Senior Full-Stack Engineer - ATM… at Citigroup · Florence

Senior Full-Stack Engineer - ATM Infrastructure Location: Florence Kentucky United States About Citi: Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Citi provides consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management. As a bank with a brain and a soul, Citi creates economic value that is systemically responsible and in our clients’ best interests. As a financial institution that touches every region of the world and every sector that shapes your daily life, our Operations & Technology teams are charged with a mission that rivals any large tech company. Our technology solutions are the foundations of everything we do from keeping the bank safe, managing global resources, and providing the technical tools our workers need to be successful to designing our digital architecture and ensuring our platforms provide a first-class customer experience. We reimagine client and partner experiences to deliver excellence through secure, reliable, and efficient services. Our commitment to diversity includes a workforce that represents the clients we serve from all walks of life, backgrounds, and origins. We foster an environment where the best people want to work. We value and demand respect for others, promote individuals based on merit, and ensure opportunities for personal development are widely available to all. Ideal candidates are innovators with well-rounded backgrounds who bring their authentic selves to work and complement our culture of delivering results with pride. If you are a problem solver who seeks passion in your work, come join us. We’ll enable growth and progress together. The Role: Citi is seeking a Senior Full-Stack Engineer - ATM Infrastructure within the ATM Technology team, responsible for the design, development, and lifecycle management of enterprise-grade ATM applications and supporting infrastructure. The engineer will play a dual role contributing hands-on technical delivery while also providing leadership and oversight of lab environments, connectivity management, and fleet expansion initiatives. This position sits at the intersection of financial services technology and distributed systems engineering, where alignment with architectural standards and cross-team collaboration are essential. Professionals in this space will find the role reflective of senior engineering standards practiced across leading financial institutions and enterprise technology firms. Responsibilities Design, develop, and implement robust, scalable ATM applications, contributing across the full software development lifecycle from conceptualization through deployment and maintenance. Build responsive and intuitive user interfaces using Angular, and develop back-end services and APIs using Java. Manage and review ATM Channel Firewall Rules and govern all network connectivity ensuring security and operational continuity. Oversee all lab functions and activity within designated facilities, including lab asset management, process governance, and continuous oversight of global lab environments across NAM and India. Lead efforts to expand the ATM fleet footprint, including the integration and testing of new hardware vendors. Collaborate closely with multiple development teams to ensure seamless integration and alignment with overall architectural goals and enterprise standards. Provide technical leadership and mentorship, fostering a culture of engineering best practices, innovation, and continuous improvement. Contribute to the evaluation, planning, and execution of testing and development activities within lab environments supporting the ATM channel. Qualifications 6+ years' software or network engineering experience with demonstrable expertise in ATM application development or comparable enterprise financial technology platforms. Working knowledge in Java programming. Proven experience managing network firewall rules, connectivity configurations, or infrastructure-level security controls within enterprise or financial services environments. Hands-on experience with lab environment management, including asset tracking, process governance, and coordination across geographically distributed facilities. Demonstrated ability to work on complex, high-availability enterprise applications with a focus on reliability, scalability, and security. Experience with ATM hardware ecosystems or financial services channel technology, including knowledge of vendor integration (e.g., hardware manufacturers and ATM fleet systems). Demonstrated leadership capabilities, including the ability to mentor engineers, drive technical initiatives, and influence cross-functional development teams. Excellent communication and interpersonal skills, with the ability to articulate complex technical concepts to diverse stakeholders across organizational levels. Education Bachelor's degree in relates field or equivalent relevant experience. This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required. ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Primary Location: Florence Kentucky United States ------------------------------------------------------ Primary Location Full Time Salary Range: $117,440.00 - $176,160.00 In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire. ------------------------------------------------------ Most Relevant Skills Please see the requirements listed above. ------------------------------------------------------ Other Relevant Skills For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ Anticipated Posting Close Date: May 12, 2026 ------------------------------------------------------ Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi. View Citi’s EEO Policy Statement and the Know Your Rights poster.