SergioPerea
Sergio Perea
About me

20 years combining code and business vision

I'm passionate about technology and innovation, with more than 20 years of experience in software development and technology consulting. My career began in 2001 as a programmer, and I've since evolved by combining my love of code with a solid business perspective.

I've worked both in my home country and abroad, across sectors as diverse as telecommunications, banking, insurance, and digital marketing. At every stage, my goal has stayed the same: deliver strategic, effective solutions that create a real impact on results.

Today I put that experience to work advising on process modernization and the rollout of technology tools that optimize management and customer relationships. I firmly believe in continuous learning, and that real progress only happens by growing together.

20 years of experience

  1. CRM Programmer — ONO
    2001

    CRM Programmer — ONO

    First steps as a programmer, building CRM solutions for one of the major telecommunications carriers.

  2. Software Analyst — Dexia
    2002

    Software Analyst — Dexia

    Entered the banking sector building software for financial systems, learning that code in production has real consequences.

  3. Senior Consultant — Ogilvy
    2005

    Senior Consultant — Ogilvy

    Moved into consulting, combining technology with relationship-marketing and CRM strategy.

  4. Senior Consultant — INDRA
    2007

    Senior Consultant — INDRA

    CRM consulting at France Telecom and BI Functional Consultant at Santander UK. First international experience, broadening both technical and business perspective.

  5. Insurance Broker & Board Advisor — JLA Asociados
    2011 – Present

    Insurance Broker & Board Advisor — JLA Asociados

    Leading the brokerage since 2011, advising on process modernization and the technology tools that optimize management and client relationships.

  6. 2025

    Independent Consulting

    20+ years on, combining full-stack development with business perspective to help companies modernize their technology.

Education

Universidad Politécnica de Madrid
1995 – 2001

M.Eng. in Computer Science

Universidad Politécnica de Madrid

ESIC Business & Marketing School
2005

Advanced Course in Relationship Marketing

ESIC Business & Marketing School

ESIC Business & Marketing School
2006

Advanced Course in CRM

ESIC Business & Marketing School

UNED
2014 – 2015

Degree in Insurance Mediation, Group A

UNED

Instituto Europeo de Posgrado (IEP)
2021 – 2022

Financial Advisory Certificate

Instituto Europeo de Posgrado (IEP)

Values & Philosophy

Craft & Clean Code

I don't just write code that works — I build software that lasts. I treat development as a craft, prioritizing readability, decoupling, and a modular architecture from day one to keep technical debt in check.

SOLIDClean ArchitectureType Safety

Continuous Improvement & Performance

The technology landscape moves fast, and so do my architectures. I constantly audit performance, security, and developer experience: 'good enough' is only the starting point.

PerformanceCI/CDRefactoring

Results-Driven Pragmatism

Clean code is worthless if it doesn't solve a real problem. I balance technical excellence with pragmatism, making sure every architecture decision is aligned with user experience and business value.

Business ImpactUXMetrics

Collaborative Ownership & Technical Integrity

Good software isn't built alone. I foster clear communication, solid documentation, and clean Git workflows, and I ship production-ready code that holds up under pressure.

Git WorkflowAPI DesignDocumentation

Hobbies & Passions

Outside of code, two passions that feed the same attention to detail: landscape photography and the mountains.

Fotografía de paisaje al atardecer

Photography

Landscapes, architecture, and travel. Capturing the right light takes the same patience and precision as debugging a production system.

🌅 Landscapes🏛️ Architecture✈️ Travel
Explore the full gallery
Montañismo en alta montaña nevada

Mountaineering

Hiking through the Picos de Europa, the Pyrenees, and the Sierra de Gredos. The mountain doesn't forgive improvisation — neither does a critical production system.

⛰️ Hiking🏕️ High mountains📷 Photography
See my routes on the map