Sr. Offensive Security Engineer
Span
| Company | Span |
| Category | Engineering |
| Location | San Francisco |
| Remote | On-site (inferred) |
| Employment | Not stated |
| Level | Senior |
| Salary | USD 138k–184k |
| Posted | 3 Jun 2026 |
| Last verified | 30 Jul 2026 |
| Source | Employer career page (ashby) |
Description
OUR MISSION
SPAN is enabling electrification for all ⚡
WE ARE A MISSION-DRIVEN COMPANY DESIGNING, BUILDING, AND DEPLOYING PRODUCTS THAT ELECTRIFY THE BUILT ENVIRONMENT, REDUCE CARBON EMISSIONS, AND SLOW THE EFFECTS OF CLIMATE CHANGE.
- Decarbonization is the process to reduce or remove greenhouse gas emissions, especially carbon dioxide, from entering our atmosphere.
- Electrification is the process of replacing fossil fuel appliances that run on gas or oil with all-electric upgrades for a cleaner way to power our lives.
AT SPAN, WE BELIEVE IN:
- Enabling homes and vehicles powered by clean energy
- Making electrification upgrades possible
- Building more resilient homes with reliable backup
- Designing a flexible and distributed electrical grid
THE ROLE
We are looking for a hands-on individual with an offensive security engineering mindset to join us as a Senior Offensive Security Engineer (Threat & Response) as part of the Security team at SPAN. In this role, you will act as our internal ethical hacker, conducting full-scope, threat intelligence-informed adversary emulations across our cloud infrastructure, proprietary applications, and corporate IT assets. We are looking for someone who can continuously simulate real-world cyber attacks to identify vulnerabilities before malicious actors do, while seamlessly leading the full Technical Incident Response (IR) lifecycle, from initial triage and containment through to eradication and post-incident recovery, when security events occur.
WHAT YOU’LL DO (RESPONSIBILITIES)
- Execute full-scope adversary emulations against any valuable objectives across SPAN's cloud environments , proprietary web/mobile applications, APIs, and corporate IT infrastructure.
- Lead Technical Incident Response operations during live security events, leveraging your understanding of attacker TTPs to direct rapid containment, threat eradication, and system recovery.
- Provide a crucial feedback loop to our Cloud Infrastructure and Software Engineering teams by translating offensive findings into proactive detection rules and actionable hardening requirements.
- Own the end-to-end VDP pipeline, serving as the primary internal owner for our public vulnerability disclosure channel, managing communications with external researchers, and validating incoming reports.
- Build automated scripts and tools to streamline continuous internal security testing, vulnerability scanning, and VDP triage workflows
- Utilize frameworks like MITRE ATT&CK to design and execute red team scenarios that rigorously test the organization’s live detection capabilities, defense evasion thresholds, and IR readiness.
- Develop and maintain Incident Response playbooks and runbooks to standardize our technical response to cloud, application, and infrastructure breaches.
- Conduct root-cause analysis and digital forensics post-incident to reconstruct attacker timelines, identify Indicators of Compromise (IoCs), and perform comprehensive post-incident reviews.
WHAT YOU’LL BRING (QUALIFICATIONS)
- Experience: 6+ years of professional experience in offensive security (penetration testing, red teaming), dedicated technical incident response, or a closely related field.
- Incident Response (IR) Mastery: Demonstrated experience executing the full IR lifecycle (e.g., NIST SP 800-61 or SANS frameworks) and managing critical security breaches under high-pressure conditions.
- DFIR & Log Analysis: Strong capability in parsing complex log data, analyzing system telemetry, and leveraging forensics techniques to track adversarial movement across a network.
- Cloud Security: Advanced hands-on experience exploiting and securing modern cloud infrastructure , containerized environments (Docker/Kubernetes), and complex IAM policies.
- Application Hacking: Deep technical expertise in web application and API security, including a masterful understanding of the OWASP Top 10 and complex business
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