Top Tech Jobs & Startup Jobs

Lead hands-on AI security engineering for foundation models and AI platforms. Responsibilities include testing for model vulnerabilities, implementing guardrails and access controls, securing APIs and data usage, conducting bias and fairness assessments, producing governance evidence, advising engineers on secure design, monitoring emerging attack techniques, and supporting incident response and remediation. The role translates central security, privacy, and AI governance guidance into tested production controls across cloud and hybrid environments.

Own the end-to-end developer experience for Mastercard Checkout Services, including onboarding, learning, integration, troubleshooting, and adoption. Conduct developer research, analyze behavioral data, identify friction in APIs, SDKs, tooling, and documentation, and translate insights into UX and content improvements. Define developer content strategy, create educational materials, engage developer communities, and influence product roadmaps through evidence-based recommendations. Partner with product, engineering, design, technical writing, and onboarding teams to improve integration success, reduce implementation time, and lower support demand.

Designs and documents issuer loyalty solutions across Europe using Mastercard platforms. Leads client discovery, requirements gathering, architecture and workflow design, technical documentation, and implementation planning. Acts as the primary liaison between client, business, product, engineering, and development teams. Evaluates infrastructure, identifies constraints and risks, proposes implementation patterns, and manages multiple projects in cross-functional environments. Requires customer-facing communication, loyalty and rewards knowledge, web and API understanding, and comfort working across geographic markets.

Develop, test, deploy, and support highly available, low-latency authentication and decisioning services. Build REST APIs and microservices, troubleshoot production issues, contribute to automated testing and CI/CD, maintain platform components, and participate in Agile delivery. Collaborate with engineers, architects, product managers, SRE teams, and stakeholders while applying secure coding, performance, resiliency, and software engineering best practices.

Own the end-to-end developer experience for Mastercard Checkout Services, improving onboarding, documentation, APIs, SDKs, tooling, and integration journeys. Conduct developer research, analyze behavioral data, develop content strategy, create educational materials, and advocate for developer needs. Partner with product, engineering, design, technical writing, onboarding, and regional teams to reduce integration friction, improve adoption, influence roadmaps, and align developer experience improvements with business KPIs.

Leads hands-on security engineering for AI platforms and foundation models. Tests models for vulnerabilities such as membership inference, model inversion, data leakage, and adversarial manipulation; implements guardrails, access controls, API security, secure data controls, fairness testing, and audit evidence. Partners with governance, privacy, and security teams, advises engineers on secure designs, monitors emerging attack techniques, and supports incident remediation across cloud and hybrid environments.

Manage the commercialization, market enablement, and customer pilots for Mastercard Identity Solutions across more than 30 European markets, Moldova, and Ukraine. Coordinate product, commercial, and local market teams; develop playbooks and sales materials; guide market prioritization; support customer opportunities; oversee pilot delivery; and maintain pipeline reporting. The role requires strong cross-functional leadership, commercial judgment, organization, and familiarity with digital identity ecosystems.

Designs, builds, secures, and governs enterprise APIs and cloud-native microservices using Java, Spring Boot, Python, and AWS. Defines API standards, OpenAPI specifications, security practices, testing strategies, and distributed-system patterns. Develops reusable frameworks, SDKs, and platform capabilities while collaborating with product, architecture, security, and engineering teams. Contributes to code reviews, incident resolution, modernization, automation, and long-term API architecture strategy.

Entry-level Associate Consultant in Mastercard’s 18-month Launch Graduate Program. The role supports client consulting engagements through strategic analysis, data-driven insights, solution development, client relationship building, and clear communication of recommendations. Candidates may specialize in Strategy & Transformation or Performance Analytics, using quantitative analysis, business intelligence, SQL, Python, and other tools to solve complex business challenges across industries.

Leads U.S. Marketing and Communications strategic planning, budgeting, forecasting, investment allocation, commercialization analysis, and financial operations. Partners with marketing, Finance, Services, Procurement, and business teams to optimize spending, develop business cases, project advertising capacity, improve workflows, oversee vendor and purchasing processes, and prepare executive business reviews.