Senior Full Stack UI Engineer

LT ZERO Asia Pacific•Centennial, CO

1d•Onsite

About The Position

We are seeking a Senior Full Stack UI Engineer to join our team. This role involves designing, architecting, and developing modern web applications using React, TypeScript, and Vue. You will build and maintain Backend-for-Frontend (BFF) and API services, translate UI/UX requirements into efficient back-end data models, and define front-end and BFF architectures with a focus on performance, scalability, security, and maintainability. You will also collaborate with UX and product teams to translate Figma designs into high-quality, reusable UI components, drive UI performance optimization, and contribute to shared component libraries. Additionally, you will architect and maintain back-end infrastructure in AWS and containerized environments, own and improve API performance, and respond to production incidents. Security integration, data management, and technical leadership, including mentoring junior engineers and establishing best practices, are also key aspects of this role. You will champion high code quality through thoughtful design, automated testing, and CI/CD pipeline discipline.

Requirements

8+ years of professional experience building full-stack, user-facing web applications, including ownership of production services.
Strong hands-on experience with React in production environments; advanced proficiency in JavaScript, TypeScript, HTML5, and CSS3.
Experience designing and implementing UI-focused back-end services (Node.js, Python, PHP, or similar) using REST and/or GraphQL.
Strong experience with relational (PostgreSQL, MySQL) and time series databases (Prometheus).
Experience working in cloud environments with containerization and orchestration.
Experience working closely with UX teams and implementing designs from Figma or similar design tools.
Strong understanding of responsive design, accessibility standards, and browser compatibility.
Solid experience with Git, GitLab CI/CD, and modern automated testing frameworks.
Strong debugging and troubleshooting skills across front-end, API, and data layers.
Ability to work effectively in a collaborative, in-office engineering environment.
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.

Nice To Haves

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.

Responsibilities

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.
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.
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.
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.
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.
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.
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.