I’m Diego, Head of Engineering at Fans Holdings in Prague. FansAPI (formerly OnlyFansAPI) is our API platform for businesses in the creator economy.
I lead architecture decisions and our monitoring tooling, I’m on call when something goes down, and I’m the direct technical contact for our enterprise customers. I also own technical hiring: I review applicants’ test tasks and run the final interviews.
I’m still hands-on, with around 1,650 commits to the core platform since April 2025. Before this I built loyalty software at Piggy / Leat, worked at Dutch agencies, and ran technology for the non-profit Awoostria.
Case study · April 2025 – present
Formerly OnlyFansAPI · Fans Holdings
Also worked on: Account connection and authentication · Public API · Media infrastructure · Billing and monetization · Growth and analytics · Team and platform · Reliability and scale
Built the public docs site from scratch, replacing the original hosted docs. Includes the API reference, guides, integration pages, FAQ, AI chatbot, search, social preview images, LLM-friendly docs, and a docs MCP server. Maintained it for over a year.
A published community node for the n8n automation platform that covers the full API. Took it from first commit to version 1.1.
An iOS companion app for connecting creator accounts: QR and deep-link handoff, in-app sign-in, and secure session handoff to the backend. Also built its backend, error tracking, in-app bug reporting, and an automated TestFlight release pipeline.
A small pricing tool, embedded in the docs, that estimates usage cost.
Led the addition of a second creator platform: account connection and 2FA, the public API, media uploads and CDN, webhooks, data exports, AI tooling, and documentation.
A no-code bulk export product. Designed and built the UI, credit pricing, large archive generation, retries and recovery, and webhooks, then extended it to a second platform.
Built the original webhook system, then added delivery history, redelivery, dedicated retry queues, a circuit breaker, per-account scoping, and many new event types.
Crypto top-ups and subscriptions, billing details and VAT validation, and renewal reminders.
AI fan profile summaries and AI-powered analytics.
A partner and perks marketplace page, managed from the admin panel.
Introduced the internal admin panel and carried it through two major framework upgrades.
Also worked on: Registration & attendee management · Payments · Accounts, privacy & trust · Admin back office · Public website · Email & notifications · Infrastructure & reliability
The convention's own registration system, built from scratch: a guided checkout, order history, "my tickets", and an attendee home page. It supports multiple ticket tiers, day tickets, add-ons, stock limits, access codes for early orders, ticket transfers, and ticket upgrades.
Stripe-powered payments with a full order lifecycle: approval, payment deadlines, automatic reminders, overdue handling, and cancellations. Webhooks keep payment status in sync, including delayed bank payments.
A multi-panel back office for staff, split into administration, event management, website management, and on-site ticket scanning. It includes role-based permissions, staff single sign-on, two-factor authentication, audit history, dashboards, and data exports.
Generates print-ready badges from configurable templates per ticket type, including avatars, country flags, and scannable codes. Badges are produced in large queued batches. Includes paid fursuit badges, from ordering to printing.
A scanning interface for registration desk staff that validates tickets (including day tickets), shows attendee details, and tracks goodies handed out at check-in.
A public program with rooms, hosts, content labels, and an interactive calendar view, plus "add to calendar" support and per-session detail pages. Attendees can mark which sessions they plan to attend.
The public convention website. Nearly every page can be edited from the back office: home, about, team and volunteers, open positions, news, FAQ, policies, venue and travel info, guests of honour, and more.
An opt-in public attendee and fursuiter directory, attendee questionnaires, and the interactive story for the 2025 theme, where attendees pick a faction, earn achievements, and climb a leaderboard. An OAuth sign-in and a story API let companion apps use Awoostria accounts.
Earlier client work and side projects, from my first Laravel project in 2016 onwards.