Senior Full Stack UI Engineer in Centennial, Colorado at Quantum

Key Responsibilities

Full-Stack Architecture & Development

• Design, architect, and develop modern web applications using React, TypeScript, and Vue.

• Build and maintain Backend-for-Frontend (BFF) and API services (REST and/or GraphQL) that aggregate, adapt, and optimize back-end data for UI consumption.

• Translate UI/UX requirements into efficient back-end data models, API contracts, and service boundaries.

• Define and evolve front-end and BFF architectures with a focus on performance, scalability, security, and maintainability.

Front-End & Design System Collaboration

• Collaborate with UX and product teams to translate Figma designs into high-quality, reusable UI components aligned with shared design systems and component libraries.

• Drive UI performance optimization, accessibility, and cross-browser compatibility.

• Contribute to and consume shared component libraries across React and Vue ecosystems.

Cloud Infrastructure & Reliability

• Architect and maintain back-end infrastructure in AWS (EC2, RDS, SQS, SES, ECR) and containerized environments (Docker, Kubernetes).

• Own and improve API performance through caching strategies, query optimization, and efficient data transformation.

• Respond to production incidents in a timely manner and contribute to observability, monitoring (Prometheus/Grafana), and reliability initiatives.

Back-End Security

• Integrate authentication and authorization using identity platforms such as Keycloak, including SSO and role-based access control.

• Build secure, maintainable server-side functionality and contribute to security tooling across UI and back-end layers.

Data Management

• Design, evolve, and optimize relational database schemas (PostgreSQL, MySQL) and caching layers (Redis) in support of UI-centric use cases.

• Ensure data consistency, integrity, and performance across services.

Technical Leadership

• Lead code reviews, establish best practices, and ensure consistent engineering standards across front-end and back-end layers.

• Mentor junior and mid-level engineers and contribute to raising the overall quality bar of the team.

• Participate actively in design reviews, sprint planning, and cross-team technical discussions.

Quality & Testing

• Proactively identify technical debt and lead refactoring or modernization efforts.

• Champion high code quality through thoughtful design, automated unit/integration/e2e testing, and CI/CD pipeline discipline.

Qualifications

Required

• Experience: 8+ years of professional experience building full-stack, user-facing web applications, including ownership of production services.

• Front-End: Strong hands-on experience with React in production environments; advanced proficiency in JavaScript, TypeScript, HTML5, and CSS3.

• Back-End & APIs: Experience designing and implementing UI-focused back-end services (Node.js, Python, PHP, or similar) using REST and/or GraphQL.

• Databases: Strong experience with relational (PostgreSQL, MySQL) and time series databases (Prometheus).

• Cloud & DevOps: Experience working in cloud environments with containerization and orchestration.

• UX Collaboration: Experience working closely with UX teams and implementing designs from Figma or similar design tools.

• Accessibility: Strong understanding of responsive design, accessibility standards, and browser compatibility.

• Tooling & Testing: Solid experience with Git, GitLab CI/CD, and modern automated testing frameworks.

• Debugging: Strong debugging and troubleshooting skills across front-end, API, and data layers.

• Ability to work effectively in a collaborative, in-office engineering environment.

Preferred

• Experience with the Laravel framework in PHP.

• Familiarity with identity/auth platforms and API security patterns.

• Background in storage, infrastructure, or data-intensive/enterprise-scale systems.

Education

• Bachelor’s degree in Computer Science, Computer Engineering, or a related field (or equivalent practical experience).

Soft Skills

• Strong technical leadership and problem‑solving skills. 

• Clear and effective communication with both technical and non‑technical stakeholders. 

• High attention to detail and a strong commitment to code quality. 

• Ability to influence technical direction and inspire best practices across the team. 

• Comfortable balancing hands‑on development with mentorship and technical leadership. 

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