Basic Information

Name: Lead UI Developer (Remote)

Job ID: 2299

Posting Locations: King of Prussia, PA

Job Type: full-time

Status: Regular

Category: Individual Contributor

Description and Requirements


Vertex is the trusted leader in Tax technology, delivering the best tax solutions to the businesses across the globe. We strive to be a values-driven employer of choice who attracts, retains, and inspires talented professionals to achieve their full potential.

Want to work on Vertex’s most innovative UI team? It is remote role, so enjoy the freedom to innovate while maintaining great work life balance.  In this senior UI Developer role, you will be a keystone talent on which other teams will rely. We at Vertex are open to experimenting with new technologies, practices, and patterns. This position is responsible for the development of highly- responsive, web-based user interface components, and developing innovative solutions for our customers. Grow with confidence, learn from the best and share your knowledge with a rich community of practice.


·   Architect, design, code, unit test, fully implement and deliver application features with highest quality and security to prevent unauthorized access /use.

·   Create modular, scalable, testable, tested, performant sub systems which interface via well-defined endpoints using software engineering best practices such as unit testing, design patterns, etc.

·   Take ownership of the development of new highly responsive, web-based user interface components and modules, and be passionate about building scalable solutions.

·   Work with product team to understand user interactions and iteratively build/enhance customer-facing features.

·   Drive technical decision making with engineering team and architects that affect complex systems.

·   Demonstrate a holistic and strategic mindset when developing and designing new modules and resources with a focus on the big technical picture.

·   Develop a flexible and well-structured front-end architecture, along with APIs to support it.

·   Write and review PRs with a focus on ensuring best practices and improving our products.

·   Implement, test, maintain and support software, based on technical design specifications.

·   Prepare technical design specifications based on functional requirements and analysis documents.

·   Review functional requirements and, analysis and design documents and provide feedback.

·   Assist with triage and resolution of issues from customers and internal users.

·   Work independently to plan, prioritize, and complete high complex, critical priority work assignments, as a member of a project team.

·   Promote continuous improvement by identifying process inefficiencies and quality improvements.

·   Develop a culture of high ownership, technical excellence, innovation, and collaboration.

·   Challenge and mentor junior developers by consistently promoting best practices.

·   Work under minimal supervision.

·   Investigate software development tools.


·   N/A


·   Skilled in working within a team-oriented, collaborative environment, and able to contribute to technical, design and retrospective dialogs.

·   Proven analytical and problem-solving skills.

·   Passionate about learning and applying new technologies.

·   Must possess strong interpersonal, organizational, presentation and facilitation skills.

·   Able to identify root cause of system issues and determine short- and long-term resolutions.

·   Proficient in React UI build and web development-related concepts.

·   Extensive experience in core JavaScript, JS-based framework, architectural setup, webpack, hooks, state management techniques, web security and performance optimizations.

·   Good knowledge of API integration, unit testing, HTML and CSS.

·   Understanding of source control management (Git/GitHub).

·   Good to have – understanding around accessibility standards and best practices, including the Web Content Accessibility Guidelines (WCAG) or experience with assistive technology (e.g., screen readers, screen magnifiers, voice recognition) in conducting accessibility testing.

·   Proven ability to learn new technologies.

·   Experience monitoring and improving front-end performance.

·   Experience with iterative, incremental software development processes.

·   Competent with designing and writing automated tests for continuous integration.

·   Experience in TDD and BDD approach.

·   Experience in deploying React apps using CI/CD pipelines.

·   Experience with cloud deployments and enabling technologies is preferred.

·   Ability to quickly analyze, organize, and abstract large amounts of information and to make decisions based on this analysis.

·   Awareness of business issues as they impact overall project efforts.

·   Ability to influence and negotiate when faced with opposing views or resistance.

·   Ability to apply professional concepts, experience, and company objectives to perform an in-depth analysis of situations or data to resolve complex issues in creative ways.

·   Ability to work without supervision.  Wide latitude for independent decision making.

·   Ability to listen to and understand information and communicate the same.

·   Must possess good organizational skills.

·   Must be results-oriented, customer-focused, and exhibit good interpersonal skills.


·   B.S. in Computer Science or Software Engineering, or equivalent education and experience

·   Minimum of seven years of hands-on experience in front-end, web or software development

·   Or equivalent combination of education and/or experience

Other Qualifications
The Winning Way behaviors that all Vertex employees need to meet the expectations of each other, our customers, and our partners.

Communicate with Clarity - Be clear, concise, and actionable. Be relentlessly constructive. Seek and provide meaningful feedback.

Act with Urgency - Adopt an agile mentality - frequent iterations, improved speed, resilience. 80/20 rule – better is the enemy of done. Don’t spend hours when minutes are enough.

Work with Purpose - Exhibit a “We Can” mindset. Results outweigh effort. Everyone understands how their role contributes. Set aside personal objectives for team results.

Drive to Decision - Cut the swirl with defined deadlines and decision points. Be clear on individual accountability and decision authority. Guided by a commitment to and accountability for customer outcomes.

Own the Outcome - Defined milestones, commitments and intended results. Assess your work in context, if you’re unsure, ask. Demonstrate unwavering support for decisions.


The above statements are intended to describe the general nature and level of work being performed by individuals in this position. Other functions may be assigned, and management retains the right to add or change the duties at any time.