Sean Ellul

Founder & Full-Stack Engineer
Malta & Cayman Islands · Problem solver first, domain expert second

I'm a full-stack engineer and technical founder who ships production software end-to-end — across mobile, web, AI, and the systems underneath. I rebuilt a 30k-user consumer app in Flutter, built a stack of open-source legal & civic tools (interactive constitutions, legislation and court-judgment readers, an AI tool over a public inquiry), and have been the first engineer at companies I co-founded — delivering for clients like UBS, Lazard, and Forever 21. I write code nearly every day, I lead and mentor engineers, and I move from idea to shipped fast.

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By the numbers

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GitHub contributions in the last 12 months — I code nearly every weekday
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Lines of code shipped across 80+ repositories
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Languages — full-stack across mobile, web, AI, games & systems
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Daily active users on a consumer app I rebuilt in Flutter
TIME
Featured in TIME Magazine on AI & the future of work
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Global clients delivered for as first engineer — UBS, Lazard, Roobet, Forever 21

Selected work — what I've built

Products I've shipped end-to-end — most are live, many are open source. A growing share are AI and legal/civic tools that make law, legislation, and public decisions easier to navigate. Filter by domain, or open them directly.

🇰🇾 The Cayman stack. A connected suite of legal, civic & fintech tools for the Cayman Islands — constitution.ky, legislation.ky, careers.ky, cheap.ky, claims.ky and caybooks (with a court-judgments archive, judgements.ky, in progress). Most of it designed, built, and launched inside a single year (2025–2026).

constitution.ky

Cayman Islands · Legal tech · open source · Launched 2025

A free, open-source interactive reader for the Cayman Islands Constitution Order 2009 — letting anyone search, navigate, and understand the supreme law that governs their rights, regardless of legal background.

Next.jsTypeScriptLegal techOpen source

legislation.ky

Cayman Islands · Legal tech · Launched 2026

Browse, search, and navigate Cayman Islands legislation — the Companies Act, Foundation Companies Act, Mutual Funds Act, VASP Act, and more — in a clean, fast, linkable reader built for people who actually work with the law.

Next.jsLegal techSearch

claims.ky

Cayman Islands · Insurance & claims · Launched 2026

A platform surfacing Caribbean insurance-claims expertise — pairing my risk-and-insurance background with clean, accessible product design for property and residential claims.

Next.jsInsurTechWeb

caybooks

Cayman Islands · Fund-admin fintech · Launched 2026

Multi-entity financial operations for Cayman fund administrators — accounting, reporting, and bookkeeping across many entities in one system, for one of Cayman's core regulated industries.

Next.jsFinTechMulti-entity

careers.ky

Cayman Islands · Career platform · open source · Launched 2025

An open-source platform giving young Caymanians a macro-to-micro view of the local job market, matching lifestyle to career with a clearer way to explore roles.

ReactViteOpen source

cheap.ky

Cayman Islands · Cost-of-living · open source · Launched 2026

“Shop smart, shop cheap” — a tool to help Cayman households find better grocery prices, taking practical aim at the islands' cost of living.

Next.jsWebOpen source

Cayman Hurricane Watch

Cayman Islands · Public-safety app · iOS & Android · open source

A public-first app that makes approaching storms legible and accessible to the people of the Cayman Islands — shipped quickly, when it matters most.

FlutterDartOpen source

VitalsGPT

AI over a public inquiry · national press

An AI tool that lets anyone interrogate and demystify Malta's Vitals public inquiry — making thousands of pages of a complex legal/political process answerable in plain language. Covered by Lovin Malta.

AI / LLMRAGLegal tech

Biology Buddy

AI study tool for A-level students · national press

An AI-powered tutor that helps A-level students study for their Biology exams — built to make a hard subject more approachable. Covered by Times of Malta.

AI / LLMEdTech

constitution.mt

Malta's first interactive constitution · open source

The same idea, built first for Malta — an interactive, searchable constitution with open analytics, made to support constitutional reform and public dialogue.

TypeScriptLegal techOpen analytics

FreeHour

Consumer app rebuilt + scaled to ~30k DAU

Rebuilt the entire app in Flutter, replacing an expensive third-party stack with one performant codebase. Owned analytics and tech direction as the app scaled to ~30k daily active users.

FlutterDartMobile

KLIEM

The Maltese Wordle · iOS & Android · open source

Spotted the gap, built it in a weekend, shipped to both app stores. A Maltese-language daily word game with a live, returning player base.

FlutterDartOpen source

Dungeon Agents

Godot dungeon crawler with autonomous AI agents · open source

A Godot game exploring AI agent behaviours — autonomous NPCs that perceive, decide, and act, as a sandbox for emergent play and agentic systems.

GodotGDScriptAI agentsOpen source

Engineering — full-stack, and shipping daily

I'm a full-stack engineer: I build the frontend, the backend, the mobile apps, and the systems underneath. Web in TypeScript / React / Next.js, mobile in Flutter, services, AI and tooling in Python and Node, games in Godot and C++, and smart contracts in Solidity. My GitHub is public — what you see is what I build.

TypeScript React / Next.js Flutter / Dart Python Node.js AI / LLMs & RAG Godot / GDScript C++ Solidity

Languages I build in

TypeScriptweb
JavaScriptweb
Dart / Fluttermobile
C++systems
Pythonbackend / AI
GDScriptgames
Objective-CiOS

Relative share of code across my repositories (GitHub language stats) — frontend to systems.

Coding consistency

I write code almost every weekday — and my contribution graph has gotten greener every year. 2,814 contributions in the last 12 months, on a curve that's compounded since 2022.

42
2022
79
2023
357
2024
906
2025
2,206
2026 ytd
80+ repositories · 37 open-source 750K+ lines of code 8 languages Pull Shark ×2 Pair Extraordinaire ×3 See the green graph on GitHub →

Experience

Co-Founder · TQ Labs
Dec 2024 – Present · 1 yr 6 mos
FounderEngineering
Developing the core technologies behind Trade Quest's gamified trading systems — a performance-first, competition-forward, community-native platform for practicing and competing at trading.
Lecturer · MCAST
Jan 2024 – Jul 2024 · 7 mos
Full-timeOn-siteTeaching
Led study units in Solidity programming, Introduction to Logic and Programming, and game development — including practical study units in smart-contract development and Roblox development.
Co-Founder · Metaverse Architects
Dec 2021 – Dec 2023 · 2 yrs 1 mo
Full-timeFirst engineerCTO/COO in practice
Pioneered the development of metaverse-focused use-cases and architected the future of the internet. Built and led product delivery during the metaverse boom, worked with major clients (Roobet, UBS, Lazard, Forever 21, Miami Fashion Week), and grew the team as the first developer. Featured in TIME →
Chief Operating Officer · Decentraland Architects
Oct 2021 – Mar 2022 · 6 mos
Full-timeOperations
Led operations across a fast-moving Web3 build studio during the metaverse boom.
CMJ Coordinator of Communications, Visibility & Outreach · Council of Europe
Jan 2020 – Mar 2022 · 2 yrs 3 mos
InternationalCommunications
Coordinated communications, visibility, and outreach for the Council of Europe's Advisory Council on Youth (CMJ).
Co-Founder · The Metaverse Cooperative
Aug 2021 – Dec 2021 · 5 mos
Full-timeFounder
Co-founded an early collective building toward metaverse-native products and use-cases.
Communications Officer · JEF Europe — Young European Federalists
Aug 2020 – Dec 2021 · 1 yr 5 mos
Full-timeBrussels
Drove communications for one of Europe's largest pan-European youth political organisations, based in Brussels.
Vice President · ESN Malta (Erasmus Student Network)
Aug 2019 – Aug 2020 · 1 yr 1 mo
Leadership
Vice President of the Maltese chapter of the Erasmus Student Network, supporting international and exchange students.
IPSC 2019 Oracy Coach · The English-Speaking Union
Jun 2019 · 1 mo
ContractLondon
Coached oracy at the International Public Speaking Competition (IPSC) 2019 in London with the English-Speaking Union.
Secretary General · Kunsill Nazzjonali taż-Żgħażagħ (KNŻ)
Aug 2016 – Feb 2019 · 2 yrs 7 mos
NationalLeadership
Secretary General of Malta's National Youth Council — representing young people at a national level, facilitating dialogue (including national conversations on civic education and abortion), and intervening at the UN on behalf of Maltese youth (2018).

Press & media

Featured

More media

See the full media library →

Awards & recognition

National Public Speaking Champion

Malta · 2017

Winner of Malta's National Public Speaking Championships, going on to represent Malta at the ESU World Finals.

ESU World Finals — Speaker

Churchill Room, London · 2017

Represented Malta at the English-Speaking Union World Finals with the address “To Define is to Limit”.

UN Intervention

United Nations · 2018

Delivered an intervention representing Maltese youth on the international stage.

Featured in TIME Magazine

TIME · on AI & the future of companies

Interviewed by TIME on AI and the metaverse — on how technology reshapes how companies and institutions work.

Tech for society

Biology Buddy · VitalsGPT

Built public-interest AI tools that drew national press — Biology Buddy (helping A-level students study) and VitalsGPT (demystifying Malta's Vitals inquiry).

Benjamin Franklin Transatlantic Fellow

US State Department · 2015

Selected for the US State Department's Benjamin Franklin Transatlantic Fellows Initiative at Wake Forest University.

Education

MSc, Risk Management & Insurance

University of Malta · 2019 – 2020

Grade: Merit.

RiskInsurance

Bachelor's, European Studies with Communications

University of Malta · 2017 – 2019

Grade: Second Upper. Student Representative of the Faculty (2017–2019).

European StudiesCommunications

Benjamin Franklin Transatlantic Fellows Initiative

Wake Forest University · Summer 2015

Selected for the Benjamin Franklin Transatlantic Fellows Initiative — a US State Department transatlantic program.

US State DeptFellowship