QA Engineer, Horizon3

$155-208k

+ Potential for performance bonuses and equity options

AWS

Docker

Kubernetes

TypeScript

JavaScript

Python

Terraform

Azure

RDS

DynamoDB

Playwright

Datadog

Mid and Senior level

Remote from US

More information about location

Autonomous security solutions

Be an early applicant

Autonomous security solutions

101-200 employees

B2BArtificial IntelligenceMachine LearningSaaSCyber Security

Be an early applicant

$155-208k

+ Potential for performance bonuses and equity options

AWS

Docker

Kubernetes

TypeScript

JavaScript

Python

Terraform

Azure

RDS

DynamoDB

Playwright

Datadog

Mid and Senior level

Remote from US

More information about location

101-200 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, Engineering, or related field
3–6+ years of experience in QA Engineering, SDET, or a similar backend-focused testing role
Proficient in Python or JavaScript/TypeScript
Strong experience with Playwright
Strong experience testing GQL APIs, Neo4j, Kubernetes and microservices
Solid experience with AWS services such as EC2, S3, Lambda, RDS, DynamoDB, CloudWatch, and IAM
Familiarity with Infrastructure as Code (IaC) tools like Terraform or AWS CloudFormation
Hands-on experience with CI/CD pipeline, gitlab-ci
Solid understanding of software QA methodologies, tools, and processes
Ability to analyze logs, use monitoring tools (e.g., CloudWatch, Datadog), and debug issues in a distributed environment
Excellent communication and problem-solving skills

Desirable

Experience with containerized environments using Docker and Kubernetes
Experience with cloud environments such as AWS and Azure
Familiarity with event-driven architecture and asynchronous communication patterns
Familiarity with Agile workflows and practices
AWS certifications (e.g., AWS Certified Developer or Solutions Architect) are a plus

What the job involves

We are seeking a talented and detail-oriented QA Engineer / SDET with a strong focus on backend testing and cloud technologies. You will help ensure the reliability, scalability, and quality of our services by building and maintaining automated test frameworks, designing robust backend test cases, and working closely with engineering and DevOps teams in a fast-paced, agile environment
Design, develop, and maintain automated test frameworks, test suites and test infrastructure
Perform manual testing as needed for exploratory, usability, and edge-case testing
Collaborate closely with developers, product managers, and other QA team members to define test strategies, test cases, and acceptance criteria
Write clear and concise bug reports and track issues through resolution
Contribute to and follow testing process and tracking
Integrate tests into CI/CD pipelines to ensure fast feedback and code quality
Participate in code reviews and architecture discussions related to testing
Work under loose supervision and drive tasks to completion

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 recent funding under its belt, 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 and refining its offerings. Horizon3 aims to establish itself as a pivotal player in the evolving cybersecurity landscape, growing its presence across industries and geographies.

Kirsty

Company Specialist at Welcome to the Jungle

Insights

Top investors

-8% employee growth in 12 months

Glassdoor (3.4)

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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