Senior Mobile Software Engineer

Leadtech Group builds and scales digital products used by millions of people worldwide
. With
over 18 years of experience
, we bring together multidisciplinary teams to turn ideas into meaningful, high-impact solutions.

Within the group,
MAU by Leadtech focuses on subscription-based apps and digital products. It builds on the expertise, technology and product mindset developed at Leadtech, combining proven experience with a strong focus on user value and long-term growth.

Across both brands, we share the same approach: a deep commitment to understanding people and creating experiences that make a difference — for our users and for our teams.

We work asa remote-first, international team, where flexibility and collaboration shape how we build, learn and move forward together. Our environment brings together experienced professionals across product, tech, data and design, all driven by curiosity, ownership and continuous improvement.

If you’re looking to contribute to products with real impact and grow alongside a team that values how things are built as much as what is built, we’d love to meet you.

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.

• 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

• Strong depth in native iOS development
• Deep understanding of Swift, UIKit, Swift
  
  UI, 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

• 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

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…