Staff Security Engineer, Penetration Testing

About Life360 Life360’s mission is to keep people close to the ones they love. Our category-leading mobile app and Tile tracking devices empower members to protect the people, pets, and things they care about most with a range of services, including location sharing, safe driver reports, and crash detection with emergency dispatch. Life360 serves approximately 88 million monthly active users (MAU), as of June 2025 across more than 180 countries. Life360 delivers peace of mind and enhances everyday family life with seamless coordination for all the moments that matter, big and small. By continuing to innovate and deliver for our customers, we have become a household name and the must-have mobile-based membership for families (and those friends that basically are family). Life360 has more than 500 (and growing!) remote-first employees. For more information, please visit life360.com . Life360 is a Remote-First company, which means a remote work environment will be the primary experience for all employees. All positions, unless otherwise specified, can be performed remotely (within the US) regardless of any specified location above. About the Job We are looking for a Staff Security Engineer, Penetration Testing, who will serve as a trusted offensive security expert at Life360. In this role, you will lead penetration testing and red team activities across our mobile applications, APIs, AWS cloud environments, and hardware devices. You will identify vulnerabilities that matter, design real-world attack simulations, and provide clear guidance to help our engineering teams close security gaps before they can be exploited. You will bring deep expertise in offensive security and hands-on experience with penetration testing in complex environments. You know how to think like an attacker and can translate that mindset into actionable insights that strengthen defenses. You will partner closely with product, cloud, and hardware engineering teams to embed security into the design process, validate that our controls work as intended, and continuously raise the bar for tenacity across the organization. Success in this role means you are not only finding and exploiting weaknesses but also helping Life360 build durable solutions that protect millions of families who rely on our platform. You will influence security culture, scale your impact through automation and knowledge sharing, and help us stay ahead of emerging threats with a forward-thinking, offensive lens. The US-based salary range for this position is $165,000-$242,500. We consider an individual’s background and experience in determining final salary; therefore, base pay offered may vary considerably depending on geographic location, job-related knowledge, skills, and experience. The compensation package includes a wide range of medical, dental, vision, financial, and other benefits, as well as equity. What You’ll Do Lead penetration tests of Life360’s mobile applications, APIs, AWS environments, and hardware devices to identify and validate vulnerabilities. Design and execute advanced attack simulations that mirror real-world adversaries and provide actionable insights to engineering teams. Develop proof-of-concept exploits and technical reports that clearly communicate risk and drive remediation. Collaborate with product, cloud, and hardware engineers to embed security into the design and development lifecycle. Validate the efficiency of defensive controls and influence improvements based on offensive findings. Build tools, automation, and repeatable methodologies to scale penetration testing across Life360’s ecosystem. Mentor engineers and share offensive security knowledge to raise the bar for security awareness across the company. Stay ahead of emerging threats and offensive security techniques to ensure Life360 remains durable against evolving attack vectors. What We’re Looking For 7+ hands-on experience in penetration testing with a focus on mobile applications, APIs, AWS cloud environments, and hardware devices. Deep expertise in offensive security techniques, exploit development, and red teaming. Proficient knowledge of common vulnerabilities, attack vectors, and frameworks such as OWASP, MITRE ATT&CK, and NIST. Proficiency with modern penetration testing tools and the ability to build custom scripts and exploits when needed. Ability to clearly communicate technical findings to both engineers and business stakeholders, translating risk into actionable outcomes. Experience collaborating with cross-functional teams and influencing secure design decisions. Good at solving problems, enthusiastic to learn, and able to adjust swiftly in a bustling environment. Interest for staying ahead of emerging threats and continuously raising the bar for security. Nice to Have Skills Offensive security certifications such as OSCP, OSWE, OSEE, CREST, or GXPN. Experience with hardware hacking, reverse engineering, or firmware analysis. Knowledge of secure software development practices and the ability to influence design reviews. Knowledge with security automation frameworks and custom tool development. Prior experience leading red team engagements or building offensive security programs. Background in threat modeling, exploit research, or vulnerability discovery at scale. Proficient contributions to the security community through research, publications, or open-source projects. Our Benefits Competitive pay and benefits Medical, dental, vision, life and disability insurance plans (100% paid for employees) 401(k) plan with company matching program Mental Wellness Program & Employee Assistance Program (EAP) for mental well being Flexible PTO, 13 company-wide days off throughout the year Winter and Summer Weeklong Synchronized Company Shutdowns Learning & Development programs Equipment, tools, and reimbursement support for a productive remote environment Free Life360 Platinum Membership for your preferred circle Free Tile Products Life360 Values Our company’s mission driven culture is guided by our shared values to create a trusted work environment where you can bring your authentic self to work and make a positive difference Be a Good Person - We have a team of high integrity people you can trust. Be Direct With Respect - We communicate directly, even when it’s hard. Members Before Metrics - We focus on building an exceptional experience for families. High Intensity, High Impact - We do whatever it takes to get the job done. Our Commitment to Diversity We believe that different ideas, perspectives and backgrounds create a stronger and more creative work environment that delivers better results. Together, we continue to build an inclusive culture that encourages, supports, and celebrates the diverse voices of our employees. It fuels our innovation and connects us closer to our customers and the communities we serve. We strive to create a workplace that reflects the communities we serve and where everyone feels empowered to bring their authentic best selves to work. We are an equal opportunity employer and value diversity at Life360. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status or any legally protected status. We encourage people of all backgrounds to apply. We believe that a diversity of perspectives and experiences create a foundation for the best ideas. Come join us in building something meaningful. Even if you don’t meet 100% of the below qualifications, you should still seriously consider applying! #LI-Remote