Senior Mobile Software Engineer

Overview

Strong depth in native iOS development

At Leadtech, we've been redefining digital businesses since 2009, creating innovative online solutions that reach millions of users every month. With a diverse team of over 700 members from 23+ nationalities, we're united by a passion for creativity and collaboration. We specialize in delivering user-centric experiences across web and mobile platforms, where people can connect with our products like never before. We're proud of our global reach and committed to fostering an inclusive workplace where every individual contributes to our shared vision of bringing cutting-edge projects to life. Learn more about our journey and mission on our About Us page!

About The Role

Due to continuous growth, our Mobile Development Team is excited to welcome a Senior Mobile Software Engineer who will own end-to-end delivery of iOS and Android applications using AI tooling as a core part of the workflow, not an afterthought.

This is a full-ownership role. You write the code, make the architectural calls, and ship the product. AI is your force multiplier; Product is your partner.

You'll work directly with Product Owners, Designers and QAs to turn ideas into working software, own both mobile platforms across your projects, and maintain the AI-assisted development environment that makes this model possible.

YOUR MISSION

• Own end-to-end delivery of mobile products: from architecture to App Store and Play Store release
• Write production-quality iOS applications in Swift and SwiftUI
• Own Android delivery on your projects in Kotlin and Jetpack Compose
• Using AI tooling to bridge platform-specific gaps where needed
• Maintain and evolve the AI development stack: rules, skills, agents and workflow automation
• Collaborate closely with Product Owners and Designers to define scope, surface tradeoffs, and keep delivery predictable
• Build and maintain lightweight backend services and integrations when projects require it
• Make independent architectural decisions, with Staff Engineers available as a technical partners

Requirements

• Strong depth in native iOS development
• Deep understanding of Swift, UIKit, SwiftUI, and Apple development best practices
• Solid Android fundamentals: Kotlin, Jetpack Compose, Play Store delivery
• Strong architectural judgment: you design systems that scale and know when simplicity is the right call
• Actively uses AI-assisted development tools (Cursor, Claude-Code, Codex, or equivalent) as a core part of your daily workflow, not occasional use
• Strong communication skills: you work directly with Product, push back when needed, and set realistic expectations

Strong plus

• Product intuition: you think about the user experience, not just the implementation
• Experience building or maintaining internal developer tooling or automation
• Familiarity with lightweight backend development (REST APIs, third-party integrations)
• Experience with CI/CD pipelines and automated testing practices

Benefits

Growth and career development

• At Leadtech, we prioritize your growth. Enjoy a flexible career path with personalized internal training and an annual budget for external learning opportunities

Work-Life balance

• Benefit from a flexible schedule with flextime and the option of working full remote or from our Barcelona office. Enjoy free Friday afternoons with a 7-hour workday, plus a 35-hour workweek in July and August so you can savor summer!

Comprehensive benefits

• Competitive salary, full-time permanent contract, and top-tier private health insurance (including dental and psychological services)
• 25 days of vacation plus your birthday off, with flexible vacation options—no blackout days!

Unique Perks

• If you wish to come, in our office in Barcelona you\'ll find it complete with free coffee, fresh fruit, snacks, a game room, and a rooftop terrace with stunning Mediterranean views

Join us in an environment where you\'re free to innovate, learn, and grow alongside passionate professionals. At Leadtech, you\'ll tackle exciting challenges and be part of a vibrant team dedicated to delivering exceptional user experiences

Equal Employment Opportunity Employer

Leadtech is an Equal Employment Opportunity (EEO) Employer, which means we encourage applications from people with different backgrounds, interests, and personal circumstances. Our team welcomes applicants regardless of their race, gender, age, religion, nationality, sexual orientation, and/or disabilities. All we need is your high energy, skills, and willingness to be part of a great project!

Location

You\'ll have the flexibility to choose whether you\'d like to come to the office every day, from time to time, or work fully remote. We want you to find the best combination for you.

If you prefer to be surrounded with amazing people, our exceptional office is in Barcelona\'s Blue Building, located right on the city\'s seafront. Besides our stunning views, you\'ll enjoy our office perks such as free fruit, snacks, and coffee and you\'ll also be able to take part in our Mario Kart and table tennis competitions.

The personal data you provide will be used to manage your candidacy for the corporate selection processes that fit your profile. If you wish, you can exercise your rights of access, rectification or cancellation by sending a letter to Avenida Litoral, 12-14, 5ta planta, Barcelona 08005, or emailing us at [email protected], including a document that validates your identity.