Łukasz Sielski

Angestellt, Head of Software Development, CMS, MailOnline
London, United Kingdom

Fähigkeiten und Kenntnisse

JavaScript
PHP
Java
C#
MySQL
PostgreSQL
MsSQL
JSON
Android
ActionScript
Flash
REST
Facebook
API
gaming
HTML
CSS
TypeScript
nextjs
llm
vite
supabase
vercel
Management
Product
Software
Frontend
Web
Consulting
Technology
Software Development
Information technology
CMS
Start-up
oracledb
MongoDB
Elasticsearch
Redis

Werdegang

Berufserfahrung von Łukasz Sielski

  • Current 8 years, since Jun 2018

    Head of Software Development, CMS

    MailOnline

    Reduced need for team on-call from several a week to zero. Introduced detailed monitoring. Removed 70% of high risk and high cost legacy - process ongoing Delivered critical improvements to editorial workflows as quick experiments, improved over time by internal user feedback and the data. Jun 2018 - Oct 2019 - transition to the role and team take-over, listed as Senior Developer

  • Current 12 years and 3 months, since Mar 2014

    CEO, Co-Founder, Director

    Sielay Ltd

    Delivered experimental projects that helped the current employers at the time. Kept on top of the current technology and challenges, even in stale and slowly moving environments. Published several books in topics ranging from Software Engineering to investigative journalism - to understand the current client.

  • 1 year and 7 months, Dec 2016 - Jun 2018

    Web & Desktop Lead

    PushFor

    Stabilisation and improvement of rushed MVP. Building and managing dev team. Introducing quality processes and guidelines.

  • 1 year, Jan 2016 - Dec 2016

    Senior Full-Stack Developer

    Enigma Marketing Services

    Contract Improvement and maintenance of the internal CMS system after the CTO's exit.

  • 1 year and 4 months, Oct 2014 - Jan 2016

    Lead Developer

    Time UK Inc.

    Managed two titles TrustedReviews and Decanter Introduced Ad-technology systematics, new role created to use my skill set.

  • 11 months, Dec 2013 - Oct 2014

    System Architect

    Apprecie

    Contract Stabilisation and improvement of failed MVP. Hiring and managing the dev team.

  • 2 years and 11 months, May 2011 - Mar 2014

    Branch Manager/Lead Developer

    PureHolidayHomes.com Ltd

    Responsibilities of VP of Engineering / CTO. Maintenance and growth of the product from post-MVP to acquisition. Building and managing team of approx 20. Transitioning the team during the founders exit.

  • 7 years and 9 months, May 2006 - Jan 2014

    Founder

    SIELAY

  • 1 year and 2 months, Apr 2010 - May 2011

    Consultant, Senior Developer

    Game Factory

  • 1 year, Apr 2009 - Mar 2010

    Senior JavaScript Developer

    Nokia Gate5 - Plan Solutions

  • 8 months, Aug 2008 - Mar 2009

    Application Architect

    WhereAreYouNow Ltd.

    • Generating rules and guidelines for development department. • Documenting and supervising software development projects. • Market research. • Corporate design and guidelines keeping.

  • 1 year and 10 months, Nov 2006 - Aug 2008

    Software Developer

    WhereAreYouNow Ltd.

    • Developing software for internet service (Visual Basic, Flash, MS SQL). • Developing tool appplications on Windows (C/C++, .NET).

  • 5 years and 8 months, May 2001 - Dec 2006

    Webmaster

    Przedsiębiorstwo Komunikacji Samochodowej w Szczecinie Sp. z o.o.

    • Corporate website development and manage. • Technological consultant.

  • 9 months, Mar 2005 - Nov 2005

    PHP Developer

    Gloport Sp. z o.o.

    • Web services development. • Desktop applications development. • Guiding co-operation with clients.

  • 10 months, May 2004 - Feb 2005

    PHP Developer

    GigaNet Sp. z o.o.

    • Web services development. • Desktop applications development. • Guiding co-operation with clients.

  • 2 months, Apr 2003 - May 2003

    Web Developer

    InterSoft Sp. z o.o.

    • Web services development.

  • 1 year and 8 months, Oct 2001 - May 2003

    Oddech - Youth Culture Magazine

    Publicist and Illustrator

    Publicist and Illustator on non-commercial off magazine.

Ausbildung von Łukasz Sielski

  • 1 month, Sep 2009 - Sep 2009

    Certificated JavaScript Developer

    W3C Schools

  • 2 years and 9 months, Feb 2007 - Oct 2009

    Economics and company organisation

    Zachodniopomorska Szkoła Biznesu

  • 4 years and 1 month, Oct 2003 - Oct 2007

    Economics and company organisation

    University of Szczecin

Sprachen

  • English

    C1 (Fließend)

  • Polish

    C2 (Verhandlungssicher / Muttersprachlich)

  • German

    A1-A2 (Grundkenntnisse)

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