{"id":2981079,"url":"https://alion.io/job/mastercard-senior-software-engineer-mcp-rag","title":"Senior Software Engineer (MCP & RAG)","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":161,"ghost_share":0.019,"stale_share":0.453,"repost_share":0.062,"time_to_fill_p50_days":27,"computed_at":"2026-10-28T05:59:10Z"}},"role":"AI/ML","role_family":"AI/ML","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":["Dublin, Ireland"],"countries":["IE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":89000,"max_usd":191000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":11},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Angular","optional":false},{"name":"AWS","optional":false},{"name":"Databricks","optional":false},{"name":"LangChain","optional":false},{"name":"LLM","optional":false},{"name":"Model Context Protocol","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"Semantic Search","optional":false},{"name":"CI/CD","optional":true},{"name":"Docker","optional":true},{"name":"GraphDB","optional":true},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true},{"name":"pgvector","optional":true},{"name":"PostgreSQL","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-19T00:00:00Z","employer_posted_date":"2026-10-19","last_verified_at":"2026-10-28T03:56:10Z","board_verified":true,"closed_at":null,"days_open":9,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":9},"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 (MCP & RAG)OverviewThe Program Modernization team at MasterCard drives transformation and champions modernization across technology, risk, and service operations. We establish the foundation for scalable programs, resilient systems and control governance that empowers transformation.\nThe mission of the Technology Modernization team is to enable all the Mastercard programs across the organization to thrive in an evolving regulatory environment by fostering a culture of strong technology controls and effective execution. The team designs and delivers innovative, data-driven solutions that fulfill assurance obligations and regulatory requirements by proactively identifying risks, build real-time tools that leverage technology to continuously test and monitor the control environment. These capabilities enables audit-ready compliance portal for inventorying, managing, testing, and evidencing technology controls.\nMastercard is committed to driving innovation through advanced technologies and data-driven insights. We are seeking a Lead Engineer to design and deliver scalable, enterprise-grade AI solutions that enhance our digital capabilities and customer experiences.\nThis role will focus on building intelligent, production-ready systems leveraging large language models (LLMs), knowledge bases with vector search, and modern cloud/data platforms, while ensuring alignment with Mastercard’s standards for security, performance, and reliability.\nRole & Responsibilities\nDesign, develop, and deliver AI-powered solutions leveraging modern architectures, including LLM-based systems and retrieval-augmented generation (RAG)\nBuild and maintain enterprise knowledge bases with vector search capabilities, enabling semantic search and intelligent information retrieval\nDevelop LLM-driven applications using frameworks such as LangChain, including prompt engineering, chaining, and orchestration patterns\nImplement and integrate solutions leveraging Model Context Protocols (MCP) or equivalent model interaction frameworks\nArchitect scalable and secure solutions across cloud and data ecosystems, including AWS, Cloudera, and Databricks\nCollaborate cross-functionally with product, engineering, and data teams to translate business needs into AI-enabled solutions\nDevelop and maintain robust APIs and microservices to support AI applications and front-end integrations\nEnsure solutions adhere to Mastercard’s standards for data governance, security, compliance, and operational excellence\nMonitor and optimize model performance, reliability, and scalability in production environments\nContribute to technical design discussions, mentor junior engineers, and promote engineering best practices\nAll About You\nProven experience (5 to 10 years) in software engineering, with strong focus on AI/ML and distributed systems\nBachelor’s or Master’s degree in Computer Science, Artificial Intelligence, Data Science, or a related discipline\nStrong proficiency in Python, with experience building scalable backend systems\nExperience with Angular or similar frontend frameworks for building user-facing AI applications\nHands-on experience with LLM frameworks (e.g., LangChain) and building RAG-based systems\nExpertise in designing knowledge bases with vector search and working with embedding models\nStrong experience with cloud platforms, particularly AWS, and familiarity with Cloudera and Databricks ecosystems\nSolid understanding of system design, APIs, and microservices architecture\nPreferred Skills\nExperience with Model Context Protocol (MCP) or similar AI orchestration frameworks\nExperience with vector databases such as PGVector, GraphDB\nFamiliarity with MLOps practices, including CI/CD pipelines, monitoring, and lifecycle management\nKnowledge of containerization and orchestration (Docker, Kubernetes)\nExperience working in highly regulated, large-scale enterprise environments\nKey Competencies\nStrong problem-solving and analytical thinking\nAbility to operate effectively in a collaborative, fast-paced environment\nExcellent communication and stakeholder engagement skills\nDemonstrated ownership and accountability for end-to-end delivery\nCommitment to continuous learning and staying current with emerging AI technologies\nCorporate Security Responsibility\nAll activities involving access to Mastercard assets, information, and networks must comply with Mastercard’s security policies and standards. Employees are responsible for maintaining the confidentiality, integrity, and availability of information.\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.","description_format":"text","description_chars":5664,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Continuous learning"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Cards & Card Issuing","Payment Processing & Gateways"],"lifecycle":[{"event":"open","at":"2026-10-21T07:02:09Z"}],"visa":[],"liveness":{"score":88,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.884,"p_room":1,"age_days":9,"expected_fill_days":27,"reasons":["conf:2","velocity","win:early","comp:brand"],"computed_at":"2026-10-28T05:59:10Z"},"pay":null,"html_url":"https://alion.io/job/mastercard-senior-software-engineer-mcp-rag","json_url":"https://alion.io/job/mastercard-senior-software-engineer-mcp-rag.json","meta":{"generated_at":"2026-10-28T07:02:51Z","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":9473,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-29T00:00:00Z"}},"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-mcp-rag"},{"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-mcp-rag"},{"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-mcp-rag"},{"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-mcp-rag\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmastercard-senior-software-engineer-mcp-rag"}]}