Sr. UI Developer

Sr. UI Developer

Remote- United States

Development – Development /

Full Time /

Remote

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The Senior UI Developer plays a critical role in shaping the front-end experience of Lumin Digital’s platform. This position exists to design, develop, and maintain elegant, performant, and accessible user interfaces that elevate digital banking experiences for our credit union and bank partners. Success in this role means delivering high-quality, reusable UI components, collaborating cross-functionally with design, product, and engineering teams, and ensuring consistency and excellence across the entire product ecosystem. This role is ideal for an engineer passionate about crafting visually engaging, intuitive interfaces that make complex systems feel simple.

Essential Functions and Responsibilities:

Design, develop, and maintain responsive, reusable, and accessible UI components for Lumin’s digital banking platform.

Translate UI/UX design wireframes and prototypes into high-quality code that aligns with design intent and technical feasibility.

Collaborate closely with Product Managers, UX Designers, and back-end engineers to ensure seamless integration and an exceptional user experience.

Optimize front-end performance through efficient rendering, code splitting, and other best practices.

Participate in code reviews, design reviews, and agile ceremonies to drive continuous improvement and maintain high standards of quality.

Contribute to and help evolve Lumin’s design system, ensuring consistency, scalability, and brand cohesion across products.

Troubleshoot and resolve UI-related issues across browsers and devices, ensuring reliability and accessibility (WCAG/ADA compliance).

Stay current with front-end trends, frameworks, and emerging technologies to continuously enhance product usability and developer efficiency.

Provide mentorship and technical guidance to other front-end developers as needed.

Perform other duties as assigned.

Position Specifications

Education:

Bachelor’s degree in Computer Science, Software Engineering, preferred or a related field, or equivalent combination of education and experience. Preferred

Front-end framework certifications (e.g., Angular, React) are a plus but not required.

Experience:

5+ years of professional front-end or UI development experience, with a strong portfolio of production-level work.

Proven expertise with modern JavaScript frameworks such as Angular, React, or Vue.

Experience working with RESTful APIs and front-end build tools (Webpack, npm, etc.).

Prior experience in fintech, SaaS, or similarly regulated industries preferred.

Experience contributing to design systems or shared UI libraries a plus.

Knowledge, Skills, & Abilities:

Required:

Strong proficiency in TypeScript, JavaScript (ES6+), HTML5, and CSS3 (including preprocessors such as SASS or LESS).

Deep understanding of responsive and accessible design principles (WCAG, ADA).

Ability to translate complex design specifications into pixel-perfect, performant implementations.

Experience with cross-browser compatibility and front-end testing tools.

Strong collaboration skills with the ability to communicate effectively across design, product, and engineering teams.

Attention to detail, accountability for deliverables, and a commitment to clean, maintainable code.

Nice to Have:

Familiarity with UI performance profiling and optimization techniques.

Experience with UX principles and usability testing collaboration.

Knowledge of state management libraries (e.g., NgRx, Redux, or Vuex).

Background in CI/CD processes and modern DevOps workflows.

Passion for creating exceptional digital experiences in the fintech space.

Travel:

Minimal, generally 12 days or less per year, ~2X team get togethers a year

$135,000 - $170,000 a year

LIFE AT LUMIN DIGITAL

Lumin Digital is a trailblazer in digital banking solutions, driven by a unique approach to technology, service, and people. We empower credit unions and banks by creating cutting-edge digital experiences that continuously serve, engage, and grow their membership base. Lumin is 100% cloud-native, purpose-built to unlock the full advantages of the cloud for financial institutions and their users.

At Lumin, we thrive on curiosity and innovation. Our culture fosters trust - in our expertise and decisions, respect - for diverse perspectives and talents, and boldness - in pursuing innovative paths. These values guide us, shaping a workplace where collaboration thrives, ideas flourish, and new possibilities are discovered. Focused on continuous improvement and innovation, we encourage our team to explore, experiment, and put new ideas into action, challenging the usual way of doing things.

Lumin Digital is an equal opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, national origin, disability, protected veteran status, sexual orientation, gender identity, or any other legally protected basis, in accordance with applicable law.

For more information, visit lumindigital.com.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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