Principal Software Engineer, Smb &fs

PayPal PayPal · Fintech · San Jose, CA +4 · Software Engineering

Principal Software Engineer at PayPal focused on architecting AI-native commerce capabilities, including agentic commerce and intelligent payment orchestration, for SMB and Financial Services platforms. The role involves leading the technical vision, cloud-native migration, and setting platform standards for large-scale distributed systems in a regulated fintech environment.

What you'd actually do

  1. Increases results & effectiveness of all software engineers in a large domain
  2. Sets the technology roadmap for a domain
  3. Adapts their role to the need, selecting the most effective means of realizing their technical goals
  4. Provides advice and counsel to senior executives within PayPal, influencing the development of multi-year business strategies
  5. Exercises wide latitude in determining objectives and approaches to assignments and takes initiative to achieve results

Skills

Required

  • 10+ years relevant experience and a Bachelor’s degree OR Any equivalent combination of education and experience.
  • Own the multi‑year architecture and migration strategy moving SMB & FS platforms from on‑prem to cloud‑native
  • Define platform standards (APIs, contracts, versioning, idempotency, SLOs, operational readiness)
  • Partner with product, risk, compliance, data, and finance to align technical choices to business outcomes
  • Grow Staff+ engineering capability: lead architecture reviews, create reusable frameworks and reference designs, and raise the quality bar across multiple teams.
  • Track record designing and shipping large‑scale, low‑latency distributed systems in payments/fintech or similarly regulated, high‑availability domains.
  • Strong security and compliance background (PCI DSS, SOC2, PSD2/SCA); experience architecting for auditability, explainability, and controls.

Nice to have

  • GCP expertise a plus
  • depth in container orchestration, service mesh, infrastructure‑as‑code, and automated delivery.
  • Deep understanding of the merchant payments stack: acquiring/facilitation, tokenization, checkout, authorization/capture, disputes/chargebacks, settlement & reconciliation, payouts.
  • Expertise in event‑driven architecture and data platforms (e.g., Kafka/Pub/Sub, stream processing, feature stores, real‑time analytics) supporting decisioning at scale

What the JD emphasized

  • Own the technical vision and execution for platforms powering SMBs such as merchant payments, settlement & reconciliation, payouts, merchant services and developer experiences, capital/working‑capital lending, and embedded finance.
  • Lead the multi‑year evolution from on‑prem to cloud‑native architectures.
  • Architect AI‑native commerce capabilities—including agentic commerce (autonomous, tool‑using AI that reasons and acts across buyer–merchant journeys), real‑time risk/underwriting, and intelligent payment orchestration.
  • Operate across org boundaries to set platform standards, influence executive strategy, and increase engineering leverage at scale.
  • Own the multi‑year architecture and migration strategy moving SMB & FS platforms from on‑prem to cloud‑native; define milestones, re-architect for cloud-native, and land secure, compliant, highly available services.
  • Define platform standards (APIs, contracts, versioning, idempotency, SLOs, operational readiness) that unify payments, risk, onboarding, settlement, reconciliation, payouts, and capital experiences.
  • Partner with product, risk, compliance, data, and finance to align technical choices to business outcomes; translate complex trade‑offs into clear, executive‑ready decisions.
  • Grow Staff+ engineering capability: lead architecture reviews, create reusable frameworks and reference designs, and raise the quality bar across multiple teams.
  • Track record designing and shipping large‑scale, low‑latency distributed systems in payments/fintech or similarly regulated, high‑availability domains.
  • Hands‑on experience building and operating production AI/ML-powered capabilities for commerce.
  • Strong security and compliance background (PCI DSS, SOC2, PSD2/SCA); experience architecting for auditability, explainability, and controls.

Other signals

  • Architect AI-native commerce capabilities—including agentic commerce (autonomous, tool-using AI that reasons and acts across buyer–merchant journeys)
  • real‑time risk/underwriting
  • intelligent payment orchestration
  • Hands‑on experience building and operating production AI/ML-powered capabilities for commerce