Freelance Remote Java Backend Developer Jobs in Virginia

Job Title: Software Engineer, Full Stack

Location: Remote

Division: Technology

Department: Engineering

About Us 

Quantum Computing Inc. (QCi) (Nasdaq: QUBT) is an innovative, integrated photonics company that provides accessible and affordable quantum machines to the world today. We are the pioneers of Entropy Quantum Computing (EQC), utilizing open quantum systems to solve NP-hard optimization problems. The Company's portfolio offers unique capabilities in high-performance computing, artificial intelligence, cybersecurity, and remote sensing.

Position Description

We are seeking a Full Stack software engineer to help build the web management interface for our quantum computing devices. You will work across the stack to design REST APIs, implement React and TypeScript interfaces, and integrate with the underlying hardware control services.You will collaborate closely with backend engineers working on the hardware control platform, as well as with UI/UX and Product teams to turn operator workflows into a clean, reliable web experience.

Responsibilities

• Build and maintain a unified React, TypeScript, and Next.js codebase that serves as the central management interface for user access, system administration, and system auditing, deployed in both cloud environments and on-premise hardware appliances.

• Design and implement RESTful APIs that expose device operations, telemetry, and configuration to the web console.

• Integrate with distributed backend microservices to surface real-time hardware telemetry, job scheduling, and system status in the UI.

• Implement client-side data visualizations for device state, telemetry streams, and system health.

• Build configuration and credential management flows, including interfaces for generating, rotating, and auditing device keys and access credentials.

• Implement network configuration interfaces that replace and extend existing CLI-based workflows, giving operators a browser-based alternative to restricted shell access.

• Implement Role-Based Access Control (RBAC) across the API and UI layers to enforce permissions and view-level security.

• Manage runtime configuration so the application connects to the correct service endpoints across cloud and on-premise deployments.

• Contribute to CI/CD pipelines for deploying the console alongside hardware releases, including containerized builds for on-premise appliances.

• Partner with backend, UI/UX, and Product teams to translate operator workflows into reliable, well-tested features.

Required Qualifications

• 3+ years of professional software engineering experience building full-stack web applications.

• Frontend experience with React and TypeScript, including building interfaces for technical or operator-facing users.

• Backend experience in Python, including building REST APIs with FastAPI, Flask, Django REST Framework, or similar.

• Experience contributing to web management consoles, from REST API endpoints through UI implementation, and key and credential management.

• Familiarity with real-time data flows (WebSockets, SSE, or streaming telemetry endpoints) on either the server or client side.

• Working knowledge of web security fundamentals (OWASP Top 10, XSS/CSRF mitigation) and experience with authenticated sessions using OAuth2/OIDC.

• Experience implementing Role-Based Access Control (RBAC) in the UI, the API, or both.

• Comfort with modern CSS layout (Grid, Flexbox) and implementing UI/UX designs.

• Familiarity with CI/CD practices for deploying web applications.

Preferred Qualifications

• Experience with systems that manage cryptographic keys, credentials, or sensitive device configuration.

• Exposure to on-premise or appliance deployment models, including runtime configuration across cloud and local environments.

• Experience with containerized deployments (Docker).

• Experience with Next.js.

• Exposure to data visualization libraries (D3.js, Three.js, or similar) for representing device state, network topology, or telemetry.

Skills

Python, React, TypeScript, Next.js, REST APIs, WebSockets, CSS3, SCSS, Responsive Design, OAuth2, OIDC, OWASP, RBAC, Docker, CI/CD