ABOUT BASETEN Baseten powers mission-critical inference for the world's most dynamic AI companies, like Cursor, Notion, OpenEvidence, Abridge, Clay, Gamma and Writer. By uniting applied AI research, flexible infrastructure, and seamless developer tooling, we enable companies operating at the frontier of AI to bring cutting-edge models into production. We're growing quickly and recently raised our $1.5B Series F , led by Altimeter Capital, Conviction Partners, and Spark Capital. Join us and help build the platform engineers turn to to ship AI products. THE ROLE Baseten is building its own GPU infrastructure for large-scale inference. As we move into large scale, high-density NVIDIA systems, the hardest failures are intermittent, cross-layer, and difficult to prove: RoCE congestion, InfiniBand stalls, ECN/DCQCN mis-tuning, bad optics, RNIC issues, host kernel stalls, GPU driver problems, and workload symptoms that look like network problems, but are not. We are hiring a Lead Software Engineer to build a first-class observability and root-cause analysis system for GPU fabrics. This is a hard distributed systems problem, not a dashboarding problem. The system will collect high-volume signals from switches, hosts, active probes, and inference services; reduce and correlate them in real time; understand topology and service ownership; and produce actionable diagnosis while an incident is still unfolding. This role sits at the boundary between networking and inference software. RDMA data paths, GPUDirect transfers, prefill/decode disaggregation, KV cache movement, request routing, and workload backpressure can all create fabric symptoms or hide real fabric failures. The goal is to tell an operator, quickly and with evidence, whether an incident is caused by the fabric, host, NIC, GPU, RDMA path, scheduler, or serving layer — and what to do next. EXAMPLE INITIATIVES Real-time telemetry engine — Build the ingestion, reduction, storage, and query path for high-cardinality fab
Market pay estimate
$153,120–$293,800 / year for comparable Software Engineer roles in United States. Not employer-provided.
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Role overview
Job description
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
Lead Software EngineerWho is Mastercard?Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential.
Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.
Overview
We are seeking an experienced Lead Software Engineer that possesses strong experience with Golang with strong communication skills to work within the Next Edge program. The Next Edge program is developing Mastercard’s next generation edge platform with programmatic interfaces for data transport (transactions, messages, events, APIs, files, etc.) that give our customers a single point of entry to Mastercard network via private customer on-prem connectivity as well as from public clouds.
Role
• Lead the design, development, and evolution of Mastercard's next-generation edge platform and backend services.
• Drive architecture decisions and establish engineering standards, patterns, and best practices across the team.
• Partner with Product, Architecture, Security, and Operations teams to define technical strategy and roadmaps.
• Lead complex technical initiatives from conception through production deployment.
• Mentor and coach engineers through code reviews, design reviews, and technical guidance.
• Identify and resolve system bottlenecks, reliability risks, and scalability challenges.
• Champion engineering excellence through Test-Driven Development, automation, CI/CD, and observability practices.
• Define and enforce testing strategies including unit, functional, integration, and end-to-end testing to ensure high-quality software delivery.
• Participate in production support, incident response, root cause analysis, and continuous improvement efforts.
• Apply and champion secure coding standards, threat modeling, vulnerability remediation, and security-by-design principles throughout the software development lifecycle.
• Strong understanding of algorithms, data structures, concurrency patterns, and distributed computing principles used in high-performance systems.
• Influence cross-team technical alignment and drive adoption of platform capabilities across the organization.
• Contribute to hiring, onboarding, and talent development activities.
All About you:
• Bachelor's degree in Computer Science, Computer Engineering, MIS, or equivalent practical experience.
• 8+ years of software engineering experience with expertise in Java, Spring Boot, Microservices, and distributed systems.
• Strong experience with Golang and cloud-native application development.
• Experience designing and operating highly available, scalable, and resilient platforms.
• Strong knowledge of event-driven architectures, APIs, messaging systems, and networked applications.
• Experience with Kubernetes, containerization, and cloud platforms (AWS, Azure, or GCP).
• Experience with CI/CD pipelines, infrastructure automation, and DevSecOps practices.
• Proficiency with GitHub, Jenkins, and modern software delivery tooling.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 [email protected] 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.
Corporate Security Responsibility
All 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:
Abide by Mastercard’s security policies and practices;
Ensure the confidentiality and integrity of the information being accessed;
Report any suspected information security violation or breach, and
Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.
Pay Ranges
O'Fallon, Missouri: $140,000 - $231,000 USDWhat they are looking for
Skills & requirements
Qualification
All About you: • Bachelor's degree in Computer Science, Computer Engineering, MIS, or equivalent practical experience; We hire the most qualified candidate for the role
Hiring company
Mastercard
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