Lead Application Reliability Engineer, Citi

Citi

Location:
United States, Irving

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

125760.00 - 188640.00 USD / Year

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Job Description:

The selected candidate will become the key engineer in supporting and advancing the platform used for threat-modeling process in Citi. The responsibilities will cover (among others) maintaining and supporting the threat-modeling application as well as developing relevant tools used throughout the threat-modeling process. The application is comprised of web servers and backend data storage databases and supporting it requires understanding of middleware, database, container, and AWS cloud environment as well as change-control and compliance processes.

Job Responsibility:

Ensure high availability and optimal performance of the threat-modeling application through proactive monitoring, incident management, and efficient troubleshooting
Perform routine and emergency application and infrastructure maintenance, including patching, upgrades, and configuration management, adhering strictly to change control procedures
Conduct root cause analysis (RCA) for production incidents and implement preventative measures to minimize future occurrences
Develop and maintain automation scripts and tools (e.g., using Python, Bash) to streamline operational tasks, improve monitoring, and facilitate efficient deployments
Proactively identify, recommend, and implement enhancements to existing application maintenance practices, operational workflows, and system reliability
Serve as a technology subject matter expert for internal and external stakeholders, contributing to technology domain roadmaps and firm-mandated controls and compliance initiatives
Appropriately assess and mitigate risk in all technical decisions, ensuring compliance with applicable laws, rules, regulations, and internal policies, while escalating and reporting control issues with transparency
Present technical work to senior stakeholders, the team, and other technical teams
Mentor and train junior team members, fostering a culture of knowledge sharing and continuous improvement

Requirements:

6+ years of relevant experience in an Engineering role, preferably in Financial Services or a large, complex, and/or global environment
Experience managing and troubleshooting Linux Operating Systems (e.g., Red Hat Enterprise Linux (RHEL), CentOS, Ubuntu), including System Administration Tasks like User Management, Service Restarts, and File System Checks
Proficiency in Scripting for Automation (e.g., Bash, Python) and with Configuration Management Tools (e.g., Ansible, Puppet, Chef) for system administration and infrastructure automation
Experience with container orchestration using Helm and Kubernetes on platforms like AWS EKS, GCP GKE, or OpenShift
Working knowledge of Relational Databases (e.g., PostgreSQL), including basic querying
Proven track record of maintaining applications and their technology stacks compliant with security and configuration requirements, including successfully passing internal and external security audits by demonstrating secure configuration of applications and infrastructure and ensuring continuous compliance with regulatory standards (e.g., SOX, GDPR) through automated checks and reporting
Demonstrated adherence to strict change control procedures, executing all changes through a formalized change management process (e.g., ITSM, ServiceNow) with proper documentation and approvals
Experience with Ticketing Systems (e.g., Jira, ServiceNow)
Working understanding of Middleware Components (e.g., Nginx, Tomcat or equivalents)
Familiarity with Development Concepts (e.g., Git, CI/CD, Pipelines, SDLC)
Strong communication skills, both written and verbal, for technical and non-technical audiences
Demonstrated analytical and diagnostic skills, with an ability to identify process improvements and best practices
Ability to work independently, manage multiple tasks, take ownership of initiatives, and operate effectively in a matrixed environment under pressure and tight deadlines
Associate Level Certification Required: (Require a Minimum of 1 or more of the following) Kubernetes and Cloud Native Associate (KCNA), Certified Kubernetes Application Developer (CKAD), Certified Kubernetes Administrator (CKA), Kubernetes and Cloud Native Security Associate (KCSA), Red Hat Certified System Administrator or like certification, AWS Certified Developer, AWS Certified SysOps Administrator, CompTIA Cloud+, Google Associate Cloud Engineer or other GCP certification, HashiCorp Certified: Terraform Associate
Bachelor's degree/University degree or equivalent experience

Nice to have:

Associate Cybersecurity Certification: GIAC Security Essentials (GSEC), ISC2 Systems Security Certified Practitioner (SSCP), CompTIA CySA+, Microsoft Certified: Security Operations Analyst Associate
Information Protection Administrator Associate

What we offer:

medical, dental & vision coverage
401(k)
life, accident, and disability insurance
wellness programs
paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays
discretionary and formulaic incentive and retention awards

Additional Information:

Job Posted:
October 18, 2025

Expiration:
November 03, 2025

Employment Type:

Fulltime

Work Type:

Hybrid work

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Lead Application Reliability Engineer