I build backend systems, APIs, platform tooling, automation workflows, production mobile products, business software, distributed-systems experiments, and production platforms for both independent products and client engagements.
6 major projects
3 production engagements
20+ frontend experiments
hub distributed systems & RPC
api APIs · tools · infrastructure · ERP
psychology
Engineering philosophy
I care about systems that do real work. My projects span distributed service communication, custom RPC systems, developer tooling, backend APIs, workflow automation, storage services, business software, and business intelligence. The common thread is turning complex workflows into reliable, maintainable software.
Selected production work for organizations where the engineering responsibility extended beyond a portfolio build: product architecture, operational software, connected systems, rollout hardening and sustained technical ownership.
A multi-stage engineering relationship spanning Azari Residences, Azari Luxury Properties, Azari Select, private-network partner systems, operations and developer products, and the wider Azari group. The engagement grew from solo delivery into primary engineering ownership across hospitality, property, financial-lifestyle and administrative systems.
Business systems · operational controls · production rollout
A proprietary ERP shaped around AB Artworld’s actual operating model rather than a generic administrative template. The system centralizes inventory, stock-taking and product import, sales and point-of-sale activity, staff-scoped access, approvals, auditability, reporting and production administration.
IoT platform · device lifecycle · production rollout
Engineering work on the V2 platform supporting PrimeAlert’s connected emergency and security products. The scope spans device-to-platform communication, event and alert processing, operational monitoring, device lifecycle concerns, firmware release workflows and over-the-air update orchestration, with the platform treated as production infrastructure rather than a standalone dashboard.
IoT PlatformDevice LifecycleEvent PipelinesFirmware OTA
sensorsV2 engineering joins connected devices, firmware lifecycle, operational control surfaces and emergency-event delivery into one production system.
Open-source and independently developed engineering work. This section is intentionally reserved for systems, tools, APIs and products that can be inspected through public repositories or demos.
Toolip v2.2.1 is a local-first JavaScript/TypeScript security CLI built around one canonical resolved dependency graph, measurement-aware scoring, bounded analyzers, AST security checks, secret and Git-history detection, SBOM generation, an encrypted atomic vault, staged-file pre-commit scanning, isolated upgrade PRs, and a read-only MCP surface. It supports Node 22/24 across Linux, macOS and Windows with verified npm release gates.
Measured Credit-Risk Runtime, Tail Risk & Model Governance
CRIX v3.2.0 keeps the live `/api/v3` scoring contract stable while hardening the engineering underneath it: precompiled in-process model execution, sparse explanation rescoring, measured HTTP/runtime benchmarks, explicit hardened auth/proxy controls, privacy-bounded OpenTelemetry, tamper-evident model lineage, adversarial drift and offline SHAP-fidelity validation, plus Gaussian/Student-t portfolio simulation, shared tail attribution and research-only POT/GPD EVT. Heavy research remains offline and NumPy stays the canonical reproducible evidence path.
TypeScript RPC Runtime & Wire Protocol Over Persistent TCP
Argus RPC v2 is a compact TypeScript RPC runtime and binary wire protocol over persistent TCP, rebuilt around real failure semantics: out-of-order multiplexed calls, distributed deadlines and cancellation, bounded server concurrency and socket backpressure, transient-aware retries, health-aware connection pooling, canonical statuses, interceptors, bounded metrics, codec extension primitives, and reproducible benchmarking. The v2 release has zero runtime dependencies and a 128-test / 37-file verification checkpoint across Node 20, 22, and 24.
Production Backend Scaffolding, Deployment & Release Automation
LaunchStack CLI packages a production backend baseline into one workflow: Fastify + TypeScript, Prisma/PostgreSQL, rotating and revocable JWT auth, Zod contracts, Swagger/OpenAPI, health/readiness endpoints, Docker, Vitest, GitHub Actions, provider presets, environment switching, secrets, deploy history and rollback targeting. Its latest hardening blocks API credentials from being forwarded to unsafe origins.
Durable Resumable Uploads, Range Downloads & Atomic Quota Control
VaultBox API v2.1.0 is a secure storage and transfer backend with PostgreSQL-backed resumable upload sessions, bounded parallel chunk ingestion, streaming SHA-256 assembly, HTTP Range downloads, atomic committed/reserved quota invariants, cursor pagination, indexed substring search, one-round-trip Redis throttling, bounded fallbacks, ownership-scoped sessions and migration-aware production startup on Render with Neon PostgreSQL and Upstash Redis.
Key capabilities
Resumable Chunked UploadsAtomic Quota ReservationsIdempotent Part RetriesParallel Range DownloadsStreaming SHA-256Cursor Paginationpg_trgm SearchRedis Lua ThrottlingOwnership-Scoped SessionsMigration-Aware Startup
Server-authoritative charging systems and driver/operator product delivery
Building across both the Go/PostgreSQL backend and the Expo/React Native product surface. My work covers station and booking domains, confirmation/PIN/start/progress/end/release charging lifecycles, idempotent and race-safe transitions, BOLA/RBAC, transactional notifications, bounded database access, Figma-aligned auth/onboarding and driver/station workflows, guest browsing, reservation recovery, completed-session ratings, conflict handling and OCPI interoperability architecture.
The deeper dossier separates shipped implementation from current review work and from OCPI architecture/research so the scope remains technically defensible as the codebase evolves.
Across AroonOscillator and ArcherMovingAveragesTrends, shipped two merged upstream Rust fixes: the MAX_PERIOD Rust/Python boundary correction and the AMAT reversal-state fix. Also proposed an amortized O(1) rolling-extrema RFC and documented the slow-MA hypothesis through maintainer reference review and closure.
The Azari Holdings engagement began with delivery of a resort-management platform and expanded into primary engineering ownership across Azari Residences, Azari Luxury Properties, Azari Select, partner and operations products, the group’s corporate brands, and the connected workflows needed to run them reliably.
Williams is a highly skilled software engineer who consistently delivers quality work. He quickly understood our requirements, communicated clearly throughout the project, and built a solution that exceeded our expectations. His professionalism, attention to detail, and problem-solving ability made him a pleasure to work with. Based on the success of our engagement, we were confident in entrusting him with additional software projects. I would gladly recommend him to any organization looking for a dependable and talented engineer.
Hon. Tony Chinedu NwuluChairman & CEO, Azari HoldingsFormer Member, House of Representatives, representing Oshodi-Isolo II Federal Constituency, Lagos State (2015–2019)
articleTechnical Writing — Technical essays and research notes on software systems, infrastructure, artificial intelligence, financial technology, and electric mobility.
