Fusion Second: Nobody gets a second attempt anymore.

Fusion Second is a software development and product design studio in Beirut and Athens. We design and engineer custom web platforms, mobile apps, and enterprise business systems for tech startups betting their runway on the build, and for established organizations replacing what they can't afford to get wrong twice.

A dozen people who have all seen a project go wrong.

Senior engineers and designers across Beirut and Athens. Shipping since 2012 for travel, publishing, healthcare, fintech, e-commerce, film and culture, engineering, and consumer brands across Lebanon, the EU, the United States, and the Gulf.

No account managers, no offshore second team, no handoff after the proposal is signed. The people who scope your project are the people who build it. Eight in ten of our clients come back, and half of them have been with us for more than a decade.

More about Fusion Second

2012
Founded in Beirut
2022
Expanded to Athens
12
Senior engineers and designers
78
Projects delivered
11
Enterprise platforms
80%
Repeat clients
50%
Clients with us over 10 years

Web, mobile, and AI development under one roof.

  • Web Design and Development

    Custom web platforms, websites, dashboards, and e-commerce. We design and engineer responsive, fast, accessible websites and web applications on architecture chosen for your traffic and your team.

  • Mobile App Design and Development

    Native and cross-platform iOS and Android development. Consumer apps, marketplaces, and field tools built in React Native or native code, from first wireframe to App Store and Google Play release.

  • AI Applications and Fine Tuning

    Custom AI applications, model fine-tuning and machine-learning integration, built around a defined task and the data behind it. Our experience delivering AI-enabled products also means we'll tell you when AI isn't the right tool.

  • Fractional CTO Services

    Senior technical leadership without a full-time hire: technical strategy, architecture review, delivery planning, technical-risk review and engineering-team guidance for founders and companies without an in-house CTO.

  • SEO & Generative Engine Optimization

    Technical SEO and Generative Engine Optimization: the site architecture, structured data, Core Web Vitals and content structure that help search engines and AI answer engines understand, surface and cite your brand.

  • Technical Consultation

    Software audits, second opinions, and recovery work on builds that went wrong. Scoping, vendor assessment, and due diligence for teams deciding what to build or whether to rebuild.

Explore the services

Selected work

  1. CERTY

    CERTYTECH AI LIMITED

    Maritime Credit Risk Assessment Platform

    2025 – ongoing

    B2B online platform, AI-powered, big data and machine learning

    A shipping invoice holds 280 fields. Most credit teams read 4.

    CERTY: we turned a single invoice into a live credit score

    We built a pipeline extracting 280+ structured fields from shipping documents at 99% accuracy in under 40 seconds, then a scoring engine combining them with live AIS vessel data to generate continuously updated risk scores. We also designed and built the interface, voyage replay, portfolio dashboards, and marketing site.

    • FastAPI
    • Python
    • ARQ
    • LangGraph
    • Gemini
    • ChatGPT
    • Postgres
    • PostGIS
    • TimescaleDB
    • pgvector
    • BunJS
    • ReactJS
    • Redis
    • Traefik
    • Docker
    • Apache Airflow
    Visit CERTY
  2. Twistr

    Twister SAS

    Travel Application

    2017 – 2025

    Enterprise architecture, B2C mobile application, proprietary algorithms, AI intelligence layer

    We shipped machine learning in 2017. Nobody called it AI yet.

    Twistr: we built the algorithm that strips a fare back to its real price

    We engineered the full stack: data infrastructure processing millions of flights, a custom algorithm removing personalization factors that inflate ticket prices, and a React Native app presenting the result as one number. We also built a door-to-door advisory layer covering safety, baggage, meals, and ground transport.

    Machine learning in production in 2017. The platform supported two seed rounds and grew to half a million users.

    • React Native
    • NodeJS
    • NestJS
    • Kubernetes
    • Kafka
    • Apache Beam
    • BigQuery
    • Docker
  3. Zesty Z

    DeliciouSnacks LLC

    E-commerce Platform

    2014 – ongoing

    Order management, user accounts, subscription management, and SEO/GEO-focused content.

    The reason people buy was printed on the back of the bag.

    Zesty Z: we rebuilt the storefront around a single nutrition claim

    We rebuilt the Shopify storefront around fiber: a dedicated education hub, a recipe engine driving organic search, and product pages built around nutritional macros. We added custom Liquid sections, conversion tracking, and subscription functionality.

    A full technical SEO overhaul covering architecture, metadata, and Core Web Vitals.

    • Shopify
    • Custom Liquid
    • Technical SEO
    Visit Zesty Z
  4. Walleti

    WALLETI LTD

    Cryptocurrency Exchange Application

    2024 – 2026

    B2C fintech application, enterprise architecture, blockchain application

    Hundreds of millions of people have cash and no bank account.

    Walleti: we built a crypto on-ramp that never touches a bank

    We built the full product: native iOS and Android apps, a crypto wallet, a redemption flow turning scratched card codes into ten supported coins in under 60 seconds, and a swap layer covering 160 assets. We integrated regulated custody and settlement partners, enabling the client to operate as a technology provider without holding funds, backed by a scalable enterprise architecture.

    Released on both app stores in Q4 2025.

    • React Native
    • NodeJS
    • NestJS
    • Redis
    • Kubernetes
    • Kafka
    • Docker
    • Bybit
    • OKX
    • Binance
    Visit Walleti
  5. AFAC

    Arab Fund for Arts and Culture

    Grant Management System & Custom Page Builder

    2012 – ongoing

    Nonprofit online platform, custom page builder

    Most CMS work ends when the client wants a layout you didn't anticipate.

    AFAC: we built a page builder, not a website

    We built the Arab Fund for Arts and Culture a custom website-building system with hundreds of modular blocks their team can freely combine and publish without code or developer intervention. Every page, including those we never anticipated, runs through the same system.

    We also integrated Formstack directly into the platform, bringing open calls and submissions into the website experience.

    • Laravel
    • Custom Page Builder
    • Template System
    • Formstack Integration
    • Bilingual EN/AR
    Visit AFAC

More work

Explore

Beirut and Athens

Two offices, one in-house team, working with clients across the Middle East and Europe.

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Every project starts with a conversation. Tell us what you're building.

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info@fusionsecond.com

Fusion Second

Beirut · Athens

info@fusionsecond.com

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