Atro Tossavainen 🏳️‍🌈🇫🇮🇬🇧🇫🇷🇸🇪🇪🇪🇵🇱🇩🇪🇷🇺

M. Eng. (Inf. Tech.) | Person of reduced digital competency | Interested in contracting in cybersec, IT infrastructure, anti-spam | Growing a spam intel startup | FinEID 136964277 | EstEID 37308170088

Helsinki, Uusimaa, Finland

About

Professional UNIX/Linux sysadmin since 1996, computer enthusiast since the mid-eighties. Linux, UNIX, cybersecurity, storage, backup, e-mail, anti-spam. Small business owner, entrepreneur, contractor. Looking for contracts primarily, not direct employment offers. If you're going to send me an invite, do me a huge favour and add a letter of introduction. Then we can have a discussion and you're not forcing me to accept blindly or reject equally blindly. I will usually choose the latter if it's not totally obvious to me why we should connect. Please err on the side of caution. I am a GNU/Linux / UNIX systems administrator with IT security, backup and mass storage expertise. Anti-spam activist for 20+ years. Yeccchhh, but somebody's got to do it. I'm old and wrinkly enough to remember the times prior to the Eternal September. It was September 7608, 1993 as I originally wrote this and it is 9682 today.

Experience

  • Founder, Partner, Anti-Spammer, Cleaning Lady, Member of the Board, Visionary, Coffee Brewer at Koli-Lõks OÜ
    Mar 2015 - Present · 11 yrs 5 mos

    We operate a spamtrap consisting of approximately low 4 figures worth of domain names at present (and always growing). We comply with and frequently exceed M3AAWG Spamtrap BCP standards for safety margins. We can share information with you on what you are sending that you probably wouldn't want to be, and we can work with you to provide it in whichever formats and methods suit you best.

  • Owner, Principal Consultant at Infinite Mho Oy
    Jan 2010 - Present · 16 yrs 7 mos

    ICT consultancy focusing on GNU/Linux / UNIX infrastructure, cybersecurity, email anti-abuse, data protection, storage solutions. Physically located in Helsinki, Finland, will consider remote work for customers anywhere, partially remote assignments within a three hour land travel distance of Helsinki, and mostly remote assignments requiring infrequent travel only anywhere in Europe.

  • Tenori at Pääkaupunkiseudun Päivystävä Tenori
    2003 - Present · 23 yrs 7 mos

    Briefly in English: Sight-reading capable first tenor available for hire to work with choruses on short notice. Onko kuoronne vailla tenoria? Vakituisten löytäminen on tunnetusti hankalaa, mutta pääkaupunkiseudun päivystävä tenori pelastaa kun konsertti lähestyy eikä balanssi ole vieläkään kunnossa. Sujuva nuotinlukutaito, ääni joka taipuu kaikkeen mitä kuoron ykkösiltä voidaan vaatia, pitkäaikainen kokemus maan eturiviin kuuluvassa kamarikuorossa (-> myös modernimpi musiikki taittuu) sekä pitkäaikainen lauluyhtyekokemus (-> pystyy yksin kantamaan oman stemmansa) ovat lyömätön yhdistelmä. Solistitehtävistäkin voidaan keskustella. Laskutus oman osakeyhtiön kautta, ei tarvitse miettiä henkilön ottamista palkkalistoille. Tarvittaessa samalla vaivalla myös tilaisuuden äänittäminen ammattimaisella laitteistolla.

  • Email Infrastructure Consultant at Hosting company contracting for one of the larger ISPs in Finland
    Dec 2024 - Sep 2025 · 10 mos

    Customer had revamped their email system, deploying IaC, newest operating systems, good scalable virtual infrastructure and all that is good and holy, but needed a hand with email standards, the proper use of DNSBLs (both for reducing incoming spam as well as protecting outbound), managing SPF/DKIM/DMARC, TLS certificates, as well as other factors to make sure they were playing nice by the rest of the world while at the same time protecting their own customers from email-borne threats. My contract was for two months initially but kept being extended until at last they felt they were comfortable managing the system themselves. I was referred to this position by another contractor who had helped them build the infrastructure side of things.

  • Storage Consultant at An international healthcare IT company
    Jun 2023 - Dec 2023 · 7 mos

    Building a high-performance software-defined flexible storage system for the build and integration team's needs using Linux, Ansible automation, ZFS, iSCSI, iSER with Mellanox 25 Gbps networking.