Senior Software Engineer

Isupark; Johnston (IA); On-site; USD 140,000 - 190,000; Full time

Job summary

JD IT Financial in Johnston, IA seeks a Staff Software Engineer to lead revolver credit and merchant experience platforms. You will drive end-to-end architecture for backend systems in Java and Node.js, and shape customer-facing apps using React and Next.js.

You will own cloud architecture on AWS, enforce security/compliance standards, and collaborate with risk, product, and design leaders to deliver scalable, reliable financial software.

Qualifications

• 5+ years of hands-on Java backend development with Spring Boot and REST APIs.
• 5+ years experience in Node.js/TypeScript for distributed services.
• Proven ownership of large-scale, highly available backend systems.
• Strong AWS cloud architecture knowledge including ECS/EKS, Lambda, API Gateway.
• Experience with Kafka/RabbitMQ, caching, and external service dependencies.
• Front-end experience with Next.js/React for enterprise applications.
• Relational and NoSQL database design and optimization.
• Ability to drive architecture decisions and lead cross-team reviews.

Responsibilities

• Define and drive end-to-end technical architecture for revolving credit and merchant platforms.
• Lead design and evolution of core backend systems with Java and Node.js.
• Set architectural direction for customer-facing React/Next.js apps.
• Evaluate architectural options, identify risks, and provide clear technical direction.
• Own AWS cloud architecture and operational strategy with emphasis on reliability and cost.
• Collaborate with Product, Design, Risk, and Compliance to translate requirements into scalable solutions.
• Define security and compliance standards, including PCI considerations.
• Drive platform consistency through shared services and API standards.
• Promote production readiness with monitoring, incident response, and DR planning.

Skills

Java

Node.js

AWS & Cloud Architecture

Front-End Architecture (Next.js/React)

Databases & Data Architecture

Education

Bachelor’s degree in Computer Science or related

Tools

Kafka

RabbitMQ

NestJS

Express

Terraform / CloudFormation / AWS CDK

New Relic

CI/CD tooling

Job description

As a Staff Software Engineer – Revolving Credit & Merchant Experience for JD IT Financial located in Johnston, IA , you will provide technical leadership across multiple teams and initiatives, with accountability for system design, engineering excellence, and long-term platform evolution. Additionally, you will:

Define and drive end-to-end technical architecture for revolving credit and merchant experience platforms, ensuring scalability, resilience, security, and regulatory compliance across backend, frontend, and cloud infrastructure

Lead design and evolution of core backend systems built with Java and Node.js, supporting complex financial workflows including credit origination, underwriting, merchant onboarding, payments, pricing, and servicing lifecycle management

Establish architectural direction for customer-facing applications using React and Next.js, ensuring high performance, accessibility, consistency, and seamless user experiences across merchant and credit journeys

Drive early technical discovery and decision-making, evaluating architectural options, identifying risks, aligning trade-offs, and providing clear technical direction to enable predictable delivery by engineering teams

Own cloud architecture and operational strategy on AWS, defining reference architectures and best practices leveraging services such as ECS/EKS, Lambda, API Gateway, DynamoDB, RDS, SQS/SNS, with a strong focus on reliability, security, observability, and cost optimization

Partner closely with Product, Design, Risk, Compliance, and Business leaders to translate complex business and regulatory requirements into cohesive, scalable technical solutions that balance innovation, speed, and risk

Define and enforce security and compliance standards, ensuring secure handling of financial data through strong authentication and authorization models, encryption strategies, PCI compliance, auditability, and defense-in-depth practices

Drive platform consistency and reuse by defining shared services, common libraries, API standards, UI frameworks, and architectural patterns across merchant and credit ecosystems

Set expectations for production readiness and operational excellence, including service-level objectives, monitoring and alerting standards, incident response practices, disaster recovery strategies, and continuous resilience improvements

Act as a technical multiplier, mentoring senior engineers, influencing cross-team design decisions, leading design and architecture reviews, and raising the overall technical bar of the organization

VISA Sponsorship is NOT available for this position

What Skills You Need

• Java (5 or more Years of Experience)
• • Deep expertise in designing large-scale, distributed, and high-availability backend systems using modern Java (8 or more)
• • Mastery of the Spring / Spring Boot ecosystem, with hands-on ownership of REST APIs, security architecture, configuration management, and service frameworks
• • Advanced knowledge of concurrency, JVM internals, performance tuning, memory management, and garbage collection
• • Proven history of owning system architecture, leading cross-team technical reviews, and driving complex production issue investigations and root cause analysis
• • Strong experience integrating messaging platforms (Kafka, RabbitMQ), caching strategies, and external/internal service dependencies

• Node.js (5 or more Years of Experience)
• • Expert-level experience delivering event-driven, distributed backend services using Node.js and TypeScript at scale
• • Deep understanding of asynchronous programming, event loop mechanics, non-blocking I/O, and performance optimization patterns
• • Proven leadership in designing API platforms, including REST and GraphQL, shared middleware, and standardized security models
• • Extensive experience with frameworks such as NestJS, Express, or Fastify, including establishing architectural and coding standards across teams
• • Ownership of observability, reliability engineering, and major production incident leadership

• AWS & Cloud Architecture (5 or more Years of Experience)
• • Hands-on leadership designing and governing cloud-native, multi-service architectures on AWS.
• • Expert knowledge of EC2, ECS/EKS, Lambda, S3, RDS, DynamoDB, API Gateway, IAM, and related services
• • Proven ability to define architectures that are secure, highly available, fault tolerant, and cost efficient, aligned with AWS Well-Architected principles
• • Strong experience setting standards for Infrastructure as Code using Terraform, CloudFormation, or AWS CDK, and CI/CD automation
• • Ownership of cloud security posture, observability frameworks, compliance controls, and disaster recovery planning

• Front-End Architecture (Next.js / React – 5 or more Years)
• • Proven expertise architecting and scaling enterprise-grade frontend platforms using Next.js and React
• • Deep knowledge of SSR, SSG, server components, routing strategies, and frontend performance optimization at scale
• • Experience defining frontend architecture standards, shared component libraries, and integration patterns with backend services
• • Ownership of front-end deployment strategies, build pipelines, and production monitoring and troubleshooting

• Databases & Data Architecture (5 or more Years of Experience)
• • Expert-level experience designing relational data models using PostgreSQL, MySQL, or Oracle, including transactional integrity and scalability concerns
• • Advanced knowledge of SQL optimization, indexing strategies, transaction isolation, and data consistency models
• • Strong experience with NoSQL and distributed data stores including DynamoDB, MongoDB, and Redis, with sound architectural decision-making
• • Proven ability to design data-intensive systems, manage schema evolution, and ensure reliability, availability, and recoverability at scale
• • Leadership in defining caching, replication, backup, and failover strategies

What Makes You Standout

Strong background in FinTech, particularly Revolving Credit, Merchant POS, Payments, or Lending Platforms

Experience applying AI-assisted development tools, including Copilot, LLMs, and emerging AI-driven engineering workflows

Deep familiarity with observability platforms such as New Relic, including metrics strategy, distributed tracing, and proactive monitoring

Education

Bachelor’s degree in Computer Science, Engineering, or a related discipline, or equivalent professional experience