Johannes Catalin Bolea

Berlin · Germany · +49XXXXXXXXXX ·

(formerly Ionut-Catalin Bolea)

I have a proven track record in application development, my expertise lies in the conceptualization, development, and refinement of innovative iOS applications and engaging games for both mobile and web platforms. My work has consistently resulted in feature enhancements, revenue growth, and the resolution of complex challenges.
I'm not just adept at developing and executing robust testing plans for a range of systems—spanning qualification, integration, and acceptance testing—I'm also skilled in fostering collaborations with professional software development teams and stakeholders to achieve common objectives.
I've left a positive impact across various organizations, thriving in highly competitive environments. My ability to adapt and excel is not confined by industry or company type.
While meeting standards is an accomplishment for some, my true passion lies in surpassing organizational expectations. I strive to exceed the norm, crafting solutions that benefit all parties involved and creating a win-win scenario in every project I undertake.

Experience

Principal iOS Engineer

Your company next!

Principal iOS Engineer with lots of experience bringing teams together towards a common goal, keeping architecture sane, great quality of worksmanship and a happy team!

October 2024 - onwards

Senior iOS Engineer

Verimi - Berlin, DE

Main iOS Engineer responsible for developing and owning Architecture, Development and Delivery of the Verimi Wallet-as-a-Service iOS SDK.

  • I have actively contributed to the furthering of digitalization in Germany.
  • I am the main Senior iOS Engineer responsible for the development, design and architecture of a new development Kit for digital identities management including integration with public services for our top business clients.
  • Product research, security enforcement, user experience and architectural scalability are also part of my daily work.

July 2022 - August 2024

Senior iOS Engineer

Nord Security - Berlin, DE

Main iOS Engineer responsible for developing and owning Research & Innovation topic for the NordPass product.

  • Developed and presented findings and solutions to audiences including senior executives and stakeholders.
  • Documented all concerns and incidents and reported them to a senior supervisor.
  • Worked to support the senior creative staff with day-to-day tasks.

July 2021 - April 2022

(Senior) iOS Engineer

Secret Escapes - Berlin, DE

I contributed actively to the sustained growth of the Secret Escapes iOS app, developing important user-facing features, architectural decisions regarding the structure of the app, and enforced high maintainability and testability of our code base. I have participated actively in the cross-functional development of our team, in regards with process and change management.

Some of my key achievements are:

  • Raised from a small percentage in a single market to a significant percentage overall platform DAUs in 3 markets
  • Increased margin revenue from a negligible percentage to a noticeable percentage from our app users
  • Increased app quality making the AppStore rating turn from 2.2 stars to 4.8 stars

April 2019 - June 2021

iOS Engineer

Bonial International - Berlin, DE

I devise and implement several features within the application, including on-boarding, deals, and shopping list as well as lead and monitor all aspects of IAP testing operations. I am part of an experienced group of developers and engineers responsible for managing and maintaining organisational apps such as KaufDA iOS. I develop and reshaped two applications such as Out of Milk and kaufDA as well as create new features to provide excellent applications within the market through the collaboration with design and product. I manage overall technical operations of the apps by ensuring stability, feasibility, and continuous improvement.

Some of my key milestones including:

  • Increased daily active users by reshaping the Out of Milk application for iOS platform through utilisation of Swift with VIPER architecture and BDD framework for testing.
  • Increased daily active users by implementing new features for the kaufDA application for iOS platform by utilizing both Swift and ObjectiveC

April 2018 - March 2019

Adobe AIR Developer - Mobile

Fyber - Berlin, DE

Responsible for leading the ownership of the Adobe AIR support for the Fyber SDK.
Engineering and driving the Fyber Native Extensions (ANEs) ensuring the highest quality, scalability, reliability, and ease-of-use of the API for publishers.
Resolving issues together with the Technical Services and Backend departments.
Coordinating various tests with the QA department to ensure the robustness of the product.
Getting involved in the Mobile Mediation of our various partners, connecting them to more ad inventory.

November 2015 - November 2017

Junior Client Developer (Frontend Games)

Goodgame Studios - Hamburg, DE

Flash/AIR Games for mobile & web using Starling, Feathers, RobotLegs, with Air Native Extensions.
Developing with IntelliJ IDEA for the engine and game systems using pure ActionScript3 code.
Collaboration with several departments to deliver high-quality and polished features for the games. These were published in several markets and played by hundreds of millions of players.
Leading the architecture and development of various game systems and game components.

January 2014 - August 2015

Senior Flex Developer

XLTEAM - Bucharest, RO

Samsung Smart TV apps with Flash/Flex frontend
Complex Flash/Flex frontend projects for management software
Cross-platform development of bespoke apps using Adobe AIR
Samsung Smart TV Apps (Archive)
DTM Tool (Archive)

July 2013 - January 2014

Lead Developer, Server Engineer

Dataroom - Bucharest, RO

Mobile applications using ObjectiveC, Java Android and AIR platform for customers benefiting from streaming solutions

May 2012 - July 2013

Freelance Developer

on oDesk and on Elance

Freelancing as an Application Developer. Helping clients with their projects involving RIA, Mobile apps, Web applications, Database Development and project consulting.

Late 2009 - Mid 2012

Education

University of "Titu Maiorescu" - Bucharest, RO

Bachelor of Science (Incomplete)
Computer Science - Software Architecture Track

Website (EN)

2013 - 2014

University of Lower Danube - Galati, RO

Bachelor of Engineering (Incomplete)
Systems Engineering - Software Engineering Track

Website (EN)

2011 - 2013

Danube High School - Galati, RO

AP Programming Class (GED/BAC)

Certification in Computer Technology

Website (RO)

2006 - 2010

Skills

Programming Languages & Tools
Workflow
  • Wireframes, Mockups, and Prototypes
  • MVVM or "Clean" or VIPER
  • Responsive design
  • On-Device Testing & Debugging
  • Unit Testing, UI Testing, BDD/TDD
  • Continuous Integration/Deployment (CI/CD)
  • Cross Functional Teams
  • Agile Development & Scrum/Kanban

Interests

Apart from being an iOS enthusiast, I enjoy most of my time exploring. In the winter, I have fun playing board games or any games with friends, expand my music and book library, and have the occasional nature hike. During the warmer months, I enjoy sailing for sport, either in the rivers of Berlin or on the coasts of Baltic and North Sea, mountain trekking, nature hikes and visiting new places.

When forced indoors, I follow a number of sci-fi shows, I read books on various subjects, and I spend a large amount of my free time exploring the latest iOS design and development features.