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Founder / Owner
Gotar
Apr 2011 – ongoing Gdynia, Poland / Remote- Founder of a one-man Ruby/Elixir consultancy
- Build many various project for clients from all over the world
- Working as a company adviser for Rebased - Software House (Business Consultant)
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Senior Software Developer
Impactpool
Sep 2021 – ongoing Remote- Helping Impactpool with a software and building/leading tech team.
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Senior Backend Developer
Belighted
Oct 2018 – Aug 2021 Remote- Hannah Online – backend for financial forecasting app (Rails, Ruby, Dry-rb, RSpec, PostgreSQL, GraphQL)
- AXS – backend for car sharing platform (Rails, Ruby, Dry-rb, RSpec, PostgreSQL, External APIs, SOAP)
- Admeet – backend for GDPR generator (ROM, Roda, Ruby, Dry-rb, RSpec, PostgreSQL, GraphQL)
- Helping company to growth
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Co-owner
Ragnarson
Jul 2014 – Oct 2016 Sopot, Poland / Remote- Build 3city office branch
- Help with growing from 10+ to 30+ devs
- Hire & train new developers (more than a 100 interns trained)
- Support clients as a PM & AM
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Senior Ruby Developer
Ragnarson
Apr 2011 – Jun 2016 Sopot, Poland / Remote- Getmii – Geo based IM backend system (API for mobile iOS and Android App) (ROM, Roda, Ruby, Dry-rb, RSpec, Postgres, ElasticSearch, REST API)
- Masii – Credit Cards & Insurances comparison platform (ROM, Roda, Ruby, Dry-rb, RSpec, Postgres, REST API)
- Locafox – Geo location price comparison platform (Ruby, Roda, PostgreSQL, ElasticSearch, RSpec, REST API)
- MaMyMo – high-performance backend system supporting Google Ads platform managing(JRuby, Threads, Sinatra, PostgreSQL, Redis, RSpec)
- Teon – Car manuals (Ruby, Rails, ActiveAdmin, MongoDB, RSpec)
- Tripsta (TravelPlanet) – high-performance support systems (>3000 req/s) (Ruby, Goliath, Sinatra, Redis, RSpec)
- Bellegs – Spree based e-commerce platform (Spree, Rails, RSpec, PostgreSQL)
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Web developer, DevOps
Renault Trucks (Bernard Trucks)
Aug 2006 – Sep 2010 Gdynia, Poland- Build and manage Linux based server
- Build company website (PHP, SQL)
- Build internal software (PHP, SQL)
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Web developer, DevOps
ITM Centrum Komputerowe
Apr 2006 – Jul 2006 Gdańsk, Poland- Build company website (PHP, SQL)
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Lecturer
ITM Centrum Komputerowe
Dec 2005 – Jul 2006 Gdańsk, Poland- Lecturer on various professional courses: Linux System Adminstrator, Flash (Action Script), Photoshop, PHP
Oskar Szrajer
Ruby programmer & Web developer
- [email protected]
- +48 608-019-078
- Gdynia, Poland
Experience
Voluntreer Experience
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Open Source Contributor
Various projects (details on GitHub)
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Speaker
TRUG, Wroclove.rb
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Lecturer
University of Gdańsk (Ruby, Elixir)
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Mentor
Rails Girls Łodź & Tricity
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Founder
TRUG – Tricity Ruby User Group
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Judge
Ruby Rampage