Lead Mobile Engineer

Mlabs; Baruth/Mark; Remote; EUR 125,000 - 196,000; Full time

Benefits offered by this job

Remote-first

Flexible hours

Office access optional

Career growth

Job summary

MLabs is seeking a Lead Mobile Engineer to drive the user-facing mobile platform in a remote-first environment. You will architect, build, and refine iOS and Android apps using React Native, while also shaping SDKs and developer tools for scalable integrations.

You will own end-to-end delivery, ensure bank-grade security, and mentor a growing team. Fintech/Web3 exposure and strong UX instincts are highly valued.

Qualifications

• 8+ years of professional experience in mobile software engineering and leading technical projects.
• Expert-level proficiency in React Native, with solid native iOS/Android knowledge (Swift, Kotlin).
• Experience shipping production-grade mobile apps in fintech/Web3/onchain domains with focus on security and reliability.

Responsibilities

• Lead end-to-end design, architecture, and development of iOS and Android apps.
• Own features through the full SDLC from concept to launch and iteration.
• Refine SDKs and cross-platform frameworks for scalable integration.
• Implement fintech-grade UX and bank-grade security for mobile wallets.
• Set and enforce high engineering standards for performance and security.
• Collaborate with product and design teams to rapidly deliver features.
• Document code and mentor team members.

Skills

React Native

Swift

Kotlin

Mobile development

SDK architecture

Security protocols

UX design

Cross-functional collaboration

Job description

Location and Compensation

Location: US or EU (remote-first, office optional) | Full-time

Compensation: $140K - $220K

Job Overview

We are hiring on behalf of our client, a leading organization in the fintech and blockchain space is seeking a Lead Mobile Engineer to drive the user-facing side of its mobile platform. In this role, the selected candidate will be responsible for designing and building high-performance iOS and Android applications, refining cross-platform frameworks, and crafting intuitive, secure, and trustworthy user interfaces. This position also involves shaping software development kits (SDKs) and developer tools that enhance the core mobile application ecosystem. The ideal candidate possesses deep expertise in mobile development (specifically React Native), strong native iOS/Android knowledge, and sharp UX instincts. Experience shipping production-grade applications within the fintech or Web3/onchain domain is highly preferred, alongside a strong dedication to clean architecture, security, and reliability. The role requires end-to-end ownership of projects, transforming complex requirements into seamless, reliable workflows for both administrators and end-users.

Key Responsibilities

• Lead the end-to-end design, architecture, and development of iOS and Android mobile applications.
• Own product features through every stage of the software development lifecycle, from initial concept to launch and continuous iteration.
• Refine SDKs and cross-platform frameworks to support smooth, scalable integrations.
• Implement fintech-grade user experience (UX) and bank-grade security protocols for mobile wallets.
• Establish and enforce high engineering standards for performance, code quality, security, and mobile architecture.
• Partner closely with product management and design teams to rapidly iterate and deliver user-centric features.
• Maintain clear technical documentation, perform comprehensive code reviews, and mentor team members.

Requirements

• 8+ years of professional experience in mobile software engineering, including a proven track record of leading technical projects.
• Expert-level proficiency in React Native, with solid experience or knowledge in native mobile development (Swift, Kotlin, etc.).
• Demonstrated expertise in cross-platform development paradigms and SDK architecture.
• Hands‑on experience implementing WebAuthn, passkeys, and secure authentication protocols.
• Proven track record of shipping successful, production-ready mobile applications within the fintech or blockchain/onchain sectors.
• Strong product intuition, keen attention to UX details, and a high degree of reliability.
• Excellent communication skills with the ability to collaborate effectively within fast‑paced, cross‑functional teams.

Benefits

• Competitive compensation package.
• Remote‑first working environment with flexible hours and optional office access.
• Opportunities for career growth and leadership within a high‑growth technology sector.

Commitment to Equality and Accessibility

At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all.