{"id":3151235,"url":"https://alion.io/job/mastercard-senior-software-engineer-63","title":"Senior Software Engineer","company":{"id":252,"name":"Mastercard","domain":"mastercard.com","url":"https://alion.io/company/mastercard","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":87,"open_postings":186,"ghost_share":0.027,"stale_share":0.409,"repost_share":0.091,"time_to_fill_p50_days":26,"computed_at":"2026-10-26T05:57:25Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Toronto, Canada"],"countries":["CA"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":79000,"max_usd":142000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":255},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"Java","optional":false},{"name":"Rest API","optional":false}],"status":"live","first_seen_at":"2026-10-23T12:22:44Z","employer_posted_date":"2026-10-23","last_verified_at":"2026-10-24T09:09:51Z","board_verified":false,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Our Purpose\nMastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.\nTitle and Summary\nSenior Software EngineerOverview:Ethoca, a Mastercard company, is transforming the way merchants and card issuers work together to combat fraud and improve the digital commerce experience. We build highly scalable, secure, and resilient technology that powers collaboration across the global payments ecosystem.\nWe are looking for a Senior Software Engineer who thrives on solving complex technical problems, takes ownership of outcomes, and enjoys building production-grade software that operates at scale. This role is ideal for an engineer who can independently drive initiatives, influence technical decisions, mentor others, and contribute to a culture of engineering excellence.\nMastercard powers an inclusive digital economy by making transactions safe, simple, smart, and accessible. Through secure technology, trusted partnerships, and continuous innovation, we help individuals, businesses, and governments realize their greatest potential.\nThe Role :\nDesign, develop, test, deploy, and maintain high-quality software solutions that meet Mastercard standards for security, reliability, scalability, and operational excellence.\nIndependently drive technical initiatives from concept through production, navigating ambiguity, managing dependencies, and delivering measurable business outcomes.\nCollaborate with product, engineering, operations, security, and compliance partners to translate business needs into well-designed technical solutions.\nContribute to architecture and design decisions for distributed systems, APIs, integrations, and platform capabilities, balancing business priorities with long-term maintainability.\nOwn software services throughout their lifecycle, including implementation, deployment, monitoring, incident response, and continuous improvement.\nTroubleshoot complex application and production issues using logs, metrics, traces, debugging tools, and systematic root cause analysis techniques.\nParticipate in on-call support, incident reviews, and operational readiness activities while driving improvements that enhance reliability and reduce operational toil.\nApply secure-by-design and privacy-conscious engineering practices when working with sensitive financial and consumer data.\nFoster engineering excellence through code reviews, technical mentoring, knowledge sharing, and promotion of development best practices.\nContinuously improve automation, testing, observability, developer experience, and software delivery processes.\nUse approved AI-assisted engineering tools responsibly to improve productivity while applying sound engineering judgment, rigorous validation, and strong protection of confidential or sensitive information.\nAll About You :\nBachelor's degree in Computer Science, Information Technology, a related field, or equivalent practical experience.\nStrong foundation in software engineering principles including system design, source control, testing, debugging, performance analysis, maintainability, and secure software development.\nExpert-level proficiency with Java (17+) and Spring-based application development.\nExperience designing and building RESTful APIs and service integrations.\nExperience developing cloud-native applications and distributed systems, preferably in Azure environments.\nProficient with distributed source control systems (e.g., Git), including branching strategies, code review workflows, conflict resolution, and release management practices.\nExperience working within modern CI/CD environments, including build automation, deployment pipelines, release validation, and operational support.\nDemonstrated ability to investigate and resolve complex production issues through structured troubleshooting, evidence-based decision-making, and root cause analysis.\nStrong understanding of observability practices including logging, monitoring, metrics, dashboards, distributed tracing, and reliability-oriented alerting.\nExperience with modern data platforms and databases, including data modeling, scalability, performance, and operational trade-offs.\nWorking knowledge of authentication, authorization, secrets management, vulnerability management, and secure handling of sensitive data in regulated environments.\nStrong ownership mindset with a proven ability to take initiative, drive work to completion, remove blockers, and deliver results with limited supervision.\nAbility to collaborate effectively across teams, influence technical decisions, and communicate complex concepts to both technical and non-technical stakeholders.\nComfortable using approved AI-assisted development tools and applying critical judgment to validate AI-generated outputs before production use.\nCommitted to continuous learning, engineering excellence, and helping others grow.\nPreferred Qualifications :\nExperience in payments, fintech, commerce, banking, fraud prevention, or other regulated industries.\nExperience building high-throughput, highly available, or event-driven systems.\nExperience with batch processing, workflow orchestration, or large-scale data pipelines.\n• Experience incorporating AI-enabled capabilities into products or engineering workflows.Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact  and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.\nCorporate Security Responsibility\nAll activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:\nAbide by Mastercard’s security policies and practices;\n\nEnsure the confidentiality and integrity of the information being accessed;\n\nReport any suspected information security violation or breach, and\n\nComplete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.\n\nIn line with Mastercard’s total compensation philosophy and assuming that the job will be performed in Canada, the successful candidate will be offered a competitive pay based on location, experience and other qualifications for the role and may be eligible to participate in a discretionary annual incentive program. 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