Pavel Kanzelsberger

Senior Software Engineer

Education

Geographical Information Systems

Matej Bel University
Slovakia

Languages

  • Slovak (Native)
  • English (Professional)

Interests

  • Tennis
  • Volleyball / Beach Volleyball
  • Cars
  • 3D Printing

Career Profile

Dynamic Senior Software Engineer with extensive experience in iOS and macOS development, specializing in software architecture, security, and deployment. Proven track record of leading complex projects across the EU and the US, delivering high-quality, secure, and user-centric applications. Expert in cryptography and passwordless authentication technologies, including FIDO2 and WebAuthN. Skilled in transitioning legacy codebases from Objective-C to modern Swift, enhancing performance and maintainability. Proficient in functional programming and composable architecture, with a strong focus on continuous integration and delivery (CI/CD) pipelines. Committed to staying at the forefront of technological advancements to drive innovation and excellence in software solutions.

Experiences

Senior Software Engineer

September 2024 - Present
HYPR, New York

Responsible for SDK and iOS app development, refactoring the architecture, and migrating from Objective-C to modern Swift. Working with FIDO2, WebAuthN, NIST elliptic curve DSA keys, TEEs and so on.

Implemented support for Enterprise Passkeys, including both device-bound and multi-device passkeys, and added Credential Provider support to the iOS HYPR app. More to come, I just started.

Tags: iOS, macOS, Swift, Objective-C, Cryptography, FIDO, Passwordless authentication, CI/CD

Senior Software Engineer

April 2021 - September 2024
Beyond Identity, New York

Implementing the strongest passwordless authentication on the planet. Responsible for iOS and macOS development.

Functional programming, composable architecture, reducers, Swift and a bit of Rust.

Tags: iOS, macOS, Swift, Cryptography, Passwordless authentication, CI/CD

Enterprise Mobility Architect & iOS / Android Developer

January 2015 - August 2020
Johnson Controls, Milwaukee

Managing mobile apps development, deployment, MDM (MobileIron, Intune), developing mobile, desktop apps, backend and frontend.

Developed multiple mobile applications for iOS and Android. Developed service that managed mobile apps deployment through MDM internal AppStore. Backend written in Vapor, frontend in AngularJS, later VueJS. Developed services that allowed iOS apps to be code resigned and published through MDM with internal certificates, bitcode recompilation to convert AppStore apps to MDM and so on.

Tags: iOS, macOS, Swift, Vapor, AngularJS, VueJS, MDM, Code resigning

Associate Director of Information Technology

November 2016 - September 2017
Quintiles IMS (now IQVIA), Durham, North Carolina

Coordinating mobile platform architecture, implementation and strategy. Mentoring and consulting for team of internal and contracted developers, UX designers, cloud and database architects. Operating a continuous improvement service delivery model. Lead Software Engineer at Mobile Centre of Excellence. Development of in-house mobile applications for iOS.

Tags: iOS, Swift, Objective-C, HealthKit

Lead Software Engineer

May 2015 - November 2016
Quintiles, Durham, North Carolina

Mobile app development, iOS, Swift / Objective-C, RedHat's FeedHenry mobile cloud platform integration, Node.js, Oracle, reusable Frameworks development, data tracking.

Tags: iOS, Swift, Objective-C, HealthKit, FeedHenry

Projects

As a lead developer in my own software company, I produced a lot of other applications and frameworks for various customers.

RSA Framework for Volkswagen/Audi group - Custom drop-in framework for iOS applications that transparently handles network requests and data (that is displayed to the user) verification using digital signatures.
SecureChat - iMessage/Signal alternative for private customer. Featured anonymous users without need for any personal information like phone numbers or e-mails. End-to-end encryption and physical verification of public keys. Development included iOS application and backend written in Swift using Vapor frameworks.
GDAX - Cryptocurrency trading application for private customer that used GDAX APIs (now CoinBase). Application allowed realtime overview of selected cryptocurrencies, charts and realtime trading with valuable stats like proper profit calculation.
Calendar - Custom calendar app for iOS for private customer. Worked closely with customer to do custom design, custom features. Application was using iOS EventKit to get access to all calendars and events.
iAttend Porter - iOS application for private customer that allowed tracking of employee presence in the office including other trackings like doctor visits, employee's trips to other company locations (construction). Specialty was an iPad connected to a Biometric device that allowed all employees use their fingerprint to prove their identity.
Wellness Life+ - As a contractor, I developed an iOS health tracking app for Oriflame Sweden.

Skills & Proficiency

Swift, Objective-C, C

iOS, macOS

Cryptography, FIDO, WebAuthN, System programming

Redux architecture, Functional programming

Vapor backend, VueJS frontend, Bootstrap

SQL, NoSQL, Redis, Mongo, Docker