Senior Software Engineer

IGNACIOMANSILLADERQUI

web3 → healthtech → broadcast → startup

Eight years building SaaS products, from early-stage startups to global platforms. I turn complex systems — sports tokens, clinical imaging, and broadcast platforms — into experiences people actually use.

ReactReact NativeNodePHPPythonTypeScript
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01

About me

I enjoy owning problems end to end: understanding people's needs, shaping technical solutions, and delivering performant, scalable experiences with measurable business impact.

Throughout my career, I have worked closely with Product, Design, and Backend teams to simplify complex workflows, improve engineering quality, and launch features used by thousands of people.

I am passionate about building maintainable systems — including cross-platform mobile apps with React Native — that help teams move faster, making pragmatic technical decisions that balance product goals with long-term sustainability.

8+
years of experience
4
domains: Web3, health, media, and fintech
1M+
users impacted in production
02

Experience

Senior Frontend Engineer

2023 — Present

Socios.com / Chiliz / Fantokens.com

Fan Token platform: a Web3 product used by sports clubs and millions of fans around the world.

  • Led frontend architecture and the delivery of strategic initiatives with Product, Design, and Backend from end to end.
  • Drove technical decisions focused on scalability, maintainability, and developer experience.
  • Built and maintained cross-platform mobile features with React Native, extending the experience to iOS and Android.
  • Designed APIs and backend services in PHP when needed, reducing dependencies between teams.
  • Redesigned rendering strategies and frontend architecture, improving performance and code scalability.
  • Mentored through code reviews and technical discussions, helping establish strong engineering practices across the team.
WEB3 · MILLIONS OF USERS

Senior Frontend Engineer

2020 — 2023

Qmenta

Medical imaging SaaS platform used by researchers and clinicians in clinical trials and neuroscience research.

  • Led frontend development for a SaaS platform supporting clinical trials and neuroscience research.
  • Built high-performance React applications capable of visualizing and manipulating large volumes of data while remaining responsive.
  • Collaborated with researchers, designers, and backend engineers to turn complex medical workflows into intuitive experiences.
  • Drove architectural improvements that reduced technical debt and gave the team greater confidence when shipping features.
HEALTHTECH · MEDICAL IMAGING

Senior Software Engineer

2019 — 2020

Paisanos.io

Digital products from MVP to production for startups across fintech, healthcare, education, and media.

  • Worked directly with founders and product owners to define MVPs and iterate quickly toward production.
  • Built cross-platform mobile MVPs with React Native, accelerating time to market on iOS and Android from a single codebase.
  • Owned the full software lifecycle: technical design, implementation, deployment, and customer support.
STARTUPS · FINTECH / HEALTHTECH / EDTECH

Frontend Engineer

2018 — 2019

Warner Bros TV

Digital experiences for millions of entertainment users around the world.

  • Contributed to large-scale digital products, delivering polished, high-performance user experiences.
  • Collaborated with senior engineers, designers, and product stakeholders on customer-facing features.
  • Owned frontend initiatives from implementation through release.
  • Strengthened engineering practices centered on clean architecture and collaborative work in an Agile environment.
ENTERTAINMENT · GLOBAL SCALE
03

Stack

FRONTEND

ReactReact NativeNext.jsTypeScriptReact QueryReduxJestTesting LibraryAccessibility

ENGINEERING

Design SystemsREST APIsSSRCI/CDCode ReviewsAgileProduct DiscoveryMentoring

BACKEND

Node.jsNestPHPLaravelSymfonyPythonUnit Testing
04

Results

  1. 01

    Led frontend initiatives across Web3, Health, and FinTech products.

  2. 02

    Built applications used by researchers, clinicians, and millions of fans.

  3. 03

    Took products from MVP to production, including mobile apps built with React Native.

  4. 04

    Collaborated directly with Product Managers and Designers on technical solutions.

  5. 05

    Designed APIs and frontend architectures focused on scalability and maintainability.