Case Studies

Outcomes we can stand behind.

Deep dives into five engagements — the problems, the architecture, and the numbers that matter.

NEXT.JS · REAL-TIME SYNC · BILL SPLITTING
Fintech · Personal Finance

SplitChey

Expense Tracker & Group Finance App

Challenge

SplitChey needed a production-ready expense tracking and bill splitting platform that could handle real-time group finances, multi-currency support, and seamless settlement flows. The MVP needed to launch fast with a clean, intuitive UI that made splitting bills feel effortless — not like doing accounting homework.

Solution

We built SplitChey as a full-stack Next.js application with real-time balance tracking, intelligent debt simplification, and group management. The platform supports flexible split types (equal, percentage, shares, itemized), multi-currency conversion, and automated settlement optimization that minimizes the number of transfers needed to clear all debts. Receipt scanning and expense categorization were added via AI integration.

Before → After

Before JH Global Tech
Expense trackingManual spreadsheets
Bill splittingGroup chat math
SettlementVenmo requests, guesswork
Currency handlingNone
After JH Global Tech
Expense trackingReal-time dashboard
Bill splittingOne-tap flexible splits
SettlementOptimized minimum transfers
Currency handlingAuto-conversion, 100+ currencies
< 2s
Expense add latency
100+
Currencies supported
0
Awkward follow-ups
Free
Core features

Architecture

  • Next.js 15 with App Router and Server Components
  • Supabase for auth, database, and real-time subscriptions
  • PostgreSQL with row-level security for multi-tenant data
  • AI-powered receipt scanning and expense categorization
  • Debt simplification algorithm for optimal settlements
  • Multi-currency support with live exchange rates
Tech Stack
Next.jsSupabasePostgreSQLAI Receipt ScannerTypeScriptTailwind CSS
NEXT.JS · GEMINI · PLAYWRIGHT · CI/CD
Developer Tools · QA Automation

TestFlow

AI Testing Automation Workspace

Challenge

TestFlow set out to eliminate the most time-consuming part of the development pipeline: writing and maintaining test cases. Existing testing tools required manual script writing, disconnected CI/CD pipelines, and no centralized visibility into test execution. Teams were shipping code with low confidence and expensive post-deployment bugs.

Solution

We built TestFlow as a repository-aware AI testing automation platform that connects directly to GitHub repos, analyzes codebases, and generates comprehensive test cases using Google Gemini. The platform auto-generates Playwright scripts, executes browser tests in Browserless cloud environments, and provides live execution tracking with detailed logs, screenshots, and trace artifacts — all from a single dashboard.

Before → After

Before JH Global Tech
Test writingManual, hours per feature
Test executionLocal, inconsistent envs
CI/CD integrationDisconnected pipelines
Test visibilityScattered logs, no dashboard
After JH Global Tech
Test writingAI-generated in minutes
Test executionCloud-based, reproducible
CI/CD integrationGitHub-native, automated
Test visibilityLive dashboard with traces
90%
Test writing time saved
Repo-aware
Contextual test generation
Live
Execution tracking
Zero
Manual script authoring

Architecture

  • Next.js 16 with React 19 and TypeScript
  • Google Gemini for AI-powered test case generation
  • Playwright for automated browser testing
  • Browserless cloud for scalable test execution
  • Clerk for authentication and user management
  • Neon PostgreSQL with Drizzle ORM
  • Encrypted token storage for secure repo access
Tech Stack
Next.js 16React 19GeminiPlaywrightBrowserlessClerkNeon PostgreSQLDrizzle ORM
JH Engine · ML · REAL-TIME AUTOMATION
Logistics & Supply Chain

Aura Logistics

AI-Powered Fulfillment

Challenge

Aura Logistics operated three warehouses across the region with entirely manual processes. A four-person team spent 60% of their labor hours on physical inventory counts, cycle tracking, and order picking workflows that hadn't changed in a decade. The fulfillment cycle averaged 12 hours per order, and stockout rates hovered around 15% — burning margin and eroding customer trust.

Solution

We deployed a self-hosted JH Engine cluster with custom workflow nodes built specifically for Aura's warehouse topology. Real-time inventory synchronization now runs across all three facilities via WebSocket-fed dashboards. A custom ML demand forecasting model — trained on 18 months of historical order data — predicts stock depletion 72 hours in advance. Exception routing automatically escalates anomalies to the operations lead.

Before → After

Before JH Global Tech
Team4-person manual crew
Fulfillment cycle12 hours per order
Stockout rate15%
Inventory checksManual, twice daily
After JH Global Tech
Team1 ops lead + automation
Fulfillment cycle2 hours per order
Stockout rate2%
Inventory checksReal-time, continuous
+42%
Ops throughput increase
-60%
Manual labor reduction
3
Warehouses connected
3.2s
Per-order processing

Architecture

  • Self-hosted JH Engine with 12 custom nodes
  • PostgreSQL for inventory state management
  • GPT-4o for natural-language exception summaries
  • Custom ML model for demand forecasting
  • Shopify API bidirectional sync
Tech Stack
JH EnginePostgreSQLGPT-4oCustom ML ModelShopify API
REACT NATIVE · SOC 2 · COMPLIANCE
Financial Technology

Nexum Fintech

Cross-Border Payments App

Challenge

A cross-border payments startup needed a SOC 2 compliant mobile application — iOS and Android — within 90 days to hit their Series B fundraising timeline. Their legacy PHP backend suffered from 800ms p95 latency, had zero compliance framework, and relied on manual KYC verification that took 48 hours per user. No design system existed; every screen was bespoke.

Solution

We shipped a React Native application with a hardened Node.js backend, designed for sub-200ms p95 latency from day one. The architecture enforced SOC 2 alignment with encrypted data handling, audit logging, and automated KYC via document verification APIs. A shared design system — built in parallel with the app — gave their team a component library that scaled into Series B product iteration.

Before → After

Before JH Global Tech
BackendLegacy PHP monolith
Latency (p95)800ms
ComplianceNone
KYC processManual, 48-hour turnaround
After JH Global Tech
BackendNode.js + React Native
Latency (p95)180ms
ComplianceSOC 2 aligned
KYC processAutomated, minutes
2.4M
Active tokens
99.97%
Uptime SLA
90
Days to launch
Series B
Successfully secured

Architecture

  • React Native with shared iOS/Android codebase
  • Node.js backend on AWS ECS with auto-scaling
  • PostgreSQL with row-level security
  • Stripe Connect for cross-border settlement
  • Automated KYC with document verification API
Tech Stack
React NativeNode.jsPostgreSQLStripeAWSSOC 2
JH Engine · AI FRAUD · ORDER AUTOMATION
Retail & E-commerce

GlobalMart

E-commerce AI Pipeline

Challenge

GlobalMart processed 50,000 daily orders through a Shopify storefront, but fraud detection was entirely manual — a three-person review team manually flagging suspicious transactions. The chargeback rate sat at 8%, costing the business millions annually. First-response time for customer inquiries averaged 4 hours, and the team had no automated routing or escalation paths.

Solution

We built a JH Engine order automation pipeline with AI-powered fraud scoring at the edge. Every incoming order is evaluated by a GPT-4o-backed model trained on historical chargeback patterns — scoring risk in under 200ms before payment settlement. Automated routing sends flagged orders to a review queue while clearing low-risk transactions instantly. Real-time Slack notifications keep the ops team in the loop without manual monitoring.

Before → After

Before JH Global Tech
Fraud detectionManual, 3-person team
Chargeback rate8%
First response time4 hours
Order routingManual triage
After JH Global Tech
Fraud detectionAI scoring, 0.02% false positive
Chargeback rate0.3%
First response time12 seconds
Order routingFully automated
-96%
Chargeback reduction
50K
Orders/day automated
$2.1M
Saved annually
12s
Avg response time

Architecture

  • JH Engine with order ingestion pipeline
  • GPT-4o for fraud scoring and anomaly detection
  • Stripe for payment processing and dispute management
  • Shopify API for order and inventory sync
  • Slack integration for real-time alerts
  • PostgreSQL for audit trails and analytics
Tech Stack
JH EngineGPT-4oStripeShopifySlackPostgreSQL

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