{"id":2480967,"url":"https://alion.io/job/mastercard-senior-software-engineer-java-full-stack-ai","title":"Senior Software Engineer - Java Full Stack & AI","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":94,"open_postings":244,"ghost_share":0.016,"stale_share":0.352,"repost_share":0.098,"time_to_fill_p50_days":21,"computed_at":"2026-10-14T06:34:16Z"}},"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":["O'Fallon, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":115000,"max":184000,"currency":"USD","period":"year","gross":null,"usd_annual":184000},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Angular","optional":false},{"name":"CI/CD","optional":false},{"name":"Copilot","optional":false},{"name":"Java","optional":false},{"name":"Machine Learning","optional":false},{"name":"Oracle","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false},{"name":"AWS","optional":true},{"name":"Azure","optional":true},{"name":"Databricks","optional":true},{"name":"Delta Lake","optional":true},{"name":"Docker","optional":true},{"name":"GCP","optional":true},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true},{"name":"Spark","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-13T22:42:05Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-10-14T18:05:10Z","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 Engineer - Java Full Stack & AIOverviewThe Decision Services Technology team within Mastercard's Business & Market Insights organization develops analytics, reporting, and intelligence solutions that help customers investigate transactions, identify fraud patterns, and make informed business decisions.\nAs part of a rapidly growing product area, the team is investing heavily in AI-powered capabilities that automate manual analysis and improve customer outcomes. Supporting a product with significant growth and a multi-year roadmap, engineers on this team play a key role in developing, enhancing, and scaling innovative solutions across full-stack, cloud, data, and AI technologies.\nAs a Senior Software Engineer, you will independently deliver complex solutions, influence technical design decisions, and help drive engineering excellence across the platform. This role requires deep technical expertise, strong ownership, and the ability to mentor other engineers while operating with minimal guidance.\nWhat You'll Do\nSoftware Development\nDesign, develop, test, deploy, and support complex software solutions.\nBuild scalable APIs, backend services, and modern web applications.\nUtilize Java, Spring Boot, React or Angular, and Python across the technology stack.\nLead implementation efforts for AI-enabled capabilities and automation initiatives.\nDrive technical solutions from requirements through deployment.\nDesign & Architecture\nContribute to architecture decisions and system design discussions.\nApply architectural patterns that support scalability, reliability, and maintainability.\nGuide technical implementation across distributed and cloud-based systems.\nSupport integration of AI and machine learning capabilities into business products.\nQuality & Operational Excellence\nChampion testing, secure coding, and code quality standards.\nConduct code reviews and mentor engineers through technical feedback.\nLead troubleshooting efforts and root-cause analysis for complex issues.\nImprove observability, automation, performance, and operational readiness.\nDrive continuous improvement initiatives across the engineering lifecycle.\nCollaboration & Leadership\nPartner closely with Product, Architecture, and Engineering leadership.\nServe as a technical mentor for less experienced engineers.\nInfluence technical direction and engineering best practices.\nContribute to Agile planning, estimation, and delivery leadership.\nRequired Qualifications\nBachelor's degree in Computer Science, Engineering, Information Technology, or a related field, or equivalent experience.\n6+ years developing enterprise software solutions.\nAdvanced proficiency in Java 8+ and Spring Boot.\nDeep understanding of REST APIs, microservices, and distributed systems.\nStrong knowledge of React, Angular, or comparable frontend frameworks.\nExpertise in Oracle or SQL-based database development.\nFamiliarity with CI/CD practices and modern engineering workflows.\nKnowledge of Python for AI, automation, and data-driven applications.\nExposure to GitHub Copilot or similar AI-assisted development tools.\nStrong troubleshooting, debugging, and analytical capabilities.\nAbility to independently deliver complex technical solutions with minimal oversight.\nPreferred Qualifications\nExperience with AWS, Azure, or GCP.\nKnowledge of Docker, Kubernetes, and cloud-native architectures.\nExposure to Databricks, Spark, Delta Lake, or similar technologies.\nExperience integrating AI/ML services, APIs, or models into enterprise platforms.\nExperience mentoring engineers and leading technical initiatives.\nBackground in payments, fraud, analytics, or data-driven business solutions.\nSuccess Measures\nA successful Senior Software Engineer will:\nIndependently deliver complex features and technical initiatives.\nDemonstrate ownership of key systems, services, or technical domains.\nMentor team members and elevate engineering quality.\nContribute to AI-powered product innovation and platform growth.\nImprove scalability, reliability, performance, and operational excellence.\n•Influence engineering standards and technical direction across the team.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 the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 10 annual paid U.S. observed holidays; 401k with a best-in-class company match; deferred compensation for eligible roles; fitness reimbursement or on-site fitness facilities; eligibility for tuition reimbursement; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.\n\nTHIS POSTING RELECTS ONE OR MORE CURRENT VACANCIES ON OUR TEAM, AND MASTERCARD INTENDS TO FILL THIS POSITION BY 01/11/2027. If the fill date has passed, Mastercard intends to fill this position as soon as possible.\n\nPay Ranges\nO'Fallon, Missouri: $115,000 - $184,000 USD","description_format":"text","description_chars":7463,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["401k plan","Life insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Cards & Card Issuing","Payment Processing & Gateways"],"lifecycle":[{"event":"open","at":"2026-10-13T22:42:05Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 110 · green card filings: 139","filings_12m":110,"filings_prev_12m":161,"green_card_filings_12m":139,"median_offered_wage_usd":137520,"route":null,"cap_exempt":false,"checked_at":"2026-10-03T21:08:04+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":36}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":21,"reasons":["conf:3","win:early","comp:brand"],"computed_at":"2026-10-14T06:34:16Z"},"pay":{"stated_usd_annual":184000,"is_top_pay":true},"html_url":"https://alion.io/job/mastercard-senior-software-engineer-java-full-stack-ai","json_url":"https://alion.io/job/mastercard-senior-software-engineer-java-full-stack-ai.json","meta":{"generated_at":"2026-10-14T21:17:33Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":28403,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-15T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":252},"rest":"https://alion.io/mcp/rest/get_company?id=252"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmastercard-senior-software-engineer-java-full-stack-ai"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fmastercard-senior-software-engineer-java-full-stack-ai"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fmastercard-senior-software-engineer-java-full-stack-ai"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/mastercard-senior-software-engineer-java-full-stack-ai\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmastercard-senior-software-engineer-java-full-stack-ai"}]}