Fran Aragon

Software Engineer building scalable digital products.

React • Next.js • TypeScript

Based in PragueWorking with companies worldwide

Expertise

SaaS Platforms

Architecting scalable, multi-tenant systems with a focus on long-term maintainability and global growth.

Web Performance

Engineering high-speed interfaces optimized for Core Web Vitals, SEO, and business conversion.

Technical Direction

Bridging the gap between business goals and robust code through strategic product architecture.

Engineering products that scale.

Fran Aragón

I'm Fran Aragón, a Software Engineer specialized in building high-performance digital products.

I design and build scalable SaaS platforms, web applications, and native mobile systems that solve real business problems. My work focuses on clean architecture, performance, and long-term maintainability.

Currently, I work as a Software Engineer designing enterprise-grade architectures and scalable systems. Previously, I stabilized core infrastructure and led frontend architecture at Solutia, and built tools at adidas’ Innovation team used in global workflows.

I am also the founder behind HomeStocker, a native iOS ecosystem for smart inventory management.

Based in Prague. Working with companies worldwide.

View Resume

Experience

Proxify

Software Engineer

Proxify • June 2026 - Present

Confidential UK Venture Capital ClientJune 2026 - Present

Investment Management Platform

Engineering an internal investment management platform for a UK-based venture capital business, translating complex investment workflows into secure, scalable digital products.

  • Architecting and developing full-stack workflows covering investments, portfolios, capital calls, fees, payments and investor management.
  • Translating complex financial and operational processes into scalable domain models and product architecture.
  • Designing secure investor authorization and data-isolation models for external-facing experiences.
  • Engineering automated investor communications through Microsoft Graph and Microsoft Entra, including durable email delivery workflows.
  • Designing and implementing backend services, database models and transactional workflows using PostgreSQL, Drizzle and Supabase.
  • Maintaining engineering quality through automated testing, security regression testing, database validation and release engineering.
ReactTypeScriptViteTailwind CSSPostgreSQLDrizzleSupabaseVercelMicrosoft EntraMicrosoft Graph

Confidential SaaS Platform ClientJune 2026 - Present

SaaS Platform & Business Operations

Engineering and evolving a multi-system SaaS platform supporting agency operations, referrals, conversions, commissions and payout workflows, with a focus on reliable business logic, scalable architecture and end-to-end delivery.

  • Engineering full-stack workflows across agency management, referrals, conversions, commissions and payouts.
  • Translating complex business rules into reliable transactional systems, domain logic and scalable product architecture.
  • Designing and implementing role-based permissions, approval workflows and auditable financial operations.
  • Working across backend, frontend, integrations and shared UI components within an established Laravel and Livewire ecosystem.
  • Building and maintaining automated unit, integration and end-to-end testing, including regression coverage for critical business workflows.
  • Investigating and improving CI/CD, deployment pipelines and engineering delivery processes, including root-cause analysis of infrastructure issues.
PHPLaravelLivewireBladeAlpine.jsMySQLTailwind CSSPHPUnitPlaywrightGitHub ActionsDockerPHPStan
Solutia s.r.o.

Frontend Lead & Software Engineer

Solutia s.r.o. • Nov 2025 - Jun 2026

  • Stepped beyond frontend scope to stabilize core infrastructure, managing complex PostgreSQL database migrations and engineering reliable CI/CD pipelines.
  • Refactored and modularized key critical sections of a massive legacy codebase (navigating 5,000+ line monolithic files) to improve maintainability within tight project deadlines.
  • Led technical direction for B2B platforms, bridging the gap between fragile legacy systems and modern architectural standards.
adidas

Software Developer

adidas • July 2022 - September 2025

  • Software engineer within adidas Innovation, contributing to digital platforms supporting global product creation.
  • Co-developed the COCU tool, focusing on scalable frontend architecture and business synchronization.
  • Built internal applications with React and TypeScript prioritizing maintainability and performance.
  • Collaborated with cross-functional teams to ensure product success.
CEI Escuela de Diseño y Marketing

Fullstack Engineering Instructor

CEI Escuela de Diseño y Marketing • January 2022 - July 2022

  • Taught Web Design (HTML5, CSS3, JavaScript) and Fullstack Development (PHP, MySQL).
  • Mentored students through projects focused on production-level engineering practices.
GransLiving

Software Engineer

GransLiving • September 2021 - November 2022

  • Migrated a WordPress monolith into a modern scalable application using Next.js.
  • Designed and implemented UI architecture aligned with modern UX standards.
  • Optimized performance and responsive behavior for international audiences.

Let’s build your product’s future.

Direct communication

+420 774 363 226

Social media

Fran Aragón | Software Engineer