Principal Software Engineer - CXDX

Marqeta is looking for a talented Principal Software Engineer to shape the future of our Customer Experience & Developer Experience (CXDX) platform. This highly strategic role combines deep technical expertise with organizational leadership and influence. You will architect and deliver software solutions spanning our Connected App Ecosystem; including White Label Apps, Marqeta Dashboard, Live Agent Portal, Docs, IVR, and UX Toolkit SDKs with an emphasis on reliability, scalability, and a unified developer and end-user journey.

This role is central to Marqeta’s transformation from powering individual products to scaling platform-wide solutions that define how we build, launch, and manage financial services.

The CXDX org builds the connective tissue of Marqeta’s platform: the White Label Apps, Marqeta Dashboard, Live Agent Portal, documentation, SDKs, and support systems that enable faster integration, smarter launches, and scalable operations. We ensure Marqeta remains the most developer-friendly and trusted platform in embedded finance.

We work Flexible First. This role can be performed remotely within the United States. We’d love for you to join us!

The Impact You'll Have

• Define and drive the architecture of mission-critical systems, setting long-term technical direction and ensuring scalability, security, and sustainability across the platform.
• Lead large-scale, cross-functional initiatives that span multiple teams and domains, ensuring alignment with business priorities and delivering high-impact outcomes.
• Serve as a technical advisor to senior leadership, providing insight on technical risks, trade-offs, and innovation opportunities that shape product and business strategy.
• Raise the technical bar across the organization by mentoring engineers at all levels, fostering a culture of technical rigor, collaboration, and continuous learning.
• Partner with engineering managers and product leaders to ensure roadmap decisions align with architectural goals and long-term scalability.
• Actively influence and contribute to the creation and evolution of the company’s engineering principles, tooling, and standards.
• Conduct technical deep-dives into system architecture, identifying opportunities for performance improvements, technical simplification, and operational efficiency.
• Represent engineering in key cross-functional forums, helping the organization navigate complex decisions around infrastructure, platform capabilities, and product development.
• Act as a steward of engineering quality—promoting clean code, reliable systems, robust testing, and sustainable development practices.
• Drive innovation across teams, leading explorations of emerging technologies and ensuring Marqeta remains on the forefront of industry standards and capabilities.

Who You Are

• 10+ years of hands-on software engineering experience, with a track record of designing and delivering complex distributed systems at scale.
• 3+ Experience with payments or the FinTech space.
• Strong experience across multiple technology stacks (e.g., Java, Python, Go, ReactNative, Swift, Khotlin) and proficiency in designing scalable APIs, microservices, and cloud-native applications.
• Demonstrated ability to drive architectural decisions that balance short-term trade-offs with long-term goals.
• Proven leadership in complex initiatives spanning infrastructure, product development, and platform evolution.
• Excellent communication and influencing skills, with the ability to engage both technical and non-technical audiences.
• Experience shaping technical strategy and mentoring senior staff and principal engineers across multiple domains and teams.
• Adept at solving ambiguous problems, balancing innovation with execution, and leading teams through change and complexity.
• A passion for system reliability, observability, and building secure, maintainable systems.
• Strong understanding of regulatory and security requirements in the financial domain is a plus.

Nice to haves

• Hands-on experience with AWS, Kubernetes, and other modern cloud platforms.
• Experience with Terraform and infrastructure-as-code practices.
• Expertise in containerization and orchestration tools.
• Familiarity with AI assistants (Amazon Q, Bedrock RAG, Hemingway) and integrating them into dev workflows.
• Track record of influencing technical direction across a large engineering org or multiple product lines.
• Contributions to open source or industry thought leadership.

Your Manager

• Sarah Dulski – Sr. Dire