{"id":3972965,"url":"https://alion.io/job/mastercard-senior-software-engineer-97","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":85,"open_postings":176,"ghost_share":0.023,"stale_share":0.483,"repost_share":0.074,"time_to_fill_p50_days":27,"computed_at":"2026-11-09T06:03:00Z"}},"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":["London, United Kingdom"],"countries":["GB"],"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":"CI/CD","optional":false},{"name":"Java","optional":false},{"name":"Platform Engineering","optional":false}],"status":"live","first_seen_at":"2026-11-09T16:54:12Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-09T16:54:12Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"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 EngineerJob OverviewYou'll join the Real Time Payments (RTP) Platform, Tooling & Engineering Enablement team as a senior technical individual contributor. We uplift engineering across RTP and act as a force multiplier for the program. We align RTP to Mastercard standards across platform, CI/CD, and governance, while improving developer experience and supporting AI enablement. You’ll apply strong engineering knowledge to technical problems, working with teams across RTP Engineering.\nHow success is measured\nThe team is measured on four key areas:\nDeveloper Experience - DX improves across RTP and stays above the Mastercard benchmark\nInnovation & Architecture - the right technology comes into RTP, and what works is shared back with the enterprise\nAI Enablement - AI is adopted consistently and acts as a force multiplier across RTP\nStandards & Governance - Mastercard and RTP standards embedded, with teams, including our own, held to them\nMajor Accountabilities\nApply strong engineering expertise to improve how RTP builds, tests, and ships software\nContribute to the design and delivery of secure, resilient, and scalable solutions with clear, well-documented designs\nInvestigate technical problems, analysing data and areas of failure or inefficiency, and turn findings into practical recommendations\nEvaluate approved engineering practices and technologies that could improve how RTP works\nSupport practical AI adoption across RTP Engineering teams using approved tools\nHelp embed standards and governance by supporting adoption, reviewing how we work, and helping turn gaps into owned actions or items for the program tech roadmap\nWork with teams across RTP to support shared engineering outcomes\nCommunicate technical topics clearly to leadership through concise reporting and recommendations\nShare engineering knowledge and provide guidance to engineers across cross-functional teams\nEducation\nBachelor's degree in Computer Science, Information Technology, or Engineering, or equivalent experience\nKnowledge / Experience\nStrong experience in software engineering and software design, with Java desired\nStrong experience in CI/CD\nStrong experience in platform engineering and cloud\nExperience delivering complex technical work and contributing to solution design\nExperience using AI in day-to-day engineering, such as AI coding assistants and agents, and supporting adoption across teams\nExperience applying engineering standards, including design, secure coding, and testing\nExperience presenting technical information clearly to business and technology audiences\nExperience supporting and guiding other engineers\nExperience working effectively across teams without direct authority\n• Knowledge of payments, or experience working in a regulated industry\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 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