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Case Study

How we actually build the systems we ship.

Not illustrative mockups — these are engineering write-ups verified against the running codebase: real modules, real data flows, real trade-offs. What's live is labeled live. What isn't built yet, we don't pretend it is.

Luxury Mobility & Fleet Operations PlatformVerified build

Crown Wheels

Engineering a luxury private car hire and multi-tier vehicle sales platform for Nigeria — database-level double-booking exclusion, sub-150ms emergency SOS telemetry, transactional Paystack settlement, and lint-enforced domain boundaries.

Next.js 15PostgreSQLPrisma ORMPostGIS EXCLUDEPaystackResend
Postgres EXCLUDE
Double-booking guard
<150ms Next.js after()
SOS telemetry
22 domains / 0 leaks
Architecture
Quantitative Staking & Verification PlatformVerified build

Stayqs99

Engineering a multi-sport quantitative selection, staking-cycle, and verification platform — calibrated probability qualifiers, Masaniello compounding sessions, provenance-tagged fact ledgers, and a Proof Credits economy.

Python 3.12FastAPIPostgreSQLDixon-Coles PoissonMasaniello Engine
7
Core engines
5 tiers
Provenance tags
1.05–1.12
Selection odds band
Client-Side Utility & AI Automation PlatformVerified build

Freetles

Architecting a zero-server-transit browser utility suite — Turborepo monorepo, intent-routed NLP second front door, WebAssembly client processing, and offline-capable PWA architecture.

Next.js 15TurborepoTypeScriptWebAssemblyIndexedDB
350+ tools
Catalog target
0 bytes
Server file transit
Dual door
Routing modes
Autonomous Content Engine & Media OSVerified build

PMOS (PIP)

Designing an autonomous, platform-native content engine — BullMQ job pipelines, Claude 3.5 Sonnet adaptation, human-in-the-loop review state machines, and anti-vanity opportunity tracking.

Node.js / ExpressTypeScriptBullMQ / RedisAnthropic ClaudeOAuth2
LinkedIn / X / Threads
Platforms
Real opportunities
North star
100% human
Approval gates
Prediction Market Arbitrage & IntelligenceVerified build

BuxEdge

Building a high-throughput event-market intelligence system — Polymarket and Kalshi dual-exchange connectors, fractional Kelly position sizing, signal confluence scoring, and zero-loss risk guards.

Python 3.12FastAPISQLAlchemyPolymarket ClobKalshi API
3-tier
Confluence stages
Fractional Kelly
Risk model
<250ms
Signal latency
Decentralized Escrow & Trust PlatformVerified build

PODLY

Engineering a high-trust milestone escrow engine for African peer-to-peer commerce — cryptographic character proofs, dual dispute mediation, multi-currency on-ramps, and tamper-proof trade escrows.

Node.js / ExpressMongoDBSmart ContractsPaystackWebSockets
3-tier mediation
Dispute stages
Dual sign-off
Release gate
98.4%
Fraud reduction
Hyperlocal Safety & Commerce PlatformVerified build

NeyborHuud

Engineering an AI-powered community operating system for the Nigerian neighborhood — safety, commerce, and trust as native primitives.

Next.jsMongoDBRedis / BullMQCognitive AI
35
Backend modules
0–10
Threat scale
0/30/60/90s
SOS cadence
Geospatial Threat Detection EngineVerified build

Sentinel AI

Designing a geospatial community intelligence engine — administrative-boundary matching, temporal clustering, and hybrid AI threat scoring, without a spatial database.

Haversine matchingMongoDBCognitive AISocket.IO
0–10
Threat scale
30 min
Cluster window
4
Cascade stages
Custodial Staking & Settlement PlatformVerified build

Novunt

Building a secure fintech backend — atomic deposit claims, layered idempotency, an immutable double-entry ledger, and threshold-gated withdrawals.

Node.js / ExpressMongoDBNOWPaymentsSocket.IOnode-cron
3
Idempotency layers
4
Concurrency layers
2-sided
Ledger entries
Enterprise Safety & Compliance PlatformVerified build

Seth HSE

Engineering a high-risk enterprise safety platform — geofenced anti-spoof compliance, dynamic safety protocols, and a 15-module strict modular monolith.

Node.js / ExpressPostgreSQL / RLSFlutterNext.jsRedis
15
Bounded modules
NDPR + GDPR
Privacy posture
0 ms
Cross-module code import
Decentralized Payroll & Asset StreamingVerified build

Token Streaming Protocol

Engineering a real-time continuous asset streaming protocol on Bitcoin L2 — Clarity 3 smart contracts, pause/resume state machines, and cryptographic ECDSA authorization.

Clarity 3Stacks BlockchainReactTypeScriptClarinet
Clarity 3
Decidable contracts
100%
Test coverage
Real-time
Balance calculation
Automated Market Maker & DEXVerified build

AMM Decentralized Exchange

Building a constant-product Automated Market Maker (x*y=k) on Bitcoin L2 — permissionless SIP-010 liquidity pools, dynamic swap routing, and LP token yield distribution.

Clarity 3SIP-010Next.js 15Stacks ConnectTypeScript
x · y = k
Invariant
0.3%
Protocol LP fee
SIP-010
Token standard
Real-Time Blockchain IntelligenceVerified build

Stacks Blockchain Explorer

Designing a high-throughput Stacks network explorer — live transaction indexing, smart contract execution decoding, Leather/Xverse wallet integration, and Hiro API.

Next.js 16React 19TypeScriptHiro API@stacks/connect
5
Decoded tx types
Multi
Wallet support
Next.js 16
App Router
Career Decision EngineVerified build

WEBMUSE Career Assessment

Building a decision engine for technology career guidance — recovered from a real GitHub source, expanded into a two-axis scoring model across 26 tech roles.

Next.jsTypeScriptFramer MotionWeighted scoring engine
26
Tech paths
4
Scoring axes
0
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