TLS & mTLS — Part 2: The iOS Client

Sat, 21 Mar 2026 00:00:00 +0000

Nestor and the developer teach an iPhone to speak TLS. A crow shows up uninvited.

TLS & mTLS — Part 1: Setting Up the Playground

Fri, 20 Mar 2026 00:00:00 +0000

A duck and a developer set up a TLS/mTLS test server to finally understand how certificates work.

About

Mon, 01 Jan 0001 00:00:00 +0000

I’m a Senior iOS Engineer based in Warsaw, Poland, currently working at DaftMobile where I build and maintain iOS apps for Polaroid. My work spans camera companion apps, Bluetooth-connected speakers, and portable printers — all involving complex BLE protocols, OTA firmware updates, and hardware state syncing.

What I do
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Swift Concurrency (async/await, Actors) for safe, performant code
The Composable Architecture (TCA) for predictable state management
Modular architectures using local Swift Package Manager (SPM) packages
BLE communication — GATT protocols, OTA updates, iBeacon, hardware syncing
CI/CD pipelines with GitHub Actions, including test parallelization and automated PR checks
Snapshot & unit testing for high reliability across devices and iOS versions

Beyond iOS
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Networking & security (the TLS/mTLS series on this blog exists for a reason)
Self-hosting (why pay for something you can debug at 2 AM?)
Rust (Swift is just Rust with Arc everywhere, right?)
Quantum computing (wrote two theses on it, still can’t explain it simply)
Linux administration (the terminal is home)
Deep learning (Coursera specialization survivor)

Get in touch
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GitHub: odisei369
LinkedIn: ipiatrenka
Email: ilya.piatrenka@gmail.com

Ilya Piatrenka

TLS & mTLS — Part 2: The iOS Client

TLS & mTLS — Part 1: Setting Up the Playground

About

What I do #

Beyond iOS #

Get in touch #

What I do
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Beyond iOS
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Get in touch
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