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Java Backend Engineering | Fintech
A fintech backend project focused on building a secure digital wallet system that supports wallet funding, transfers, transaction tracking and reliable financial record-keeping.
The project explores the core engineering principles behind digital financial services, with particular attention to transaction integrity, data consistency, security and the prevention of duplicate transactions.
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Business banking is already complex. The product shouldn’t make it feel even harder.
That was the thinking behind Bankora.
Payments, invoices, cash flow, financial overview. These are things business teams deal with constantly, yet many banking products still bury simple actions under dense data, long paths, and complicated navigation.
So I started with the workflows, not the screens.
I looked at the tasks people need to complete most often, where unnecessary steps appear, and what information actually needs attention first.
From there, I built the experience around clearer priorities: key actions available quickly, predictable navigation, structured financial data, and modular UI that makes things like pending and overdue invoices easier to understand at a glance.
I also designed an interactive cash flow calculator to help users see where the business may be heading, not just what has already happened.
The goal wasn’t to make financial operations simpler than they really are.
It was to make interacting with them feel simpler.
Less searching. Less cognitive load. More confidence in what to do next.
And it was especially nice to see Bankora later featured by Contra.
Lovely!
🌍 Cross-border payments shouldn't feel complicated. Payvit helps simplify the process for the Haitian diaspora, making it easier to recharge local MonCash and NatCash accounts through familiar international payment options.
I designed the Payvit website from the ground up, creating an intuitive digital experience that makes the service easier to understand, builds customer confidence, and guides visitors through the payment process. From the visual direction to the page structure and user experience, the focus was on making a financial service feel accessible, straightforward, and trustworthy.
A website designed to make international payments feel a little closer to home.
The calculator fits in beautifully.
Your Logistics Team Shouldn't Have to Chase Every Shipment Manually. 🚢
A shipment is delayed. Your customer wants an update. Your operations team is checking carrier portals, copying tracking numbers into spreadsheets, and sending the same status emails repeatedly.
By the time everyone has the right information, the next shipment needs attention.
The problem isn't a lack of effort. It's disconnected logistics operations.
Common challenges:
Shipment updates scattered across multiple carrier systems.
Delayed shipments discovered too late.
Manual customer status emails.
Tracking spreadsheets that quickly become outdated.
Repetitive follow-ups between operations and customer service.
Limited visibility into shipment exceptions.
The solution: An automated logistics operations workflow built with n8n.
I can design an automation that connects carrier tracking APIs, your shipment database, and customer communication channels.
Instead of manually checking every shipment, your team receives structured updates when something actually needs attention.
What the automation handles:
📦 Shipment Tracking — Retrieve updates from supported carrier APIs.
🚨 Exception Detection — Identify delays, customs holds, and missed milestones.
🤖 AI-Assisted Updates — Convert complex tracking events into clear, customer-friendly messages.
📧 Customer Notifications — Send relevant shipment updates automatically.
📊 Operations Visibility — Maintain synchronized shipment records and exception histories.
🔁 Escalation Management — Notify the responsible team when an exception requires action.
The goal: Less repetitive tracking work, faster exception awareness, and more consistent customer communication.
Two ways we can work together:
Option 1: Already have carrier APIs, a TMS, or a defined tracking workflow? Share your requirements, and I'll help design the integration.
Option 2: Not sure which logistics tasks should be automated? We can map your shipment lifecycle and identify the highest-value starting point.
Make your logistics operations easier to manage as shipment volume grows.
Workflow architecture
Scheduled Trigger → Carrier API Request → Normalize Tracking Events → Match Shipment Records → Detect Status Changes → Route Exceptions → AI Summary → Customer Email / Operations Alert → Database Update
Implementation: Authenticate carrier integrations, normalize differing event codes, compare timestamps and event IDs, prevent duplicate alerts, route exceptions by severity, and log delivery failures for retry.
Benefits: Reduced manual tracking, clearer exception ownership, more timely customer updates, and an auditable shipment history.
Result: A centralized shipment monitoring workflow that allows operations teams to focus on resolving exceptions instead of repeatedly checking tracking portals.
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The customs-hold exception is the one I'd find hardest to route, since it needs a different owner than a plain delay. Do you map each exception type to its own team in the escalation step, or is it one shared alert queue?