Staff Software Engineer, Front End

horizon3ai; United States; Hybrid; USD 170,000 - 230,000; Full time

Benefits offered by this job

Stock options

Health, vision, and dental insurance

Flexible vacation and parental leave

Hybrid and remote work models

Job summary

horizon3ai is seeking a Staff Software Engineer to join a core front-end team building a scalable, high-performance autonomous security assessment platform. You will shape architecture, UI systems, and developer workflows while delivering hands-on React/TypeScript code.

You will lead large technical initiatives across multiple teams, mentor engineers, and collaborate with Design to improve usability and consistency.

Qualifications

• 8+ years building modern web applications used in production at scale.
• Deep expertise in JavaScript/TypeScript and React.
• Experience leading large technical initiatives across multiple teams.
• Strong knowledge of state management, asynchronous data flows, and API integration patterns.

Responsibilities

• Drive frontend architecture decisions across multiple product areas and shared infrastructure.
• Design scalable, reusable UI systems, component patterns, and application frameworks.
• Lead large cross-functional initiatives spanning multiple engineering teams.
• Identify and reduce technical debt across shared frontend infrastructure.
• Improve CI/CD pipelines, testing strategy, developer workflows, and review environments.
• Contribute hands-on production code in React and TypeScript while reviewing work from other engineers.
• Partner with Design to raise consistency and usability across the product.
• Mentor engineers, raise the technical bar, and help grow future technical leaders.

Skills

JavaScript/TypeScript

React

Technical leadership

State management

API integration patterns

UI component systems

Performance and accessibility

Communication skills

Tools

Monorepo tooling

Modern build systems

AWS

Datadog

Job description

Role overview

Join a core front-end team at a fast-growing remote cybersecurity organization as a Staff Software Engineer. This central architecture and enablement group shapes the user experience, scalability, consistency, and performance of an autonomous security assessment platform used by enterprises, government agencies, and service partners. The role leads complex cross-team technical initiatives rather than owning a single product feature.

Responsibilities

• Drive front-end architecture decisions across multiple product areas and shared infrastructure
• Design scalable, reusable UI systems, component patterns, and application frameworks
• Lead large cross-functional initiatives spanning multiple engineering teams
• Identify and reduce technical debt across shared front-end infrastructure
• Improve CI/CD pipelines, testing strategy, developer workflows, and review environments
• Contribute hands-on production code in React and TypeScript while reviewing work from other engineers
• Partner with Design to raise consistency and usability across the product
• Mentor engineers, raise the technical bar, and help grow future technical leaders

Requirements

• 8+ years building modern web applications used in production at scale
• Deep expertise in JavaScript/TypeScript and React
• Experience leading large technical initiatives across multiple teams
• Strong knowledge of state management, asynchronous data flows, and API integration patterns
• Experience designing reusable component systems and scalable UI patterns
• Background improving front-end performance, reliability, observability, and accessibility
• Excellent written and verbal communication skills
• Comfort thriving in fast-moving, highly collaborative environments with evolving priorities

Nice to have

• GraphQL and modern API-driven architecture experience
• Monorepo and modern build system experience
• Familiarity with AWS, Datadog, and cloud-native environments
• Experience working closely with Product Design and Design Systems teams
• Startup background

Benefits and work setup

• Competitive salary with equity in the form of stock options for all full-time roles
• Health, vision, and dental insurance for employees and their families
• Flexible vacation policy and generous parental leave
• Hybrid and remote work models depending on role and location, with some roles requiring regular in-office presence at a Chicago office
• Inclusive culture focused on diversity, equity, and inclusion