Senior Software Engineer & Product Builder
I build web applications, SaaS products and reliable integrations.
I'm a software engineer with 8+ years of experience building digital products, from complex frontend applications to complete SaaS platforms. Former Frontend Tech Lead at CrowdFarming. Co-founder of TraceLog.
- 8+ years building software
- Former Frontend Tech Lead at CrowdFarming
- Co-founder of TraceLog
What I do
I help companies, startups and agencies build, improve and maintain web products.
Web Applications & SaaS
Web platforms, dashboards, internal tools and SaaS products, from architecture and development to deployment.
Integrations & Automation
APIs, payment integrations and automated workflows that connect systems and reduce manual work.
Frontend Engineering
Building and modernizing frontend applications with a focus on architecture, performance, maintainability and testing.
AI & Agent Workflows
Structured AI-assisted workflows and agent-based systems with traceability, validation and evaluation.
Selected work
Products I've built, systems I've worked on and open-source tools I've created.
TraceLog
SaaS · Product engineering
An independent conversion intelligence platform that helps businesses monitor conversion paths and identify when important events stop arriving, leaving conversion data incomplete. As co-founder, I work across product development, architecture, frontend, backend, infrastructure and integrations.
CrowdFarming
Ecommerce · Frontend architecture · Technical leadership
As Frontend Tech Lead, I contributed to the evolution of CrowdFarming's web and mobile applications, including checkout and payment integrations, microfrontend architecture, end-to-end testing and engineering practices. This was a professional role, not a freelance engagement.
Eclizen
Multi-page website · Next.js
A multi-page website for a traditional Chinese medicine practitioner, including treatment information, blog content and appointment enquiries. Built with Next.js, React and Tailwind CSS.
Open source & engineering
I also build reusable tools and explore engineering approaches beyond commercial applications.
Spoorly
TypeScript · Browser SDK
A vendor-neutral browser SDK for capturing interactions, sessions, JavaScript errors and Core Web Vitals. Built with batching, retry mechanisms, local persistence and automated unit, integration and end-to-end tests.
Venture OS
AI agents · Workflows · Evals
An open-source, Claude Code-first framework for researching and challenging business ideas through specialized agents, traceable evidence, auditable decisions and reproducible evaluations.
About me
I'm Ignacio Cortés, a software engineer based in Spain. I've spent more than eight years developing web applications and working across frontend engineering, backend services, software architecture and technical leadership.
My experience combines working on established platforms like CrowdFarming with building products from scratch. I'm interested in the intersection of software engineering, product development and automation. I care about building software that's useful, understandable and maintainable, without unnecessary complexity.
My primary focus today is TraceLog. I also take on selected fixed-scope projects and part-time technical collaborations.
Core technologies
- TypeScript
- Angular
- React
- Next.js
- Node.js
- NestJS
- MongoDB
- Stripe
- Playwright
Experience
TraceLog
05/2025–present
Co-founder
CrowdFarming
08/2021–10/2026
Frontend Tech Lead
Futurs
04/2020–08/2021
Frontend Developer
The Key Talent
04/2019–02/2020
Frontend Developer
Have a web product to build, improve or connect?
I collaborate with startups, businesses and digital agencies on selected fixed-scope projects and part-time technical work. Tell me what you're building and where you need support.