Seeking to fill in a Ruby and Java Principal Software Engineer with Newline for immediate remote contract to hire opportunity with my direct client in Cincinnati OH
If interested , share your word document resume, work authorization, expected hourly pay rate, current location, availability for EST (remote work) , skill stack and LinkedIn.
Reach me for more details. thanks.
If not, Appreciate any referrals.
TECHNICAL SKILLS
Must Have
- AWS
- Ruby (Rails) and/or Java
- Strong experience debugging production issues end-to-end (code → infra → data → dependencies)
JOB DESCRIPTION
Principal Software Engineer, Newline
About Newline
Newline™ by Fifth Third is an enterprise-grade embedded finance platform powering the next generation of financial products. We provide API-first infrastructure and managed services that enable startups and enterprises to build, launch, and scale compliant banking, payments, and lending experiences.
From fintech and payments to banking-as-a-service and lending platforms, Newline helps clients deliver financial capabilities directly within their products. Backed by Fifth Third’s long legacy of innovation—from early payment networks to scaling global processing infrastructure—Newline combines world-class banking, risk management, and technology to unlock modern financial ecosystems.
GENERAL FUNCTION
We’re hiring a Principal Software Engineer to operate at the intersection of software engineering, production systems, and embedded payments—a hands-on technical leader who thrives in complex, high-scale environments and wants to directly influence how production systems behave.
This is not a traditional support role. You’ll be embedded with our operations function as an engineer, partnering across product, SRE, and platform teams to diagnose complex issues, improve system reliability, and turn production learnings into durable platform improvements.
If you’re someone who enjoys debugging distributed systems, understanding transaction lifecycles, and making systems fundamentally more reliable over time, this is a high-impact role.
ESSENTIAL DUTIES AND RESPONSIBILITIES
What you’ll Do
You will focus on improving system reliability by diagnosing complex production issues and driving systemic fixes across the platform:
Lead complex production triage and incident response across APIs, payment flows, distributed services, infrastructure, and data layers
Debug real-world issues involving transaction lifecycles, integrations, and system dependencies
Partner with engineering to turn incidents into permanent fixes, not recurring problems
Improve platform reliability through code changes, automation, observability, and better system design
Build and enhance:
Monitoring and alerting strategies
Runbooks and diagnostic workflows
Operational tooling and automation
Work across a mixed stack including Ruby (Rails), Java, AWS, APIs, and data systems
Help teams design systems that are observable, debuggable, and resilient from day one
Mentor engineers and influence best practices across engineering, SRE, and operations
MINIMUM KNOWLEDGE, SKILLS, AND ABILITIES REQUIRED
8+ years in software engineering, SRE, production engineering, or building and operating distributed systems
Strong experience debugging production issues end-to-end (code → infra → data → dependencies)
Experience with:
Ruby (Rails) and/or Java services
AWS and cloud-native environments
APIs, microservices, and distributed systems troubleshooting
SQL and data-level investigation
Hands-on experience with observability tools (Splunk, Datadog, New Relic, etc.)
Deep understanding of:
System behavior in production
Fault isolation
Performance and resiliency patterns
Ability to operate calmly and effectively during incidents and escalations
Strong communication skills—comfortable explaining complex issues to technical and non-technical stakeholders
Experience in payments, fintech, or regulated environments is strongly preferred
Bachelor’s degree in Computer Science, Engineering, or equivalent experience
WHY JOIN NEWLINE?
Help operate and scale a modern embedded finance platform backed by a top U.S. bank
Work at the intersection of fintech innovation, real-time payments, operational excellence, and enterprise-grade reliability
Solve complex technical problems across payment flows, application services, infrastructure, observability, and client-impacting operations
Be part of a culture focused on ownership, learning, automation, and continuous improvement.
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