Teun Martens

iOS Engineer

Hi! I like building apps and getting things done.

Projects

Pelagic

An app for planning your dive holidays. Get inspiration for; find; and plan your next trip. Includes functionality for easily logging dives and keeping track of marine life you've seen and want to see in the future.

COMPANY

Placeholder for now, here I'll add some information on my new company.

ASN Bank

The various Banking apps under the ASN brand (ASN, SNS, RegioBank, BLG Wonen). In addition to the MijnKantoor app.

Turnn MaaS Suite

Mobility as a Service (MaaS) B2B solution. Employers could give their employees mobility budgets, which they could use to best plan their own transport using the app.

Virtual Desktop (HoloLens)

An MRTK Hololens app with accompanying WPF server application for virtualising desktop apps in a virtual workplace.

La Permanence

A complete and interactive cyclist app for finding routes, cafes, and other spots such as monuments for your upcoming ride.

Experience

COMPANY NAME

2026 - now

Founder and engineer

I founded COMPANY so that I can work on passion projects I think should be out there. I already worked on a lot of smaller projects in my spare time as a hobby, but always wanted to bring my ideas to other people as well.

The biggest project at the moment is Pelagic, an app for planning upcoming diving holidays (scuba is a hobby of mine).

EntrepreneurshipFull StackDesigniOSSwiftSwiftUISwift TestingClean ArchitectureNextJS

ASN Bank

2023 - now

iOS Engineer

Worked as an iOS engineer for the banking app. Duties consisted of not only development, but also facilitating sprints within the team and leading releases.

Major projects I held a key role in included the rebranding of the BLG Wonen and RegioBank Brands.

iOSSwiftSwiftUIUIKitXCTestSwift TestingClean ArchitectureRESTRelease CaptainGitlab CI/CDFirebaseScrum facilitator

Turnn

2021 - 2023

Android Developer

Worked as an Android developer on the Turnn app.

Responsibilities consisted of developing a multi-modal public transport app and improving the crash-free percentage of an inherited codebase.

AndroidKotlinJavaXMLComposeFirebaseREST

ICT Group

2020 - 2021

Mixed Reality Developer

Internship consisting of the creation of Virtual Desktop software for the Microsoft Hololens where users could virtualise screens and applications from their desktop through an accompanied desktop server app.

MRTKUnityWPF.NET

Oddessey Solutions

2018 - 2019

iOS Developer

Internship consisting of developing an iOS app where cyclists could find routes and destinations.

iOSSwiftUIKitFirebaseMapkitMVVMREST

Education

Informatica (Software Engineering)

Avans University of Applied Science

At Avans I learned software engineering and it's intricacies. The first half year I specialised in Embedded and Industrial Automation, before ultimately choosing to go further with Software Engineering.

In addition to my SO major, I did my minor in parts I had the most interest in. The largest being Software Architecture. In addition, I also did parts in Entrepreneurship, and 'AI en Maatschappij', which focussed on the way AI's can be better used to aid in business and software.

Scrum Certification

Extensive experience not only as a scrum participant, but also in holding a key role in the planning process for our team. After a major reorganization when de Volksbank rebranded to ASN Bank, we lost the existing scrum facilitation in our team. Even though the basic scrum roles did not exist anymore, they were still needed. So I stepped up and made use of my experience to help my team keep on track.

PSM 1 (TODO)

Cambridge English

Proficient in use of english language inside and outside of an business setting. Achieved a total of 2 certifications in Cambridge English, resulting in a C1 level of English with my CAE according to the EU language qualifications.

CAE English certificate
FCE English certificate

Havo NT / NG

Jacob-Roelands Lyceum
NT / NG direction

Here I first chose the direction I wanted to go with my future carreer. I had always had an interest in computers and technology, so the choice to go with NT/NG came quite naturally. In my graduation year I did a game development project in Unreal Engine.

In addition to the NT/NG direction I chose, I also followed an optional course on Computer Science, and spent time volunteering with the school IT team at their service desk.

Skills

For convenience, here's a list of all the things I've worked with in the past. Details found under projects.

iOS Development
iOSSwiftSwiftUIUIKitSwift Testing &XCTestMapkitClean Architecture
Android Development
AndroidKotlinJavaXMLComposeMVVMClean Architecture
Other skills and tools
Gitlab CI/CDFirebaseNextJSMRTKUnityWPF.NET
General Development
Scrum facilitator (PSM 1)Scrum participantRelease CaptainREST PrinciplesSOLID Principles


Get in contact

Teun Martens


© Teun Martens 2026 at COMPANY


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