Staff Software Engineer - Subscription and Billing

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 By replacing outdated financial processes with innovative tools, we help businesses—from startups to established brands—make smarter decisions and gain control of their operations.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. Make your impact within a rapidly growing Fintech Company Join BILL’s Subscription and Billing team, where we drive innovation and deliver seamless financial solutions that empower businesses to thrive. As a Staff Software Engineer, you will play a pivotal role in architecting and building scalable products that accelerate user acquisition, engagement, and retention. This is an opportunity to shape the future of BILL’s platform, collaborating with talented engineers and cross-functional partners to solve complex challenges and deliver measurable business impact.

Requirements

Proven expertise in designing and building scalable, high-impact software products in a fast-paced environment
Strong technical leadership skills, with experience guiding teams through complex architectural decisions and project delivery
Excellent collaboration and communication abilities, with a track record of working effectively across disciplines
A problem-solving mindset, with the ability to break down complex challenges and deliver innovative solutions that align with business goals
Commitment to fostering an inclusive, growth-oriented team culture
Bachelor’s in Computer Science or related field (Master’s a plus); typically 8+ years of relevant industry experience
Strong understanding of large-scale web applications and systems, including operational aspects (deployment, capacity planning, monitoring, incident management)
Demonstrated ability to reason about trade-offs and collaborate across teams and functions on important technical and business initiatives
Experience driving technical direction in multi-entity SaaS architectures and working with modern software development lifecycle practices
Proficiency in: Modern programming languages such as, Java, Typescript/Node.js (typical stack at BILL for supplier and payments platforms)
Cloud & distributed systems experience: AWS (Lambda, DynamoDB, S3, SNS/SQS, IAM roles and permissions)
Microservices architecture + API gateway patterns
Testing, monitoring, and documentation tools: Unit and integration test frameworks (Jest, PyTest, JUnit, etc.)
Application monitoring, logging, and incident response best practices
CI/CD technologies standard within BILL (likely GitHub Actions, Jenkins, or similar)

Nice To Haves

React or similar frontend frameworks for UI development and supplier portal enhancements nice to have

Responsibilities

Design, develop, and deploy robust, scalable software solutions that directly drive product growth and user engagement
Lead technical architecture discussions and set engineering standards for the team, ensuring high-quality, maintainable code
Collaborate cross-functionally with Product, Design, Data, and Marketing to identify growth opportunities and translate them into technical solutions
Mentor and guide engineers, fostering a culture of technical excellence, continuous learning, and innovation
Analyze complex problems, propose effective solutions, and implement best practices to optimize system performance and reliability
Drive experimentation and rapid iteration, leveraging data to inform decisions and maximize product impact
Champion BILL’s values by promoting an inclusive, collaborative, and high-performance team environment