AI & automation
A RAG knowledge assistant with LangGraph and pgvector
A reference architecture for searching internal documentation, retrieving permission-aware context, and returning answers with source links.
LangGraphpgvectorFastAPI
Engineering journal
Use Cases
Ideas into systems. Explore how AI, analytics, and infrastructure could come together around a product — from the first event to the operational details.
Illustrative scenarios with proposed stacks and practical implementation notes.
AI & automation
AI support triage with n8n and human review
How a support workflow could classify incoming tickets, prepare a draft, and keep external actions behind a human approval step.
n8nPostgreSQLHelpdesk API
AI & automation
Subscription churn scoring with scikit-learn and MLflow
A practical ML reference scenario covering a time-based dataset, leakage checks, model versioning, and a cautious scoring rollout.
scikit-learnMLflowFastAPI
Growth & analytics
Mobile attribution for a Flutter subscription app
An illustrative AppsFlyer and Amplitude setup connecting campaign acquisition, deep links, and subscription events through a shared event plan.
FlutterAppsFlyerAmplitude
Growth & analytics
A reliable product analytics pipeline with Amplitude
A reference tracking plan for activation funnels, stable event contracts, server-side delivery, and analytics quality checks.
TypeScriptPostgreSQLAmplitude
Growth & analytics
Keitaro integration with reliable server-to-server postbacks
A reference conversion pipeline covering click IDs, status mapping, duplicate callbacks, retries, and reconciliation with Keitaro.
KeitaroNode.jsPostgreSQL
Growth & analytics
An iGaming platform event integration built for replay
A sandbox integration pattern for validating provider callbacks, normalising event contracts, and handling duplicate or out-of-order delivery.
TypeScriptPostgreSQLRedis
Infrastructure & connectivity
A static Next.js product site on S3 and CloudFront
A reference deployment for a product website with a private S3 origin, CloudFront HTTPS, correct static routes, and reversible content releases.
Next.jsAWS CDKS3 + CloudFront
Infrastructure & connectivity
Designing a mobile VPN connection lifecycle with WireGuard
A reference mobile VPN architecture covering device enrolment, key handling, tunnel state, network changes, and revocation.
WireGuardKotlin + SwiftGo