Job Summary: The Linux Terminals Engineer will design, develop, and maintain Linux-based payment terminal applications, as well as manage certifications and lead coordination with internal and external teams. Key Responsibilities: 1. Design and develop Linux-based payment terminal applications. 2. Lead payment certifications and coordinate with development teams. 3. Collaborate in an agile, fast-growing environment. **Bold** Bold is a fintech that provides micro-entrepreneurs with a payments solution to accept debit, credit, and e-wallet payments via point-of-sale (POS) terminals and payment links. However, Bold’s vision extends beyond being a payments company—we are actively building a financial and technology services platform for small and medium-sized enterprises (SMEs), complementing our payments and banking offerings with other software solutions aligned with our full value proposition. Bold’s mission is to unlock entrepreneurs’ potential. At Bold, we firmly believe we can help small entrepreneurs grow their businesses by offering tailored, user-friendly, and accessible financial and technological services. At Bold, we define the following values as the pillars of our organizational culture: Mastery, Critical Thinking, Teamwork, Sense of Urgency, Openness, and Customer-Centricity. For more information about Bold, visit our website: https://bold.co **The Role:** As a **Linux Terminals Engineer**, you will be responsible for designing and developing Linux-based payment terminals (POS devices), as well as providing ongoing support and maintenance for existing terminals. We seek professionals with strong experience in C/C\+\+, embedded systems or microcontroller programming expertise, and familiarity with payment technologies such as EMV. Experience with the ISO 8583 standard is a plus but not mandatory. Additionally, you will manage required payment certification processes to ensure devices comply with industry regulations. You will serve as the EMV and financial messaging expert for the entire Terminals team. This team carries high responsibility, as payment terminals are currently our most widely used product, and the experience for our merchants and payers must be seamless, fast, and error-free. You will work closely with Backend, Mobile, DevOps, and QA engineers to ensure standards are met within an agile and Lean environment. **You Will:** * Design, build, and maintain unit and integration tests. * Deliver applications meeting high standards of quality, performance, and security. * Manage technical relationships and compliance with hardware and software vendors associated with payment terminals. * Actively participate in payment certifications with card networks and third parties in general. * Lead and structure coordination among development teams (external and internal) and other third parties involved in the evolution of the terminal platform. * Provide support and maintenance for the current payment terminal platform. * Demonstrate excellent teamwork skills. * Work autonomously in a high-growth startup environment. * Offer perspectives and provide constructive feedback. **Benefits** * + ️ Prepaid medical assistance * Early-stage company equity with high return potential * Indefinite-term employment contract * Competitive salary ‍* Full-time remote work * Learning and growth culture * World-class technologies and processes * Financial support for courses and certifications * ️ Additional days off beyond standard vacation …And much more! * Experience developing in C / C\+\+ * Experience developing applications for embedded systems, microcontrollers, and/or low-performance devices. * Experience developing EMV solutions: contact and contactless payments * Experience applying design patterns, data structures, and concurrency handling * Experience with PCI and OWASP * Experience in leadership, coordination, and third-party management (internal and external). **Desirable** * Experience with LVGL \- Light and Versatile Embedded Graphics Library * Experience with EmvCo and acquirer certifications * Experience with ISO 8583, Base 24, and TLV * Experience managing cryptographic keys: 3DES, AES, RSA * Experience with Linux-based embedded systems * Experience developing in Rust * Experience managing hardware vendors for payment terminals. **Personal Data Processing Authorization** By submitting your application and providing your personal data, and in compliance with applicable personal data protection regulations, you unambiguously and voluntarily authorize the processing of your personal data, in accordance with the purposes outlined in Bold Companies’ Personal Data Processing Policy, available on their websites: https://bold.co and https://boldcf.co. As the Data Subject, you are entitled to the rights established under Law 1581 of 2012 and related complementary or amending regulations, especially the rights to access, update, correct, or request deletion of your data, and to withdraw the authorization you have granted for the use of your Personal Data. To exercise your rights as Data Subject, Bold Companies provide the following channels: For Bold.co and Bold Capital cases: Email: soporte@bold.co, Bold Chat: https://bold.co/, Phone: 60(1\) 508 5776 For Bold CF cases: Email: soporte@boldcf.co, Bold Chat: https://boldcf.co, Phone: 60(1\) 254 3084