Curriculum vitae / Lauri Tirkkonen
==================================

Contact
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 * <lauri@hacktheplanet.fi>
 * lotheac @ IRCnet and libera.chat

Languages
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 * Native Finnish
 * Fluent English
 * Conversational Japanese

Education
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 * 2008 – 2016: M.Sc. (Tech), Computer Science and Engineering at Aalto
   University School of Science (form. Helsinki University of Technology)
 * 2007: matriculation at Outokummun lukio

Work
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 * Undisclosed fintech company in Japan  
   2022-04 – present: Site Reliability Engineer
 * iconicchain Oy  
   2021-01 – 2022-03: Head of DevOps and Security
   * Building infrastructure (Hetzner cloud), supporting development (eg.
     creating tools to run dev workloads in hcloud), optimizing deliveries and
     Docker image builds, building CI/CD & improving test performance
 * Siili One Oy  
   2019-12 – 2020-12: Staff SRE
   * Consultant; technical lead on an embedded Linux system project for a
     customer in the telecommunications industry
 * Tuxera Inc.  
   2017-04 – 2019-12: Release Engineer
   * Development and maintenance of online build service used by customers,
     400k–600k kernel module builds delivered per year
 * Aalto University Department of Computer Science and Engineering  
   2009-05 – 2011-05, 2011-09 – 2017-03: Systems Designer
     * Unix (Solaris, illumos, Linux, OpenBSD) server and workstation
       administration. Xen and KVM virtualization, containerization with
       illumos zones
     * Building and upgrading internal systems, migrating from legacy
       solutions. Examples:
         * LDAP authentication and name services
         * Puppet configuration management for workstations and servers
         * Redundant firewalls with pfsync and CARP
     * Improving processes and workflows, eg. putting everything under version
       control, deploying an issue tracker
 * Eniram Ltd.  
   2011-05 – 2011-08: Software Developer
     * Maintenance/development of custom Linux distribution
     * Utilities and automation in Python and shell

Skills / experience
-------------------

 * Operating systems
     * Various GNU/Linux distributions (Debian, Ubuntu, RHEL, CentOS, Alpine,
       Void… you name it)
     * OpenBSD
     * illumos, Solaris 10, 11, OpenSolaris
 * Language preferences: C (C99), Python, shell
 * Instrumentation and debugging
     * bpftrace, DTrace, traditional debuggers like gdb, mdb
     * traditional Unix visibility tools (strace/truss/ktrace, ps, netstat,
       vmstat, fstat, etc.)
 * TCP/IP networks in depth, including IPv6
 * Network security: firewalls (pf, nftables, iptables), SSL/TLS,
   authentication and authorization
 * Storage: ZFS (incl. send/receive based backup systems)
 * Containers: systemd-nspawn, podman, Docker, Solaris zones
 * Orchestration: Kubernetes
 * Configuration management: Ansible, Puppet, Terraform
 * Monitoring, alerting & visualization: Prometheus, Grafana, rrdtool,
   collectd, New Relic
 * CI/CD: git, Jenkins, GitHub Actions
 * Build systems: OpenEmbedded/Yocto, Android, GNU make, BSD make, CMake,
   Meson, GNU autotools
 * Porting, packaging, patching and contributing to open source software

Other
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 * Tietokilta ry (computer science student organization) board member 2011
 * Compulsory Finnish military service completed