Cristian E. Caroli

Software Engineer and Manager

Barcelona, Spain 🌊

Engineering leader with 15+ years of experience delivering scalable systems, building high-performing teams, and driving product-led innovation.

Passionate about developer culture, platform strategy, and educational technology. Among others, I've spent time at Twitter, Chess.com, and ThoughtWorks.

πŸ›  Skills

πŸ’Ό Work Experience

Director of Engineering @ ChessKid (Chess.com)

Mar 2025 – Present | Remote (Barcelona, Spain)

Leading engineering at ChessKid, part of Chess.com, the world's number one kid-safe chess platform with over 13 million global users and more than 600K monthly actives.

  • Hands-on with backend, mobile, and web systems while driving architecture, reliability, and product delivery.
  • Partnering directly with the CTO and VPs, TLs and PMs across Chess.com to align technical execution, product strategy, and long-term platform growth.
  • Driving the adoption of agentic coding practices across the team, integrating AI-assisted development into daily workflows.
  • Focused on building high-performing teams and ensuring our little users have as much fun as possible without any downtime other than early bed times.

Director of Engineering @ Stuart

Aug 2024 – Mar 2025 | Remote (Barcelona, Spain)

Head of engineering for the Delivery Network Optimization convoy β€” 8 teams of engineers, analysts, data scientists, and product/program managers.

  • Led 8 teams of ~40 engineers and managers across Europe.
  • Delivered routing algorithms and internal tools powering millions of monthly deliveries across 128+ cities in 3 countries.
  • Improved delivery network performance serving 25,000+ business clients including Tesco and Pizza Hut.

Senior Engineering Manager @ Stuart

Feb 2023 – Aug 2024 | Remote (Barcelona, Spain)

  • Oversaw engineering teams in the Supply & Demand organization for Europe's leading last-mile logistics platform.
  • Drove incentive and demand management systems optimizing courier allocation across millions of monthly deliveries.

Engineering Manager @ Twitter

Aug 2021 – Feb 2023 | Remote (Barcelona, Spain)

  • Led 2 ad products teams (~12 engineers).
  • Delivered Quick Promote and Simple Ads.
  • Managed career growth and hiring.
  • Led launch of Boost (iOS version).

Tech Lead @ ThoughtWorks

Apr 2019 – Jul 2021

  • Led teams and technical delivery in AutoScout, ImmoScout and Zalando Warehouse.
  • Facilitated React/TypeScript trainings and tech leadership workshops.

Senior Consultant @ ThoughtWorks

Jan 2017 – Apr 2019

  • Delivered and maintained critical services.
  • Built client relationships and aligned strategy.
  • Contributed to internal and external events.

Head of Product Design @ Chalk

Aug 2015 – Jan 2017

  • Co-founded Chalk, a fantasy sports site.
  • Led product design and frontend development, brand identity, and UI.

API Solutions Engineer @ 3scale

May 2015 – Aug 2015

  • Led API implementations for high-profile launches using the 3Scale API Gateway.
  • Managed inductions of external teams into our architecture, code, support, and training for integrations.

Game Developer @ Akamon Entertainment

May 2013 – May 2015

  • Built social games in mundijuegos.com where we had a daily revenue of ~$50k in a platform of +11M users.

πŸ“œ Early Career Highlights

πŸŽ“ Education

πŸ’³ Memberships

πŸ“£ Speaking Engagements

🧠 Interests