Senior Software Architect — Payments & Enterprise APIs

PayJunction; California; Hybrid; USD 240.000 - 275.000; Vollzeit

Benefits dieser Stelle

Health, dental, and vision benefits (6

401k with 6% match

Home office equipment stipend

Annual Learning Stipend

Quarterly team budgets

Zusammenfassung

PayJunction is seeking a Software Architect to design and build enterprise features and payment integrations our partners rely on, moving open-ended problems from a blank page to production while continuing to write Java.

You’ll lead high-impact initiatives with Product and Engineering leadership, design critical systems end-to-end, and mentor engineers, all within a flexible work model that supports remote, in-office, or hybrid arrangements across the U.S. market.

Qualifikationen

• 10+ years of professional software engineering with hands-on ownership of production systems.
• 5+ years of architecture experience as an Architect, Staff, or Principal Engineer, owning designs that span multiple services or teams.
• 5+ years of Java, including web frameworks and the JVM ecosystem, with production Java written in the last 12 months.
• 5+ years mentoring senior and mid-level engineers through code review, design review, and pairing; formal people management not required.
• Production experience with AWS, Linux (Ubuntu/Debian), relational databases (MySQL preferred), CI/CD (Jenkins or comparable), infrastructure as code (Puppet or similar), and observability tooling (Splunk, Grafana, Prometheus, or comparable).
• Designed and operated a high-availability transactional system where downtime or data loss had direct financial or customer impact.
• Currently uses AI coding assistants or agents (Claude Code, Copilot, Cursor, or comparable) in day-to-day production work.
• BS in Computer Science or equivalent applied experience.
• Preferred: payments or fintech experience such as card processing, gateways, or acquiring; experience designing within a PCI DSS-regulated environment.

Aufgaben

• Lead open-ended initiatives from a blank page to production with Product and Engineering leadership, breaking the problem down, directing other engineers, and making the calls that keep the team moving.
• Personally design the highest-risk systems end to end, writing design docs clear enough to build from, with requirements, trade-offs, and failure modes stated up front.
• Stay hands-on: write production Java every sprint, review pull requests promptly, and hold work to a test strategy built for high-risk payment paths.
• Mentor senior engineers through design reviews, code reviews, and pairing, growing the team's design capability so not every decision runs through you.
• Architect enterprise capabilities such as SSO, role-based access, audit trails, and multi-merchant hierarchy, plus versioned APIs partners can build on without breaking changes.
• Keep the core platform processor-agnostic and our processor integrations performing optimally, from message mapping through reversals and settlement reconciliation.
• Design for reliability and PCI from the start: define SLOs and monitoring, remove single points of failure, lead root-cause analysis, and shrink PCI scope by design.
• Raise the team's delivery velocity with AI-assisted development, setting review and security guardrails for AI-generated code.

Kenntnisse

Software engineering

Architecture experience

Java

Mentoring

AI-assisted coding

Ausbildung

BS in Computer Science

Tools

AWS

Linux

MySQL

CI/CD

Puppet

Splunk

Grafana

Prometheus

Jobbeschreibung

PayJunction is seeking a Software Architect to design and build enterprise features and payment integrations our partners rely on, moving open-ended problems from a blank page to production while continuing to write Java.

You’ll lead high-impact initiatives with Product and Engineering leadership, design critical systems end-to-end, and mentor engineers, all within a flexible work model that supports remote, in-office, or hybrid arrangements across the U.S. market.