Senior Java Software Architect Remote Payments AI-Driven

PayJunction; Connecticut; Remote; USD 190,000 - 260,000; Full time

Benefits offered by this job

Health, dental, and vision coverage

Disability coverage

8 paid holidays

2 paid floating holidays

Home office stipend

Remote, in-office, or hybrid work

Job summary

PayJunction is seeking a Software Architect to design and build the enterprise features and payment integrations our partners rely on to move billions of dollars a year, taking open-ended problems from a blank page to production while still writing Java yourself.

PayJunction is relentless and emphatical about helping others. While building dreams, entrepreneurs and business professionals will face many challenges along the way. Our dream is to help you realize yours.

Qualifications

• 10+ years of professional software engineering, with hands-on ownership of production systems.
• ~5+ years of Java, including web frameworks and the JVM ecosystem, with production Java written in the last 12 months.
• ~ 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.

Responsibilities

• 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.
• 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.

Skills

Java expert

Web frameworks

JVM ecosystem

AWS

Linux

Relational DBs

CI/CD

IaC

Observability

AI-assisted development

Education

BS in CS

Tools

Claude Code

Copilot

Cursor

Jenkins

Puppet

Splunk

Grafana

Prometheus

Job description

PayJunction is seeking a Software Architect to design and build the enterprise features and payment integrations our partners rely on to move billions of dollars a year, taking open-ended problems from a blank page to production while still writing Java yourself.

PayJunction is relentless and emphatical about helping others. While building dreams, entrepreneurs and business professionals will face many challenges along the way. Our dream is to help you realize yours.