Job Title: Sr Software Engineer (Node, React)
Job Type: Permanent Full Time
Location: St Louis, Missouri, United States

Description:
Sr Software Engineer (Node, React)

Position Description
Systemone is looking for a talented and experienced Full Stack Developer who enjoys building modern, high-impact web applications end-to-end. In this role you’ll work across the stack using React, Node.js, Next.js, NestJS and Postgres to deliver scalable, performant products that directly impact users.

You''ll have a strong voice in technical decisions, collaborate closely with product and design, and help shape both architecture and engineering culture. If you like ownership, solving real-world problems, and working with a pragmatic, modern tech stack—this is a great fit.

This position requires someone who is local to St. Louis, MO and willing to work on-site three days per week.

Your future duties and responsibilities
• Design, build, and maintain full-stack applications using React, Next.js, Node.js, NestJS, and Postgres
• Develop scalable APIs and backend services
• Collaborate with product managers and designers to translate requirements into technical solutions
• Write clean, maintainable, and well-tested code
• Optimize applications for performance, scalability, and reliability
• Participate in code reviews and mentor junior engineers
• Contribute to architectural decisions and technical strategy
• Troubleshoot, debug, and improve existing systems

Required qualifications to be successful in this role
• 5+ years professional experience software engineer experience
• Must have strong experience in:
• React (modern hooks, state management)
• Node.js (API development, backend architecture)
• Next.js (SSR/SSG, routing, performance optimization)
• Postgres (data modeling, query optimization)
• Experience building and deploying production-grade web applications in a cloud environment (AWS strong preferred)
• Solid understanding of RESTful APIs and web architecture
• Familiarity with version control (Git) and CI/CD workflows
• Strong problem-solving and debugging skills
• Strong full-stack engineering mindset
• Ability to own features from concept to production
• Clear and effective communication
• Collaboration across cross-functional teams
• Attention to detail and code quality
• Problem-solving and analytical thinking

Ref: #404-IT Pittsburgh

Sr Software Engineer (React,Node)

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