Staff Software Engineer, Front End

Horizon3

1d•$199,750 - $260,000•Remote

About The Position

Horizon3 is seeking a Staff Software Engineer to join their Core Front-End team. This role is responsible for driving the long-term scalability, consistency, performance, and usability of the NodeZero platform. The engineer will work across multiple product areas and collaborate with Product, Design, Front-End, Back-End, Platform, and Security Engineering teams to define and implement modern user experiences at scale. As a Staff Engineer, the individual will lead complex technical initiatives, define architectural direction, establish engineering standards, improve developer workflows, and guide the evolution of the front-end platform and design system. The role also involves mentoring engineers, influencing technical strategy, and accelerating engineering effectiveness. This position is ideal for engineers who enjoy solving ambiguous problems, influencing technical direction beyond their immediate team, and building systems that enable other engineers to move faster.

Requirements

8+ years of experience building modern web applications used in production at scale
Deep expertise in JavaScript/TypeScript and React
Strong understanding of modern front-end architecture and application design
Experience leading large technical initiatives across multiple teams
Experience designing reusable component systems and scalable UI patterns
Strong knowledge of application state management, asynchronous data flows, and API integration patterns
Experience improving front-end performance, reliability, and maintainability
Strong debugging and problem-solving skills across both front-end and full-stack systems
Excellent written and verbal communication skills
Experience mentoring engineers and influencing technical direction
Ability to thrive in fast-moving, highly collaborative environments with evolving priorities

Nice To Haves

Experience building platforms, frameworks, or shared engineering infrastructure
Experience with GraphQL and modern API-driven architectures
Experience working in a monorepo environment
Experience with modern build systems and tooling
Familiarity with cloud-native environments and AWS
Experience with observability and monitoring tools such as Datadog
Experience working closely with Product Design and Design Systems
Startup experience, particularly in high-growth environments
Cybersecurity or offensive security domain experience
Experience leveraging AI-assisted development workflows and engineering tooling

Responsibilities

Drive front-end architecture decisions across the platform
Design scalable, maintainable, and reusable UI systems and application patterns
Lead large cross-functional initiatives involving multiple engineering teams
Identify and reduce technical debt across shared front-end infrastructure
Define and evolve front-end best practices, standards, and engineering guidelines
Improve application reliability, observability, accessibility, and performance
Partner with Design to improve consistency and usability across the product
Help shape the long-term technical vision for the front-end platform
Improve shared tooling, component systems, and developer workflows
Drive improvements in CI/CD pipelines, testing strategy, local development experience, and review environments
Build reusable frameworks and abstractions that accelerate feature development across teams
Collaborate on front-end performance optimization and platform-wide UX improvements
Help standardize approaches across teams while balancing flexibility and autonomy
Contribute hands-on production code in React and TypeScript
Review code and provide high-quality technical feedback
Collaborate closely with Product Managers, Designers, and Engineers throughout the development lifecycle
Participate in technical planning, roadmap discussions, and architecture reviews
Help unblock teams and provide technical guidance for complex implementation challenges
Mentor engineers across multiple teams
Raise the engineering bar through technical leadership and collaboration
Influence engineering culture, review quality, and development practices
Act as a trusted technical partner for both engineering and product leadership
Help grow future technical leaders and architects within the organization