Senior Software Engineer - Product, Network, and AI

Company: Bill.com
Location: Campbell
Posted on: December 30, 2025

Job Description:

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 By replacing outdated financial processes with innovative tools, we help businesses—from startups to established brands—make smarter decisions and gain control of their operations.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. Were 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. Make your impact within a rapidly growing Fintech Company Join BILL as a Senior Software Engineer on the Product, Network, and AI team and be at the forefront of transforming how businesses manage supplier payments. Our mission is to simplify and accelerate supplier payments nationwide, empowering large enterprises to streamline operations through our flagship Supplier Payments Plus (SPP) offering. In this role, you’ll architect and scale innovative payment automation features, tackling real-world challenges that touch millions of transactions daily. The Supplier Payments Plus product delivers robust solutions for high-volume suppliers, providing advanced payment aggregation, detailed reconciliation reports, and multi-center support; all designed for seamless integration and operational efficiency. By joining this collaborative and high-performing group, you’ll directly influence BILL’s vision to empower businesses and drive financial automation, freeing finance teams to focus on strategy and growth rather than manual processes. Responsibilities: • Collaborate cross-functionally with product managers, designers, and engineering peers to deliver impactful supplier payment features and enhancements • Design, develop, and maintain scalable software solutions with a strong emphasis on reliability and performance • Analyze and troubleshoot complex system issues and provide sustainable, durable solutions • Apply and champion best practices in software development, including code reviews, automated testing, and documentation • Mentor teammates and share deep technical knowledge to elevate team capability • Drive continuous improvement through innovative processes and technical approaches • Translate business requirements into robust technical specifications and actionable development plans We’d love to chat if you have: • Bachelor’s degree in Computer Science or a related field (Master’s a plus); typically 5 years of professional software engineering experience • Strong understanding of large-scale web applications and distributed systems—including deployment, capacity planning, monitoring, and incident management • Proven ability to evaluate trade-offs and collaborate across teams on complex technical and business initiatives • Experience driving technical direction within multi-entity SaaS architectures and modern software development life cycles • Proficiency in modern programming languages such as Java, Typescript/Node.js (the typical stack for BILL’s supplier/payment platforms) • Hands-on experience with React or similar frontend frameworks, especially in building robust portals or payment interfaces (nice to have) • Working knowledge of AWS (Lambda, DynamoDB, S3, SNS/SQS), microservices, API gateway patterns, automated testing frameworks, monitoring, and CI/CD technologies (e.g., GitHub Actions, Jenkins) Visa Sponsorship: Please note that this position is not eligible for visa sponsorship. Applicants must have authorization to work in the United States without requiring visa sponsorship now or in the future. The estimated salary range for this role is noted below for our San Jose based role. Our ranges for each role and job level are based on a variety of factors including candidate experience, expertise, and geographic location and may vary from the amounts listed above. The role is also eligible for a competitive benefits package that includes: medical, dental, vision, life and disability insurance, 401(k) retirement plan, flexible spending & health savings account, paid holidays, paid time off, and other company benefits. San Jose pay range $148,800 - $178,500 USD What’s in it for you? Redefining how businesses automate their work is a fast-paced, exciting, and fun environment. But we also have benefits and perks to ensure the magic isn’t only experienced by our customers, but by our employees as well. Here is a preview of some of the amazing benefits here at BILL: • 100% paid employee health, dental, and vision plans (choose HMO, PPO, or HDHP) • HSA & FSA accounts • Life Insurance, Long & Short-term disability coverage • Employee Assistance Program (EAP) • 11 Observed holidays and wellness days and flexible time off • Employee Stock Purchase Program with employee discounts • Wellness & Fitness initiatives • Employee recognition and referral programs • And much more

Keywords: Bill.com, Mountain View , Senior Software Engineer - Product, Network, and AI, IT / Software / Systems , Campbell, California