Systems Architecture
Case studies in backend architecture, domain modeling, product workflows, and evidence-driven decision systems.
Medical Case Tracker
FEATUREDA clinic operations platform for patient records, appointment workflows, medical cases, images, role-based access, audit events, and patient portal account linking.
Problem:Clinics need to coordinate doctors, front desk staff, administrators, and patients without exposing private records to the wrong role or losing the history behind case updates.
Solution:Medical Case Tracker models clinic work as role-aware workflows for patients, appointments, cases, images, audit events, verified patient portal linking, and administrative backup controls.
Spring BootAngularRBACHealthcare WorkflowsAudit Trails
ColdTrack Claims Intelligence Platform
FEATUREDA supply-chain claims intelligence platform that turns rejected cold-chain shipments into traceable evidence, deterministic diagnosis, and claim workflows.
Problem:Shipment rejections create costly disputes because custody, sensor observations, SLA rules, inspection results, and financial impact are scattered across different systems.
Solution:ColdTrack models the rejection workflow as bounded contexts for custody, contracts, observations, data quality, diagnosis, evidence, and claims so each verdict can be reproduced from explicit facts.
Domain Driven DesignModular MonolithSupply ChainEvidence ModelingSpring Boot
Wasilio COD Operations & Risk Platform
FEATUREDA multi-tenant COD platform for Moroccan ecommerce merchants that manages confirmation and courier workflows while building toward order risk scoring and fraud detection.
Problem:Moroccan COD merchants lose money when risky orders are shipped by default, then fail through refusal, unreachable customers, fake intent, bad addresses, or suspicious repeat patterns.
Solution:Wasilio centralizes confirmation, courier, and failure workflows, then turns order outcomes into signals for risk scoring, fraud detection, and smarter pre-shipment decisions.
Domain Driven DesignRisk ScoringFraud DetectionOrder ManagementSpring Boot