Real systems we built, organised by what they prove we can deliver.

Echo Review App — Multi-Round Option Comparison & Point-and-Comment Feedback Shell

What it is Design review application built for client and internal design reviews on Cloudflare Workers, D1, and R2. Supports side-by-side option rounds, point-and-comment pins, voice-memo attachments, device-local draft recovery, and desktop stage reflow so the review panel does not cover the page.

What it shows we can do Shows we can build full-stack serverless web applications on Cloudflare Workers, D1, and R2 with responsive iframe stage reflow, point-and-comment feedback persistence, and automated headless-browser verification.

Quoteway — Server-Priced Lead Estimator & Consent-Gated Analytics (Demo)

What it is An own-work synthetic three-step quote and lead capture demo where Python enforces integer-cent pricing, SQLite stores idempotent lead and notification rows in one transaction, and browser dataLayer events fire only when analytics consent is active.

What it shows we can do Shows we can build conversion and quote flows that refuse client-side price tampering, recover drafts across page reloads, and strictly exclude personal fields from analytics event payloads.

Meissner.Services — Public Brand & Project-Intake Site

What it is Our live public site at meissner.services presenting how Brian Meissner and the AI engineering crew turn project ideas into working prototypes, with light and dark theme switching, project intake, and design-gallery access requests.

What it shows we can do Shows we can design and ship fast, accessible static brand sites with dark and light theme persistence and interactive process walkthroughs.

Meissner.Services Proposition — “The Maître d’, with Kenny”

What it is A six-course interactive hospitality-styled proposition walk-through for Meissner.Services featuring the echoed-Kenny host, the 50° Echo Slash divider, a size slider (shrinks to unreadable, then Kenny walks out), three tasting plates, and a live contact-intake bill.

What it shows we can do Shows we can design and ship distinctive, narrative-driven brand websites with custom SVG geometry, dark and light editorial typography, and accessible interactive controls verified across desktop and mobile viewports.

Responsive English & Spanish Bilingual Website Concept

What it is An own-site Meissner.Services design concept with instant English and Spanish language switching and responsive layout adaptation verified across desktop and 390px mobile viewports.

What it shows we can do Shows we can ship bilingual (EN/ES) web interfaces with independently reviewed Spanish copy (verified via back-translation), clean state toggling, and mobile-first responsive typography.

Privacy-Preserving Contact Intake & Tombstone Erasure Pipeline

What it is Public contact and project-request intake endpoint deployed on Cloudflare Workers and D1 (/api/contact and /api/contact/erase) paired with an idempotent Python poller that files structured crew tasks while keeping visitor personal data in erasable D1 storage with automatic 90-day retention.

What it shows we can do Shows we can engineer abuse-resistant public intake APIs (per-IP salted SHA-256 rate limiting, global hourly caps, honeypot filtering, and 32 KB streamed body bounds) with verifiable tombstone erasure and zero third-party form SaaS dependencies.

Relay HMAC Webhook Receiver & SQLite Transactional Outbox (Demo)

What it is An own-work synthetic Python and SQLite webhook integration demo with HMAC-SHA256 signature verification, replay-window enforcement, payload-hash idempotency keys, and an exponential-backoff outbox dispatcher.

What it shows we can do Shows we can build reliable API and webhook middleware that survives downstream 429 and 503 outages without dropping or double-sending events, backed by automated retry and dead-letter inspection.

50° Echoed-Kenny Mark & Echo Slash Parametric Brand System

What it is Parametric SVG brand mark and divider geometry for Meissner.Services built around the approved 50-degree up-left echo vector, five-band chromatic trail (#DF1629, #25543F, #987130, #142436, #14171A), and 0.82^i geometric decay.

What it shows we can do Shows we can translate art-direction feedback into mathematical SVG coordinate systems and reusable vector brand components across dark and light themes.

Interactive Workflow Mapper & Dependency Planner (“How We Work” Explainer)

What it is An in-house Meissner.Services interactive planning explainer that maps selected tools (such as CSV and Google Sheets) into a ten-step, seven-stage dependency graph showing parallelizable steps and ownership.

What it shows we can do Shows we can build clear, interactive technical explainers and rule-driven planning aids in vanilla JavaScript where users can select tools, inspect the generated stages, edit dependencies, and copy the plan.

Interactive Project Scope & Change Comparison Explainer

What it is An in-house Meissner.Services decision aid that compares an agreed baseline scope against requested changes, highlighting volume increases and new credential requirements alongside original deliverables.

What it shows we can do Shows we can turn complex delivery and scope-management rules into transparent, client-friendly interactive interfaces that make trade-offs explicit before work is re-baselined.

Browser CSV Cleaner with Deterministic Before-and-After Preview

What it is An in-house browser utility on Meissner.Services that normalizes messy CSV data client-side—removing duplicate and blank rows, trimming whitespace, and previewing exact row diffs before download.

What it shows we can do Shows we can build fast, zero-upload browser data utilities with deterministic cleanup rules and immediate visual diff inspection on synthetic datasets.

KPI Snapshot & Integer-Cent Reconciliation Pipeline (Demo)

What it is An own-work synthetic data pipeline demo combining an exported n8n workflow, a PostgreSQL schema, and a deterministic Python runner that reconciles daily order and refund CSVs into integer-cent KPI snapshots and self-contained HTML reports.

What it shows we can do Shows we can build auditable ETL and financial reconciliation pipelines where duplicate source rows are deduplicated, unreferenced refunds or negative totals fail loudly, and every KPI card reconciles to the cent.

TheHull & GigChase — Multi-Agent GTD Ledger & Verification Tooling

What it is Our internal Python operations kernel and cargo tooling that coordinates multi-agent task leases, git file claims, Echo feedback polling, portfolio artifact registration, and independent review gates.

What it shows we can do Shows we can build AI agent orchestration and delivery tooling designed so changes, browser captures, and deployments carry content digests and independent review before release.