Freelance & open to roles · AI Systems Engineer

I turn business processes into working AI systems.

AI-focused engineer who maps where automation and AI agents create real value, then builds and ships the system myself. Backed by full-stack depth: a Laravel SaaS with a custom analytics engine, native trading software, and an LLM-driven content platform, production systems, not demos. Available for freelance work, and open to the right full-time role.

production systems
3
lines of MQL
~78K
DB tables
98
LLM tiers
2
Selected work

Six systems, built end to end.

Each shipped to production. The numbers below are drawn straight from the codebases.

01Fintech / Trading

Riskeys

Trading-analytics SaaS

Founder & lead engineer

A Laravel platform that turns raw MetaTrader trade history into honest analytics. Traders run a custom client that streams their account state in real time; the backend computes performance, normalizes broker time, and surfaces behavioral patterns.

  • Custom analytics engine: six metric computers with partial-close grouping so a multi-leg exit counts as one trade.
  • Broker-clock normalization detects each broker's UTC offset and re-bases every timestamp before time-bucketing.
  • Seven behavioral pattern detectors (overtrading, revenge trading, discipline drift) on a clean interface/DTO contract.
  • Real-time trade sync: the client pushes account state as JSON every 100ms; the server reconciles open and closed positions.
87
models
193
migrations
98
tables
101
controllers
  • Laravel 10
  • PHP 8.1
  • MySQL
  • Stripe
  • Shopify
  • Telegram
  • Twelve Data
  • Resend
02Fintech / Trading

Riskeys EAs

Native MetaTrader software

Sole developer

The desktop side of Riskeys: trading-risk software written natively in MQL4 and MQL5. An on-chart panel for position sizing and journaling, talking back to the platform over a hand-built HTTP layer. Not an auto-trader; the trader always decides.

  • Custom on-chart GUI framework from scratch: 30+ classes for windows, panels, buttons and event handling.
  • WinAPI HTTP layer plus a JSON parser in MQL for token auth, trade upload and screenshot POST.
  • Prop-firm rule engine validating position sizes and daily limits from per-broker JSON configs.
  • MT4 and MT5 kept in parity through a documented dual-repo git workflow.
~78K
lines MQL
50+
modules each
30+
GUI classes
2
platforms
  • MQL4
  • MQL5
  • WinAPI
  • JSON
  • Inno Setup
03AI / LLM

ContentOS

AI content platform

Architect & builder

A Next.js + Supabase system that generates on-brand marketing content grounded in real product data. A dual-LLM design keeps publishable copy in the cloud and source-code analysis fully local, with an automated checker that blocks false claims before anything ships.

  • Dual-LLM split: Anthropic Claude for publishable copy, local Ollama for code analysis that never leaves the machine.
  • RAG pipeline ingests a codebase, chunks and embeds it with pgvector, and extracts marketing-safe product claims.
  • Automated claim and compliance checker validates every generated piece against a policy database.
  • MCP-based agent fulfillment: the app queues work, an agent pushes it (e.g. to Klaviyo).
103
tables
~3K
lines SQL
768
dim embeddings
2
LLM tiers
  • Next.js 14
  • TypeScript
  • Supabase
  • pgvector
  • Anthropic Claude
  • Ollama
  • MCP
04AI / LLM

Hermes Graph Memory

Persistent memory layer for an AI agent

Sole developer

A graph-based memory system for a personal AI agent: entities, relations and aliases persisted in SQLite, recalled automatically into every prompt via a submit-time hook. Built with an actual test suite, not just scripts.

  • Entity/relation/alias graph schema in SQLite, with a recall hook that injects relevant memory into every agent prompt.
  • Layered architecture (persistence, interfaces, backend) with an explicit layering check script to keep boundaries clean.
  • Migration system for evolving the schema, plus a corpus ingestion pipeline for backfilling historical context.
  • 7 test modules covering the doctrine service, graph runtime, memory service, migrations, tasks and tool registry.
50
commits
7
test modules
~2.5K
lines Python
1
recall hook
  • Python
  • SQLite
  • Graph modeling
  • pytest
05Infrastructure

NBHQ Company OS

LLM-agnostic operating layer for the business

Architect & builder

The organisational layer that lets any AI agent understand and operate across No Brainer HQ's ventures: department charters, registries, and an operating model expressed as structured, agent-readable documents instead of tribal knowledge.

  • 119 structured markdown documents covering 6 ventures, each with its own department charters and operating docs.
  • Registry system that gives any LLM a canonical, up-to-date map of infrastructure, ownership and process, no re-discovery needed.
  • Deliberately LLM-agnostic: works the same whether the operator is Claude, GPT or a local model.
  • Ops runbooks per host (hermes-host, nbhq-server, riskeys-vps) so infrastructure knowledge survives beyond any one session.
119
docs
6
ventures covered
3
ops runbooks
1
canonical registry
  • Markdown-as-data
  • Multi-agent orchestration
  • Documentation architecture
06Fintech / Trading

Tradelingo

Duolingo-style trading education platform

Architect & builder

A behavioral trading-education platform built from Riskeys' 140-day curriculum, turning a static course into an interactive, gamified learning product with its own product-design pipeline from research to shipped MVP.

  • Full product pipeline documented end to end: market research, UX research, IA, personas, journeys, wireframes, hi-fi design and handoff.
  • Next.js + Supabase app with Clerk auth and internationalization (next-intl) built in from the start.
  • 11 Supabase migrations defining the learning-progress and content data model.
  • ~13K lines of TypeScript across a real apps/ workspace, not a single-page prototype.
140
day curriculum
~13K
lines TypeScript
11
DB migrations
21
documented design phases
  • Next.js
  • Supabase
  • Clerk
  • next-intl
  • TypeScript
Also built
  • Execution Bridge

    Order-routing service

    A NestJS service that routes orders from the trading client to an exchange API and polls positions back, isolated behind HTTP.

    NestJS · Fastify · Prisma · PostgreSQL · BullMQ · Redis

  • Telegram Bridge

    Signal relay & account linking

    Two Python services: a Telethon listener that relays channel signals to the API with catch-up, and a bot that links Telegram users to dashboard accounts.

    Python · Telethon · aiohttp

  • Remotion Renderer

    Programmatic video

    Headless React/Remotion rendering of nine compositions: daily recaps, trade replays and social clips in widescreen, square and story formats.

    Remotion · React · TypeScript

  • Shopify Storefront

    Heavily customized Dawn theme

    A custom storefront on Shopify's Dawn theme with bespoke product, pricing and affiliate sections.

    Shopify · Liquid

Capabilities

AI-first, with full-stack depth.

AI / LLM Integration & Agents

Applied LLM work: integration, RAG & agentic workflows, not model training.

  • Anthropic Claude API
  • Local Ollama
  • RAG pipelines
  • pgvector / embeddings
  • MCP agent fulfillment
  • Agent memory & orchestration
  • Hermes
  • n8n
  • Make
  • Zapier
  • Prompt engineering
  • Claim & compliance checking

Full-Stack Engineering

From database schema to deployed UI.

  • Laravel / PHP
  • Next.js
  • React
  • TypeScript
  • NestJS
  • Node
  • Prisma
  • Tailwind
  • REST API design

Fintech / Trading Systems

Domain depth in trading and risk.

  • MQL4 / MQL5
  • On-chart GUI frameworks
  • Broker-clock normalization
  • Trading analytics engines
  • Prop-firm rule engines
  • Position sizing & risk

Data & Integrations

The glue that makes systems talk.

  • MySQL / PostgreSQL
  • Supabase
  • BullMQ / Redis queues
  • Stripe
  • Shopify
  • Telegram
  • Twelve Data
  • WinAPI HTTP

Tools I work with

About Me

How I think and work.

Beyond the systems I build, here is how I actually operate: fast on ideas, driven to ship, comfortable when the path isn't fully mapped out yet.

MBTI

ENTP-A

Comfortable with ambiguity, iterates fast on ideas, and pushes back when something doesn't add up.

PrinciplesYou

Shaper

Drives projects toward execution, results-oriented, sets a high bar and expects the same from collaborators.

Experience

A decade of building and shipping.

2016 · Present

Founder & AI Systems Engineer

No Brainer HQ

Map where AI and automation create real value across a business, then design and build the system myself: LLM integration, RAG pipelines, agent memory, and the connective infrastructure between AI models, data, and business software. Recent work: ContentOS (AI content platform) and Hermes Graph Memory (agent memory layer).

  • Agentic Engineering
  • RAG
  • n8n / Make
  • Claude
  • Automation

2022 · Present

Founder & Lead Engineer

Riskeys

Built a trading-analytics SaaS end to end: a Laravel backend with a custom analytics engine, native MQL4/MQL5 desktop software, and the integration layer connecting them. From schema to deployment, sole technical owner.

  • Laravel
  • MQL4/5
  • Analytics
  • Real-time sync
  • Fintech

2014 · 2022

Automation & Systems Engineer

Independent / client work

Built and integrated workflow-automation systems across e-commerce and digital services: APIs, webhooks, payment flows, and operational tooling that reduced manual work for several ventures and clients.

  • APIs
  • Webhooks
  • E-commerce
  • Stripe
  • Shopify
Contact

Let's build something.

Available for freelance engagements, and open to the right full-time engineering role in fintech, AI, or product-led teams. The fastest way to reach me is email.

Levinio Vliet · AI Systems Engineer