Engineering leadership · Madrid

Nacho Viejo

Engineering Manager bridging product, architecture, people leadership, operational excellence, and AI-augmented software engineering.

Profile

Building teams and systems that get easier to evolve.

Engineering Manager with 26 years of experience building software products, leading engineering teams, and evolving engineering organizations.

My career combines hands-on software engineering with people leadership, product thinking, and technical strategy. I help teams own the complete product lifecycle—from customer value and architecture to quality, reliability, long-term sustainability, and continuous simplification.

In recent years, I have focused on helping organizations adopt AI as an engineering capability: designing reusable workflows, coaching leaders and teams, and integrating AI responsibly into everyday software delivery with clear human accountability.

90–99%

Cache hit rates

Achieved through event-driven services and distributed caching while modernizing Eventbrite's highest-traffic Listings experience.

70%

CloudFront egress reduction

Reduced traffic and lowered daily infrastructure costs by approximately 30% through compression, caching, routing, and operational improvements.

378k

Incremental orders / year

Partnered with Product and Analytics to deliver multi-ticket selection, generating approximately 378,000 incremental orders annually; repeating-event improvements also increased indexed Listings pages by 23%.

Experience

Leadership grounded in technical depth.

Eventbrite · Madrid

Engineering Manager

Jan 2023 — Jun 2026

Led multidisciplinary teams of 7–13 engineers responsible for the Listings experience across web, mobile, and backend services. Engineering Manager responsibilities began in August 2022, with the formal title transition in January 2023.

  • Owned people development through coaching, regular feedback, career planning, performance reviews, team transitions, hiring, and promotion support.
  • Drove engineering strategy with Product, Design, SRE, Platform, and Analytics partners while keeping architecture, reliability, delivery, and engineering standards close to the team.
  • Led the extraction of Listings pages from a legacy Django monolith into an isolated AWS architecture with independently deployable, event-driven services and a modern web application.
  • More than halved response times, brought all Core Web Vitals into green ranges, strengthened SEO, and improved the platform's readiness for AI-mediated search and discovery.
  • Directed phased and blue-green rollouts for three critical services, including observability, incident response, on-call readiness, resilience, security, performance, and accessibility.
  • Introduced responsible AI-augmented engineering through workshops, reusable workflows, coaching, experimentation, and company-wide collaboration with AI Champions and the CTO.

Staff Software Engineer

Mar 2019 — Mar 2023

Provided cross-system technical leadership across Checkout and Listings. The final months overlapped with the transition into Engineering Management.

  • Shaped architecture and engineering practices for React, TypeScript, Node.js, testing, experimentation, and distributed systems.
  • Led complex customer-facing initiatives across multiple squads, translating product goals into technical direction, delivery plans, and coordinated rollouts.
  • Designed quality strategies that expanded scalable end-to-end testing, strengthened delivery guardrails, and supported more autonomous engineering teams.

Senior Software Engineer

Apr 2018 — Mar 2019

  • Helped build Eventbrite's unified Checkout experience with React, Redux, TypeScript, Cypress, and modern web engineering practices.
  • Introduced early end-to-end testing practices adopted across multiple teams and helped integrate Ticketea's engineers, systems, and delivery practices after its acquisition.

TheMotion Senior Software Engineer · 2016–2018

Built scalable ecommerce video-generation products across Python backend services, frontend applications, and media-processing pipelines, developing a Product Engineering mindset grounded in Lean Software Development and end-to-end ownership.

Civitatis Senior UI Engineer · 2015–2016

Joined as the second engineer hired; modernized the mobile experience, established CI/CD and automated-testing workflows, built a reservations back office, and led implementation of a complete product rebrand.

TAPTAP Networks Software Engineer · 2014–2015

Built full-stack advertising and reporting products with Node.js, Express, JavaScript, geospatial interfaces, and data visualization.

Indra Senior Interface Engineer / Frontend Lead · 2005–2014

Led frontend engineering across telecommunications, banking, government, energy, and air-traffic-control systems.

Earlier roles Design, engineering, and consulting · 2000–2005

Worked across interface engineering, UX, visual design, digital communication, and technical consulting.

Capabilities

From human systems to production systems.

Engineering leadership

People management, coaching, performance and career development, psychological safety, team effectiveness, engineering strategy, and organizational change.

Product engineering

End-to-end product ownership, discovery collaboration, customer outcomes, cost-aware engineering, developer experience, technical debt, and continuous simplification.

Architecture

Distributed and event-driven systems, backend-for-frontend architecture, modern web applications, performance, scalability, observability, and cloud architecture.

Quality and operations

End-to-end test strategy, CI/CD, phased and blue-green delivery, operational readiness, incident response, SRE collaboration, security automation, and reliability.

AI-augmented engineering

Context and harness engineering, spec-driven workflows, coding agents, MCP ecosystems, evaluation, reusable team practices, responsible use, and human accountability.

Technology

Python, TypeScript, JavaScript, Node.js, React, Next.js, Playwright, Cypress, AWS, DynamoDB, CloudFront, Step Functions, Docker, SAST, and SCA.

Education

A foundation in systems and design.

Management Accelerator Program
2024
McKinsey & Company
MongoDB for Node.js Developers
2014
MongoDB University
Certified ScrumMaster
2011
Scrum Alliance
Higher Technical Diploma in Graphic Design and Advertising
1998–2000
Escuela de Arte de Oviedo
Computer Engineering studies (Systems)
1991–1996
Universidad de Oviedo · Programme not completed

Leadership philosophy

“Engineering teams should own the complete product lifecycle.”

Engineering is not only about delivering features. It is equally about improving products, reducing complexity, removing obsolete functionality, lowering operational costs, increasing developer effectiveness, and creating the conditions for teams and systems to improve continuously.