Senior Backend Engineer, Precision Defense
Horizon3 · Remote · US, Remote ·
COMPENSATION
€•• – ••k
Listed on the employer's job board (Ashby)
- Senior Backend Engineer
- Fully remote or hybrid
- Python, Go, Java, or similar
- AWS, Azure, or GCP
- GraphQL & SQL expertise
Join the Precision Defense team at Horizon3 to build backend systems that help organizations move from reactive security to proactive, evidence-based defense. You will work on infrastructure supporting Rapid Response, deception signals, and security control validation, translating attacker findings into measurable defensive outcomes.
The team operates in a fast-paced Agile environment, collaborating with frontend engineers, attack engineers, and product managers. You will contribute to customer-facing features that clarify security findings and support production reliability through monitoring and incident response.
What you'll do
- Build and maintain backend APIs, ETL pipelines, and data processing systems
- Design and implement GraphQL APIs for cross-component data interactions
- Develop event-driven services and distributed systems for security automation
- Collaborate with cross-functional teams to deliver actionable security features
- Ensure production reliability through monitoring, alerting, and incident response
- Support safe, explainable, and reversible security automation workflows
What you'll need
- Bachelor's Degree in Computer Science, Engineering, or related field
- 7+ years of software engineering experience with modern languages
- Experience building applications on AWS, Azure, or GCP
- Proficiency with container technologies like Docker and Kubernetes
- Expert proficiency in SQL
- Strong ability to own initiatives and manage prioritization effectively
- Excellent analytical, problem-solving, and communication skills
Nice to have
- Experience with EDR telemetry, SOC/SIEM workflows, or threat detection
- Familiarity with major EDR platforms like CrowdStrike or SentinelOne
- Experience with relational (PostgreSQL) and graph (Neo4j) databases
- Background in building GraphQL backends and event-driven systems
- Understanding of detection logic and alert triage workflows
Stack
- Python
- Java
- Go
- Scala
- C++
- TypeScript
- GraphQL
- SQL
- PostgreSQL
- Neo4j
- Docker
- Kubernetes
- AWS
- Azure
- GCP
How you'll work
- Remote or hybrid work model depending on role and location
- Some roles may require regular presence in the Chicago office
- Fast-paced Agile development environment
What you get
- Competitive base salary range of $170,000 - $235,000 annually
- Equity package in the form of stock options
- Health, vision, and dental insurance for employee and family
- Flexible vacation policy
- Generous parental leave
- Inclusive culture with diversity and growth opportunities