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Marek Troszczyński Email & Phone Number

React Native and React Developer at Selleo Web and Mobile Software Development
Location: Bielsko-Biała, Śląskie, Poland 12 work roles 5 schools
1 work email found @selleo.com LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

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Current company
Selleo Web and Mobile Software Development
Role
React Native and React Developer
Location
Bielsko-Biała, Śląskie, Poland
Company size
95 employees

Who is Marek Troszczyński? Overview

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Quick answer

Marek Troszczyński is listed as React Native and React Developer at Selleo Web and Mobile Software Development, a company with 95 employees, based in Bielsko-Biała, Śląskie, Poland. AeroLeads shows a work email signal at selleo.com and a matched LinkedIn profile for Marek Troszczyński.

Marek Troszczyński previously worked as React Native / React Developer at Selleo Web And Mobile Software Development and Trainee React Developer at Selleo Web And Mobile Software Development. Marek Troszczyński holds Master'S Degree, Business Management from Jagiellonian University.

Company email context

Email format at Selleo Web and Mobile Software Development

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*@selleo.com
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Profile bio

About Marek Troszczyński

I’ve been working in IT since 2008, initially focusing on copywriting, design, advertisement, and digital marketing. After a while, I got involved in leading a couple of projects as a project manager, product owner, and business developer, working for companies in Kraków, Warsaw and Oslo. That made me curious about the deeper, creative side of tech projects and wondering about some of my ideas to build and test them on my own. I started learning programming from online resources, attending meetups as well as organising them myself on a regular basis. To organise the knowledge that I gathered being self-thought, I went for a full-time 2-months coding bootcamp learning front-end with React. Having the chance to be mentored personally by one of the developers at Selleo, I happily got involved and I continue learning and building mobile apps with React Native and React.

Listed skills include Marketing, Marketing Strategy, Marketing Communications, Marketing Management, and 25 others.

Current workplace

Marek Troszczyński's current company

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Selleo Web and Mobile Software Development
Selleo Web And Mobile Software Development
React Native and React Developer
Bielsko-Biala, PL
Website
selleo.com
Employees
95
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12 roles

Marek Troszczyński work experience

A career timeline built from the work history available for this profile.

React Native / React Developer

Current
Selleo Web And Mobile Software Development

Selleo is a web and mobile software development house serving clients in Europe, North America and Australia. We design, develop, integrate and maintain web and mobile applications for start-ups and SMEs. We are in a position to contribute rich expertise and experience gained on well over 150 software development projects implemented since 2005.

Sep 2021 - Present

Business Operations Manager

Pioner Labs

Oslo, Norway

- managing day-to-day business operations- establishing and optimisation of procedures- software development teams support- maintaining company's security policy- onboarding and offboarding

Oct 2018 - Jan 2020

Local Study Group Leader

Freecodecamp

Oslo, Norway

I had a great pleasure to organise, run and build community around weekly meetups for people self-studying programming and web development using primarily freeCodeCamp.org curriculum as a structure. It was an amazing opportunity to learn from more experienced developers as well as to support beginners on their path to building coding.

Oct 2017 - Jan 2020

Project Lead

Metrics Nordic As

Oslo Area, Norway

- project management- establishing and maintaining business partnerships- managing international software development team

Dec 2017 - Sep 2018

Product Owner

Daftcode Sp. Z O.O.

Warszawa, woj. Mazowieckie, Polska

Responsibilities:- Product Owner in lean startup process- Business Development and Marketing- Software Project Management- Growth Hacking and User Experience- Market, customer and product research- Data Analysis (Google Analytics and SQL)

Oct 2014 - Jun 2017

Creative Director

Nazwa.Pl

Kraków, woj. Małopolskie, Polska

Responsibilities:- Creative Team building, management and motivating (about 20 people) the division that creates advertising campaigns, apps, websites and internet stores- preparing marketing strategy and solutions based on gathered data- supervising of production and verification of all graphic creations and copywriting, looking after brand image- working.

Feb 2013 - Apr 2014

Marketing Manager

Nazwa.Pl

Kraków, woj. Małopolskie, Polska

- creating marketing communication strategy for services, products and www.nazwa.pl website (2 Webstar Awards in 2012)- cooperation with advertising agencies and supervising advertising campaigns- copywriting, preparing creative concepts and correcting materials

Jun 2011 - Jan 2013

Copywriter

Nazwa.Pl

Kraków, woj. Małopolskie, Polska

- copywriting - advertising concepts creation, content assembly- close cooperation with graphic designers

Jan 2010 - May 2011

Freelancer

Freelance

Kraków, woj. Małopolskie, Polska

- individual projects on copywriting, graphic design and visual identity systems

Jul 2008 - Jan 2013

Intern

Mediagraf Advertising Studio

Bielsko-Biala, Silesian District, Poland

- graphic design- photography

Jul 2007 - Sep 2007
Team & coworkers

Colleagues at Selleo Web and Mobile Software Development

Other employees you can reach at selleo.com. View company contacts for 95 employees →

AM Arkadiusz Machalica Arkadiusz Machalica Colleague at Selleo Web And Mobile Software DevelopmentBielsko-Biała Metropolitan Area, Poland View → MG Mateusz Górny Mateusz Górny Colleague at Selleo Web And Mobile Software DevelopmentBielsko-Biała, Śląskie, Poland, Poland View → MW Michał Wielopolski Michał Wielopolski Colleague at Selleo Web And Mobile Software DevelopmentBielsko-Biała, Śląskie, Poland, Poland View → MF Michał Firszt Michał Firszt Colleague at Selleo Web And Mobile Software DevelopmentBielsko-Biała, Śląskie, Poland, Poland View → W( Wojciech (Bob) Bożek Wojciech (Bob) Bożek Colleague at Selleo Web And Mobile Software DevelopmentBielsko County, Śląskie, Poland, Poland View → AB Anna Bala Anna Bala Colleague at Selleo Web And Mobile Software DevelopmentWrocław, Dolnośląskie, Poland, Poland View → KG Krzysztof Greń Krzysztof Greń Colleague at Selleo Web And Mobile Software DevelopmentBielsko-Biała Metropolitan Area, Poland View → MK Michał Klejdysz Michał Klejdysz Colleague at Selleo Web And Mobile Software DevelopmentBielsko-Biała, Śląskie, Poland, Poland View → KP Konrad Pazgan Konrad Pazgan Colleague at Selleo Web And Mobile Software DevelopmentBielsko-Biała, Śląskie, Poland, Poland View → LW Lukasz Walczak Lukasz Walczak Colleague at Selleo Web And Mobile Software DevelopmentBielsko-Biała Metropolitan Area, Poland View →
5 education records

Marek Troszczyński education

Bachelor'S Degree, Mixed Media Advertising

Bielska Wyższa Szkoła Im. J. Tyszkiewicza

Javascript React Developer Bootcamp

Coders Lab

Intensive full-time JavaScript React Developer course, covering: - Javascript - React - HTML - CSS - SCSS

FAQ

Frequently asked questions about Marek Troszczyński

Quick answers generated from the profile data available on this page.

What company does Marek Troszczyński work for?

Marek Troszczyński works for Selleo Web and Mobile Software Development.

What is Marek Troszczyński's role at Selleo Web and Mobile Software Development?

Marek Troszczyński is listed as React Native and React Developer at Selleo Web and Mobile Software Development.

What is Marek Troszczyński's email address?

AeroLeads has found 1 work email signal at @selleo.com for Marek Troszczyński at Selleo Web and Mobile Software Development.

Where is Marek Troszczyński based?

Marek Troszczyński is based in Bielsko-Biała, Śląskie, Poland while working with Selleo Web and Mobile Software Development.

What companies has Marek Troszczyński worked for?

Marek Troszczyński has worked for Selleo Web And Mobile Software Development, Pioner Labs, Freecodecamp, Metrics Nordic As, and Daftcode Sp. Z O.O..

Who are Marek Troszczyński's colleagues at Selleo Web and Mobile Software Development?

Marek Troszczyński's colleagues at Selleo Web and Mobile Software Development include Arkadiusz Machalica, Mateusz Górny, Michał Wielopolski, Michał Firszt, and Wojciech (Bob) Bożek.

How can I contact Marek Troszczyński?

You can use AeroLeads to view verified contact signals for Marek Troszczyński at Selleo Web and Mobile Software Development, including work email, phone, and LinkedIn data when available.

What schools did Marek Troszczyński attend?

Marek Troszczyński holds Master'S Degree, Business Management from Jagiellonian University.

What skills is Marek Troszczyński known for?

Marek Troszczyński is listed with skills including Marketing, Marketing Strategy, Marketing Communications, Marketing Management, Advertising, Online Advertising, Interactive Advertising, and Copywriting.

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