Hi, I’m Lucas 👋🏼

Software Engineer specialized in UX-driven and AI-integrated web solutions. With 20+ years in software development and 8+ years in UX and product strategy, I combine engineering, design, and AI to build digital products that are robust, scalable, and ready to evolve.

Lucas Semelin

I’m a software engineer with a background spanning websites, SaaS platforms, enterprise systems, and public sector tools used by 100,000+ people.

What sets me apart is not just coding, but thinking holistically about products — aligning engineering, user experience, and AI to design solutions that are usable and future-proof.

I collaborate with startups, companies, and organizations tackling complex challenges, helping them modernize processes, automate workflows, and launch new digital products. For me, every project is an opportunity to turn complexity into intelligent, sustainable solutions.

Key stats

Over two decades building digital products, with expertise in UX, engineering, and AI integration.

20+years in software development

years in software development

8+years in UX and product strategy

years in UX and product strategy

60+e-commerce and websites

e-commerce and websites

20+enterprise software, SaaS, and government projects delivered

enterprise software, SaaS, and government projects delivered

My approach

I approach every product holistically, combining engineering, user experience design, and artificial intelligence. It’s not just about code, but about building solutions that are robust, usable, and ready to evolve.

Solid engineering

Software Engineering

building robust, secure, and scalable systems designed to support business growth without compromising stability or performance.

User experience

UX Design approach

designing with people at the center, creating clear interfaces and intuitive workflows that reduce friction and increase adoption.

Applied AI

AI Integration approach

integrating artificial intelligence where it truly adds value: automating repetitive processes, augmenting team capabilities, and enabling autonomy in decision-making.

What I do

Over two decades building digital products, with expertise in UX, engineering, and AI integration.

Software engineering

Architecture, performance, and security for robust and scalable products.

UX/UI design & product architecture

From user experience to flows: clear, usable interfaces aligned with business goals.

Fullstack development

Laravel, Vue.js, JavaScript/TypeScript, and PHP ecosystems end-to-end.

AI integration

LLMs, agents, RAG pipelines, and automation to enhance capabilities and efficiency.

Featured Projects

A selection of projects where I combined software engineering, UX design, and AI integration to deliver robust, scalable digital solutions across different industries and sectors. The detailed case studies are still in progress.

Mi Caja

Mi Caja

Platform for the Ministry of Security of Argentina. Serves 100,000+ active and retired security force members, enabling document exchange between agencies and offering self-service functionalities.

Mi Caja

Arketify

A platform built around the Enneagram and behavioral patterns. From strategic consulting to fullstack development and implementation, I created a robust MVP to explore personality insights and validate with real users.

Arketify

Sistema Cóndor

Backoffice application for managing clients, payroll certifications, audit scheduling, and billing, enhanced with AI integration to automate processes and support decision-making.

Sistema Cóndor

The Carbon Watcher

Sustainability-focused SaaS. Starting with discovery and ideation, I designed the full UX/UI, developed the product end-to-end, and delivered a functional MVP for market validation.

Let's Build What's Next

Have an idea for a smarter product? Whether you're planning something new or evolving a live platform, I can help you design and build intelligent web software, where AI feels seamless, UX feels intuitive, and engineering stands the test of time.

Upload briefs, RFPs, screenshots, or other relevant files

Prefer a different way to connect?

[email protected]

Based in Buenos Aires, Argentina

working with clients around the world.