Kevin B. Wrobleski Jr. — Full-Stack Developer & Systems Architect

Flagship Architecture & Technical Specifications

Torning & Torning Lite

High-Concurrency Operations Platform, Workforce Scheduler & Manifest V3 Tactical HUD

A full-stack companion operations, scheduling, and real-time telemetry platform built on PHP 8.5, Laravel 13, Livewire 4, Laravel Horizon, and PostgreSQL. Engineered around strict CQRS action boundaries, a sliding-window distributed API rate limiter, an event-sourced workforce scheduling engine, double-entry faction accounting, a custom Discord Gateway bot, and a paired Manifest V3 Chromium extension.

PHP 8.5 · Laravel 13 Livewire 4 MFC Laravel Horizon 5 · Redis PostgreSQL · SQLite Tailwind CSS 4 · Alpine.js Vite 8 · Manifest V3 Larastan v3 · Rector v2 · Pest 4

132

Routed Livewire 4 MFC Pages (14 Domains)

345

Self-Authorizing Single-Verb Actions

201

Queued Horizon Jobs (6 Cron Schedules)

694

Pure Support & Read-Model Classes

192 / 335

Eloquent Models & Schema Migrations

1,217

Automated Pest & Architecture Tests

01 // Distributed Ingestion & Rate-Limiting Engine

Multi-Cadence Scheduler & Sliding-Window API Budget

Sliding-Window Rate Limiter: Custom TornClient and TornRateLimiter enforce per-user rolling windows capped at 90 req/min below the upstream 100 req/min ceiling, with HTTP 429 exponential backoff and multi-tier key probing (Minimal, Limited, Full Access, Faction AA).
Single-Bill Request Consolidation: Per-minute SyncTornUserStatus merges 15+ API slices (bars, battle stats, cooldowns, perks, money, missions, equipment, property) into a single upstream request, with automatic fallback degradation if slices are refused.
Priority Queue Isolation: 6 domain-segmented schedules orchestrate 30-second live chain/retaliation polling (SyncFactionRetaliationWindows on isolated faction-retaliation Horizon queues), 1-to-15-minute war/crime sweeps, and self-throttling 2-second historical backfill chains (BackfillUserGrowthSnapshots, SyncTornUserLogs).

02 // Workforce Scheduling & Slot Optimization

OC 2.0 Staggered Scheduler & Event-Sourced Ledger

Staggered Sequential Slot Math: Models 24-hour sequential slot planning via T + (K-1) × 24h join windows, eliminating up to 15 idle member-days per 6-slot crime so high-throughput operators can chain 5 concurrent 24-hour slot commitments.
CPR Fitness & Participation Modeling: Projects per-member, per-slot Checkpoint Pass Rates (oc_member_slot_fitness) from live API keys and historical slot outcomes, matching operators across anchor, flex, and juggler participation profiles.
Non-Destructive Re-Routing & Event Ledger: Issues persisted recommendations (oc_recommendations) supporting local single-slot re-routing without disturbing locked-in operators, backed by append-only event tables (oc_member_events, oc_slot_history) and automated effort-weighted payout cycles (oc_payout_cycles).

03 // CQRS Domain Boundaries & Financial Automation

Self-Authorizing Actions & Double-Entry Faction Ledger

Enforced Architectural Guardrails: All database writes execute exclusively through 345 single-verb App\Actions\{Domain} classes that self-authorize User $actor on entry, or System\ actions for headless cron jobs. Enforced at CI by ActionShapeTest, SupportBoundaryTest, BladePhpBlockGuardTest, and RawControlGuardTest.
Automated Double-Entry Accounting: Reconciles 5 faction news streams (depositFunds, giveFunds, armoryAction, armoryDeposit, main) alongside member market, bazaar, and trade logs into live income statements, balance sheets, armoury custody tracking, and war cache settlement calculators.
Cross-Engine SQL Compatibility: Strict query discipline supporting PostgreSQL in production and SQLite/MySQL in test suites with zero dialect drift.

04 // Real-Time Integrations, Browser HUD & Sandbox

Discord Gateway Bot, Manifest V3 Extension & Rollback Demo

Custom Discord Gateway Bot: Features 24 slash commands (/war, /chain, /oc, /bank, /spy, /stocks), 19 real-time alert sources (chain drop warnings, 30s retaliation windows, OC blockers), and 9 interactive button/modal handlers including one-click banker Vault & Reimbursement payout cards authorized via VaultActor Discord roles.
Torning Lite (Manifest V3 HUD): Chromium extension (Vite + ES Modules) with a single service-worker proxy (background.js), host-guarded pairing tokens, and Vitest static source compliance suites (torn-rules-guard.test.js) guaranteeing zero DOM automation.
Transactional Rollback Sandbox (/app/demo): Pre-seeded 365-day synthetic dataset across all modules where every mutating Livewire/HTTP request executes inside a database transaction that rolls back on completion (EnsureDemoIsStatic) with all outbound sockets faked (Http::fake()).

Commercial & Production Systems Portfolio

Operations · Scheduling · CRM mfm.wcgroups.com ↗

MFM Scheduler & Ops

Full-stack commercial operations, real-time technician dispatch, time-bank ledger, and 9-stage sales CRM built and deployed for Messina Floor Maintenance.

Real-Time Dispatch & Time-Bank Engine: Interactive multi-crew calendar (react-big-calendar) paired with a deterministic time-bank ledger (timeBank.js) that records per-job bankCharge deltas for atomic balance refunds on job edits or cancellations.
5-Tier Declarative RBAC: Enforced across client routing and firestore.rules for owner, admin, billing, sales, and user roles, backed by Node 22 Firebase Cloud Functions (createAppUser, deleteAppUser, scheduled resetTimeBanks).
Edge Proxy & Object Storage: Fronted by Cloudflare Workers (mfm-proxy, mfm-files) and Cloudflare R2 (mfm-scheduler-files) for zero-egress job documentation and attachment delivery.

React 19 · Vite 7 Firestore · Cloud Functions (Node 22) Cloudflare Workers & R2 9-Stage CRM

Property Ops · Contractor Portal tendown.wcgroups.com ↗

TENDOWN Property Management

Multi-role property operations platform unifying portfolio/tenant management, a stage-driven maintenance workboard, daily logs, financials, and a scoped trade contractor portal.

Zero-Email Contractor Provisioning: Controller-managed credential lifecycle mapping trade contractor usernames to synthetic @tendown.app Firebase Auth identities with instant password reset and revocation from the admin console.
Scoped Contractor Security Model: Document-level firestore.rules isolate trade contractors strictly to their assigned work orders, exposing site addresses, lockbox codes, stage transitions, and message threads while shielding portfolio financials.
Serverless Media Pipeline & CI/CD: Field photo uploads processed via Cloudflare Pages Functions (/api/upload) into Cloudflare R2 (tendown-photos served at /files/*), deployed via GitHub Actions.

React 19 · Vite 8 Firebase Auth & Firestore Cloudflare Pages Functions & R2 GitHub Actions CI/CD

Procurement Scraper · Bid Estimator NAICS 561720 / 561740

Bid Aggregators (iBid // OHIO)

Live multi-portal government procurement scraper engine, expiring federal contract recompete radar, and ISSA-612 commercial bid estimator for facility services across Ohio.

WAF-Resilient Multi-Portal Scraper: Automated puppeteer-core headless Edge/Chromium engine passing AWS WAF and Ivalua verification challenges across BidNet Direct (BIDNET-OH), OhioBuys (OHIOBUYS), Franklin County, SAM.gov (HAL+JSON API), and USASpending.gov recompete feeds.
BidNet Origin Unmasker & Date Gate: Extracts public AI abstracts and resolves paywalled aggregator rows back to free originating municipal portals across 24 Ohio city/county procurement platforms (OpenGov, Bonfire, Ivalua, Tyler Munis, PlanetBids) with strict future-closing-date validation and SSRF-hardened URL guards.
ISSA-612 Estimator & Pursuit Kanban: Calculates burdened labor, square-foot production rates, chemical costs, and monthly/annual contract pricing inside a pursuit pipeline.

Node.js · Puppeteer-Core SAM.gov & USASpending APIs ISSA-612 Pricing Engine Cloudflare & Firebase

Engineering & Operations Experience

Client Acquisition Tools

2025 – Present

Founder · Full-Stack Developer & Systems Architect

Architect, build, and maintain production web applications and automation engines across Laravel 13 / PHP 8.5 / Livewire 4 / PostgreSQL / Redis and React 19 / Vite / Node.js / Firebase / Cloudflare Workers & R2.
Design high-concurrency background job schedulers, sliding-window API rate limiters, event-sourced workforce optimization engines (Torning), and multi-portal headless procurement scrapers (iBid).
Deliver turnkey commercial operational software (MFM Scheduler & Ops, TENDOWN Property Management) covering discovery, database schema design, declarative security rules, edge deployment, and ongoing production iteration.

Messina Floor Maintenance

June 2018 – Present

Business Systems Analyst · Commercial Operations & Sales

Replaced fragmented spreadsheets, manual calendars, and disconnected email threads with a unified real-time scheduling, time-bank, inventory, and 9-stage CRM platform used daily across field and office staff.
Automated commercial bid discovery, ISSA-612 labor/production estimation, and multi-stage pipeline tracking for regional janitorial and floor maintenance contracts.
Restructured recruitment workflows with automated candidate screening funnels, cutting ad spend by $60+/day while improving hire retention across 3 operational roles.

Jakprints

May 2008 – Dec 2015

Apparel Production Controller

Directed multi-shift production scheduling and constraint optimization across 7 commercial printing presses, matching job queues to press capabilities and crew throughput.
Engineered an analytics and production-tracking database measuring press efficiency, turnaround velocity, and spoilage rates to drive labor forecasting across a 140+ employee operation.

Full-stack systems.Workflow automation.Built for production.