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Software Engineer · Full-Stack4+ years

I build web products that businesses actually run on.

Full-stack developer with over 4 years of experience taking web applications from an empty repository to production. I design the architecture, write the frontend and the backend, ship it, and then automate the manual work around it with AI.

Barcelona, Spain — remote friendly
12345
Years building for production
4+
Products shipped end to end
12+
Identified in annual client savings
100k€
About

Engineering that moves the business forward

I am a full-stack software developer. For more than four years I have been building and maintaining web applications that real people use every day — learning platforms, financial tools, booking systems and offline-capable apps — owning them from the first database schema to the production deploy.

My work sits across the whole stack. On the frontend that means TypeScript, React and Next.js with a serious focus on performance and accessibility. On the backend it means well-modelled APIs, relational data, background jobs and infrastructure that does not wake anyone up at night.

What I care about is the part that usually gets skipped: understanding why the software is being built. A feature that ships fast but solves the wrong problem is a liability. So I ask about the business before I ask about the framework.

Alongside product development I design AI automation for companies drowning in manual process work. Same discipline, different surface: find the expensive repetition, model it properly, and let software carry it.

How I work

Outcome before output

I start from the number you are trying to move, then work backwards to the smallest thing that moves it.

Fast by default

Performance and accessibility are requirements, not a phase two. Every page ships measured.

Plain language

You will always know what is done, what is blocked and what it costs. No jargon as a shield.

Built to be handed over

Typed, documented and tested where it matters, so the next developer is not stuck — even when that is you.

Toolkit

The stack I reach for most, chosen per project rather than by habit.

Frontend

  • TypeScript
  • React
  • Next.js
  • Angular
  • Tailwind CSS
  • Astro
  • Framer Motion
  • PWA / offline-first
  • Accessibility (WCAG)

Backend

  • Node.js
  • NestJS
  • Express
  • Java
  • Python / FastAPI
  • REST & tRPC
  • PostgreSQL
  • Prisma / Drizzle
  • Redis

Infrastructure

  • Vercel
  • Docker
  • GitHub Actions
  • AWS (S3, Lambda, RDS)
  • Azure
  • Supabase
  • Cloudflare
  • Observability
  • CI/CD

AI & Automation

  • OpenAI & Anthropic APIs
  • Third-party APIs
  • RAG pipelines
  • Vector databases
  • n8n / Make
  • Agentic workflows
  • Prompt engineering
  • Process mapping
  • Zapier integrations
Experience

Where I have been building

Product teams, agencies and direct clients across web platforms and automation.

Antoni B. López

2025 — Present

Barcelona, Spain

Full-Stack Developer & AI Engineer

Forvis Mazars

Building AI-integrated internal platforms for a global consulting firm: secure collaboration tools, document workflows and agent automation that teams and clients use every day.

Selected outcomes

  • Technical lead for a team of 4 on a company-wide collaboration platform — documents, tasks, requests and AI agent workflows under one product.
  • Shipped scalable AI-integrated features with React 19, TypeScript, Node.js, GraphQL and LangChain, deployed on Azure with CI/CD.
  • Raised delivery quality through rigorous code reviews and pull-request standards aligned with modern React and TypeScript practice.
React 19TypeScriptNode.jsGraphQLLangChainAzureJiraCI/CD

2023 — 2025

Barcelona, Spain

Frontend Developer

eXplorins

Client-facing product engineering for enterprise and government projects — from AI computer-vision prototypes to large Angular applications with Domain-Driven Design.

Selected outcomes

  • Delivered AI facial recognition (face-api.js) and gesture recognition (MediaPipe) for an Andorran government project, owning client communication and iterative delivery.
  • Built a Benetton application on Angular 19 and TypeScript with REST APIs, hexagonal architecture and DDD for long-term maintainability and scale.
  • Shipped data-analysis dashboards and E2E coverage with Playwright, working in Scrum with Jira, Confluence, Figma and AI-assisted development workflows.
Angular 19TypeScriptDDDREST APIsPlaywrightMediaPipeface-api.jsFigma

2022 — 2023

Barcelona, Spain

Frontend Web Developer (Freelance)

Giggin

Product UI for a live-events startup: real-time audience experiences built with React, TypeScript and WebSockets, from design handoff to production.

Selected outcomes

  • Implemented WebSocket-driven real-time updates so the product stayed live during concerts and gigs without full page refreshes.
  • Built the UX/UI in React and TypeScript with Sass, translating Figma designs into a responsive, production-ready interface.
  • Collaborated through GitLab with clear branching and review habits that kept a small startup shipping safely.
ReactTypeScriptWebSocketsSassNode.jsExpressGitLabFigma

2024 — Present

Remote

Full-Stack Developer & Automation Consultant

Independent / Freelance

Design and delivery of web products and AI automation for small and mid-sized companies, from first scoping call to production handover.

Selected outcomes

  • Delivered web applications end to end for clients across education, fitness and professional services.
  • Mapped and automated back-office processes, removing recurring manual work measured in full working days per week.
  • Set up the deployment, monitoring and documentation so clients could operate the product without me.
Next.jsTypeScriptPostgreSQLOpenAI APIVerceln8n

2023 — 2024

Barcelona / Hybrid

Full-Stack Developer

Product Company

Feature ownership across a customer-facing web platform, working directly with product and design in a small cross-functional team.

Selected outcomes

  • Shipped user-facing features from ticket to production, including the API, the UI and the tests.
  • Cut page load times substantially by reworking data fetching and rendering strategy.
  • Reviewed pull requests and mentored a junior developer through their first production releases.
ReactNode.jsPostgreSQLDockerGitHub Actions

2022 — 2023

Remote

Web Developer

Digital Agency

Client work across marketing sites and small web applications, with direct client contact and tight delivery windows.

Selected outcomes

  • Built and launched multiple client websites with strong Core Web Vitals and SEO foundations.
  • Standardised the starter setup used across projects, shortening the time from kickoff to first deploy.
  • Handled requirements gathering and demos directly with non-technical stakeholders.
TypeScriptNext.jsTailwind CSSHeadless CMS
Selected work

Products I designed, built and shipped

A sample of the applications I have taken from an empty repository to something people use every day.

View all projects
What I can do for you

Two ways to work with me

Whether you need a website that converts or an operation that runs itself, the engineering underneath is the same standard.

From450€

Web Development

Websites and web apps that load fast, rank well and turn visitors into customers.

  • A site that scores in the green on Core Web Vitals, not just on your laptop
  • Copy and structure organised around the action you want visitors to take
  • Technical SEO, metadata and structured data configured from day one
  • Accessible to keyboard and screen reader users, tested rather than assumed
Learn moreOrder on Fiverr
From0€

AI Business Automation

I find the manual work quietly draining your margin, and replace it with automation that pays for itself.

  • A costed map of every manual process, ranked by what it is worth to remove
  • Automation running in your existing tools rather than a new platform to learn
  • Documents, emails and data entry handled without a person in the loop
  • Reporting that builds itself instead of consuming a morning each week
Learn moreBook a call
Contact

Let us talk about your project

Tell me what you need. I reply to every serious enquiry within one business day.

Send a message

Typical reply time: under 24 hours

Or reach me directly

Prefer a conversation? Book a slot and we will talk it through.

Book a callTypical reply time: under 24 hoursEmail meantonilopezdev@gmail.com

Get in touch

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