Horizon3 - Senior Backend Engineer, Precision Defense
Requirements
• Ability to own and manage concurrent initiatives, demonstrating effective judgment in prioritization and time management. • Driven, self-managed, capable of conceiving and implementing solutions on your own and with a team. • A strong desire to continuously improve and learn new technologies in a fast-paced Agile development environment. • Excellent analytical and problem-solving skills, effective communication, attention to detail, and high-quality work. • Strong technical documentation ability to support the development process. • Effective communication and collaboration with designers, developers, and product managers. • Ability and interest in mentoring junior and mid-level engineers to foster their growth and development. • Bachelor's Degree in Computer Science, Computer Engineering, or related field. • 7+ years of professional software engineering experience using modern object-oriented or functional languages (Python, Java, Go, Scala, C++, TypeScript, etc.). • Experience building applications on cloud computing platforms such as AWS, Azure, or GCP, using container technologies such as Docker and Kubernetes. • Expert proficiency in SQL. • What Sets You Apart: • Experience in one or more of the following areas: EDR/endpoint telemetry and control validation; detection engineering and SOC/SIEM workflows; threat detection, deception systems, honeypots, or tripwire-style platforms; vulnerability intelligence and rapid response workflows. • Familiarity with major EDR platforms (CrowdStrike, SentinelOne, Microsoft Defender) at the telemetry or API level. • Understands detection logic, alert triage workflows, and how security teams consume and act on findings. • Comfort translating attack behavior into measurable defensive outcomes. • Expert proficiency in SQL and experience with relational (PostgreSQL) and graph (Neo4j) database architectures. • Background in event-driven systems, distributed services, observability, and production reliability.
Responsibilities
• Build and maintain backend APIs, ETL pipelines, and data processing systems that power Rapid Response, Tripwires, EDR effectiveness, and Autonomous Defense workflows. • Design and implement GraphQL APIs to facilitate data interactions across product components. • Develop event-driven services and distributed systems that support reliable, scalable security automation. • Collaborate with frontend engineers, attack engineers, and product managers to deliver customer-facing features that communicate security findings clearly and actionably. • Contribute to production reliability: monitoring, alerting, incident response, and debugging across ETL, deployment, and data-propagation workflows. • Support safe, explainable, and reversible security automation — understanding that incorrect behavior in this domain can mean missed detections, noisy alerts, or false confidence for customers. • Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.
Benefits
• Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive. • Growth Opportunities: Be part of a dynamic and growing team with numerous career development opportunities. • Innovative Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking. • Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location, including our Chicago office, where some roles require regular in-office presence. • Competitive Compensation: We offer competitive salary, equity and benefits. Our benefits include health, vision & dental insurance for you and your family, a flexible vacation policy, and generous parental leave. • At Horizon3, we believe that our people are our greatest asset, and our compensation philosophy reflects this core value. We are committed to fostering an environment where all employees feel valued, respected, and rewarded for their contributions. Our compensation structure is designed to be fair, competitive, and transparent, ensuring that every team member is recognized and compensated equitably across roles, levels, and locations. • In accordance with various State’s transparency regulations, we provide the following salary range information for this position: • Base salary range: $170,00 - $235,000 annually. The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills. • Additional compensation: All full-time roles are eligible for an equity package in the form of stock options. • You Belong Here • You Belong Here
Apply in one click
Upload My Resume
Drop here or click to browse · Tap to choose · PDF, DOCX, DOC, RTF, TXT