Principal Partner Solutions Engineer — API‑Driven Fintech

BILL; San Jose (CA); Hybrid; USD 20,800 - 260,000; Full time

Benefits offered by this job

Health insurance

401(k) retirement plan

Employee stock purchase program

Job summary

BILL in San Jose, CA is seeking a Principal Partner Solution Engineer for our Partner Embed Platform to transform financial ecosystems through integrations of Payments, AP, AR, and Spend management. You will collaborate with partners and internal teams to scope, design, and implement seamless solutions that drive operational excellence.

You will lead workshops, document architectures, and guide technical projects from inception to completion, with deep experience in API management, cloud

Qualifications

• 12+ years in technical/consulting roles within AP/AR or financial services.
• Experience delivering end-to-end architectures in multi-stakeholder environments.
• Proven ability to work with external clients and partners on complex projects.
• Strong client-facing skills and ability to present recommendations clearly.

Responsibilities

• Lead and influence technical discussions with senior stakeholders.
• Run workshops with partners and deliver technical documentation and training.
• Lead architecture sessions to ensure quality standards are met.
• Manage multiple projects with timely, within-budget delivery.
• Coordinate across cross-functional teams including IT and product managers.

Skills

API integration

REST/SOAP

Cloud platforms

Java

Python

Job description

BILL in San Jose, CA is seeking a Principal Partner Solution Engineer for our Partner Embed Platform to transform financial ecosystems through integrations of Payments, AP, AR, and Spend management. You will collaborate with partners and internal teams to scope, design, and implement seamless solutions that drive operational excellence.

You will lead workshops, document architectures, and guide technical projects from inception to completion, with deep experience in API management, cloud