Bartek Marnane

I'm an engineering leader with a proven track record of directing engineering departments to build scalable software at fast-growing tech companies. I bring deep experience across AI, security, and platform engineering, leading high-performance distributed teams from startup scale through to enterprise.

Recent roles

Atlassian Head of Engineering — Cloud Migration Platform Feb 2025 — Present
  • Lead a 100+ distributed engineering org enabling scalable, reliable data migration across Atlassian's product teams.
  • Re-engineered the migration platform to halve typical large-migration times with higher success rates and fewer manual interventions.
  • Industrialised tooling and playbooks to migrate complex enterprise customers — including major banks and retailers — and into restricted, government-grade cloud environments.
  • Drove 3× seat-migration throughput while cutting 28% of budget through automation and AI-assisted tooling.
GitLab VP of Engineering Mar 2019 — Sep 2025
  • Led 160+ globally distributed engineers across AI Research, Security, Compliance, Growth, and Fulfilment — supporting GitLab's Ultimate tier ($400M+ ARR).
  • Founded the Incubation Engineering department, pioneering GitLab's generative-AI and model-validation efforts; shipped LLM-based vulnerability explanation and remediation.
  • Recruited and mentored diverse, high-performing teams with consistently high retention and top engagement scores.
  • Drove the successful integration of multiple large technology acquisitions as part of the M&A team.
Local Measure Chief Technology Officer Dec 2014 — Feb 2019
  • Led and mentored engineering leaders and teams to deliver on the product roadmap and commercial goals.
  • Scaled the org through local hiring, established a UK team, and managed offshore and outsourced partnerships.
  • Drove agile delivery — scrum implementation, sprint planning, and cross-team coordination — and served as technical point of contact for clients and partners.
  • Established security penetration-testing programs and managed R&D rebate documentation.

Selected work