Alex Duller

I am a software engineer and company director with 20 years of experience in delivering production systems from the ground up. I have deep domain expertise in the Global Mobility industry, having designed, built, and maintained enterprise-grade tax and immigration compliance software used by major multinationals such as Toyota, Ford, and Siemens over a continuous 10-year engagement. I have a proven ability to take full ownership of complex products, from architecture and development through to deployment, operations, and ongoing evolution, and to deliver where larger teams have not. I combine hands-on technical depth across the full stack with practical experience in product development, client delivery, and running a business.

Skills

• Product Ownership & Delivery
• Global Mobility Domain Expertise
• Full-Stack Technical Depth
• Productisation
• AI & Modern Tooling
• Web (Full Stack): TypeScript, React, Ruby on Rails, Python, PostgreSQL, SQLite, MySQL, Redis
• Systems & APIs: C, C++, Go, Python, Bash
• Mobile: Android, iOS
• Infrastructure & DevOps: AWS, Terraform, Ansible, Docker, Docker Compose, GitHub Actions, GitLab CI, Drone CI, Jenkins
• Linux: Ubuntu, RHEL, Rocky Linux, AlmaLinux, Arch Linux, Embedded Linux
• AI: pgvector, Anthropic SDK, OpenAI SDK, Google AI SDK, RAG, Agentic workflows
• Other: GSM/3G/4G basestation software, High-precision GPS, JSON, XML

Licenses and certifications

• CE marked product for Bath Institute for Medical Engineering

Awards and achievements

• First Class Honours in BSc Computer Science, Cardiff University