Things I've
shipped.
The systems below have been in production for months or years — serving real users, real money, and real consequences when something breaks.
Custom Identity Provider & OAuth2/OIDC Server
A fully featured, standards-compliant IdP with OIDC Authorization Code + PKCE flow, RS256-signed ID tokens, a Discovery endpoint, JWKS endpoint, and custom claims. Back-channel logout broadcasts signed JWT tokens to all registered relying parties via queued jobs with exponential backoff. Redis-backed real-time session revocation cascades instantly across tenant, product, and user levels. MVP engineered in a 6-day AI-assisted sprint; subjected to a 2-month code and architecture review before production rollout — cutting access management overhead by 80%. Covered by 70 feature tests and a full OpenAPI spec.
Enterprise Double-Entry Accounting System
An IFRS-compliant, multi-tenant double-entry accounting engine with real-time dynamic Balance Sheets, Income Statements, Trial Balances, and Cash Flow statements. Multi-currency architecture with real-time Forex translation and localized accounting schemes. Automated aging schedule logic for receivables and payables across custom time frames. Complete MVP delivered in a 2-week AI-assisted sprint, then hardened through a 2-month architecture and security review. Secured GH₵ 100,000 in revenue within its first month of deployment.
Flow Ledger — Payment Request & Approval Workflow
A multi-tenant payment request and configurable approval workflow platform covering the full request lifecycle: submission, multi-level approvals, disbursements, retirements, and cashbook reconciliation. RBAC with granular permissions via Spatie Laravel Permission across a stancl/tenancy multi-tenant architecture. Automated PDF and Excel report generation (DomPDF, PhpSpreadsheet), feature flag management (Laravel Pennant), hierarchical org structures with closure-table support, and a full audit trail via activity logging.
Banking System for Rural Banks & Credit Unions
A core banking product for rural banks and credit unions — processing deposits, withdrawals, and a full range of banking services. Integrates with Temenos T24 core banking systems used by major Ghanaian financial institutions, and exposes a REST API that receives transactions from mobile bankers in the field via mobile app. In continuous production since 2014. Has raised over 10 million Cedis in revenue.
Audio Sentinel
An end-to-end RAG solution for visibility into audio and video files — users can semantically search for what was said in any recording. AI models handle transcription, text embeddings, vector storage, re-ranking, and generation. 60% of the project was built in under a week through agentic coding with human review loops.
EaziSMSPro Mailer — Multi-Provider Transactional Email Service
A multi-provider transactional email delivery service with pluggable backends supporting AWS SES and Mailgun, allowing per-user provider configuration. API key-based authentication for programmatic access, email logging and delivery tracking, dashboard analytics, and per-user provider settings management.
Podcast Infrastructure Service
Hosts 5 podcasts (public and private) with DigitalOcean Spaces for storage and automatic syndication to connected social platforms including Telegram. Redis object caching and Varnish full-page caching cut sermon access wait times by 90%. Scaled to serve 100,000 requests per day.
A system in production teaches you things no book ever will.
Want to build
something like this?