Middle/Senior iOS developer

Madfish; Remote; GBP 50,000 - 70,000; Full time

Job summary

A tech company is seeking an experienced iOS Developer to work on a VPN Mobile App. The ideal candidate should have over 5 years of iOS development experience and be proficient in Swift. You'll be responsible for developing and maintaining iOS applications, integrating with backend services, and implementing VPN functionalities. This is a remote position, allowing for flexibility while working in a dynamic and innovative environment.

Qualifications

• 5+ years of experience in iOS development.
• Proficient in Swift and iOS SDK.
• Experience with VPN, network, and proxy-based applications.

Responsibilities

• Develop and maintain iOS applications.
• Integrate applications with backend services and third-party SDKs.
• Implement and optimize VPN and secure network functionalities.

Skills

iOS development

Swift

SwiftUI

UIKit

Network protocols

Core Data

REST APIs

CI/CD

Unit and UI tests

Job description

Main requirements

• iOS Developer with experience in Network Extension and PacketTunnelProvider
• Prior experience with VPN and Proxy projects.

Requirements

Position name: iOS Developer for VPN Mobile App
Level: Middle+/Senior

Hard skills requirements (including years):

• 5+ years of experience in iOS development
• Proficient in Swift and iOS SDK
• Experience with SwiftUI and/or UIKit
• Familiarity with architectural patterns (MVVM, VIPER, etc.)
• Experience working with Core Data, REST APIs, push notifications
• Experience developing or integrating VPN, network, and proxy-based applications
• Solid understanding of network protocols, encryption, and secure connection handling
• CI/CD knowledge (e.g., Fastlane, Xcode Cloud)
• Writing unit and UI tests

Soft skills requirements:

• Critical thinking skills
• Being detail-oriented
• Excellent communicator
• Proactivity and ability to solve problems and complete tasks
• Fast and independent learner
• Task-driven and self-motivated

Office/Remote

Remote

Responsibilities:

• Develop and maintain iOS applications
• Participate in designing application architecture
• Integrate applications with backend services and third‑party SDKs
• Implement and optimize VPN, proxy, and secure network functionalities
• Conduct testing, debugging, and performance tuning
• Collaborate with cross-functional teams
• Monitor trends in iOS development, network technologies, and suggest improvements