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Quantum

Senior Full Stack UI Engineer

Posted Yesterday
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Hybrid
Centennial, CO, USA
Senior level
Hybrid
Centennial, CO, USA
Senior level
Designs and develops full-stack web applications using React, TypeScript, Vue, and UI-focused backend services. Builds REST or GraphQL APIs, BFF architectures, cloud infrastructure, databases, authentication, and caching solutions. Leads performance, accessibility, security, testing, CI/CD, observability, and reliability initiatives. Provides technical leadership through code reviews, architecture decisions, mentoring, refactoring, and cross-team collaboration.
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Key Responsibilities 

Full-Stack Architecture & Development 

  • Design, architect, and develop modern web applications using ReactTypeScript, 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 problemsolving skills.  
  • Clear and effective communication with both technical and nontechnical 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 handson development with mentorship and technical leadership.  
Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.

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