Ger Hartnett

Staff Engineer, MongoDB

Ireland

About

MongoDB Lead Performance Engineer. Investor. Formerly, CTO/Founder of Goshido, software architect at Intel, Tellabs & Digital, developer at Motorola & QC Data. I've managed small and large technical teams. I have software development experience in microcode, assembly, C, C++, Occam, Java, Javascript, jQuery, Angular, HTML/CSS, ruby, Linux, vxWorks, MongoDB, MySQL, Oracle, redis, Rails, Node. Software I've written has been deployed on processor microcode, kernel, device-drivers, network-appliances, fault-tolerant telco racks, databases, application servers, Jive & AWS/cloud. I'm enthusiastic about technology especially concurrent/distributed systems, design-patterns, startups, agile/lean and new ways of collaborating & building high-performance teams. I co-authored a book for Intel Press (embedded networking, performance & security) and have a MongoDB book about to be published.

Experience

  • MongoDB (12 yrs 8 mos)
    • Staff Engineer
      Jan 2026 - Present · 6 mos

      Making MongoDB core server run faster while using less resources

    • Lead Performance Engineer
      Oct 2020 - Jan 2026 · 5 yrs 4 mos

      Making MongoDB software run faster while using less resources

    • Area VP of Engineering (Technical Services EMEA)
      Apr 2017 - Jan 2021 · 3 yrs 10 mos

  • Founder & Director at coClarity Ltd.
    Jan 2008 - Oct 2018 · 10 yrs 10 mos

  • Founder & CTO at Goshido
    Jan 2008 - Jan 2015 · 7 yrs 1 mo

  • Software Architect & Manager at Intel
    Feb 2000 - Jan 2008 · 8 yrs

  • Software Engineer at Tellabs
    1996 - 2000 · 4 yrs