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Information security specialist and mathematician with some software development skills, hands-on experience from data center work and fascinated by cryptographic protocols, information security challenges, and also data analysis.

I have 12 years of experience in UNIX/Linux systems administration and a range of practical network monitoring & troubleshooting and information security skills. I am also excellent at writing elaborate UNIX scripts.

All this is complemented with a passion for discovery and writing (see leisure activities), modelling and abstraction skill, some understanding of project work, a curious and investigative mind, attention to detail as would be expected from a mathematician, and an urge create something new and useful and to work in teams.

I also acknowledge the ever important human element in information systems security.

Work experience



Company: Prefer not to say. Details available in application.

Rebuilt and modernized the LAN, added central mgmt, migrated many systems to cloud (MS 365, Bitdefender GravityZone, PRTG, DokuWiki), migrated from Joomla to WordPress and secured it reasonably well. Designed and implemented an optimized security policy. Provided support to various types of customers.

Apr 2010Dec 2012

Area manager

Tallink Group (Turku, Finland and Tallinn, Estonia)

In addition to previous duties at Tallink Silja:
- Development of the UNIX department
- Corporate data backup

Oct 1999Apr 2010

Technical expert

Silja Line / Tallink Silja (Turku, Finland)

- UNIX/Linux solutions implementation and management and security
- Software integration (BEA Tuxedo, file transfers, other, programming)
- System & network monitoring (planning, development, management)
- Related infrastructure projects (Finland, Sweden, Estonia, on board)
- Network troubleshooting
- Technical support

Jun 1997Sep 1997

Computer technician

Ealing Young Mens Christian Association (London, England)

PC-support for a 9000 member organization, 120 staff: Supporting the office, hostel, shop, restaurant etc. IT systems.
- Buying and installing  computer hardware/software (pc)
- Providing one-to-one computer training
- File recovery and virus removal
- Data conversions and transfer
- Database administration
- Customer service, phone support



Master of science in mathematics (not completed)

University of Turku

Masters thesis in the works/too broad a subject/uncompleted.

Major subject: Mathematics. Emphasis on cryptography. Grade: later.
Minor subject: Computer science and information technology (including some information systems science). Emphasis on information security. Grade 5/5


Bachelor of science in mathematics

University of Turku

Bachelors thesis (mathematics) on Quantum Key Distribution (BB84).
Major subject: Mathematics. Grade 4/5
Minor subject: Computer science and information technology. Grade 5/5
Minor subject: Physics. Grade 4/5


Diving and cave exploration:

2010 Joined Finnish Caving Association and Turku YMCA dive club

2010-2015 Various certifications including but not limited to: NAUI scuba diving assistant instructor, NAUI Trimix Gas Blender, TDI Trimix diver, PSAI Full Cave Diver, Finnish diving federation certified body recovery diver. And single rope technique climbing for caves certification (

2014-2022 Finnish Caving Society board member and training officer

About 350 days (7hrs/trip) of diving done as of Sept. 2022.


2013-2015 Writer in Sukeltajan maailma, a Finnish diving magazine.

2013-2016 Writer in the Finnish Caving Society journal and in the journal of Sveriges Speleologförbund

2017-2022 Editor-in-chief of the annual journal of the Finnish Caving Society.

2019-2022 Webmaster for - built from scratch, secured and populated with articles. A lot of research in diving history done.

Information security:

2015 Coursera: Bitcoin and Cryptocurrency Technologies (nondegree online course by Princeton university)

2017 autumn: TUCS block chain seminar

2017 Founding member of the Turku information security society TurkuSec ry

2017-2022 Board member of TurkuSec ry