{"id":3049581,"url":"https://alion.io/job/capgemini-mainframe-developer-l3-support-engineer","title":"Mainframe Developer & L3 Support Engineer","company":{"id":145,"name":"Capgemini","domain":"capgemini.com","url":"https://alion.io/company/capgemini","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Career site","truth_index":{"grade":"B","score":80,"open_postings":1775,"ghost_share":0.001,"stale_share":0.786,"repost_share":0.006,"time_to_fill_p50_days":28,"computed_at":"2026-10-22T06:10:10Z"}},"role":"Enterprise Apps","role_family":"Enterprise Apps","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Aguascalientes, Mexico"],"countries":["MX"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CICS","optional":false},{"name":"COBOL","optional":false},{"name":"Db2","optional":false},{"name":"Incident Management","optional":false},{"name":"JCL","optional":false},{"name":"VSAM","optional":false}],"status":"live","first_seen_at":"2026-10-21T22:41:31Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-10-22T20:05:44Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Mainframe Developer / L3 Support Engineer (Senior Level)\nCapgemini Mexico\nAs a Senior Mainframe Developer / L3 Support Engineer at Capgemini, you will play a critical role in maintaining, enhancing, and supporting business-critical mainframe applications. You will leverage your expertise in COBOL, Natural, ADABAS, DB2, VSAM, CICS, and z/OS environments to deliver reliable solutions, resolve complex production issues, and ensure operational stability. Working closely with global teams and business stakeholders, you will drive continuous improvement, support modernization initiatives, and contribute to the long-term success of mission-critical systems.\nYour Role\nResponsibilities & Scope\nWork on large-scale, business-critical mainframe applications that support core enterprise operations.\nCollaborate with multidisciplinary teams across development, testing, infrastructure, and business functions to deliver high-quality solutions.\nTake ownership of both application enhancements and complex L3 production support activities across online and batch processing environments.\nDrive problem resolution through detailed analysis, debugging, root cause identification, and implementation of sustainable solutions.\nContribute to modernization and continuous improvement initiatives while preserving the stability and integrity of legacy systems.\nApply industry best practices in software engineering, incident management, change management, and operational excellence.\nGrow your technical expertise in a collaborative environment that values innovation, accountability, and continuous learning.\nYour Profile\nStrong expertise in mainframe technologies, including COBOL, Natural, ADABAS, DB2, VSAM, CICS, JCL, and z/OS, with the ability to navigate complex application ecosystems.\nDemonstrated analytical mindset with the ability to troubleshoot, diagnose, and resolve complex production incidents while identifying long-term improvements.\nOwnership mentality and accountability when managing critical applications, prioritizing service reliability and business continuity.\nEffective communication and stakeholder collaboration skills, enabling productive interactions across technical and non-technical teams.\nContinuous improvement mindset with a focus on quality, operational excellence, knowledge sharing, and modernization opportunities.\nWhat you’ll love\nJoin global employee networks that promote engagement, development, and belonging.\nAccess continuous learning through internal academies, certifications, and mentorship.\nWell-being hub and different wellbeing initiatives \nNeed to know\nFlexible Schedules: We support flexible working hours to accommodate different lifestyles, time zones, and family responsibilities.\nCareer Development in Spanish & English: Training, certifications, and mentorship programs available in both languages to support bilingual growth.\nAbout Capgemini\nCapgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organizations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of over 420,000 team members in more than 50 countries. We deliver end-to end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations.\nAt Capgemini Mexico, we aim to attract the best talent and are committed tocreating a diverse and inclusive work environment, so there is nodiscrimination based on race, sex, sexual orientation, gender identity orexpression, or any other characteristic of a person. 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