About Elvifi

Where creative vision meets serious engineering.

Marcus Callum - Founder of Elvifi

Elvifi was founded by Marcus Callum — an artist and full-stack engineer who believes software should look as good as it works. Most developers can make something functional. Most designers can make something beautiful. Marcus does both, and that is what makes Elvifi different.

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Every project is a blend of visual craft and serious engineering. Holographic race cards with AI-generated voice narration. Real-time leaderboards that update in milliseconds and look stunning on every device. Enterprise dashboards that people actually enjoy using. The aesthetic is not decoration — it is part of the experience.

Based in York, UK. Working globally. Every line of code, every design decision, every deployment — handled personally. When you work with Elvifi, the person in the strategy conversation is the same person writing the code.

Key Milestones

2024

Elvifi Founded

Marcus launches Elvifi as a solo software consultancy, combining design and engineering under one roof.

2024

Deadly Dozen Partnership Begins

Engaged to build the first production system for a global fitness competition platform.

2025

Deadly Dozen Goes Global

Platform scales to 17,000+ athletes across 23 countries with eight interconnected production systems, AI chatbot, and holographic race cards.

2025

AI Integration Expertise

Claude-powered chatbot, AI voice narration, and automated content generation become core service offerings.

The Work Speaks

The Deadly Dozen platform — eight production systems, 17,000+ athletes, 23 countries. AI chatbots, holographic race cards, live judging, real-time leaderboards. Built from zero to a global enterprise platform. See the full case study.

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