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Evangelos SpyromiliosES

Evangelos Spyromilios

I help founders fix, polish and publish iOS apps

€200/day
Wolfsburg, DE
3-7 years

Average response time: 2 hours

About Evangelos

I help founders, startups, and small teams get their iOS apps ready for TestFlight and App Store release.


I can help when your app is almost ready, but you are stuck with Xcode, certificates, provisioning profiles, App Store Connect, TestFlight, Apple validation errors, SwiftUI/UIKit bugs, or final UI polish.

I work with native iOS apps in Swift, SwiftUI and UIKit, and I have published my own iOS app, Mnimi, on the App Store.


What I bring to your project:
•End-to-end iOS delivery - from idea and UX flow to App Store submission and updates
•Modern SwiftUI for new features, while safely extending legacy UIKit codebases
•Robust networking - clean REST/JSON integration, offline handling, and error states that don’t confuse users
•AI features in mobile - integrating ChatGPT/OpenAI into existing apps in a safe, user-friendly way
•Stable releases - Git workflows, unit tests, TestFlight builds, and smooth App Store Connect handling

Typical projects I handle:
•Adding new screens or flows to an existing iOS app
•Refactoring and modernising older UIKit code (gradual SwiftUI adoption)
•Integrating external APIs (payment, auth, backend services, AI)
•Building a small app from scratch (MVP) and preparing it for launch

If you need someone who can take ownership of your iOS app, move fast without breaking everything, and communicate clearly in English, I’m a good fit.

Published app:
Mnimi — AI-powered personal memory assistant
  • English

    Native or bilingual

  • Greek

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • CGI DEUTSCHLAND // iOS DEVELOPER
    iOS Developer
    June 2025 - Today (1 year)
    · Built and maintained production iOS features in Swift, UIKit and SwiftUI.
    · Improved UI responsiveness, performance and reliability in a real-world automotive app environment.
    · Integrated REST APIs, EventKit, CoreData and third-party services.
    · Supported stable releases through Git workflows, testing and collaboration with backend teams.
    External API integration CoreData API REST EventKit Swift
  • CGI DEUTSCHLAND // ANDROID DEVELOPER
    Android Developer
    June 2024 - June 2025 (1 year)
    • Temporarily transitioned to Android to deliver cross-platform features
    • Designed responsive UI with XML and improved REST API integrations.
  • CGI DEUTSCHLAND
    JUNIOR IOS DEVELOPER
    June 2023 - June 2024 (1 year)
    • Migrated Objective-C modules to Swift, improving maintainability and reducing bugs by 30%.
    • Collaborated in a 9-developer team using agile workflows, GitHub Actions CI/CD, and Jira contributing to continuous delivery of app updates.

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Education

  • SOFTWARE ENGINEERING
    42 WOLFSBURG
    2023
    SOFTWARE ENGINEERING
  • SHIPPING BUSINESS
    LONDON METROPOLITAN UNIVERSITY
    2011
    SHIPPING BUSINESS

Skill set

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