WEX · 1 day ago
Principal Software Engineer - Data
San Francisco, CA
Full-time
Onsite
Lead/Staff
$195K/yr - $260K/yr
12+ years expWEX is transforming into a data-driven enterprise through its modern Data-as-a-Service (DaaS) platform. As a Principal Staff Software Engineer, you will shape WEX’s DaaS platform, driving the unification of data acquisition, semantic modeling, and data products while ensuring they operate as a coherent and scalable foundation for analytics and AI.
Financial ServicesFinTechPaymentsSoftware
Responsibilities
Architect the DaaS platform end-to-end: Define the next generation of WEX’s enterprise data stack spanning ingestion, semantic data modeling, metadata, and product delivery
Establish platform standards: Set reusable frameworks for ingestion, modeling, lineage, observability, and access control that accelerate adoption across domains
Guide technical strategy at scale: Partner with senior engineering, product, and business leaders to align data architecture with WEX’s strategic objectives. Solve for scale, reliability, and trust: Design systems that handle billions of records, guarantee semantic consistency, and deliver auditable, governed data assets. Mentor and multiply: Coach senior staff engineers and architects, instilling best practices in distributed systems, platform reliability, and semantic clarity
Drive innovation: Explore and incorporate modern open-source and cloud-native technologies (e.g., Spark, Iceberg, Kafka, Delta, DBT, Ray, ML-ready data services)
Be the bridge: Collaborate across Data Acquisition, Semantic Modeling, Data Products, and Governance teams to ensure WEX’s data is trusted, consistent, and usable across every business domain
Qualification
Required
12–15+ years of experience in software or platform engineering, with a proven track record of building and scaling large-scale data platforms
Expertise in distributed systems, data acquisition, and semantic modeling, with architectural ownership of systems processing tens of millions to billions of records per day
Demonstrated ability to set cross-domain architectural standards and influence adoption across multiple engineering teams
Strong background in data lifecycle management (versioning, auditability, observability, lineage, reproducibility)
Deep experience with modern data ecosystems: streaming (Kafka, Flink), batch (Spark, DBT), storage (Iceberg, Delta), orchestration (Airflow, Dagster), and APIs
Exceptional communication and leadership skills—you can inspire engineers, influence executives, and build consensus across technical and business stakeholders
A passion for creating platforms that endure: trusted, consistent, and empowering for analytics, AI, and products enterprise-wide
Benefits
Health, dental and vision insurances
Retirement savings plan
Paid time off
Health savings account
Flexible spending accounts
Life insurance
Disability insurance
Tuition reimbursement
And more
Company
WEX
Wex is a financial technology service provider for fleet, travel and healthcare industries.
5001-10000 employees
H1B Sponsorship
WEX has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (22)
2024 (10)
2023 (12)
2022 (20)
2021 (14)
2020 (18)
Funding
Current Stage
Public CompanyTotal Funding
$900MKey Investors
Warburg Pincus
2025-02-25Post Ipo Debt· $500M
2020-06-30Post Ipo Equity· $90M
2020-06-30Post Ipo Debt· $310M
Leadership Team
Melissa Smith
Chair and Chief Executive Officer
Sachin Dhawan
Chief Technology Officer
Recent News
2026-01-03
2025-12-05
2025-12-02
Company data provided by crunchbase