We build apps we are proud of.

About the Team

Who Are We?

We are a small mobile development shop, designing and developing award winning apps, since 2011.

We love what we do and we like to keep it simple and professional. We think that passion, hard work, pixel-perfect design and organized communication lead to a great product.

About the Founders

Passion Changes Everything

Oana & Arthur Csertus are both software engineers passionate about mobile, technology, tea and travel.

Cobalt Sign was started in 2011 after Oana & Arthur won a few international mobile development prizes and decided to focus on mobile development.

About The Zen Room

Our Values

We value team spirit, curiosity and authenticity.

The Zen Room is our place to discuss & plan, to review sprints & code, but also to relax and find inspiration for our apps, all while having a perfect cup of tea.

About our Style

01. Values

Authentic, agile, open & reliable describe our work ethic.

About our Workflow

02. Tools

We work best with JIRA, Bitbucket, Confluence and Hipchat by Atlassian. Occasionally, for fun ideas and office projects we also use Trello.

About Communication

03. Agile

Basecamp and Asana are our best friends to keep all the projects clean, well-organized and transparent for our customers.

About Volunteering

Giving Back to the Community

 

Mobile Summer is an initiative started by Cobalt Sign in 2014,  through which we offer free mobile development courses for high-school students.

After two successful editions, Mobile Summer 3.0 will take place next summer. Read more about this project on www.mobilesummer.org.

About Conferences, Presentations, Trainings, Workshops and Labs

 

Speaking of…

We’ve developed apps for the community from Timișoara in collaboration with 3 local NGOs. – June 25 – July 5, 2017

Arthur presented the Google Play Developer Console and its latest feature, the Pre-Launch Reports. – May 17, 2017

Arthur talked about our app, Ready Set Holiday!, and its road to 1 million downloads. – April 12, 2017

Oana & Arthur Csertus mentoring at the first edition of Startup Survivor – November 15, 2016

Oana Csertus & the Mobile Summer 3.0 crew speaking of the outcomes of the 3rd edition of Mobile Summer – October 10, 2016

The Cobalt Team organizing the 3rd edition of Mobile Summer – August 20-28, 2016

Oana Csertus speaking about women in startups – March 16, 2016

Oana & Arthur Csertus speaking of Ready Set Holiday! – January 20, 2016

by Cobalt Sign, a free summer course for high school students to learn mobile development, Ambasada, Timisoara – August 17-29, 2015

Oana Csertus @ Anita Borg Celebration, Timisoara – January 17, 2015

Oana & Arthur Csertus – Mentors /Jury for Mobile and Kids Tracks  – October 18-19, 2014

MOBILE SUMMER 1.0 PROJECTS

Oana Csertus @ Timisoara Mobile Development Group Meetup  – September 15, 2014

by Cobalt Sign, a free summer course for high school students to learn mobile development, Colegiul National “C. D. Loga” Timisoara – July 14 – August 1, 2014

Oana Csertus @ Windows Phone Week Timisoara – October 7, 2013

Oana Csertus @ Windows Phone Week Timisoara – October 7, 2013

NEW FEATURES IN VISUAL STUDIO  2013 AND WINDOWS 8.1

Oana Csertus @ Ronua Roadshow 2013 – July 9, 2013

CROSS-PLATFORM MOBILE DEVELOPMENT

Arthur Csertus @ AIESEC IT School 2013, West University – April 24, 2013

WINDOWS PHONE AND WINDOWS 8 DEVELOPMENT

Oana Csertus @ AIESEC IT School 2013, West University – April 17, 2013

Arthur Csertus @ TiMoDev Meetup #1 in 2013, Timisoara Business Center – January 20, 2013

Arthur Csertus @ “Recruited in Timisoara”, DIGI24 News Channel – 5th December 2012

Oana Csertus @ Timisoara Mobile Development Meetup – 10th September 2012

Oana Csertus @ ReBranders, AIESEC – August 2012

Oana Csertus @ UXPerts, Brussels – 11th June 2012

Oana & Arthur @ CodeCamp – 2nd June 2012

Oana Csertus @ RONUA Windows 8 Tour – 19th May 2012

Oana Csertus @ ITFest 2012 by OSUT – 6th May 2012

Arthur Csertus @ ITFest 2012 by OSUT – 5th May 2012

Arthur Csertus @ AIESEC University IT School – 9th April 2012

Oana Csertus @ AIESEC University IT School – 8th April 2012

Oana Csertus @ Microsoft Student Partners Windows Phone Labs – March 2012 – Week 3

Oana Csertus @ Microsoft Student Partners Windows Phone Labs – March 2012 – Week 1

Oana Csertus @ Timisoara Mobile Development Meetup #13 – January 2012

Oana & Arthur @ Geekmeet Hackathon @CoworkTM – 10-11 December 2011

Oana & Arthur @ RONUA 2011 Tour – 18th May 2011

Arthur Csertus @ Timisoara Mobile Development Meetup #2 – 14th February 2011

Oana & Arthur @ Timisoara Mobile Development Meetup #1 – 10th January 2011

Oana & Arthur @ eXcite – Microsoft Student Partners Timisoara – 8th November 2010

Oana & Arthur @ GeekMeet #13 Timisoara – 26th September 2010

Oana & Arthur @ RONUA VS2010 Roadshow – 17th July 2010

Our Recent Work

See Portfolio

Already Decided

Contact Us