Lucas Barrientos Muñoz

Systems Engineer & Full-Stack Developer

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Experiencia

Co-Founder & CEO

Paylex

Oct. 2025 - Actualidad · 3 meses

España · Presencial

Co-Founder & CEO at Paylex — leading the vision, strategy, and product direction of a SaaS platform that simplifies invoicing and financial compliance for freelancers and small businesses in Spain. I focus on product design, business growth, partnerships, and ensuring our technology aligns with upcoming regulations like Verifactu and e-invoicing.

System Engineer

AG SOLUTION GROUP

Jul. 2025 - Actualidad · 6 meses

Almería, Andalucía, España · Presencial

System Engineer focused on MES/MOM solutions for one of the largest companies in the food industry. I design, build, and maintain production-grade software—acting as a software engineer (not industrial)—bridging IT/OT to deliver reliable, scalable systems on the plant floor.

  • • Develop MES/MOM features in C# and VB (.NET): work orders, traceability, batch execution, quality checks, and shop-floor data capture.
  • • Build maintainable back-end components, SQL data models, and interfaces that support real-time operations and auditability.
  • • Apply standards and best practices (e.g., ISA-95/ISA-88 concepts, clean architecture, testing, CI/CD) to ensure reliability and ease of change.
  • • Collaborate with operations, QA, and automation teams to translate production requirements into software that is observable, supportable, and safe to deploy.

Proyectos

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Sobre mi

I'm Lucas, a full-stack software engineer from the University of Almería who ships scalable, user-centric products. I focus on building systems that are cleanly designed, observable, and easy to evolve—balancing velocity with reliability so teams can deliver business impact without trading off quality.

Core stack: Angular, React, Next.js, Node.js, Express, Java (Spring Boot), PostgreSQL/SQL, JavaScript, HTML, Tailwind CSS.

Design & Architecture: 2+ years in software design—requirements specification, standards, dependency modeling and scaling.

Development: 3+ years hands-on across frontend, backend, and integrations.

DevOps (supporting role): 2+ years applying CI/CD and platform practices with Docker, Kubernetes, GitHub Actions, IaC (Terraform), container registries, and monitoring/logging (Prometheus/Grafana/ELK) to shorten lead time and raise deployment confidence.

I care deeply about the intersection of product and engineering: customer-obsessed discovery, data-informed decisions, and fast feedback loops. I take ownership from problem framing to production, favor clear interfaces and testable modules, and optimize for maintainability and total cost of ownership. I earned honors in multiple courses during my Bachelor's degree in Software Engineering, concentrating in Software Engineering & Project Management—most notably Rapid Application Development, which sharpened my ability to iterate quickly, validate with users, and convert ambiguity into shippable software.

If you're looking for someone who can move from requirements to reliable production, collaborate across functions, and continuously raise the bar—I'm ready to contribute. Let's connect.

Educación

Universidad de Almería

Bachelor's degree in Computer Science - Software Engineering, Technology

Sept. 2021 - Jun. 2025

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