Remote Remote (Global)

OnHires is hiring a Senior Fullstack (Node.js + React.js)

About the Role

Role Overview

This is a senior-level engineering position focused on full ownership of feature development across both frontend and backend systems. You'll work directly in a modern SaaS stack, designing and delivering high-impact functionality while contributing to architectural direction and system reliability. This role does not include people management—it’s designed for engineers who thrive in deep technical ownership and product-focused delivery.

What You’ll Do

  • Develop and ship end-to-end features using Node.js, NestJS, React.js, Next.js, and TypeScript
  • Design scalable backend services and secure, well-documented REST APIs
  • Build responsive, efficient frontend components with server-side rendering, routing, and state management
  • Write clean, testable, and well-documented code with a focus on long-term maintainability
  • Collaborate in technical discussions shaping the product’s architecture and evolution
  • Enhance observability using tools like Sentry, Datadog, and Groundcover for logging, monitoring, and alerting
  • Diagnose and resolve performance bottlenecks across services and UI layers
  • Lead incident response and conduct root-cause analysis to improve system resilience
  • Optimize CI/CD pipelines using GitHub Actions for reliable, repeatable deployments
  • Work closely with DevOps to maintain consistent environments from development to production
  • Help define and follow Git branching strategies, whether Git Flow or trunk-based development
  • Ensure deployment workflows are smooth, predictable, and production-ready

What We’re Looking For

  • 5+ years of professional experience in full-stack software development
  • Proven production-level work with Node.js and NestJS
  • Strong track record building applications with React.js and Next.js
  • Extensive use of TypeScript across frontend and backend
  • Firm grasp of PostgreSQL, including data modeling, indexing, and query optimization
  • Hands-on experience with AWS services such as Lambda, S3, CloudWatch, SNS, and SQS
  • Experience designing secure REST APIs with JWT and industry-standard authentication practices
  • Understanding of distributed systems and scalable backend architectures
  • Direct experience with CI/CD pipelines and automation via GitHub Actions
  • Familiarity with Docker and containerized environments
  • Experience managing version control workflows and Git branching models

Nice-to-Have Skills

  • Kubernetes (K8s) for container orchestration
  • Experience with ArgoCD or GitOps deployment patterns
  • Background in event-driven systems using Kafka, RabbitMQ, or similar
  • Infrastructure as Code using Terraform
  • Working knowledge of observability platforms like Sentry, Datadog, or Groundcover
  • Experience with design systems or Storybook
  • Contributions to internal libraries or shared packages
  • Test automation using Playwright or comparable frameworks

Technology Stack

Node.js, NestJS, React.js, Next.js, TypeScript, PostgreSQL, AWS (Lambda, S3, CloudWatch, SNS/SQS), REST APIs, JWT, GitHub Actions, Docker, Git, Sentry, Datadog, Groundcover, Kubernetes, ArgoCD, Kafka, RabbitMQ, Terraform, Storybook, Playwright

Benefits

  • Competitive compensation package
  • 22 paid vacation days plus national holidays
  • Annual budget for learning and development—including courses, certifications, and conferences
  • Opportunity to shape a growing multi-product SaaS platform
  • Modern tech stack with minimal legacy constraints
  • Autonomous engineering culture centered on product impact and technical excellence

Work Environment

This is a fully remote, full-time position available globally under a B2B contract. The team operates in a senior-led, independent engineering environment—no external clients, no outsourcing, and no investor-driven timelines. You’ll have the freedom to focus on building high-quality systems that scale.

Required Skills
Node.jsNestJSReact.jsNext.jsTypeScriptPostgreSQLAWS (Lambda, S3, CloudWatch, SNS/SQS)REST APIsJWTGitHub Actions Node.jsNestJSReact.jsNext.jsTypeScriptPostgreSQLAWS LambdaAWS S3AWS CloudWatchAWS SNSFullstack DevelopmentRESTful APIsMicroservicesTypeScriptCloud Architecture
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About company
OnHires
A fast-growing global leader in next-generation payment solutions, powering some of the most dynamic sectors of the digital economy — including iGaming, Forex, Crypto, and eCommerce. The company operates a proprietary payment infrastructure supporting 60+ global and local payment methods, enabling seamless cross-border operations with AI-driven routing, PCI DSS-certified security, and real-time fraud monitoring.
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Job Details
Category fullstack
Posted a month ago