Node Js Contract Jobs in Arizona (NOW HIRING)

We're looking for a Senior UI Engineer to design, build, and scale secure, responsive, and high availability web applications for our Banking and Financial Services clients across the US and LATAM. You'll lead feature delivery end to end-front-end (React JS) and back-end (Node.js with Express/NestJS)-with a strong emphasis on performance, security, compliance, and reliability.
What You'll Do
• Architecture & Delivery
o Design and implement scalable microservices and component-driven UIs using React 18+ and Node.js.
o Build resilient REST/GraphQL APIs; ensure schema/versioning discipline and backward compatibility.
o Drive cloud-native solutions (AWS/Azure/GCP) with IaC (Terraform/CloudFormation/Bicep).
o Ensure observability (logs, metrics, traces with OpenTelemetry), SLIs/SLOs, and error budgets.
• Security & Compliance
o Apply OWASP Top 10 controls, secure coding, and token-based auth (OAuth2/OIDC/JWT).
o Implement data protection controls, encryption (in transit/at rest), and secrets management.
o Partner with Risk/Compliance on PCI DSS, SOC 2, GDPR/CCPA, and SOX alignment.
• Quality & Performance
o Maintain high test coverage (Jest, React Testing Library, Cypress, Supertest).
o Optimize Core Web Vitals, server-side caching, and database/query performance.
• Collaboration & Leadership
o Mentor engineers, conduct code/design reviews, and uplift coding standards.
o Collaborate with PM, Design, Compliance, and SRE to deliver outcomes on time.
o Break down roadmaps into increments; manage technical debt and production readiness."
"• 8+ years of professional software engineering; 5+ years in modern JavaScript/TypeScript.
• Expert in React (Hooks, Context, Suspense), , Node.js (Express or NestJS).
• Strong with API design, authentication/authorization, and asynchronous patterns (queues, events).
• Databases: SQL (PostgreSQL/MySQL) and NoSQL (MongoDB/DynamoDB/Redis); schema design and migrations.
• Cloud & DevOps: AWS/Azure/GCP, containers (Docker), CI/CD (GitHub Actions/Azure DevOps/Jenkins), feature flags, blue green/canary deployments.
• Testing & Quality: Unit/integration/e2e tests, contract testing (Pact), linting/formatting.
• Security-by-design mindset and experience in regulated environments (BFSI/FinTech).
• Communication: Able to translate complex tech into clear stakeholder language.
Nice to Have
• NestJS or Next.js (SSR/SSG), Webpack/Vite, Storybook/Chromatic.
• Message brokers/streaming: Kafka, RabbitMQ, SQS/SNS.
• Event-driven and CQRS/Saga patterns.
• Kubernetes (EKS/AKS/GKE), service mesh (Istio/Linkerd).
• Analytics & Monitoring: Datadog, New Relic, Prometheus, Grafana.
• Experience with payments, KYC/AML, or core banking integrations.
Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company.