codegang0077@gmail.com

20 systems live · BR · AU · IN · US · EU

We build the software
that runs the company

A software engineering company shipping production AI, multi-tenant platforms, and mobile apps. 500+ projects delivered for 100+ clients, most under NDA.

CodeGang is a software engineering companythat ships systems companies run on

Request path · Verse AI

7 layers
  1. Edge · CDNCloudFront
  2. API gatewayALB + NestJS
  3. Auth & tenancyJWT + RLS
  4. OrchestratorNestJS
  5. RetrievalQdrant
  6. Model gatewayBedrock · OpenAI
  7. DataPostgres · S3
every layer written, deployed and maintained by usin production
Verse AI: request path
Acme Logistics · Assistant7-layer AWS stack
What is our notice period for a fixed-term contractor?

Retrieved from 4 of 1,284 chunks

  • policy-handbook-2026.pdfp. 420.94
  • onboarding-sop.docx§ 3.10.89
  • contract-template.pdfcl. 70.81
  • finance-faq.mdQ140.76
Thirty days, per clause 7 of the contract template, with the handbook exception for probation.
Ask about your documents…
Verse AI: assistant with retrieval trace

Engineers, not account managers: The person in your first call writes the code. There is no sales layer and no hand-off to a delivery team you have never met.

Production or nothing: We measure ourselves in systems that are live and maintained, not in prototypes. Most of what we have shipped is still under our maintenance.

Yours to keep: Your repository, your cloud account, your data. We build so the system survives us: documented, tested, and handed over whole.

Bring us the system you need built, and we will tell you what it actually takes, before you commit to anything.

Talk to an engineer

What we build

Five systems,five different problems

Each of these is live, maintained by us, and open to a technical reference call.
01

AI & GenAI engineering

Private AI over your own documents,with the retrieval trace attached

Verse AI gives an enterprise a private assistant over its own files. Every answer arrives with the chunks it came from, and every chunk is scoped to one tenant, so a buyer can audit the answer instead of trusting it.

liveLive for MooveHub in São PauloOpen it live

Acme Logistics · Assistant7-layer AWS stack
What is our notice period for a fixed-term contractor?

Retrieved from 4 of 1,284 chunks

  • policy-handbook-2026.pdfp. 420.94
  • onboarding-sop.docx§ 3.10.89
  • contract-template.pdfcl. 70.81
  • finance-faq.mdQ140.76
Thirty days, per clause 7 of the contract template, with the handbook exception for probation.
Ask about your documents…
Verse AI: assistant with retrieval trace
02

Enterprise systems

Six role-based portals,one schema underneath

Pinnacle HMS runs a working hospital. Reception, OPD, diagnostics, pharmacy, billing and admin each get their own portal, but a patient episode is one record moving across 39 tables and 57 relationships with an audit trail behind it.

liveLive in a hospital in Kolkata

Patient episode · MRN 04417

one schema · 39 tables · 57 relationships

role-based access
  1. Reception

    Register · assign MRN

    6 tables

  2. OPD

    Consult · prescribe

    8 tables

  3. Diagnostics

    Order · report

    7 tables

  4. Pharmacy

    Dispense · deduct stock

    6 tables

  5. Billing

    Invoice · settle wallet

    7 tables

  6. Admin

    Audit · roles · reports

    5 tables

hand-off 0 of 6

Pinnacle HMS: one patient episode across six portals
03

Applied machine learning

Deep learning inside the ERP,not inside a notebook

ARM Tech runs purchasing, fleet and finance for a cement trader. Five deep-learning modules sit on the same pipeline as the transactional system, so a forecast is something the buyer acts on in the app rather than a slide in a review.

liveLive for a trading business in KolkataOpen it live

Demand forecast · next 6 periods

LSTM
actualforecast
  • Demand forecastLSTM
  • Anomaly detectionIsolationForest
  • Invoice OCRCRNN
  • Credit riskGBM
  • Route costRegression
ARM Tech ERP, LSTM demand forecast
04

Mobile app development

Mobile built for a real audience,shipped to a real store

eMedici teaches medical students across Australia. Offline-first sync, store-ready release engineering, and a question engine that has to stay correct: because the people using it are being examined on it.

liveeMedici · Play Store · 10K+ installs, 4.9★View on Play Store

9:41
Cardiology · Q77 / 20

A 34-year-old presents with sharp pleuritic chest pain relieved by leaning forward. ECG shows diffuse ST elevation with PR depression.

  • AAcute pericarditis
  • BSTEMI, anterior
  • CBenign early repolarisation
  • DPulmonary embolism

Why: PR depression with diffuse ST elevation distinguishes pericarditis from a territorial infarct.

eMedici · Play Store10K+ installs4.9
eMedici: question engine
05

SaaS product development

A product that earns its keepin the first sixty seconds

AI Resume Builder turns a pasted job description into an ATS-optimised resume. The whole product is one loop: paste, score, rewrite, download, and the score has to move for a visible, explainable reason.

liveLive at nailhiring.comOpen it live

ATS match report

under 60s
0

Before 54 after 0

Rewritten against the pasted job description: bullets re-scoped, missing keywords surfaced, formatting flattened for the parser.

Keyword coverage

  • Kubernetes
  • Terraform
  • CI/CD
  • Go
  • observability
  • PostgreSQL

+4 added · 2 already present

AI Resume Builder, ATS match report

How we work

Four stages,and you can leave after any of them

No lock-in, no phased invoice you cannot exit. If the scope says the system is wrong, we would rather tell you at stage one.
  1. Scope

    We work out what the system has to do and what shipping means. You leave with a written scope you could hand to anyone, including someone who is not us.

  2. Build

    Short cycles against that scope, in your repository from day one. You see the system running before it is finished, not a status report about it.

  3. Ship

    Deployment, environments, CI/CD and the release itself. Live means a real user can reach it in your cloud account, not a demo on ours.

  4. Stay

    Maintenance and roadmap. Most of the systems on this page are still under active maintenance by the same engineers who built them.

Everything a company needs built,under one roof

AI platforms, SaaS products, mobile apps, ERP suites, cloud infrastructure, shipped by the same team, so nothing gets lost between vendors.

Capabilities: healthcare, ragplatform, multitenant, flutterapps, forecasting, hospitalos, proptech, devopscicd, erpsuites, recruiting.

One team, one contract: The AI work and the ERP work and the mobile work are the same people, so integration is not a project of its own.

Every region supported: Systems live across Brazil, Australia, India, the USA and Europe, each one supported in its own timezone rather than in ours.

NDA by default: Most of our work is under one. This site shows regions, statuses and stacks rather than client internals: deliberately.

Live board

Every system we have shipped, and its real status

All case studies
SystemSectorRegionStackStatus
Verse AI

Private ChatGPT for the enterprise. Multi-tenant RAG on a 7-layer AWS stack.

Enterprise SaaSSão Paulo · BRNestJSPostgresQdrantlive
eMedici

Australia's leading medical-education Android app. 10K+ installs.

Healthcare · MobileAdelaide · AUAndroidFlutterlive
ARM Tech ERP

3-module ERP with five deep-learning modules on one pipeline.

Trade & LogisticsKolkata · INNext.jsSupabaseFastAPIlive
AI Resume Builder

Paste a job description, get an ATS-optimized resume back in seconds.

Early-stage SaaSNew York · USNext.jsFastAPIOpenAIlive
NestFlow

Property management for landlords. Containerized microservices.

PropTechBerlin · EUMicroservicesMongoDBRedisbuilding
Pinnacle HMS

The operating system for a working hospital. Six role-based portals.

HealthcareKolkata · INREST APIMySQL39 tableslive
Student Insights Suite

Four-campus school analytics: enrolment, attendance and NCCD compliance in one Power BI suite.

Business AnalyticsMelbourne · AUPower BIPower QueryDAXlive
Sales Performance Report

One interactive Power BI report, three swappable KPI panels, no more spreadsheet reconciling.

Business AnalyticsChicago · USPower BIDAXPower Querylive
Call Centre Dashboard

A Salesforce-native call centre dashboard: service level and agent performance, live.

Business AnalyticsDenver · USPower BISalesforceDAXlive
Local Shops Analytics

Azure Data Factory ETL feeding a Power BI suite for a multi-state US retail network.

Business AnalyticsSeattle · USAzure Data FactoryAzure SQL DatabasePower BIlive
Navan

Contract backend engineer on Navan's FastAPI & Node.js services powering live travel and expense booking.

Corporate Travel & ExpensePalo Alto · USFastAPINode.jsPostgreSQLlive
Six Spa

A private sanctuary for recovery and silence: booking site for a UK Midlands contrast-therapy spa.

Wellness & HospitalityBirmingham · EUNext.jsTailwind CSSFramer Motionlive
BuyTicket

Backend build on Bubble.io for Brazil's largest secondary ticket marketplace: database, workflows, and organizer onboarding behind buying, selling, and listing tickets.

Marketplace / TicketingSão Paulo · BRBubble.iolive
CommonFloor

Backend engineering team member since 2020: search and filtering, listings/agent CRM, and platform infrastructure behind one of India's largest real estate marketplaces.

Real Estate / MarketplaceBangalore · INSearch & FilteringListings & Agent CRMPlatform APIslive
Clear Investment Group

WordPress site for a 22-year multifamily real estate investment firm: track record, fund offerings, and a gated investor portal built to convert investors, advisors, and sellers.

Real Estate InvestmentChicago · USWordPresslive
GoHighLevel Chatbot & Automation

Multi-channel chatbot and automation system inside GoHighLevel, SMS, email, web chat and social lead capture, qualification, and booking across a 4-location setup.

AI Automation / CRMDallas · USGoHighLevelChatbotMeta APIlive
Epicor Kinetic Implementation

Epicor Kinetic implementation partner for manufacturing clients across several fields, ERP configuration, MES/IoT integration, data migration, and BI built around how each plant actually runs.

Manufacturing / ERP ImplementationAustin · USEpicor KineticMES/IoT IntegrationBI & Reportinglive
Pingo AI

Contract engineering across mobile, backend, and conversational AI for Pingo AI, a YC-backed language-learning app used by 6M+ learners.

Consumer AI / EdTechSan Francisco · USMobile App DevelopmentConversational AI IntegrationFeature Engineeringlive
Opennote

Contract engineering across the frontend and AI tutor integration for Opennote, a YC-backed AI study platform used by 50,000+ students.

Consumer AI / EdTechSan Francisco · USFrontend DevelopmentAI Tutor IntegrationFeature Engineeringlive
Blaze.ai

Contract engineering on the content generation engine and dashboard for Blaze.ai, a YC-backed all-in-one AI marketing platform.

MarTech / AI MarketingSan Francisco · USContent Generation EngineDashboard DevelopmentFeature Engineeringlive
Rerise

DTC site for Core100, a 13-active mitochondrial health protocol: root-cause science and a 90-day milestone timeline built to justify a premium subscription purchase.

Health & Longevity / DTCLadera Ranch · USShopifyKlaviyolive

By the numbers

0+

Projects delivered

over the years · most under NDA

0+

Clients served

BR · AU · IN · US · EU

0

Systems live now

in production, maintained by us

0

Account managers

you talk to the engineer building it

Lifetime figures are asserted by the founders and include years of NDA-covered client work that cannot be itemised publicly. The systems and regions counts are computed from the case studies on this site: you can check them.

Questions

The thingseveryone asks first

If yours is not here, ask an engineer directly: you will get an answer from the person who would build it.

Ask a question
Who actually writes the code?
The engineers on the studio page. There is no sales layer and no hand-off: the engineer in the meeting is the one writing the code.
What do you build?
Production AI systems (RAG, multi-LLM gateways), multi-tenant SaaS platforms, mobile apps, ERP suites with applied deep learning, and healthcare systems. Every one of those maps to a system we have shipped: see the case studies.
How does an engagement run?
We scope the system with you, agree on what shipping means, build it, deploy it, and stay on for maintenance and roadmap. Most of our live systems are still under active maintenance by us.
Do you work across time zones?
Yes. Our clients are in Brazil, Australia, India, the USA and Europe. Brazil, Australia, India, the USA and Europe, and every system stays supported in its own timezone.
Can you work under NDA?
Yes, and most of our client work is under one. That is why this site shows regions, statuses and stacks rather than client internals.

Bring us the system your company runs on

Tell us what it has to do. You will get a straight answer about what it takes to build, from the engineer who would build it: before you commit to anything.

codegang0077@gmail.com20 systems live · BR · AU · IN · US · EU · NDA by default

Senior engineers. 20 systems that stay up.

See the work →