{"id":1754625,"url":"https://alion.io/job/thermo-fisher-scientific-senior-mainframe-developer","title":"Senior Mainframe Developer","company":{"id":7922,"name":"Thermo Fisher Scientific","domain":"thermofisher.com","url":"https://alion.io/company/thermo-fisher-scientific","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":80,"open_postings":308,"ghost_share":0,"stale_share":0.779,"repost_share":0.003,"time_to_fill_p50_days":31,"computed_at":"2026-11-04T06:34:25Z"}},"role":"Enterprise Apps","role_family":"Enterprise Apps","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Ottawa, Canada"],"countries":["CA"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":85500,"max":114000,"currency":"CAD","period":"year","gross":null,"usd_annual":80123},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CICS","optional":false},{"name":"COBOL","optional":false},{"name":"Db2","optional":false},{"name":"JCL","optional":false},{"name":"VSAM","optional":false},{"name":"Agile","optional":true},{"name":"Endevor","optional":true},{"name":"File-AID","optional":true},{"name":"Incident Management","optional":true},{"name":"Scrum","optional":true},{"name":"TSO/ISPF","optional":true},{"name":"Xpediter","optional":true}],"status":"live","first_seen_at":"2026-06-29T00:00:00Z","employer_posted_date":"2026-06-29","last_verified_at":"2026-11-05T04:16:34Z","board_verified":true,"closed_at":null,"days_open":129,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":128},"description":"Work Schedule\nStandard (Mon-Fri)Environmental Conditions\nOfficeJob Description\nAs part of the Thermo Fisher Scientific team, you’ll discover meaningful work that makes a positive impact on a global scale. Join our colleagues in bringing our Mission to life every single day to enable our customers to make the world healthier, cleaner and safer. We provide our global teams with the resources needed to achieve individual career goals while helping to take science a step beyond by developing solutions for some of the world’s toughest challenges, like protecting the environment, making sure our food is safe or helping find cures for cancer.\nWe are seeking aSenior Mainframe Developer to join our Ottawa-based engineering team supporting the development, enhancement, modernization, and production stability of criticalapplications. This role is ideal for a hands-on mainframe professional who can take ownership of end-to-end delivery, quickly learn complex business and technical domains, lead design discussions, solve production and delivery challenges, and mentor other team members. The successful candidate will bring deep experience with COBOL-based mainframe applications and related technologies, strong analytical and troubleshooting skills, and the ability to partner effectively with business stakeholders, architects, QA, support teams, and global delivery partners. This is a senior role for someone who combines technical depth, strategic solution thinking, accountability, curiosity, and a strong team-first mindset.\nKey Responsibilities\nLead the design, development, testing, implementation, and maintenance of applications using COBOL, CICS, JCL, VSAM, IDMS and SORT utilities\n\nOwn and drive end-to-end delivery of projects, enhancements, defects, and production fixes, ensuring quality, timeliness, and business alignment\n\nAnalyze business requirements and translate them into scalable, maintainable, and reliable technical solutions\n\nPrepare technical design documents, impact assessments, implementation plans, data flow analysis, and interface specifications\n\nCollaborate with business stakeholders to understand requirements, identify risks, and propose practical and strategic solutions\n\nMentor and guide junior and intermediate developers, conduct code reviews, and promote engineering standards and best practices\n\nAct as a trusted technical resource for application knowledge, design guidance, code quality, troubleshooting, and delivery risk management\n\nLead troubleshooting, root-cause analysis, and resolution of complex production issues, ensuring minimal business impact\n\nLead or contribute to modernization and integration initiatives, including impact assessment, interface design, data flow analysis, API or middleware integration, and safe migration strategies\n\nParticipate in and support release planning, deployment, post-production validation, and operational readiness activities\n\nParticipate in an on-call support rotation, including occasional weekends or off-hours\n\nEnsure adherence to development standards, documentation, security, audit, and compliance requirements\n\nCollaborate effectively with global teams, including onshore, offshore, business, QA, infrastructure, architecture, support, and cross-functional partners\n\nProactively identify risks, dependencies, technical debt, and opportunities to improve system stability, delivery effectiveness, and team capability\n\nRequired Qualifications\nBachelor's Degree holder with 8+ years of hands-on Mainframe application development experience\nStrong hands-on expertise in:\nCOBOL\n\nCICS\n\nJCL\n\nVSAM\n\nIDMS/DB2\n\nSORT utilities\n\nExcellent understanding of designing and developing applications in Mainframe technologies\n\nStrong experience supporting both batch and online mainframe applications\n\nStrong solutioning mindset with ability to design and implement technical solutions\n\nDemonstrated ownership mindset with the ability to work through ambiguity, proactively identify risks, and drive issues to closure\n\nAbility to quickly learn complex legacy applications, business processes, data flows, and integration points\n\nWilling to provide application support as needed and on rotation\n\nAbility to collaborate with multiple business teams and solve complex issues\n\nStrong analytical and problem-solving abilities\n\nExcellent communication, collaboration, and stakeholder-management skills\n\nExperience with enterprise systems integration\n\nKnowledge of security best practices and compliance requirements\n\nAbility to work independently and as part of a distributed team\n\nStrong team orientation with the ability and willingness to mentor team members and raise overall team capability\n\nPreferred Qualifications\nExposure to RPG\n\nExperience with Lotus Notes application development or support\n\nUnderstanding of API development, integration, or modernization strategies\n\nExperience with MQ, middleware, file-transfer patterns, or enterprise integration approaches\n\nFamiliarity with Agile/Scrum methodologies\n\nExperience working inorder management, fulfillment, supply chain, finance, or other high-volume transactional systems\n\nStrong experience in production support and incident management\n\nExperience with tools such as TSO/ISPF, File-AID, Xpediter, Endevor, Changeman, Control-M, CA7, or similar mainframe development and scheduling tools\n\nExperience working with globally distributed teams, including onshore, offshore, and cross-functional delivery partners\n\nWork Environment\nLocation: Ottawa, Canada\nWork Model: Hybrid work model with a combination of onsite and remote work, as defined by team and business needs\nSupport Expectations: Participation in a shared on-call rotation, including occasional weekends or off-hours support\nWhat Success Looks Like\nThe successful candidate will:\nSuccessfully leads projects and delivers high-quality, scalable, and maintainable solutions\n\nProvides effective design solutions aligned with business needs, system architecture, and long-term technology direction\n\nActs as a technical mentor and go-to person for application knowledge, design guidance, code quality, troubleshooting, and delivery risk management\n\nDemonstrates strong leadership, ownership and accountability in delivery and production support\n\nEngages proactively with business stakeholders and adds value in discussions\n\nQuickly learns complex systems, business processes, and technical dependencies\n\nIdentifies risks, technical debt, and improvement opportunities before they become delivery or production issues\n\nContinuously learns, explores new approaches, and drives problem-solving initiatives\n\nContributes to team success, system stability, and modernization efforts\n\nSupports a positive, collaborative, and team-first culture by sharing knowledge, mentoring others, and helping the team succeed\n\n Compensation\nThe estimated annualized pay range for this position in Ontario is 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