ENGINEERING-LED · FIXED-SCOPE ·

We build the parts of your project you didn't know to ask for.

A German shipping company asked us for a maintenance app. We asked how a worker might fake an inspection — and built it so they can't.

Already running something that's breaking? We diagnose and fix that too.

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India clients delivered
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Multivendor marketplace admin panel with product listings, vendor management, and catalogue controls built by XMARTECH
Marketplace · Oman

Multivendor ops at scale

Catalogue · vendors · admin in one spine

verified The Proof

We build for the failure before it happens. Here's what that looks like.

E-Commerce & Multi-Vendor Marketplaces

Unasked failure: payment gateway webhooks arrive out of order when a customer closes the tab mid-transaction. Most shops double-charge or leave the order stuck in "Pending" forever.

How we engineer for it: idempotent state-machine locks that verify the exact transaction signature before anything is fulfilled.

See what we engineer for in your domain arrow_forward

DE Ship Maintenance & Anti-Cheat Inspection App (Germany) Delivered

Offline field application with cryptographic timestamping and anti-cheat mechanics for high-liability maritime safety inspections.

Production metrics:

check_circle 99.98% audit compliance across 40+ commercial vessels

gpp_maybe

Failure Mode Solved Before Launch: Inspectors checking off critical safety valves while sitting in the ship mess hall without physically visiting bilge compartments or pressure gauges.

OM Oman Marketplace (Ultrasooq) Delivered

Cross-border catalogue sourcing and a three-mode AI assistant for an Omani multivendor marketplace — searching live inventory, sourcing externally on demand, and saying so honestly when neither has an answer.

Production metrics:

check_circle 3 AI modes · 9 transaction models · 20 languages · In progress

gpp_maybe

Failure Mode Solved Before Launch: In a thin-catalogue market, a generic assistant invents matches. Ultrasooq needed a defined no-answer path: source on demand, or return guidance without fabricating a product.

AU Scientific Simulation Workbench (Australia) Delivered

High-precision simulation platform for research teams running long-running computational models with reproducible experiment state.

Production metrics:

check_circle 94% reduction in invalid simulation runs across 12 research workflows

gpp_maybe

Failure Mode Solved Before Launch: Batch runs failed silently when parameter sets drifted between environments, invalidating months of comparative analysis.

AE WeView Delivered

WeView asked for an app. XMARTECH found a marketplace with no commerce model underneath it — and prescribed three settlement paths (earned points, pay on delivery, pay at venue) that leave the platform out of every transaction.

Production metrics:

check_circle 12,793 vendors · 8,089 bookings · not one transaction through the platform

gpp_maybe

Failure Mode Solved Before Launch: A live-commerce marketplace with no commerce model underneath it. Nobody asked for a wallet. It was the diagnosis.

SG FS8 Singapore (Gym Bot) Delivered

A WhatsApp AI assistant for a Singapore fitness franchise — built to share a phone number it didn't own, with Mindbody booking and confidence-based human handoff.

Production metrics:

check_circle Same WhatsApp number coexistence · Mindbody booking live · confidence-based human handoff

gpp_maybe

Failure Mode Solved Before Launch: The Business number was already claimed by GROW CRM, Mindbody, and manual staff replies — a bot on a clean number would have broken what was already live.

IN Multi-Industry Delivery Portfolio (India) Delivered

Cross-sector product engineering across logistics, retail, SaaS, health, education, and enterprise operations—with repeatable architecture patterns.

Production metrics:

check_circle 100+ client deliveries across 11 industries with shared resilience standards

gpp_maybe

Failure Mode Solved Before Launch: Fragmented vendor handoffs created inconsistent quality and no shared ownership of production reliability.

How We Build

Four steps. Same discipline, every project.

forum
01

Talk

A dev shop takes your spec and starts coding. We start by asking what breaks it. You know your business better than any spec captures — a shipping operator knows exactly how a worker cuts a corner. We get that out of you in conversation, not a form.

Founder-engineered safeguard arrow_forward
search_insights
02

See what will break

Every domain has failure modes nobody puts in the brief: race conditions, rate limits, the edge case that only shows up at scale. We find them before we write a feature.

Founder-engineered safeguard arrow_forward
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03

Build it defensively

We assume what can break, will — and build against it first, not as a patch after launch. This is why the maritime app can't be faked, why the AI on a client's WhatsApp won't go off-script, why things we build take real load instead of falling over the first time they're tested.

Founder-engineered safeguard arrow_forward
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04

It holds, and it grows

A foundation built to withstand failure is a foundation built to be added to. Once it's proven, that's when we connect it to the rest of your systems — never before trust is earned.

Founder-engineered safeguard arrow_forward

route direct access → your real domain knowledge → we see what will break → we build for it before it happens → it holds, and it grows

The Record

Built across five countries. Trusted by 100+.

Germany, Oman, Australia, Dubai, Singapore — and over 100 businesses across 11 industries in India. Maritime to e-commerce to real-money platforms. Different worlds, same discipline: build for what breaks it, before it does.

🇩🇪 Germany
🇴🇲 Oman
🇦🇺 Australia
🇦🇪 Dubai
🇸🇬 Singapore

100+

Clients delivered

5

Countries

11

Industries

2018

Since

memory Engineering Surface

The stack behind resilient products.

From websites and mobile apps to automation pipelines and conversational systems — we select proven tools for reliability, speed, and long-term ownership.

language Websites deployed_code Applications smartphone Mobile Apps precision_manufacturing Automation smart_toy Chatbots & AI
P PHP Backend
L Laravel Backend
C CodeIgniter Backend
N Node.js Runtime
N NestJS API
E Express API
N Next.js Web
R React Frontend
V Vue.js Frontend
T TypeScript Language
J JavaScript Language
H HTML5 Web
C CSS3 Web
TC Tailwind CSS UI
W WordPress CMS
G GraphQL API
R REST API
W WebSockets Realtime
M MySQL Database
P PostgreSQL Database
M MongoDB Database
R Redis Cache
E Elasticsearch Search
P Prisma ORM
E Eloquent ORM
JO JWT / OAuth Auth
F Flutter Mobile
RN React Native Mobile
D Dart Mobile
K Kotlin Android
S Swift iOS
P Python Automation
D Django Backend
F FastAPI API
C Celery Jobs
R RabbitMQ Queue
N n8n Automation
O OpenAI AI
L LangChain AI
R Rasa Chatbot
D Dialogflow Chatbot
T Twilio Messaging
W Webhooks Integration
D Docker Containers
K Kubernetes Orchestration
N Nginx Proxy
L Linux OS
A AWS Cloud
G GCP Cloud
A Azure Cloud
G Git VCS
GA GitHub Actions CI/CD
F Firebase Backend
S Supabase Backend
verified Production-proven tooling lock_open Open standards · no lock-in architecture Chosen for the failure mode
What you get

Five things you're afraid of getting wrong.

You arrive wanting something built. We're the ones who build it so it holds. Each fear, answered with proof — never with an adjective.

It won't break.

Engineered for the real world, not just the demo room.

It'll grow with me.

Add features later without tearing down the foundation. Built on open standards you control.

It'll look and feel right.

Fast, smooth, designed with precision. The craft shows in every interaction and state transition.

They'll think about what I didn't.

The safeguard you didn't ask for. The failure you hadn't imagined. We build it in anyway.

They'll still be here.

After-build support from the exact people who built it. Not a vanished vendor.

Tell us what you're building — or what's breaking.

Not a sales call. A conversation with the person who'd architect it — where we find the parts you didn't know to ask for.

Find us

Visit our Office.

Xmartech -Web Development solutions. Drop by for an in-person architecture review, or route straight to the calendar.

Studio address

Helabotola More, Noapara, Pioneer Park, Barasat
Kolkata, West Bengal 700124, India

22.7245° N · 88.4791° E
  • Monday – Friday 09:00 – 19:00
  • Saturday 10:00 – 15:00
  • Sunday Closed
Live map

Xmartech HQ

Pioneer Park · Barasat, Kolkata