At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe.
We are seeking a Senior iOS Developer to design, build, and maintain secure, scalable, and resilient mobile applications for a global financial technology platform. This role will focus on end-to-end feature delivery, adherence to secure coding practices, and continuous improvement of app performance and user experience.
You will work closely with Product, UX, and API teams, contributing to technical design, implementation, CI/CD optimization, and knowledge sharing within a collaborative Agile environment.
Sounds like your kind of challenge?
What you’ll be doing
- Deliver end-to-end iOS features, including discovery, technical design, coding, testing, release readiness, and early-life support
- Develop and maintain native iOS components using Swift, applying modern design patterns (MVVM, Clean Architecture, modularisation)
- Collaborate with Product, UX, and Backend/API teams to deliver user-centric and technically robust solutions
- Conduct code reviews, enforce engineering best practices, and drive test automation for reliability and maintainability
- Implement secure-by-design principles for sensitive data storage, authentication workflows, and banking security controls
- Monitor and improve app performance and stability (crash reduction, load time optimization, responsiveness)
- Contribute to CI/CD improvement initiatives: build automation, dependency scanning, quality gates, and security compliance
- Actively mentor junior team members through pairing, reviews, and coaching while promoting knowledge sharing
- Produce and maintain technical documentation, including architecture decisions and operational runbooks
- Manage dependencies across time zones and teams, ensuring timely delivery and risk mitigation
- Drive a continuous improvement mindset, balancing delivery speed with quality and compliance requirements
Note: Detailed project information will be shared during the recruitment process.
What you get in return
- Flexible cooperation model – choose the form that suits you best
(B2B, employment contract, etc.) - Hybrid work setup – remote days available depending on the client’s arrangements – 2 days a week from the office in Kraków
- Collaborative team culture – work alongside experienced professionals eager to share knowledge
- Continuous development – access to training platforms and growth opportunities
- Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
- High quality equipment – laptop and essential software provided
Who we’re looking for
- Strong professional experience in native iOS development for production-grade apps
- Expert in Swift programming and solid understanding of iOS fundamentals: app lifecycle, concurrency, background execution
- Hands-on experience with UI frameworks (e.g., SwiftUI or UIKit), navigation architectures, and data persistence (e.g., Core Data)
- Skilled in integration patterns: REST APIs, error handling strategies, resilience, and offline-first considerations
- Proven track record of automated testing (XCTest, XCUITest, mocks/stubs for unit and UI testing)
- Strong Git proficiency and experience in Agile (Scrum/Kanban) environments
- In-depth awareness of mobile security practices in regulated industries (e.g., secure storage, encryption principles)
- Familiarity with dependency injection, Swift Concurrency (async/await), and reactive programming (Combine / RxSwift)
- Experience with observability tooling (crash analytics, performance monitoring) and feature flagging
- Accessibility and inclusive design knowledge
- Experience in financial services or highly regulated environments is a strong advantage
Nice to Have
- Familiarity with experimentation frameworks and A/B testing on mobile
- Knowledge of MDM, App Config, or enterprise-scale distribution models
- Contribution to open-source projects or active engagement in developer communities
Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.
