Senior Backend Engineer

🔥 4 hours ago

🇺🇸 United States – Remote

💵 $199.8k - $235k / year

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 20%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Horizon3.ai

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2019

🔒 Cybersecurity

🤖 Artificial Intelligence

☁️ SaaS

Cybersecurity • Artificial Intelligence • SaaS

Horizon3. ai is a cybersecurity company that specializes in autonomous penetration testing through its platform, NodeZero. The company's mission is to proactively identify and address attack vectors before they can be exploited, allowing organizations to continuously assess their security posture across various environments including cloud, IoT, and on-premises systems. Founded by veterans from the US Special Operations and National Security sectors, Horizon3. ai offers a self-service SaaS solution that provides organizations with insights into their security vulnerabilities without requiring persistent or credentialed agents.

📋 Description

• Design, build, and maintain features in the core Python API • Design, build, and operate workflow orchestration for large-scale, long-running workloads • Build orchestration that scales across concurrent workflows with visibility into progress, failures, and throughput • Optimize and safely refactor complex SQL in production • Build and operate high-throughput data processing and ETL pipelines • Contribute to AWS datalake architecture, including storage layout, partitioning, schema evolution, and query performance • Deploy and manage services on Kubernetes • Participate in cluster operations, release management, and capacity planning • Develop and extend GraphQL and graph-based APIs • Own observability, uptime, and scalability, including metrics, tracing, alerting, and on-call participation • Partner with frontend engineers, product managers, and designers to deliver user-facing capabilities • Contribute to systems architecture decisions and write design documentation • Collaborate with frontend team members to present data clearly and improve user experience

🎯 Requirements

• 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 • Experience building and running workflow orchestration or distributed task-processing systems in production • Hands-on experience designing and building high-throughput data processing systems and ETL pipelines • Experience building applications on AWS, Azure, or GCP • Experience with Docker and Kubernetes • Ability to own and manage concurrent initiatives • Reliability mindset for distributed work, including retries, partial failure, and recovery • Strong analytical and problem-solving skills • Strong technical writing for design docs, runbooks, and API documentation • Ability to collaborate effectively with designers, developers, and product managers • Only US persons can interview due to customer/vendor security clearance requirements • Must be eligible for and successfully secure a US Federal Security Clearance as a condition of employment

🏖️ Benefits

• Equity package in the form of stock options for all full-time roles • Health, vision & dental insurance for you and your family • Flexible vacation policy • Generous parental leave • Career development opportunities • Inclusive and collaborative work culture • Fully remote work model • Up to 5% travel