Jobs / United States / Mastercard International Incorporated
Senior Software Engineer
Mastercard International Incorporated · 🇺🇸 O'Fallon, Missouri
Sponsorship verdict
Sponsorship possible
One solid signal, not two — worth applying, and worth asking about sponsorship early.
- Employer is on a government sponsor recordThe US Department of Labor certified 76 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 286 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
- The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
- No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.
- What Mastercard International Incorporated paid sponsored hires in similar roles10 certified filings for “Senior Software Engineer” (Software Developers) in MO: $115k–$138k, median $127k. Most were filed at wage level II (50%) — 2 lottery entries, ≈31% projected selection odds for cap-subject employers. Source: US Department of Labor LCA disclosure data (Oct 2025 – Jun 2026).
- Confirmed live todayWhen a source last listed this job as open.
US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).
A verdict summarises public evidence; it is not legal advice and never a guarantee — the employer and the immigration authority decide. Sign in to factor in where you can already work.
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Sponsor Radar — Mastercard International Incorporated
The US Department of Labor certified 76 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest Jun 2026) — the step every H-1B hire needs first. USCIS also records 286 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
Past sponsorship or register membership never guarantees sponsorship for this vacancy or for you. Full Sponsor Radar for Mastercard International Incorporated →
About the role
Our Purpose Mastercard 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. Title and Summary Senior Software Engineer Overview The Business & Market Insights team within Mastercard's Services organization develops products and platforms that help customers understand consumer behavior, market trends, and business performance. Through data-driven insights, the team enables organizations to make informed decisions and drive growth. As a Senior Software Engineer, you will design, build, test, deploy, and support full-stack solutions that power these capabilities. Working across the frontend, backend, data, and cloud ecosystem, you will contribute to modern, reliable platforms while helping advance technical excellence and operational maturity. What You'll Do Software Development •Design, develop, test, and support full-stack applications, APIs, and services. •Translate business and technical requirements into maintainable solutions. •Build REST APIs, microservices, and user-facing functionality. •Write high-quality code that aligns with Mastercard engineering standards. Design & Architecture •Participate in application design and architectural discussions. •Contribute to cloud-based, resilient solution designs. •Support modernization efforts and technology enhancements. Quality & Operational Excellence •Create and maintain automated unit, integration, and API tests. •Participate in code reviews to strengthen quality and maintainability. •Troubleshoot production issues, perform root cause analysis, and optimize performance. •Support observability, monitoring, CI/CD pipelines, and operational readiness. Collaboration •Partner with Product, Architecture, UX, Security, and Engineering teams to deliver business value. •Participate in Agile ceremonies, technical planning, and knowledge-sharing activities. •Promote engineering standards and continuous improvement. Required Qualifications •Bachelor's degree in Computer Science, Engineering, Information Technology, or a related field, or equivalent practical experience. •Agentic AI Development and Spec-Driven Development experience. •Experience building enterprise solutions using Java and Spring Boot. •Experience developing REST APIs, microservices, and distributed systems. •Working knowledge of React, JavaScript/TypeScript, HTML, and CSS. •Experience with cloud platforms, relational databases, and CI/CD pipelines. •Strong troubleshooting, debugging, and analytical skills. •Ability to deliver technical solutions independently while collaborating effectively within a team environment. Preferred Qualifications •Experience with API management solutions such as Apigee, MuleSoft, Kong, or similar platforms. •Knowledge of AWS cloud services and cloud-native application design. •Familiarity with Kafka and event-driven architectures. •Experience with containerization, orchestration, and Infrastructure as Code tools, including Docker, Kubernetes, and Terraform. •Exposure to observability, monitoring, and performance management tools such as Splunk, Dynatrace, Grafana, or Prometheus. Success Measures (First 12 Months) •A successful Senior Software Engineer will: •Deliver features from design through production deployment. •Build reliable, high-performing applications and services. •Enhance maintainability, performance, and operational efficiency. •Demonstrate owners