• The Senior Mainframe Systems Programmer provides support for on-going projects that require the installation, testing, and implementation of new operating systems and other 'system' software. • Includes: Maintenance and debugging of systems software. • Coordination with other technical teams (CICS, Database, Network, Hardware/Storage, etc) in accomplishing assigned tasks. • Research and evaluation of new software and hardware products. • Assisting team members and other areas with technical questions and problem resolution. • Monitoring and tuning of systems software. • Functional knowledge, use of z/OS components and detailed knowledge of support products such as tape management, scheduling, security, monitoring systems, and other z/OS supporting systems software.

• Desenvolvimento e manutenção de sistemas utilizando principalmente SQL e PL/SQL no banco de dados Oracle. • Modelagem e otimização de bancos de dados relacionais. • Desenvolvimento/manutenção eventual de aplicações web (backend, webservices), preferencialmente utilizando linguagem Java. • Suporte técnico para identificação e resolução de problemas em sistemas existentes.

Department: Technology Our Company Promise We are committed to provide our Employees a stable work environment with equal opportunity for learning and personal growth. Creativity and innovation are encouraged for improving the effectiveness of Southwest Airlines. Above all, Employees will be provided the same concern, respect, and caring attitude within the organization that they are expected to share externally with every Southwest Customer. Job Description: The Senior System Engineer guides and mentors others in building, enhancing, and implementing integrated systems that meet Customer and organizational needs. They manage production issue resolution and lead the daily operation and long‑term strategy of Southwest’s Enterprise Domain Name System environment on‑prem and in the cloud. The Senior System Engineer has technical and problem-solving skills and is ready to support Southwest’s reliability, efficiency, and overall operational excellence. Additional Details - This role is offered as a remote workplace position, which may require travel for trainings, meetings, conferences, etc. Outside of those required visits, the majority of your working time may be spent in an approved remote location, away from our Corporate Campus. Please note, while this is a remote position, there is limited group of states or localities ineligible for Employees to regularly perform their work off-site. Those ineligible locations are: Alaska, Delaware, New Jersey, North Dakota, South Dakota, Vermont, West Virginia, and Wyoming, and Puerto Rico. - U.S. citizenship or current authorization to work in the U.S. required and no current or future work authorization sponsorship available. We’re committed to fair hiring practices and to making employment decisions without regard to race, color, religion, sex, sexual orientation, gender identity, gender expression, national origin, age, military or veteran status, disability, genetic information, or other legally protected characteristics. Responsibilities - Oversee vendor management, partner governance, and oversight to deploy systems that are complete, designed and managed over life cycles - Identify problems proactively, plan solutions, recommend software and systems, and coordinate developments in an orderly manner to meet business requirements - Monitor and test performance and capacity for potential bottlenecks, identify possible solutions, and work with partners to implement fixes - Provide innovative solutions to proactively ensure the highest levels of systems and infrastructure availability in order to resolve escalations of high complexity - Create the platform strategy and road map in collaboration with Enterprise Architecture - Maintain awareness of technology trends in area of responsibility and makes appropriate recommendations - Meet commitments and deliverables as related to leading projects and or project oversight - Develop and execute against solution strategies and business plans that support business expansion - Maintain and administer computer and data networks and related computing environments including computer hardware, systems software, applications software, and all configurations - Promotes adherence to integrated test strategy requirements and quality standards using test driven development principles - May perform other job duties as directed by Employee's Leaders Knowledge, Skills and Abilities - Ability to analyze and resolve problems of high complexity - Expert knowledge of hardware components, systems, software, and networking technologies - Ability to complete and train others to perform troubleshooting, root-cause analysis, solution development, and implementation within specific technology areas - Skilled in expert partnering, negotiation, and communication in working with Business Customers and Technology support - Expert knowledge of systems development methodologies, practices, concepts, and technologies - Skilled in diagnosing, troubleshooting, and resolving hardware, software, or other network and system problems, and replacing defective components when necessary - Ability to mentor and lead Engineers - Ability to develop, present, and effectively communicate complex ideas and strategies in both technical and user-friendly language to a variety of audiences - Skilled in excellent project management and analytical/creative problem-solving - Skilled in excellent written, oral and interpersonal communication Education - Required: High School Diploma or GED - Required: Bachelor's degree in Computer Science, Engineering, Information systems or similar fields of study or equivalent advanced level experience Experience - Required: Advanced-level experience, seasoned and specialized knowledge in system engineering Licensing/Certification - N/A Physical Abilities - Ability to perform work duties from limited space work station/desk/office area for extended periods of time - Ability to communicate and interact with others in the English language to meet the demands of the job - Ability to use a computer and other office productivity tools with sufficient speed and accuracy to meet the demands of the job Other Qualifications - Must maintain a well-groomed appearance per Company appearance standards as described in established guidelines - Must be a U.S. citizen or have authorization to work in the United States as defined by the Immigration Reform Act of 1986 - Must be at least 18 years of age - Must be able to comply with Company attendance standards as described in established guidelines - Must be able to travel and /or attend Company and non-Company facilities and remote locations such as remote-based offices as necessary Pay & Benefits - Competitive market salary from $138,800 - $154,200 per year* depending on qualifications and experience. For eligible Leadership and individual contributor roles, additional bonus opportunities are available and awarded at the discretion of the company. Benefits you’ll love - Fly for free, as a privilege, on any open seat on all Southwest flights (your eligible dependents too) - Southwest will help fund your 401(k) retirement savings with Company contributions up to 9.3% of your eligible earnings** - Potential for annual ProfitSharing contribution in the Southwest Retirement Savings Plan- when Southwest profits, you profit*** - Competitive health insurance for you and your eligible dependents (including pets) - Southwest offers health plan coverage options that start from the very first day of employment. You will have 30 days to select and enroll in your health plan with coverage retroactively available to your first day of employment. - Explore more Benefits you’ll love: careers.southwestair.com/benefits *Pay amount does not guarantee employment for any particular period of time. Southwest Airlines is an Equal Opportunity Employer. Please print/save this job description because it won't be available after you apply. Job Posting End Date 03/18/2026

• Implement system deployments and manage the version update cycle, ensuring that features meet product requirements; • Plan, manage and monitor all project phases, ensuring deliveries within deadlines, scope and quality standards; • Prepare functional specifications together with the Systems team, detailing business requirements and expected functionalities; • Collaborate with the business team to handle production requests and manage incidents.