Live Athens transit
Syrmos
Your next Athens train, instantly.
- Live metro, tram and suburban rail departures
- Offline-first, works underground
- iOS, Android and the web. Greek and English.
iOS Engineer
Apple-platform at Plum.
Syrmos for Athens.
Conservatio for heritage.
Kujto, open source.
iOS Engineer in Athens. Shipping Plum's core iOS app with Swift, SwiftUI and The Composable Architecture. Building Syrmos for the Athens metro, tram and suburban rail, and Conservatio for cultural heritage conservators, across iOS, Android and the web. Open sourcing Kujto, a bilingual AI memory framework for codebases.
Featured products
Four products, built end to end.
Syrmos ships live Athens transit across iOS, Android and the web. Kujto Studio is the local memory layer for AI coding agents, on the Mac App Store and Ko-fi. Glint and Lidhra are two Rust and Tauri apps now shipping: a liquid-glass menu-bar Git client and a fast, private, native download manager.
Local memory for AI agents
Kujto
Stop briefing your AI agent on the same codebase every day.
- Local-first Mac app that reads your repo's memory and shows the rules that apply
- One engine, five surfaces: Mac app, Xcode, VS Code / Cursor and CLI
- On the Mac App Store and Ko-fi. CLI stays free and open source, MIT.
Git in your menu bar
Glint
A glint of Git, one click away.
- Menu-bar Git client built on Tauri and Rust, not Electron
- Real liquid glass from native macOS vibrancy, with swappable themes
- Tiny system-webview footprint. Megabytes, not hundreds.
Native download manager
Lidhra
Link what matters.
- One Rust core, each platform's native design language
- Debrid-powered: the cloud torrents, your device only does encrypted HTTPS
- Tiny and private. No accounts, no telemetry, App Store ready.
iOS Engineer
Plum
Smart money management app helping hundreds of thousands of users save, invest, and grow their wealth intelligently.
iOSSwiftSwiftUITCA
iOS Engineer
mblty
Flagship e-mobility app of Tank & Rast, Germany's leading motorway service operator. Fast EV charging with in-app rewards.
iOSwatchOSSwiftSwiftUIUIKitApp Clips
Creator & Developer
PromptBar
Menu-bar Mac app that keeps ChatGPT, Claude, Gemini, Perplexity, your own OpenAI-compatible endpoint and local Llama models one keystroke away. Bring your own API key, run cloud and local side by side, and keep every chat inside a single distraction-free window.
macOSSwiftSwiftUI
Selected work
More builds across transit, heritage, fintech, mobility, utilities and developer tooling.
A wider set of shipped products spanning Apple-platform work, Kotlin Multiplatform apps and open-source tooling.
imjaDNS
Creator & Developer
Cross-platform DNS configuration app for Apple devices. Manage custom DNS servers across iPhone, iPad and Mac, with speed tests and a live protection state.
SwiftSwiftUITCA
Open project
HEIL-App
iOS Engineer
Enterprise iOS application for HEIL GmbH. Built with modern architecture patterns and scalable codebase.
SwiftUIKitMVVM
Open project
My DEDDiE App
Lead iOS Engineer
Official app for HEDNO (Hellenic Electricity Distribution Network Operator). Features real-time green energy tracking and carbon metrics.
SwiftUIKitCore Data
Open project
Public.gr
Frontend Developer
Greece's leading electronics retailer. Enhanced product pages with structured data and SEO improvements.
AngularTypeScriptCSS
Open project
MediaMarkt.gr
Frontend Developer
Major European electronics retailer. Built form validations, partner review integrations, and frontend features.
AngularTypeScriptCSS
Open project
TranquiMind
Creator & Developer
Mental wellness iOS app developed as part of a Master's thesis. Award-winning project recognized at CoNeCo 2024.
SwiftSwiftUI
Open project
About
Apple-platform engineering at depth, paired with a multiplatform product slate spanning Athens transit, cultural heritage and developer tooling.
I'm an iOS Engineer based in Athens. At Plum Fintech I work in the Engagement Team, owning user-facing features in the core iOS app with SwiftUI and The Composable Architecture, from system design through release and post-launch iteration. In parallel I design, build and ship products of my own across iOS, Android and the web. Syrmos delivers your next Athens train instantly: live metro, tram and suburban rail departures with offline schedules and zero tracking, built for daily commuters. Conservatio is a professional documentation platform for cultural heritage, used by conservators, museums, galleries, archaeological teams and heritage authorities to replace Word templates and scattered photos with structured condition reports, controlled vocabulary and branded PDF exports. Kujto is a versioned, bilingual open-source AI memory framework that keeps Swift conventions and iOS architecture decisions portable across Claude, Codex, Gemini, Copilot and Cursor. PromptBar and imjaDNS round out the personal stack on macOS and iPadOS. The thread is the same across all of them: taste for small, modular systems, an ownership mindset, and code that ages well.
SwiftUIUIKitThe Composable ArchitectureClean architectureRelease qualityCross-functional delivery
Athens, GR
Based in
5+
Years building for iOS
12+
Apps shipped
MEng + MSc
Education
Recommendations
How teammates, reports, and technical partners describe working with Petros.
A set of LinkedIn recommendations focused on delivery reliability, engineering judgment, communication, and team impact across product work.
Konstantina Grammatopoulou
Technology Consultant | CRM & Digital Solutions | 8x Salesforce Certified
January 29, 2026 · Worked with Petros on different teams
I had the pleasure to work with Petros during his time at Ebiscon. He brings strong technical expertise to the table, paired with a thoughtful approach to building reliable, user-focused iOS applications. Beyond his technical skills, Petros is proactive and always willing to step in to help, whether that means solving a tricky technical problem or supporting a teammate. His professionalism, empathy, and team-first mindset make him a valuable asset to any organization.
I had the opportunity to work with Petros for a full year on our iOS team, where we collaborated closely on several product features and architectural improvements. In our day-to-day work, he communicated openly, gave realistic estimations, and took responsibility for delivering his features reliably. I really appreciated how he used his knowledge to challenge assumptions in a constructive way and how his clear technical reasoning often helped us find better solutions. His structured approach and thoughtful code reviews genuinely strengthened our overall quality. Petros is not only a skilled and dependable iOS developer, but also someone I genuinely enjoyed working with, and I'm grateful that I gained a good friend along the way.
Manolis Spiliotopoulos
Backend .net developer @ ebiscon
November 7, 2025 · Worked with Petros on the same team
Petros is a capable iOS lead who manages teams with clarity and purpose. He combines strong technical skill with practical decision-making to keep projects on track.
I've worked with Petros in a number of challenging projects and I can say with certainty that he is among the best people I've worked with in my career. Petros can take initiative and break down complex problems into digestible chunks that he then implements while taking edge cases into account. He also coordinates efficiently with people from different backgrounds and suggests improvements to new and existing features. Apart from his technical prowess, Petros is a great person, easygoing, and has a great sense of humor. He would make a great addition to any team.
Stefanos Raptis
Senior Android Engineer at Scytales
December 23, 2024 · Worked with Petros on the same team
It has been a pleasure working with Petros, an engineer who is very passionate about his craft. Highly autonomous and self-driven, Petros is a dependable team member who makes collaboration seamless. His communication is clear and concise, ensuring effective exchanges within the team. Petros's curiosity and determination to understand how things work make him an invaluable problem solver who always digs deeper. Beyond his professional skills, his sense of humor and ability to engage in everyday conversations add a personal touch, making him fun to work with. I recommend Petros as a talented and well-rounded professional.
Michael Sfakianos
Technical Delivery Manager at Netcompany
December 13, 2024 · Managed Petros directly
As the director of the technical department of AppArt, I've had the opportunity to work with Petros and evaluate his crucial role in developing the iOS version of some of the company's most dominant mobile apps. Petros has shown that he is capable of delivering high-quality software, but has also shown precious communication skills as he managed to establish a very fruitful relationship with our customers. As a result, his contribution to every mobile app version we released was critical. As an added perk, I understand that Petros really loves the job that he is doing. His continuous interest in personal and open-source projects indicates a mindset that will certainly benefit every company he works for.
Resume
Shipping systems that stay fast, modular and readable as products scale.
I build Apple-platform products that feel fast, clear and dependable, with a bias for small, well-named systems over clever ones. At Plum Fintech I work in the Engagement Team on Plum's core iOS app, shipping features for the people who use Plum every day to save and invest with less friction. The stack is Swift, SwiftUI, UIKit and The Composable Architecture, with MVVM, MVP, VIPER and pragmatic MVC where they fit better.
SwiftJavascriptTypescriptAngularSwiftUIUIKitAndroid Jetpack
Independent work
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