DESCRIPTION

At Bluefin, we thrive in a dynamic and fast-paced environment where innovation and leadership are at the forefront of everything we do. Join us in revolutionizing data security within the integrated payments industry, as we protect over 35,000 companies across 59 countries with our cutting-edge encryption and tokenization technologies. Our collaborative culture empowers you to take initiative and make impactful contributions, while our commitment to professional growth ensures you have the tools and opportunities to excel. Embrace the challenge of working in a vibrant atmosphere that values agility and leadership, and be part of our mission to create secure, frictionless experiences for businesses and their customers. If you’re ready to drive change and make a difference, we invite you to embark on this exciting journey with us!
We are seeking an experienced and security-focused Payment Systems Fullstack Developer to join our product team building Android-based payment applications. You will primarily work on the development and maintenance of our Android POS terminal software, occasionally contributing to auxiliary tools and apps that support our core products. Security is at the heart of what we do—we adhere to strict standards like PCI DSS and P2PE, and you’ll play a key role in upholding them. This role reports to the Team Lead, Terminal Development.

SKILLS AND QUALIFICATIONS

To perform this job successfully, the individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions:

• Proficiency in Java and Android SDK is essential, with the ability to develop, maintain, and optimize Android applications.
• Knowledge of EMV, contactless payments, or terminal-level SDKs is preferred, particularly for those with experience in payment processing or POS integrations.
• A solid understanding of Cryptography is required, including implementing encryption, key management, and secure data storage in accordance with industry best practices.
• Familiarity with Kotlin is preferred, as it is increasingly used for modern Android development.
• Understanding of Lua is preferred, particularly in scripting for embedded systems or application customization.

ESSENTIAL DUTIES AND RESPONSIBILITIES

• Develop and maintain secure and scalable Android POS applications.
• Implement cryptographic protocols, secure communication, and secure data storage.
• Collaborate with QA, security, and backend teams for full-stack alignment.
• Ensure full compliance with PCI, P2PE, and other relevant standards.
• Design, build, and troubleshoot supporting applications and backend services.
• Integrate with hardware-level APIs and embedded systems where needed.
• Write clean, maintainable, well-documented, and testable code.

To perform this job successfully, the individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions:

• Proficiency in Java and Android SDK is essential, with the ability to develop, maintain, and optimize Android applications.
• Knowledge of EMV, contactless payments, or terminal-level SDKs is preferred, particularly for those with experience in payment processing or POS integrations.
• A solid understanding of Cryptography is required, including implementing encryption, key management, and secure data storage in accordance with industry best practices.
• Familiarity with Kotlin is preferred, as it is increasingly used for modern Android development.
• Understanding of Lua is preferred, particularly in scripting for embedded systems or application customization