Senior UI Engineer

📍 Job Overview

Job Title: Senior UI Engineer

Company: Corelight

Location: North America (Remote OK)

Job Type: Full-Time

Category: Frontend Engineering / Cybersecurity Technology

Date Posted: 2026-05-07

Experience Level: 5-10 years

Remote Status: Hybrid (Remote OK, specific office locations may exist)

🚀 Role Summary

• Lead the architecture, development, and end-to-end ownership of modern, scalable frontend systems for Corelight's Fleet Manager product.

• Bridge sophisticated, data-heavy APIs (GraphQL, REST) with intuitive user interfaces to empower customers in managing large fleets of security sensors and acting on complex security data.

• Drive the Investigator product forward by translating wireframes and UX designs into high-quality, accessible, and performant UI components within an Agile development framework.

• Uphold and elevate code quality through rigorous testing, detailed documentation, and thorough code reviews, ensuring long-term maintainability and technical excellence.

• Collaborate closely with UX Design, Product, and Engineering teams to solve complex problems and deliver exceptional user experiences in the cybersecurity domain.

📝 Enhancement Note: This role is positioned as a Senior UI Engineer, implying a need for strong architectural skills, leadership in frontend development, and the ability to mentor junior engineers. The focus on "data-heavy visual interfaces capable of handling massive network datasets" and integration with cybersecurity tools like Zeek, Suricata, and YARA indicates a specialized application of UI engineering within a technically demanding industry.

📈 Primary Responsibilities

• Architect, design, and develop modern, scalable, and performant web applications using React, TypeScript, and related frontend technologies to advance the Investigator product.

• Translate wireframes, UX designs, and complex user flows into high-quality, accessible, and reusable UI components that adhere to design system standards.

• Integrate and consume data from GraphQL and REST APIs, ensuring efficient handling and visualization of massive network security datasets for interactive user interfaces.

• Champion and maintain high code quality standards through comprehensive unit, integration, and end-to-end testing, alongside detailed documentation and rigorous code review processes.

• Actively participate in and drive agile development workflows, including sprint planning, retrospectives, daily stand-ups, and backlog grooming, with a high degree of independence and a focus on iterative delivery.

• Collaborate closely with UX designers to refine user experience, ensuring that complex security data is presented in an intuitive and actionable manner for cybersecurity professionals.

• Partner with backend engineering teams to understand and leverage relational database structures, facilitating seamless data flow and API integration.

• Take ownership of features from conception through to production, ensuring successful deployment and ongoing maintenance, and identifying opportunities for continuous improvement.

📝 Enhancement Note: The responsibilities highlight a blend of hands-on development, architectural design, and cross-functional collaboration, emphasizing ownership and the ability to navigate complex technical challenges within a cybersecurity context. The mention of "Fleet Manager product" and "Investigator product" suggests specific product lines within Corelight that the UI Engineer will contribute to.

🎓 Skills & Qualifications

Education: Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical professional experience.

Experience: 3 to 7 years of professional software development experience, with a demonstrated track record in Senior level roles focused on frontend development.

Required Skills:

• Advanced proficiency in JavaScript/TypeScript and modern frontend frameworks, specifically React.

• Expertise in building and consuming GraphQL and REST APIs to power rich, data-heavy visual user interfaces.

• Deep understanding of UI architecture principles and best practices for scalable web applications.

• Proven experience working directly with UX Design Teams to translate designs into functional, user-friendly interfaces and refine complex user flows.

• Strong grasp of Relational Databases and how to effectively partner with backend teams regarding data structures and access.

• Fluency in Agile development methodologies, including participation in sprint planning, retrospectives, and daily standups within high-performing engineering teams.

• Excellent verbal and written communication skills, with the ability to articulate technical concepts and influence technical outcomes across diverse teams.

• Commitment to writing clear, well-structured, and maintainable code, valuing long-term quality.

• Ability to think systemically, understanding how state, data, and UI architecture interact across a large application.

Preferred Skills:

• Experience with design library components and their implementation.

• Knowledge of web accessibility standards (WCAG) and best practices.

• Familiarity with cybersecurity concepts, network detection and response (NDR) principles, and tools like Zeek, Suricata, or YARA.

• Experience with frontend testing frameworks (e.g., Jest, React Testing Library, Cypress).

• Understanding of CI/CD pipelines and deployment strategies for frontend applications.

📝 Enhancement Note: The requirements emphasize a strong foundation in modern frontend technologies and API integration, coupled with soft skills like systems thinking, product empathy, and communication. The inclusion of "Relational databases" suggests a need for understanding backend data models, and "UX Design Teams" points to a collaborative approach to product development. The explicit mention of "Senior level roles" and "3 to 7 years" provides a clear experience benchmark.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase of at least one complex, data-intensive web application project demonstrating mastery of React, TypeScript, and API integration (GraphQL/REST).

• Examples of UI components that handle large datasets or complex visualizations, highlighting performance optimization strategies.

• Documented contributions to frontend architecture or significant refactoring efforts that improved scalability, maintainability, or performance.

Process Documentation:

• Clear articulation of the development lifecycle followed for portfolio projects, from requirement gathering and design to implementation, testing, and deployment.

• Examples of how testing strategies (unit, integration, end-to-end) were applied to ensure code quality and reliability for complex UI features.

• Demonstrations of how code quality, maintainability, and technical debt were managed throughout the development process, including code review practices.

• Evidence of participation in Agile ceremonies and how these processes were leveraged for efficient development and delivery.

📝 Enhancement Note: Given the senior nature of the role and the emphasis on "ownership" and "end-to-end user experience," a strong portfolio demonstrating practical application of advanced frontend skills in complex environments is crucial. The ability to articulate process, demonstrate problem-solving, and showcase collaboration with design and product teams will be key evaluation criteria.

💵 Compensation & Benefits

Salary Range: $214,000 - $277,000 USD per year.

Benefits:

• Equity in a fast-growing cybersecurity company.

• Potential for commission-based or discretionary bonuses, depending on role seniority and nature.

• Comprehensive health, dental, and vision insurance.

• Paid time off (PTO) and holidays.

• Opportunities for professional development, training, and conference attendance.

• Retirement savings plan (e.g., 401k) with potential company match.

• Flexible work arrangements and support for remote work.

Working Hours: Standard full-time hours (approximately 40 hours per week), with flexibility expected for agile development sprints and project deadlines. Remote work options provide additional flexibility in scheduling.

📝 Enhancement Note: The salary range provided is at the higher end, reflecting a senior engineering role in a high-demand industry (cybersecurity) and location (North America). The inclusion of equity, bonuses, and a comprehensive benefits package aligns with standard offerings for senior technical positions. The "Notice of Pay Transparency" indicates that compensation can vary based on location, skills, and experience, and that bonuses may be performance-driven.

🎯 Team & Company Context

🏢 Company Culture

Industry: Cybersecurity, Network Detection and Response (NDR), Network Security. Corelight operates at the intersection of network visibility and threat detection, leveraging open-source innovations to provide actionable security insights.

Company Size: Growing, fueled by significant venture capital investments. This indicates a dynamic environment with potential for rapid scaling and innovation.

Founded: Corelight was built on open-source innovations from Zeek, Suricata, and YARA, suggesting a foundation rooted in community-driven technology and refined through years of real-world application.

Team Structure:

• The UI Engineering team likely operates within a product-focused structure, collaborating closely with dedicated Product Managers and UX Designers for specific product lines like Fleet Manager and Investigator.

• Reporting structure is likely to involve a Frontend Engineering Manager or Director, with senior engineers expected to provide technical leadership and guidance.

Methodology:

• Emphasis on Agile development methodologies, promoting iterative delivery, continuous feedback, and adaptability.

• Data-driven decision-making, leveraging insights from network data and user behavior to inform product development and UI design.

• Focus on engineering craft and long-term quality, encouraging well-structured, maintainable code and rigorous testing practices.

• Ownership and accountability are key, with engineers expected to take responsibility for features from inception to deployment and beyond.

Company Website: www.corelight.com

📝 Enhancement Note: Corelight's culture is shaped by its cybersecurity mission, its foundation in open-source technology, and its growth trajectory. The company values engineering excellence, user empathy, and collaborative problem-solving. The emphasis on "high-agency" and "ownership" suggests an environment where proactive individuals can make a significant impact.

📈 Career & Growth Analysis

Operations Career Level: This role is classified as a Senior UI Engineer, indicating a mid-to-senior level position within the engineering hierarchy. It requires not only strong technical execution but also the ability to influence architectural decisions, mentor junior engineers, and take ownership of significant product areas.

Reporting Structure: The Senior UI Engineer will likely report to a Frontend Engineering Manager or Director. They will collaborate closely with Product Managers, UX Designers, and other engineers (frontend, backend, QA) within their product team.

Operations Impact: The UI Engineer plays a critical role in translating complex cybersecurity data and network insights into actionable, intuitive interfaces for Corelight's customers. Their work directly impacts the usability, efficiency, and effectiveness of Corelight's Fleet Manager and Investigator products, enabling security teams to better detect, respond to, and hunt for cyber threats.

Growth Opportunities:

• Technical Specialization: Deepen expertise in advanced frontend architecture, performance optimization for data-intensive applications, and emerging frontend technologies.

• Leadership Development: Transition into Tech Lead roles, guiding project teams, mentoring junior engineers, and contributing more significantly to technical strategy and roadmap planning.

• Cross-Functional Expertise: Gain deeper understanding of cybersecurity principles, network protocols, backend systems, and product management, enabling a more holistic approach to product development.

• Architectural Influence: Contribute to the evolution of Corelight's frontend technology stack and architectural patterns, shaping the future of its user interfaces.

📝 Enhancement Note: The "Senior" title, coupled with the emphasis on ownership and systems thinking, suggests a clear path for growth into more senior technical leadership roles or specialized architectural positions within Corelight's engineering organization. The cybersecurity domain offers unique challenges and learning opportunities that can accelerate career development.

🌐 Work Environment

Office Type: Corelight supports a geographically distributed yet connected employee base, with options for working from home and dedicated office locations around the world. This indicates a hybrid or remote-first approach.

Office Location(s): While the role is listed as North America and remote-OK, specific office locations may exist for those who prefer an in-office or hybrid setup. Candidates should inquire for details on available physical workspaces.

Workspace Context:

• The work environment fosters collaboration through various digital tools and potential in-person meetups or team events, enabling engineers to connect and solve problems together.

• Access to modern development tools and technologies is expected, supporting efficient frontend development and integration with Corelight's backend systems.

• Opportunities for regular interaction with engineering, product, and design teams are integral to the workflow, promoting a cohesive and productive development process.

Work Schedule: The standard working hours are approximately 40 hours per week, typical for a full-time role. However, the company culture emphasizes flexibility, particularly with remote work options, allowing engineers to manage their schedules effectively while meeting project deadlines and participating in Agile ceremonies.

📝 Enhancement Note: The hybrid/remote-first model offers significant flexibility. The emphasis on collaboration within a distributed team suggests a reliance on strong communication tools and practices to maintain team cohesion and project momentum.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A brief call with a recruiter to assess overall fit, experience alignment, and basic qualifications.

• Technical Interview (Round 1): Focus on core frontend skills, JavaScript/TypeScript fundamentals, React concepts, and API integration principles. May include live coding exercises or conceptual problem-solving.

• Technical Interview (Round 2): Deeper dive into systems thinking, architectural design, handling complex data, and problem-solving for data-intensive UIs. This might involve discussing past projects or hypothetical scenarios.

• Portfolio Review & Discussion: A dedicated session where candidates present selected projects from their portfolio, detailing their role, technical challenges, solutions, and impact. This is a crucial step for senior roles.

• Hiring Manager/Team Lead Interview: Discussion around team dynamics, collaboration style, ownership, product empathy, and leadership potential.

• Final Round/Executive Interview: May involve a broader discussion on company values, strategic thinking, and overall fit within Corelight's mission.

Portfolio Review Tips:

• Curate Strategically: Select 2-3 projects that best showcase your Senior UI Engineer capabilities, particularly those involving complex data visualization, large-scale applications, or significant architectural contributions.

• Structure Your Narrative: For each project, clearly articulate the problem statement, your specific role and contributions, the technical challenges faced (e.g., performance, API integration, UX complexity), the solutions implemented (highlighting React, TypeScript, GraphQL/REST), and the measurable outcomes or impact.

• Focus on Process & Collaboration: Detail how you collaborated with UX designers and backend engineers, how you approached testing, and how you navigated Agile workflows. Emphasize your ownership and systems thinking.

• Be Ready for Deep Dives: Prepare to answer in-depth questions about your code, architectural decisions, trade-offs made, and lessons learned. Demonstrate your ability to think critically about scalability, maintainability, and user experience.

Challenge Preparation:

• System Design: Practice designing scalable frontend architectures for data-intensive applications. Consider state management, data fetching strategies, and performance optimizations.

• Problem Solving: Be prepared for scenario-based questions related to debugging complex UI issues, optimizing performance for large datasets, or implementing intricate user flows.

• Coding Proficiency: Refresh your knowledge of JavaScript/TypeScript and React. Be comfortable with common algorithms and data structures, and practice writing clean, efficient code under pressure.

📝 Enhancement Note: For a Senior UI Engineer role, the interview process will heavily weigh the candidate's ability to demonstrate not just technical execution but also architectural thinking, ownership, and effective collaboration. The portfolio review is a critical component, so candidates should prepare thoroughly to articulate their contributions and impact.

🛠 Tools & Technology Stack

Primary Tools:

• Frontend Framework: React (Advanced proficiency required).

• Language: TypeScript, JavaScript (Advanced proficiency required).

• API Integration: GraphQL, REST APIs (Extensive experience required).

• State Management: Libraries like Redux, Zustand, or Context API (Familiarity expected).

• Build Tools: Webpack, Vite, or similar (Understanding of configuration and optimization).

• Version Control: Git (Standard proficiency).

Analytics & Reporting:

• Performance Monitoring: Tools for tracking frontend performance, identifying bottlenecks (e.g., browser developer tools, specialized APM tools).

• User Behavior Analytics: Potentially tools like Amplitude, Mixpanel, or internal logging for understanding user interaction with the UI.

• Dashboarding: Familiarity with creating or consuming data from dashboards for monitoring application health and feature usage.

CRM & Automation:

• While not directly a CRM role, understanding how frontend applications integrate with backend systems that might interface with CRMs or other business applications is beneficial.

• Testing Frameworks: Jest, React Testing Library, Cypress, or similar for comprehensive test coverage.

📝 Enhancement Note: The core technology stack is clearly defined as React and TypeScript, with a strong emphasis on GraphQL and REST API integration. Proficiency in these areas is paramount. Familiarity with testing frameworks and build tools is also expected for a senior role focused on quality and maintainability.

👥 Team Culture & Values

Operations Values:

• Engineering Craft: A deep commitment to writing high-quality, well-structured, and maintainable code, prioritizing long-term technical health over expediency.

• Systems Thinking: The ability to understand and design for the interconnectedness of components, data flows, and architectural layers within a complex application.

• Product & User Empathy: A genuine care for building interfaces that help users understand complex data quickly and making thoughtful trade-offs to enhance usability.

• Ownership & Accountability: Taking full responsibility for outcomes, driving work from design through to production, and continuously seeking to improve shipped products.

• Collaboration & Communication: Fostering an environment where feedback is welcomed, communication is clear across teams (engineering, design, product), and problems are solved collectively.

Collaboration Style:

• Cross-functional Integration: Seamless collaboration with UX Design and Product Management to ensure user needs are met and designs are effectively implemented.

• Peer Review Culture: Encouraging constructive code reviews and knowledge sharing to elevate team capabilities and code quality.

• Agile Teamwork: Active participation in Agile ceremonies, contributing to team planning, problem-solving, and continuous improvement cycles.

• Open Communication: Valuing transparent communication about progress, challenges, and potential solutions, fostering a supportive and efficient work environment.

📝 Enhancement Note: Corelight's values emphasize a blend of technical excellence, user focus, and collaborative spirit. For a Senior UI Engineer, demonstrating these values through their work, communication, and approach to problem-solving will be crucial for cultural fit.

⚡ Challenges & Growth Opportunities

Challenges:

• Data-Intensive UI Complexity: Effectively designing and implementing user interfaces that can visualize and interact with massive, complex network security datasets without compromising performance or usability.

• Bridging API Gaps: Translating sophisticated, potentially low-level, data-heavy APIs into intuitive and actionable user experiences for security analysts.

• Maintaining High Standards: Upholding rigorous code quality, testing, and documentation standards across a growing codebase and evolving product features.

• Balancing Innovation and Stability: Integrating new features and technologies while ensuring the stability and reliability of critical security management tools.

Learning & Development Opportunities:

• Advanced Frontend Architecture: Opportunities to explore and implement cutting-edge frontend architectural patterns for large-scale, data-driven applications.

• Cybersecurity Domain Expertise: Deepen understanding of network security, threat detection, and incident response, enabling more informed UI/UX decisions.

• Leadership and Mentorship: Develop leadership skills through mentoring junior engineers, leading feature development, and contributing to technical strategy.

• Cross-Disciplinary Learning: Gain insights into backend systems, database structures, and product management principles to foster a more holistic product development perspective.

📝 Enhancement Note: The role presents challenges inherent to building complex applications in a specialized, high-stakes industry like cybersecurity. However, these challenges are also framed as significant growth opportunities, allowing for deep technical skill development and career advancement.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you had to design a UI component for handling very large or complex datasets. What were the key challenges, and how did you approach them?" (Focus on performance optimization, data visualization strategies, and your systems thinking).

• "How do you approach translating complex, data-rich APIs into intuitive and user-friendly interfaces? Walk us through your process." (Emphasize API integration, user empathy, and iterative design).

Company & Culture Questions:

• "What interests you about Corelight and our mission to make the world safe from cyber attacks?" (Research Corelight's products, mission, and recent news).

• "How do you contribute to a collaborative engineering culture, especially in a remote or hybrid environment?" (Highlight your communication skills, experience with Agile, and desire for teamwork).

Portfolio Presentation Strategy:

• Storytelling: Frame your portfolio projects as narratives. Start with the user problem or business need, explain your role and the technical hurdles, detail your solution with specific examples of code and architecture, and conclude with the impact or results.

• Highlight Key Technologies: Explicitly mention your use of React, TypeScript, GraphQL/REST, and any other relevant tools or patterns.

• Demonstrate Ownership: Clearly articulate what aspects of the project you owned, from design implementation to deployment and ongoing maintenance.

• Showcase Collaboration: Describe how you worked with designers, product managers, and backend engineers, and how you incorporated feedback.

• Quantify Impact: Wherever possible, use metrics to demonstrate the success of your work (e.g., performance improvements, user adoption, reduction in errors).

📝 Enhancement Note: Interview preparation should focus on demonstrating not just technical proficiency but also the strategic thinking, ownership, and collaborative skills expected of a Senior UI Engineer. The portfolio presentation is a prime opportunity to showcase these attributes.

📌 Application Steps

To apply for this Senior UI Engineer position:

• Submit your application through the Corelight careers portal via the provided link.

• Tailor Your Resume: Highlight your experience with React, TypeScript, GraphQL/REST APIs, and complex data visualization. Quantify achievements and clearly state your years of experience in senior-level roles.

• Prepare Your Portfolio: Select 2-3 impactful projects that showcase your frontend architecture, complex data handling, and collaborative skills. Be ready to present them with clear narratives on problem, solution, and impact.

• Research Corelight: Understand their mission, products (Fleet Manager, Investigator), and technology stack. Familiarize yourself with their values and culture.

• Practice Interview Questions: Prepare thoughtful answers to technical, behavioral, and situational questions, focusing on demonstrating ownership, systems thinking, and user empathy.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.