Mobile Developer Engineer (Kotlin/Swift)

Location: Sant Joan Despí (Barcelona), Spain; hybrid work with 3 days of remote work.

Company

hirify.global is an international security technology group with over 14,000 employees in 40 countries, developing solutions across digital security, financial platforms, currency technology, connectivity, and IoT.

What you will do

• Design, develop, and maintain native mobile SDKs and libraries using Kotlin and/or Swift.
• Develop native Android and iOS applications showcasing the SDKs.
• Deliver features from ideation through deployment while maintaining security and compliance.
• Integrate secure elements, NFC, RESTful APIs, and collaborate with backend teams.
• Participate in code reviews, pair programming, TDD, E2E testing, Scrum workflows, and documentation.
• Set up, troubleshoot, and optimize CI/CD tools and pipelines for quality and speed.

Requirements

• Proficiency in native Android development with Kotlin and/or native iOS development with Swift.
• Willingness to assist across both mobile platforms when needed.
• Experience with mobile development tooling, including IDEs, test frameworks, and emulators.
• Ability to write secure, test-driven code and collaborate with teammates.
• Ability to work with secure coding practices, code reviews, E2E testing, CI/CD, and feature delivery.

Nice to have

• Cross-platform development experience, preferably with Flutter.
• Familiarity with NFC, BLE, mobile libraries, or native code integration.
• Understanding of Docker, Figma-based UI implementation, Rust, smart cards, secure elements, or byte-level debugging of binary protocols.

Culture & Benefits

• People-oriented, diverse, international environment with flat hierarchies and an LGBT+ friendly equal-opportunity culture.
• Collaboration with global stakeholders and participation in a digital-currency lighthouse project.
• Continuous training, coaching, and talent development programs.
• Flexible compensation, including transport tickets, training, and private insurance.
• Flexible working hours: Monday–Thursday 8:30–17:30 and Friday 8:30–15:30, with 3 remote-work days.
• On-site breakfast and lunch canteen with multiple menu options.

Hiring process

• First 30 days include orientation, security training, development-environment setup, local builds, architecture and API review, and shadowing senior developers.
• Days 31–60 include secure-coding workshops, TDD feature work, pair programming, E2E testing, CI/CD contributions, ownership of a ticket, and a security code review.
• Days 61–90 include autonomous feature delivery, fixing a medium-level security issue, leading a security retrospective or sharing session, optimizing CI/CD, and mentoring newcomers.