Principal Software Engineer

Overview

We're seeking a Principal Software Engineer for our Pleasanton, CA office to architect and implement scalable platform solutions that power seamless recipient experiences across our global network. You'll own critical systems from conception through production, working closely with Product Management to transform growth strategies into robust technical implementations. This role combines deep technical expertise with strategic thinking to build the infrastructure that enables millions of recipients to engage with our digital ecosystem.

Note:

Hybrid role

• Architect, design, and maintain large-scale distributed systems supporting order management, payment processing, and customer engagement
• Lead technical decision-making for API-first platforms that integrate with multiple business systems and external partners
• Drive performance optimization and scalability improvements across core revenue-generating platforms
• Establish technical roadmaps and guide implementation across multi-year platform evolution

• Design and implement secure, reusable widget architectures for card servicing, payment acquisition, and customer personalization
• Build embeddable solutions that maintain PCI compliance while enabling rapid deployment across web and mobile applications
• Create integration frameworks that connect catalog management, order processing, payments, fraud/risk, and settlement systems
• Develop proof-of-concept solutions for emerging business requirements and customer engagement opportunities

• Champion security best practices including threat modeling, secure authentication frameworks, and data protection protocols
• Design PCI-compliant architectures using tokenization, sandboxed iframes, and strict access controls
• Implement security layers including rate limiting, bot protection, and vulnerability assessments
• Ensure all platform solutions meet enterprise security standards and regulatory requirements

• Partner with Product Management to translate growth funnel strategies into technical implementations
• Work closely with cross-functional teams (Payments+, Fraud/Risk, Infosec) to deliver integrated solutions
• Mentor software engineers and provide technical guidance on architecture decisions
• Lead incident response and post-mortem analysis to improve system reliability

• Drive adoption of modern infrastructure technologies including serverless computing (AWS Lambda), API gateways, and cloud-native architectures
• Implement observability solutions for monitoring, metrics, and performance analysis
• Establish development best practices and tooling that accelerate team productivity
• Author comprehensive technical documentation and operational runbooks

• +12 years of enterprise software development experience with focus on large-scale, distributed systems
• Proven track record of architecting platforms that process high transaction volumes with strict uptime requirements
• Experience with payment systems, e-commerce platforms, or financial technology solutions preferred
• Background in API design, microservices architecture, and cloud-native development

• Strong proficiency in Java
  , Spring, nodejs
• Hands-on experience with REST APIs, GraphQL and modern web architectures
• Solid understanding of software engineering fundamentals, design patterns, and scalable systems
• Demonstrated ability to own complex systems and drive technical strategy
• Excellent debugging, troubleshooting, and performance optimization skills
• Comfortable providing production support as needed
• Experience in CI/CD pipelines and cloud infrastructure (AWS, GCP, or similar)
• Familiarity with observability tools (e.g. New Relic, Splunk)
• Prior experience in user-facing or enterprise-scale platforms

• Strong communication and cross-team collaboration skills
• Experience mentoring engineers and driving technical decision-making across teams
• Proven ability to balance technical excellence with business requirements and delivery timelines
• Track record of successful cross-functional collaboration in fast-paced environments

• Systems thinking approach to complex technical challenges
• Customer-focused mindset with understanding of user experience…