $85k in transactions inside the first three months. What stuck with me wasn't just the speed; it's that he sweats the edge cases and ships things that don't break. I'd work with him again in a heartbeat.”
08 — Contact
Book 30 minutes. We'll show you what's possible.
No deck. No sales pitch. Grab 30 minutes and we scope a first build on the call.
Debanjan, Founder, ProdCraft, debanjan@prodcraft.fyi
