JAJerry Aneke
Architectural Catalog

Selected Systems & Case Studies

Production microservices, client commerce infrastructure, and data platforms. Every project is presented with verified technical guarantees, architectural trade-offs, and failure mode analysis.

01 / FLAGSHIP ARCHITECTURES3 SYSTEMS
FINTECH / AGENT COMMERCE
Sandbox Tested
Paystack test checkout offering Success, Bank Authentication and Declined test outcomes for a 500 naira payment.
Guarantee: Stock reservation is atomic: UPDATE inventory SET reserved = reserved + qty WHERE (on_hand - reserved) >= qtyVERIFIED
Backend Engineer (Built solo for a startup client)·Startup Client (Built Solo)

Ductape Multi-Provider Commerce

  • ›Modular monolith commerce backend exposing REST APIs and Model Context Protocol (MCP) tools for AI agents.
  • ›Atomic conditional SQL inventory engine guaranteeing zero overselling under high concurrency.
  • ›Multi-provider checkout saga integrating Paystack, Flutterwave, Stripe, and Mock with SHA-256 idempotency.
TypeScriptNode.jsPostgreSQLModel Context Protocol (MCP)Vitestpg-mem
FRAUD RISK / DISTRIBUTED SYSTEMS
In Production
Sign-in screen with a teal panel showing Open, In review and Resolved case columns, and a sign-in form with the email and password fields covered.
Guarantee: Critical scoring path writes asynchronously to Redis Streams; background workers batch-flush audit logs to PostgreSQL.VERIFIED
Sole Backend Engineer on Team·SQUAD by GTCO

SQUAD by GTCO — Fraud Prevention & Risk Control Room

  • ›Multi-tenant fraud prevention microservice evaluating transactions in under 5ms for GTCO's SQUAD platform.
  • ›Decoupled latency-critical scoring path from PostgreSQL persistence using Redis Streams and asynchronous workers.
  • ›Maker-checker investigation state machine enforcing regulatory compliance and strict segregation of duties.
PythonFastAPIasync SQLAlchemyPostgreSQLRedis StreamsLightGBMAlembic
DATA PIPELINE / AUDIO INGESTION
Deployed API
Voicer landing page headline: Build, manage, review, and scale audio datasets.
Guarantee: Application server never touches audio binary streams: uploads use 1-hour signed URLs direct to private storage.VERIFIED
Backend Software Engineer (Team Project)·NITDAHUB

Voicer API — Audio Dataset Platform

  • ›Modular backend API spanning 10 cohesive domains built with TypeScript, Express.js, PostgreSQL, and Drizzle ORM.
  • ›Two-step direct-to-storage signed URL pipeline offloading audio streams entirely from application servers.
  • ›Asynchronous reviewer assignment engine with multi-role access control and automated dataset exports.
TypeScriptNode.jsExpress.jsDrizzle ORMSupabase StoragePostgreSQLSwagger / OpenAPI
02 / Additional Projects

Specialized Prototypes & Systems

EMBEDDED / OFFLINE RELAY
Sandbox Prototype
BMONI Agent Relay Node dashboard with an account panel, an offline escrow queue and an AI assistant chat panel, in sandbox mode.
Guarantee: Local asynchronous escrow queue buffers transactions during network disconnects and reconciles upon reconnection.VERIFIED
Backend & Firmware Engineer

BMONI Agent Relay Node

  • ›Offline-first store-and-forward queue buffering cryptographic payment records during network disconnections.
  • ›Asynchronous relay service synchronizing local escrow events with blockchain ledgers upon reconnection.
  • ›Embedded C++ firmware communicating over PySerial with an integrated Gemini diagnostic assistant.
C++PlatformIOPythonPySerialIoT
Supporting Pipeline

AI Audio Collector

A supplementary dataset collection pipeline built with Node.js, Supabase, and Drizzle ORM to support community audio gathering.

TypeScriptDrizzle ORMSupabasePostgreSQL

Have a system to architect or review?

Open to software engineering roles. Available to discuss transaction consistency, payment integrations, or backend infrastructure challenges.

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