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PUBLIC ENGINEERING LIBRARY · 2026 CATALOGUE

Engineering blueprints, open tools, and production field notes.

Real code, architecture teardowns, and lessons from building scalable web platforms, offline-first ERPs, AI compilers, and fintech transaction ledgers.

FEATURED BLUEPRINT6 min read

Progressive Web Apps: Transforming Traditional ERP Systems into Offline-Capable Frontends

Enterprise ERP systems often collapse the moment internet connectivity drops in a concrete warehouse. Here is how we build progressive web apps with offline persistence, background mutation queues, and automatic conflict resolution.

Read BlueprintBy Timilehin Aliyu (Software Engineer) · August 20, 2026
Key Topics
PWAOFFLINE FIRSTSERVICE WORKERINDEXEDDBFRONTENDREACT
✓ Includes Code Playground & Markdown Copy
Backend & AWS7 min read

Handling SQLite Databases in Serverless AWS Lambda Functions Using Zappa

Running Django on AWS Lambda with Zappa is cost-effective, but Lambda's ephemeral storage presents unique challenges for SQLite. Here is how we package and sync SQLite snapshots without provisioning expensive RDS clusters for low-concurrency internal tools.

AWSLAMBDADJANGOPYTHON
Timilehin Aliyu· August 12, 2026
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React & Architecture5 min read

Polling in React: When Smart Short-Polling Beats WebSocket Complexity

Engineers often reach for WebSockets for simple status indicators, introducing complex connection keep-alives and load balancer state. Here is how we build self-healing, tab-aware polling hooks in React.

REACTJAVASCRIPTFRONTENDPERFORMANCE
Timilehin Aliyu· July 30, 2026
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AI & Compilers9 min read

Building Djuix.io: Compiling Natural Language to Validated Django APIs

Djuix.io was built to eliminate repetitive boilerplate in backend development. Here is how our deterministic compiler translates natural-language specs into production-grade Django models, serializers, and OpenAPI schemas.

DJUIXDJANGOPYTHONAI
Timilehin Aliyu· June 25, 2026
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Research & Insights12 min read

Why 73% of Nigerian Fintech Products Fail at Reconciliation

After auditing 40+ fintech systems in Nigeria, we found the same pattern: the ledger works in dev, breaks in prod. Here's what actually fails at scale and the 3 architectural patterns that fix it.

FINTECHRECONCILIATIONLEDGERCBN
Emicraft Engineering Team· August 15, 2026
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Research & Insights9 min read

The 'Spreadsheet Tax' Costing Mid-Size Companies ₦2.4M/Month

Across 15 Nigerian companies we've worked with, the average 'spreadsheet tax' — the cost of manual data entry, duplicate tracking, and version conflicts — is ₦2.4M per month. The fix isn't another SaaS subscription.

OPERATIONSDATACOSTNIGERIA
Emicraft Engineering Team· July 20, 2026
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Research & Insights15 min read

Event-Driven Ledgers vs. CRUD: What Actually Survives a CBN Audit

CRUD ledgers work until the CBN asks for a 6-month transaction trail with immutable timestamps. Here's the event-sourcing pattern we use in production, with real code from a system handling 2M+ daily transactions.

FINTECHEVENT SOURCINGCBNAUDIT
Emicraft Engineering Team· June 18, 2026
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