Top Tech Jobs & Startup Jobs

Build backend APIs, GraphQL services, ETL pipelines, event-driven systems, and distributed infrastructure for cybersecurity workflows involving vulnerability intelligence, EDR validation, deception, tripwires, and autonomous defense. The role includes production reliability, monitoring, incident response, debugging, customer-facing security features, and collaboration with engineering and product teams. The engineer will also mentor less experienced developers and ensure security automation is safe, explainable, and reversible.

Own and evolve the company-wide SRE strategy, reliability standards, observability practices, incident management, service ownership, SLOs, and on-call operations. Lead cross-functional reliability initiatives, establish dashboards, alerts, runbooks, and escalation paths, improve production readiness and incident response, and operate large-scale distributed systems across AWS and Kubernetes. Participate in a 24/7 on-call rotation and help shape the SRE function.

Lead the architecture and operation of Horizon3’s developer experience platform, including local development, CI/CD, build systems, container images, artifact promotion, release workflows, security gates, and delivery observability. Build reusable tooling and paved paths, establish secure AI-assisted development practices, improve reproducibility and supply-chain security, and mentor engineers. Partner across Platform, Security, QA, and application teams to drive adoption, reliability, delivery speed, and continuous improvement.

Lead the design and operation of AWS and Kubernetes platforms, infrastructure automation, CI/CD, observability, security, and developer self-service capabilities. Drive cross-team platform initiatives, establish technical standards, improve reliability and operational practices, participate in incident response, mentor engineers, and guide architecture for regional and ephemeral environments.

Own the production lifecycle for machine learning and LLM-backed systems, including training and post-training pipelines, inference serving, model releases, monitoring, retrieval infrastructure, and cost and latency optimization. Partner with AI researchers and engineering teams to move prototypes into reliable production capabilities across customer tenants. Develop ETL and GraphQL features, enforce tenant isolation, and support deployments in regulated or customer-controlled environments.

Own detection engineering domain expertise for EDR and endpoint platforms. Define detection, effectiveness, and tuning requirements; establish acceptance criteria; validate releases; and guide Product, Engineering, AI research, and Attack teams. Administer and tune production EDR systems, evaluate vendor policy semantics, maintain detection coverage, assess false positives and negatives, and define correct remediation recommendations. Use Python, SQL, APIs, and telemetry analysis to support technical decisions and documentation.

Leads and scales the MSP/MSSP engineering team responsible for multi-tenant SaaS platform capabilities, including account hierarchies, tenant isolation, delegated administration, dashboards, licensing, and white-labeling. Oversees architecture, engineering quality, roadmap execution, partner support, hiring, mentoring, and team development. Collaborates with Product, Partnerships, Customer Success, Sales, Finance, and engineering leadership while balancing strategic delivery with operational needs.

Serve as a federal cybersecurity Sales Engineer by engaging customers, delivering tailored product demonstrations and proofs of concept, developing solutions, supporting RFPs/RFIs, training sales teams, and relaying field feedback to product and engineering. The role requires cybersecurity pre-sales experience, familiarity with cloud, identity, networking, SOC and security technologies, DoW offensive cyber operations experience, and eligibility for federal security clearance. It is remote but based in the Washington, DC region and requires up to 50% domestic and international travel.

Support federal cybersecurity sales by conducting technical discovery, product demonstrations, proof-of-concepts, solution design, RFP/RFI responses, sales training, and occasional post-sales implementation support. The role requires deep cybersecurity knowledge, familiarity with cloud, identity, networking, SOC, SIEM, SOAR, EDR, PTaaS, and MDR environments, strong communication skills, and the ability to obtain security clearance.

Own Horizon3’s social media strategy and execution across priority channels. Create technically credible content, manage editorial calendars, support launches and events, grow employee advocacy and executive amplification, engage communities, protect brand reputation, and use performance data to optimize content and connect social activity to marketing impact.