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Leonardo de la Fuente

@leonardodelafuente

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Senior Full-Stack Engineer specializing in frontend, product design, and scalable SaaS systems.

Australia

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What I'm looking for

I seek a product-led engineering role where I can lead frontend architecture and design systems, mentor teams, and deliver scalable, accessible SaaS experiences.

I am a Senior Full-Stack Software Engineer and technical founder with 17+ years building scalable, distributed products and leading cross-functional teams. I combine deep frontend and product design expertise with full-stack engineering to deliver pixel-perfect, accessible user experiences across web and mobile.

As a founder and CTO I led a global edtech company from startup to scale, reaching over 1.25 million K12 users, architecting cloud infrastructure, multi-tenant frontends and international payment and auth systems. I've driven large refactors and migrations, implemented observability and CI/CD, and established engineering and design systems used across multiple products.

I bring proven leadership in product-driven engineering, mentoring teams, and shipping high-impact features that improve performance, accessibility and retention. I'm an award-recognized entrepreneur, TED speaker and recipient of the Global Distinguished Talent Visa in Australia.

Experience

Work history, roles, and key accomplishments

Lead Frontend Engineer

Sonar AI

Apr 2025 - Jan 2026 (9 months)

Led frontend improvements for a SaaS analytics product, migrating legacy UI components, redesigning data-visualisation components, and achieving parity across web and native platforms to improve performance and maintainability.

TypeScript React React Native Expo Tamagui Webpack Storybook CI CD Stripe

Lead Frontend Engineer

Biza

Aug 2022 - Jul 2024 (1 year 11 months)

Sole senior frontend engineer who architected a white-label frontend system and company-wide design system, refactored legacy code to reduce load times by 60%, and implemented automated QA reducing test time by 90%.

TypeScript React Next.js Server Components Docker Kubernetes Jest Cypress Prometheus

Founder & CTO

Edoome, Inc.

Apr 2012 - Jun 2022 (10 years 2 months)

Founded and led an edtech platform to 1.25M users, architecting scalable cloud infrastructure, multi-tenant frontends, internationalisation and payments while growing operations across four countries.

TypeScript React Next.js AWS Kubernetes MySQL MongoDB CI CD Observability

Software Engineer

Ministry General Secretariat of the Government

Nov 2010 - Apr 2011 (5 months)

Developed and led web-based integration projects connecting government ministries and agencies, delivering internal solutions to improve inter-agency communication.