Senior Frontend Software Engineer, Horizon3

Salary not provided

React

AWS

CSS

TypeScript

HTML

JavaScript

GraphQL

Node.js

Git

Senior and Expert level

Denver

San Francisco Bay Area

More information about location

Autonomous security solutions

Job no longer available

Autonomous security solutions

201-500 employees

B2BArtificial IntelligenceMachine LearningSaaSCyber Security

Job no longer available

Salary not provided

React

AWS

CSS

TypeScript

HTML

JavaScript

GraphQL

Node.js

Git

Senior and Expert level

Denver

San Francisco Bay Area

More information about location

201-500 employees

B2BArtificial IntelligenceMachine LearningSaaSCyber Security

Company mission

To help find and fix attack vectors before attackers can exploit them.

Job

Company

Role

Who you are

Bachelor's degree in computer science, computer engineering, software engineering, or a related field
8+ years of experience working on production applications with real-world users
Experience working with SaaS applications and in startup environments
Proficiency in JavaScript, React, TypeScript, HTML/CSS, Git & GitLab

Desirable

Experience with GraphQL for efficient data retrieval and interaction
Proficiency in Node.js for backend development
Knowledge of WebSockets for real-time communication
Familiarity with Webpack for bundling and optimizing front-end assets
Experience with Monorepo for managing multi-package projects
Knowledge of AWS (Amazon Web Services) to leverage their product suite
Understanding of defensive and offensive cybersecurity concepts

What the job involves

Horizon3AI is seeking a Senior Software Engineer to join our exceptional team of modern JavaScript engineers. As a Senior Software Engineer, you will work closely with our Engineering team to execute on our technical roadmap and contribute to the development of our product, NodeZero
Build new features for our product, NodeZero, using React and TypeScript
Gain in-depth understanding of the product, analyze logs, and troubleshoot errors to ensure smooth operation
Review code and write tests to maintain high code quality and reliability
Manage infrastructure and define best practices for the front-end development process
Mentor and support the growth of junior engineers within the team

Our take

In an era marked by escalating cyber threats and data breaches, safeguarding digital assets has become a high priority across all industries. Amid this landscape, Horizon3.ai stands out as an autonomous security solution by addressing the critical need for robust cybersecurity.

At the heart of Horizon3.ai's mission is NodeZero™, a platform designed to elevate proactive security measures. Using this, customers can verify their security posture and identify potential vulnerabilities through self-service. This proactive approach to cybersecurity effectively thwarts potential exploits and ensures the integrity of their digital infrastructure.

With 2025 funding in hand, the company is poised to further its ambition to develop into an industry-leading cybersecurity company. The infusion of funds will be channelled towards expanding its partner network, refining its offerings and entering the US government market. Horizon3 aims to establish itself as a pivotal player in the evolving autonomous security landscape, a highly lucrative market valued at $80 billion.

Kirsty

Company Specialist at Welcome to the Jungle

Insights

Top investors

-8% employee growth in 12 months

Glassdoor (4.9)

Company

Funding (last 2 of 6 rounds)

Jun 2025

$100m

SERIES D

Aug 2023

$40m

SERIES C

Total funding: $187m

Company benefits

Growth Opportunities: Be part of a dynamic and growing team with numerous career advancement opportunities
Innovation-Driven Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking
Flexible Work Environment: Enjoy the convenience and work-life balance that comes with remote work
Inclusive and Diverse Team: We value diversity and promote an inclusive culture where everyone can thrive

Company HQ

SoMa, San Francisco, CA

Leadership

Snehal Antani

(Co-Founder & CEO)

Graduated from the Rensselaer Polytechnic Institute with an MS in Computer Science. Previously worked at IBM as a Lead Architect, at GE Capital as the CIO of Distribution Finance and Splunk as the SVP & GM of Business Analytics & IoT.

Anthony Pillitiere

(Co-Founder)

Graduated from the University of Maryland with a Bachelor's Degree in Computer Systems Networking and Telecommunications. Previously worked at the United States Air Force in multiple roles, including Deputy Chief Technology Officer.

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