Franz Geffke
Full-Stack Developer / System Architect
Remote (GMT +1)
mail@gofranz.com
Summary
Senior full-stack engineer with 12+ years of experience building secure authentication systems, blockchain solutions, and large-scale IoT platforms. Hands-on technical lead with global project experience across Asia, Europe, and the Middle East. Skilled in TypeScript, Python, Rust, and modern cloud infrastructure. Known for architecting reliable systems, shipping production code, and mentoring engineers.
Technical Skills
Languages: TypeScript, JavaScript, Python, Rust, C++, Go, Scheme
Frameworks & Tooling: Vue, React Native, Nuxt, NestJS, Express, Actix Web
Databases: PostgreSQL, MySQL, MongoDB, Firebase, Redis, ClickHouse
Cloud & Infrastructure: AWS, Docker, Ansible, Guix, Vagrant, Heroku, DigitalOcean, Hetzner
Other: OAuth2 / CIBA, eSignature, KYC, TPM2-TSS, Bluez/BLE, Espruino, Ethereum / IPFS, Bitcoin protocols
Environment: Linux (Guix), sway/wayland
Work Experience
Full-Stack Engineer, Softmax Co., Ltd.
Portugal & Thailand · 2021–Present
- Designed and built secure OAuth2/CIBA authentication for web/mobile with 10,000+ daily logins; integrated multi-level government ID verification (KYC) cutting onboarding time by 60%
- Developed API-first backend services (TypeScript, Rust, Python) for document management, e-signatures, notifications, and system observability; managed 30+ cloud/Docker hosts with 99.9% uptime
- Implemented IoT remote patient monitoring, connecting wearables with real-time clinical dashboards for 500+ users
- Built crypto exchange and NFT platform (ERC-1155), handling multi-currency transactions and secure digital asset management
- Delivered AI-powered data collection forms and multi-warehouse e-commerce systems (inventory, order, and shipping automation)
CTO / Full-Stack Developer, Sky-Hype AG
Switzerland & Luxembourg & Dubai · 2016–2020
- Led engineering for a global social/search platform (~50,000 daily users); built Vue.js frontend (multi-language) and Nest.js/Flask backend
- Integrated a meta-search API, increasing content breadth by 200%
- Drove international sales and partnership expansion; supported scaling to 100,000+ community users
Full-Stack Developer, DKKMA
United Kingdom · 2013–2016
- Delivered 20+ custom web projects (Bootstrap, CMS integrations) for diverse clients
- Developed analytics dashboards (Metabase, Google Analytics, MySQL)
- Managed client relationships and project delivery from scoping to launch
Earlier Roles (2010–2013)
- Q-Windows, Bangkok: Launched company website and integrated Salesforce CRM, improving lead tracking by 45%
- MJM Networks, Singapore: Built custom RAID storage for VMWare vSphere, managed Zimbra for 1,200+ users
- VBH Hardware, Beijing: Designed marketing materials for China market
Education
Taylor’s University College Kuala Lumpur, Malaysia · 2008–2010 International Business
German European School Singapore · 2006–2008 High School