Principal Software Engineer - Payments Platform

BILL•San Jose, CA

About The Position

Innovate with purpose At BILL, we believe in empowering the businesses that drive our economy. By replacing outdated financial processes with innovative tools, we help businesses—from startups to established brands—make smarter decisions and gain control of their operations. And we don’t stop there: we’re creating the future of financial automation so businesses can spend more time on what matters. Working here means you become part of a vision-driven team that’s ready to tackle challenges and build cutting-edge solutions. We value purpose, drive, and curiosity—and we thrive in a fast-paced, ever-changing environment. Whether in one of our offices in San Jose, CA, Draper, UT, or working remotely, BILLders collaborate to deliver real impact for businesses that need more time in their busy weeks. BILL builds high performing teams and we seek to hire the best talent for every role. We're committed to building a workplace that fosters inclusion and diverse perspectives, valuing each person’s unique skills and experiences. We’d love to hear from you—you might be just what we’re looking for, whether in this role or another. ✨ Let’s give businesses more time for what matters. This position is based in San Jose, CA Make your impact within a rapidly growing Fintech Company Resilient and innovative, the Payments Team functions as the backbone and revenue driver for Bill, playing a mission-critical role in moving over $300B+ annually across various payment methods. Payments team is doubling down on platform perspective and innovation to facilitate scaling needed for 10x growth for Bill, leveraging modernization and Gen AI technologies. If you're looking for a company that values work-life balance, offers career growth, values innovation, and provides endless opportunities to solve new challenges that make a difference in people's everyday lives, then Bill might be a place for you to explore! Leadership qualities: Proven thought leadership, persuasive abilities, passion for excellence, and humility to collaborate across teams. Hands-on experience: Self-driven engineer with a track record of building and scaling for diverse workloads. Payments modernization: Expertise in modernizing cloud platform infrastructure to ensure stability and reliability. Strong fundamentals: Solid foundation in software engineering and distributed systems, with a focus on scale, safety, and engineering excellence. Diverse Payments, Risk, Financial Services experience. Problem-solving mindset: High standards of excellence, backed by experience, with an incremental approach to tackling big challenges. Autonomy: Ability to independently choose areas for deep technical exploration with a focus on impactful improvements. Collaboration skills: Skilled at working across teams to foster a collaborative environment that drives innovation. Passion for excellence: Commitment to continuous improvement and alignment with the company’s goals and values.

Requirements

Bachelor's degree in Computer Science or equivalent — advanced degree preferred
Minimum of 15 years of experience in fintech building at scale
Hands-on with programming language Java
Proficient in cloud computing infrastructure and the underlying concepts
Excellent problem-solving skills and the ability to work in a fast-paced environment
Strong communication (written and verbal) skills, with the ability to effectively convey complex concepts to technical and non-technical stakeholders
Experience leveraging Gen AI technologies to accelerate software engineering by designing prompts, rigorously evaluating outputs, and integrating LLMs