Head of Engineering.

Buk · Chile · remote from Spain

• —Lead a 9-team organization — 60 engineers, direct and indirect reports — at Buk, an HR technology company providing HCM, LMS, attendance control and payroll to millions of users across Chile, Colombia, Perú, México and Brazil.
• —Own platform engineering, CI/CD and Ruby on Rails development, including two product-close teams: Activation (platform onboarding) and Starter (free tier, expanding to further countries).
• —Founded the DevEx-AI team and built an agent orchestrator for automated code review, feature flag cleanup and Sentry error resolution, cutting an estimated 40% of manual toil.
• —Leading the observability transformation with OpenTelemetry and Tsuga, replacing legacy monitoring with unified distributed tracing and taking MTTR from hours to minutes.
• —Define technical strategy, OKRs and roadmaps with Product and Design; manage Engineering Managers through weekly 1:1s and OKR reviews, and own career progression and compensation across the whole organization.

Buk · Chile · remote from Spain

• —Managed 6 engineers on the infrastructure and core features of a Learning Management System serving 2M+ active users.
• —Cut infrastructure costs 30% through Horizontal Pod Autoscaling, right-sizing, and a strategic AWS region migration from Chile to the US — while holding performance SLAs.
• —Reworked the deployment process around ephemeral PR-based environments and automated CI/CD, taking the feedback cycle from days to minutes.
• —Adopted a Platform as a Product approach: internal tooling treated as a product with SLIs, user research, stakeholder demos and iterative improvement.
• —Led the hiring and onboarding of 8 engineers across teams, with structured onboarding programs that cut ramp-up time by 30%.

Buk · Chile · remote from Spain

• —Led technical design and end-to-end delivery for an LMS used by 500+ organizations, on Symfony and React, under a 99.9% uptime requirement.
• —Implemented RabbitMQ-metric-driven Horizontal Pod Autoscaling, cutting average CPU waste by 25% and preventing recurring production incidents.
• —Mentored 4 junior and mid-level engineers through pair programming, code review and individual development plans, and reduced technical debt by 20% via systematic upgrades and static analysis in CI.
• —Drove the migration from a monolithic Symfony application to a service-oriented architecture, establishing API contracts and inter-service communication patterns that let teams work in parallel.

Freelance · Chile

• —Delivered custom web applications across e-commerce, logistics and education, owning the full project lifecycle from requirements gathering through deployment and maintenance.
• —Built long-term client relationships on clear communication and reliable delivery, with a 90%+ repeat engagement rate.