F
Finom
Senior iOS Developer
Skills
SwiftIOSTesting & QAGitLabMachine LearningAIGitHub
2 months ago
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Important information
Contract type:
Permanent
Location:
Germany
Work mode:
Onsite
Published on:
7 August 2026
What they need
- We’re looking for a Senior iOS Engineer who thinks like a product builder — someone who cares deeply about the “why” behind what they’re building, not just the tickets in the backlog
- You’ll be embedded in a cross-functional domain team (Backend, Mobile, ML/AI, QA, Design, and Product) and own the end-to-end development of features that genuinely matter: company accounts and cash flows, banking transactions, card issuance and management, and AI-enabled accounting. You’ll help shape architecture decisions, raise the bar on engineering quality, and mentor the engineers around you
- If you’re energized by working at the intersection of great mobile engineering and real product impact — this is the role
- Design and build new features for our iOS application, used daily by business owners across Europe
- Architect and implement reliable, intuitive solutions for:
- Multi-account cash flow management
- Banking transactions and payments
- Physical and virtual card issuance, activation, and control
- AI-powered accounting automation
- Build polished, responsive UIs using UIKit and SwiftUI
- Take ownership of code quality, performance, and stability — automated testing and thorough code reviews are non-negotiable
- Collaborate closely with Backend, QA, Design, and Product — you’ll be shaping solutions end-to-end, not just implementing specs
- Drive technical decisions within your domain, challenge assumptions when needed, and proactively identify opportunities to build better
- Contribute to CI/CD pipelines, tooling, and mobile best practices across the team- You’re pragmatic and have a proven track record of shipping products that matter. You communicate clearly across disciplines and thrive in a cross-functional environment where everyone is solving the same customer problem together
- Experience with layout development in code, particularly using SnapKit or similar tools
- Confidence with Git / GitLab, including the ability to set up and use GitLab CI/CD
- Strong knowledge of the Swift language and at least 3 years of commercial iOS development
- Practical experience using the VIPER architectural pattern and the Coordinator navigation pattern
- A builder’s mentality — you care about the product, the users, and the outcomes, not just the code
- Deep understanding of OOP, SOLID principles, and design patterns
- Excellent knowledge of UIKit and experience (or a strong desire to develop skills) with SwiftUI
- Ability to write unit and UI tests
- Background in fintech or experience with financial products — you understand the stakes
- Clear, concise communication in English across technical and non-technical audiences
- Solid grasp of mobile security best practices (especially critical in our domain)
- Experience profiling and optimizing UI performance — reducing rendering bottlenecks and achieving smooth 60/120fps on iOS
- Hands-on work with performance tooling: Instruments, XCTest, or similar
- Published apps on the App Store you’re proud of
- An active GitHub profile with code you’re happy to share
- Hands-on experience with AI agents and LLM tools (Claude, Cursor, Copilot, etc.) — setting up agent environments, writing prompts, skills, and behavioral rules
- Understanding of model capabilities and limitations — knowing which model fits which task and how to manage the context window effectively
- Experience with AI-powered IDE tools (Cursor, Windsurf, GitHub Copilot, Claude Code, etc.) — including agent mode, rules files configuration, and integrating AI into the daily development workflow
- Ability to evaluate and verify AI-generated output — using automated tests, linters, and critical review to catch hallucinations and errors
- Awareness of AI security risks — prompt injection, data leakage, and safe handling of untrusted inputs in agentic workflows- Recruiter Interview
- First Technical Interview
- Coding / AI assisted coding interview
- Mobile System Design Interview
- Team Fit Interview (peer interview)
- Offer
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