Offensive Security Engineer

Staff Offensive Security Engineer (Core Weave)

Core Weave is The Essential Cloud for AI™. Built for pioneers by pioneers, Core Weave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, Core Weave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, Core Weave became a publicly traded company (Nasdaq: CRWV) in March 2025.

Mid‑Senior level

Full‑time

Information Technology

• Perform penetration testing as well as purple and red team exercises
• Conduct threat modeling, code reviews, and design reviews for development teams within the business
• Research/stay abreast of new hacking techniques and find ways to counter them
• Find effective solutions to information security related problems
• Develop best practices and improve security standards for the organization to adhere to while maintaining our internal compliance stance and security posture
• Provide solutions to complex issues; handle multiple tasks in a fast‑paced environment; set priorities; meet deadlines per project scope
• Present complex, technical information to both technical and non‑technical audiences
• Strong time management, technical writing, presentation, and documentation skills
• Work with minimal supervision, attention to detail, and follow‑through
• Other work‑related duties as assigned

• Proficiency in using at least one programming or scripting language (e.g., Go, Python, C++/Java) to solve automatable tasks and perform code reviews
• At least five years of experience in the offensive information security industry
• Penetration testing experience
• Strong technical background and experience writing and using offensive security tooling
• Experience using Kubernetes and Kubernetes‑related security measures
• Extensive experience with Linux OS environments
• Ability to navigate ambiguity and determine solutions to underlying problems
• Excellent interpersonal, verbal, and written communication skills with strong attention to detail
• Ability to work with minimal supervision while handling multiple tasks in a fast‑paced environment
• A strong desire to learn new technologies and skills

• Certifications such as Sec+, Net+, OSCP, or other relevant industry certifications
• Understanding of best practices and how to implement them at a business‑wide level
• 5+ years’ experience in the information security industry or a related role
• Experience with EDR tuning, detections‑as‑code, and threat hunting as a Blue Team member

The Security Engineer works standard business hours. Core Weave is a fast growth startup, and the selected candidate must be willing to be flexible when needed, including availability outside of regular business hours for critical issues or meetings.

• Be Curious at Your Core
• Act Like an Owner
• Empower Employees
• Deliver Best‑in‑Class Client Experiences
• Achieve More Together

Base salary range: $188,000 to $275,000. The starting salary will be determined based on job‑related knowledge, skills, experience, and market location. In addition to base salary, total rewards include a discretionary bonus, equity awards, and a comprehensive benefits program.

• Medical, dental, and vision insurance – 100% paid by Core Weave
• Company‑paid Life Insurance
• Voluntary supplemental life insurance
• Short and long‑term disability insurance
• Flexible Spending Account
• Health Savings Account
• Tuition Reimbursement
• Employee Stock Purchase Program (ESPP)
• Mental Wellness Benefits through Spring Health
• Family‑forming support provided by Carrot
• Paid Parental Leave
• Flexible, full‑service childcare support with Kinside
• 401(k) with generous employer match
• Flexible PTO
• Catered lunch each day in our office and data center locations
• Casual work environment
• Work culture focused on innovative disruption

Hybrid work environment is prioritized; remote work may be considered for candidates located more than 30 miles from an office, based on role requirements for specialized skill…