Staff Software Engineer

About Félix At Félix, we're building the financial ecosystem for Latin immigrants in the U.S., starting with a revolution in remittances. Our core product is an AI-powered chatbot built on WhatsApp, allowing our users to send money home as easily as sending a text message. We leverage cutting-edge technology like AI, blockchain, and stable coins to make cross-border payments faster, more affordable, and more accessible than ever before. We are a hyper-growth Series B company, backed by over $100 million in funding from top-tier global investors, including QED, Castle Island, Switch Ventures, HTwenty, Monashees, and General Catalyst Customer Value Fund. This isn't just about the numbers; it's a testament to the trust our investors have in our vision and our team. Additionally, the Félix founders were selected as “Endeavour Entrepreneurs” and were recipients of the CrossTech Fintech Startups Award. We are a group of extremely talented and dedicated high-performers, united by our shared obsession with a single goal: empowering our customers. We are all owners of Félix, driven by a bias for action and a true experimentation spirit to get shit done with urgency and focus. Joining Félix means you will be part of a team building a legacy, a company that will outlive us all. This is a rare opportunity to apply your skills to a deeply meaningful mission—serving a community that has been underserved for too long. We are a team that is fiercely loyal to each other, where radical transparency and constructive feedback are how we grow and push for excellence. We are bold, we care less about what others are doing, and more about creating sustainable value and a product that truly makes our users\' lives better. We are building the future, today. About The Role Join Félix as a Staff Software Engineer on our dedicated Fraud team, where you\'ll play a pivotal role in building and enhancing our defenses against financial crime. This position demands a blend of deep technical expertise and a keen understanding of fraud typologies. You will be responsible for architecting and implementing advanced, data-driven systems that proactively identify and mitigate risks across our platform. Your leadership will be crucial in shaping our technical roadmap, fostering innovation, and ensuring our solutions are not only highly effective but also scalable and maintainable in a rapidly evolving threat landscape. This role is open to all candidates in Latin America. What You Bring • A passion for understanding fraud trends and mitigating risk while protecting the customer experience. • A builder’s mindset, ready to scale processes in a start-up environment. • Energy and enthusiasm to make an impact in a fast-paced, collaborative role. If you are a great fit for this role, Félix will provide you with a wealth of development opportunities in the Fraud Prevention space, working with both U.S. and Latin American countries and as members of MRC, the leading global non-profit membership association for eCommerce payments and fraud prevention professionals. Responsibilities Lead Risk Platform Development: Drive the entire technology and platform development for the company’s risk needs, ensuring a functionally rich, reliable, and high-performance. Own Architecture & Strategy: Take full ownership of the Risk platform\'s technology and architecture, collaborating closely with Engineering teams and stakeholders. Innovate & Elevate Solutions: Continuously challenge the status quo, setting a high bar to deliver superior technical solutions that address all risk requirements. Strategic Partnership: Work closely with leaders in Risk Product and Risk & Compliance to gain deep business understanding and collaboratively develop effective technical solutions. Provide guidance on engineering principles and best practices to ensure productivity, quality, and timely delivery. Ensure Operational Excellence: Guarantee reliable production execution of the Risk Platform with robust observability and clear visibility to partners. Leverage Data & AI: Partner with Data, AI, and other Risk leaders to effectively leverage the Data Platform and AI Platform for critical risk needs. Seamless Integration: Collaborate with solutions architecture, product, and engineering teams to ensure the Risk Platform is integrated across products and systems. Shape Technical Vision: Drive the technical vision and strategy for Risk, balancing immediate needs with long-term objectives. Foster Technical Excellence & Culture: Set a high technical bar, provide mentorship, and cultivate an inclusive, productive Risk group that attracts top talent. Strengthen Security & Reliability: Partner with security and SRE to improve security, meet SLOs, and manage error budgets. Requirements 3+ years in Fraud Prevention : Direct, hands-on experience in fraud prevention, detection, or mitigation within fintech, financial services, or a similar industry. You understand fraud schemes, attack vectors, and best practices for managing fraud risk. 10+ years in Software Development : A senior-level engineer with a proven track record of designing, developing, and deploying software at scale. Risk Platform Architect : Extensive experience in the risk domain, including architecture and development of Risk platforms. Strong grasp of Data, ML, and AI and how to apply these technologies to solve risk challenges. System Design & Scale : Designing distributed systems, handling high-throughput real-time processing, and architecting for scale (millions of transactions/day). Sharp Tech Skills : Ability to analyze large datasets, resolve complex problems, proficient in Python and SQL; experience with ML frameworks, real-time databases, and fraud tools (FICO Falcon, SAS) is a plus; knowledge of data visualization tools is a plus. Regulatory Compliance : Understanding of PCI DSS and SOX compliance requirements. Leadership Expectations : Set high technical standards, mentor, and lead architectural decisions in a rapidly evolving environment. Natural Investigator : Curious to uncover core causes of fraud and craft proactive prevention strategies. Effective Collaborator : Strong communication to partner with cross-functional teams and influence decisions. Self-Driven & Accountable : Self-starter with good judgment and initiative in ambiguity. Flexible & Responsive : Adaptable to changing priorities and able to respond to critical fraud risks, occasionally outside standard hours. Current Industry Knowledge : Deep understanding of fraud detection tools, ML models, and best practices, including familiarity with fraud modeling or behavioral analytics. Academic Foundation : Bachelor\'s degree in Computer Science or related field; Master’s or PhD is a plus. Proficiency in English : Upper-Intermediate level or higher required. These requisites may be met by equivalent competencies in any of the above. What We Offer Initial stock options grant Annual performance bonus Health, dental, and vision plans Remote work environment with offices in Miami and Mexico City; hybrid model available Continuous learning opportunities Unlimited PTO Paid parental leave Growth opportunities in a dynamic entrepreneurial environment Equal Opportunity Employer At Félix, we are committed to providing equal employment opportunities to all qualified applicants without regard to race, religion, nationality, sex, sexual orientation, gender identity, age, or disability. This policy covers all terms and conditions of employment. Want to learn more about our privacy practices? Check out our Privacy Policy. Seniorities & Employment Seniority level: Mid-Senior level Employment type: Full-time Job function & Industries: Financial Services and Technology, Information and Media Referrals increase your chances of interviewing at Félix by 2x #J-18808-Ljbffr