Senior Full-Stack Engineer: React/Next.js, End-to-End Ownership

MAPSYS Inc.; East Liberty (OH); On-site; USD 90,000 - 130,000; Full time

Job summary

MAPSYS Inc. is seeking a seasoned full-stack software engineer to own projects from design to deployment and ongoing support. You will build scalable backend services with Node.js/TypeScript, and create frontend apps with React/Next.js while collaborating with Product, Data, and Ops teams.

You will deploy on AWS, implement authentication and APIs, and drive CI/CD with GitHub Actions and Cloud Build, ensuring reliability, observability, and performance in production environments.

Qualifications

• Bachelor’s degree in Information Technology, Computer Science, or equivalent IT experience.
• 5+ years of professional full stack software engineering experience.
• Experience building scalable, production-grade web applications and backend services.
• Experience with JSON, RESTful APIs, and SOAP web services, including development and integration.
• Experience deploying and maintaining applications in AWS.
• Experience with observability, reliability, performance optimization, and production debugging.
• Ability to own projects end-to-end with minimal direction.
• Experience collaborating with cross-functional engineering teams.
• Experience with AI-assisted development tools such as Cursor, Claude Code, GitHub Copilot, or similar.
• Experience with logistics, WMS, and/or manufacturing environments is a plus.

Responsibilities

• Perform system analysis and design for new applications and enhancements to existing systems.
• Build and maintain core services supporting authentication, data privacy, AI infrastructure, and internal tooling.
• Own projects from technical design through implementation, deployment, and ongoing support.
• Develop scalable backend services using Node.js, TypeScript, and relational databases.
• Build user-facing applications using React and Next.js.
• Develop backend services using Python/FastAPI and Node/Express.
• Build and integrate authentication, authorization, and rate-limiting functionality.
• Design and enhance REST APIs, shared libraries, and platform tooling.
• Containerize applications with Docker and orchestrate using Kubernetes/GKE.
• Support CI/CD automation using GitHub Actions and Cloud Build.
• Partner with Product, Data, and Operations teams to deliver reliable and scalable systems.
• Improve system reliability, observability, performance, and production troubleshooting.
• Participate in architecture discussions, code reviews, and technical documentation.

Skills

Full stack development

Backend development

Frontend development

System ownership

Problem solving

Independent work

Education

Bachelor’s degree in IT/CS or equivalent

Tools

Node.js

TypeScript

React

Next.js

Python

FastAPI

REST APIs

SOAP

AWS

Docker

Kubernetes

GitHub Actions

Cloud Build

Job description

MAPSYS Inc. is seeking a seasoned full-stack software engineer to own projects from design to deployment and ongoing support. You will build scalable backend services with Node.js/TypeScript, and create frontend apps with React/Next.js while collaborating with Product, Data, and Ops teams.

You will deploy on AWS, implement authentication and APIs, and drive CI/CD with GitHub Actions and Cloud Build, ensuring reliability, observability, and performance in production environments.