Hi, I'm Iván Barcia.
Digital product builder. I take products from idea to production, with a special craft for user interfaces and AI in the loop. Based in Galicia, Spain, working remotely.
How can I help you
I’ve been building for the web for more than 8 years. My background is frontend and UI: React, Next.js, Astro and TypeScript, design systems and plenty of Shopify. I also trained in interaction design, so I care as much about how a product feels as about how it’s built.
For the last two years I’ve worked on teams at the forefront of AI, building AI products for banks, insurers and businesses, and building them the AI-native way, with agents as part of the team before it became the norm. That changed how I work. Today I work across the whole product, from design to frontend and backend (Node and the JavaScript stack), and ship at a pace that wasn’t possible before.
Here’s where I can help:
- Join your product team as a product engineer, full-time or part-time.
- Build your product from the first idea to production: the interface, the frontend and what’s behind it.
- Take your UI further: design systems, complex products made simple, and closing the gap between design and code.
- Bring AI into how you work: designing and implementing AI workflows, from agentic development setups for engineering teams (harnesses, agents, MCP and skills) to MCP servers and integrations that connect AI to your tools and data.
- Online stores on Shopify, like the ones I built for FC Barcelona and Levante UD.
I like software that’s simple and well made: clear interfaces, solid foundations and nothing it doesn’t need.
Whether it’s a role, a project or a hand bringing AI into your team, let’s talk.
Where I’ve shipped
AiKitSenior Frontend & Product EngineerJul 2025 – Nov 2026
Remote (Madrid)
AiKit builds AI software that lets Spanish SMBs and enterprises put AI to work in their day-to-day operations.
- Key engineer behind the UI layer the whole product is built on: frontend architecture, components and the interface experience across the platform. Worked with my team to bring the design system into the product, bridging design and code.
- Designed and built interfaces that make complex AI capabilities clear and simple for non-technical business users.
- Being at the forefront of AI-assisted development meant a small team could ship full features at breakneck speed, and it let me be productive across a much wider scope: design, backend and marketing.
- Helped set up AI-native workflows (harnesses, agents, MCP) that took us from idea to production much faster.
TIFINSenior Frontend DeveloperOct 2024 – Jul 2025
Remote (Boulder, CO)
TIFIN is a US fintech that applies AI to wealth management, asset management and financial services.
- Worked as a frontend engineer on TIFIN’s AI products, mainly two of them: TIFIN Sage and TIFIN @Work.
- Sage is a conversational AI assistant that gives financial advisors portfolio insights across their clients, a “personalized CIO”. @Work is a conversational AI platform that guides employees through financial wellness and workplace benefits.
- Built interfaces for conversational experiences designed for financial advisors, wealth managers and employees.
- Worked in a demanding, fast-moving environment: clients were major banks and insurers piloting these products, so requirements changed from one day to the next and MVPs had to ship at startup speed.
- We were pioneers in the industry in building with AI, before it became the norm.
FreelanceSenior Frontend & Product EngineerSep 2024 – Jul 2025
Remote
Development projects for select clients, from online stores to product teams.
- Built Levante UD’s online store on Shopify: the UI plus the most important custom features, such as jersey personalization with a live preview of the printed name and number.
- Owned client projects end to end on my own: gathering requirements, shaping the approach and the plan, then building and delivering to production, across React, Next.js, Astro and Shopify.
RedRadix (incl. Weco)Senior Frontend & UI DeveloperMar 2022 – Oct 2024
Remote (Madrid)
Digital product agency. Weco was its Shopify spin-off.
- Built FC Barcelona’s online store on Shopify through Weco, the largest project of my agency years.
- Built websites for companies like GitHub, and did Shopify development for others like Meliá.
- Worked across dozens of projects and stacks (Next.js, Astro, Shopify): from design-led work on interfaces and design systems to complex features built in JavaScript.
- Became one of the team’s Shopify specialists.
OpositaTestFrontend Developer & Product DesignerJul 2018 – Jan 2022
On-site and remote (A Coruña)
Online exam-prep platform for public service exams in Spain.
- Joined as the first dedicated frontend developer, taking over the UI from the backend engineers and evolving it into a consistent, maintainable interface.
- Acted as the bridge between an external design team and engineering.
- Gradually took on ownership of the design system, in both design and code, and became the reference for frontend and UI.
- Worked on the redesign of the public website and the logged-in student area.
Projects
- Darkview: a native macOS photo viewer and importer.
- Garmin MCP: an MCP server to ask Claude about your Garmin health and training data.
- X Mount Lenses: a catalogue of lenses for the Fujifilm X mount.