Luma

Product Security Engineer – Multimodal & Generative AI

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Luma Labs is pioneering multimodal generative AI for hyper-realistic videos and images. This Product Security Engineer role is the first dedicated security hire, owning the security posture of products, services, and generative systems. You will work directly with engineering, ML, and infrastructure teams to proactively design and implement secure systems, focusing on unique risks and opportunities in multimodal video and image generation. This is a leadership-track position with both strategic ownership and deep technical execution, ideal for someone who thrives in fast-paced, high-impact environments.

Compensation Analyst

<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">About Luma Labs</h3>At Luma Labs, we’re pioneering the next generation of multimodal generative AI, enabling models to create hyper-realistic videos and images from natural language and other rich input modalities. Our products empower creators, developers, and companies to generate content that was previously impossible instantly and intelligently.As we scale our AI platform and reach millions of users, we are hiring our Product Security Engineer to set the foundation for security across everything we build. This is a critical role that blends hands-on security engineering with strategic leadership ideal for someone who thrives in fast-paced, high-impact environments and wants to shape security from day one.<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Role Overview</h3>You will be Luma Labs’ first dedicated security engineering hire. As the Product Security Engineer, you’ll own the security posture of our products, services, and generative systems. You’ll work directly with engineering, ML, infrastructure, and leadership to proactively design and implement secure systems with a strong focus on the unique risks and opportunities in multimodal video and image generation.This is a leadership-track position with both strategic ownership and deep technical execution.<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">What You’ll Do</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Own Product & Application Security: Define and drive Luma’s approach to secure product development from design reviews to automated scanning to runtime protections.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Secure GenAI Systems: Analyze and secure the full lifecycle of generative models (image, video, multimodal), including data ingestion, model inference, and API surface.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Lead Threat Modeling & Reviews: Run deep security reviews on new features, architectures, and model capabilities, with a focus on abuse prevention, data leakage, and content safety.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Build Security Infrastructure: Stand up tools and systems for static analysis, dependency scanning, secrets detection, and CI/CD hardening.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Define Misuse & Abuse Guardrails: Partner with ML and product teams to mitigate prompt injection, jailbreaks, adversarial inputs, and misuse of generative outputs.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Incident Response & Detection: Lead investigations and forensics for product-related security incidents, vulnerabilities, or model abuse cases.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Influence Org-wide Security Culture: Establish best practices, run internal training, and serve as a go-to security expert across Luma’s growing technical teams.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Build the Function: Help hire and grow a high-caliber security team as the company scales.</li></ul><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Requirements:</h3>Must-Have:<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">5+ years in security engineering, with deep experience in product/application security.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Have successful track of getting product through security certifications</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Proven ability to operate as a hands-on engineer and technical leader.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Strong understanding of generative AI systems or high-complexity ML applications.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Proficient in secure development with Python and experience securing cloud-native environments (AWS/GCP, Docker/K8s).</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Deep experience with threat modeling, secure design, and modern application security tooling (SAST, DAST, IaC scanning, etc.).</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Ability to balance pragmatism and rigor you can make fast, thoughtful decisions and execute in a fast-moving startup environment.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Excellent written and verbal communication skills; comfortable collaborating across research, product, infra, and leadership.</li></ul>Bonus / Nice-to-Have:<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Hands-on experience with generative models (e.g., diffusion, transformers, vision-language) and related risks (e.g., prompt injection, data leakage).</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Experience building or leading security teams in an early-stage startup.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Exposure to red teaming, adversarial ML, or AI safety frameworks.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Public speaking, open-source contributions, or research in security or AI fields.</li></ul><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Why This Role is Unique</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Greenfield Security: You’ll be defining the security architecture of one of the most advanced generative AI stacks in the world from the ground up.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Cross-Disciplinary Impact: Collaborate directly with ML researchers, creative technologists, infra engineers, and designers.</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Fast Path to Leadership: This is a founding role with direct access to leadership and influence over future hires and security roadmap.</li></ul>Deep Tech with Real Users: Work on cutting-edge video and image generation tools already in production and scaling fast.

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As a Freelance Senior Copywriter, you are a seasoned storyteller who loves to collaborate with creatives and strategists to bring a digital voice to life. Grasping communication challenges and devising imaginative solutions that are both brilliant and on-brand is what you do. Words are your love language and copy is your comfort-zone, but you’ve got a well-rounded knowledge of the broader industry—social media, usability, online marketing, and traditional advertising. You’re adept at using tools to help you with your trade and you know AI isn’t something that can be ignored. When confronted with something new or unfamiliar, you seize the opportunity to learn and expand your skillset. You’re self-starting, able to create top-quality work with minimal oversight, and motivated by a desire to help your team produce exceptional results.

Critical Mass is a team of 1,800 inspired folks based in 12 offices around the world, providing full-service digital capabilities for the greatest brands on Earth. Our secret sauce is our uncompromising design standards, our relentless focus on customers, and an ability to put powerful new technologies to work for our clients. We work with the best—Apple, Nike, Mars Wrigley, Nissan, Diageo, Airbnb, BMW, BNY Mellon, Johnson &amp; Johnson, and many more—brands who strive for connected digital ecosystems and unparalleled experiences. We help them get there by gaining deep insight into their consumers and orchestrating data, AI, design, media, and tech stacks around human stories. We’re a global agency founded in Canada, but digital is our home. If you know us, then you know we’re a special, quirky place that attracts big talent and tiny egos. (We actually give out a “so f-n nice” award—lots of them). But just because we’re friendly doesn’t mean we’re not a force to be reckoned with. We’re driven. Relentless. And we live our values. We’re Critical Mass, but our friends call us CM. Please call us CM!

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As a Freelance Senior Copywriter, you are a seasoned storyteller who loves to collaborate with creatives and strategists to bring a digital voice to life. Grasping communication challenges and devising imaginative solutions that are both brilliant and on-brand is what you do. Words are your love language and copy is your comfort-zone, but you’ve got a well-rounded knowledge of the broader industry—social media, usability, online marketing, and traditional advertising. You’re adept at using tools to help you with your trade and you know AI isn’t something that can be ignored. When confronted with something new or unfamiliar, you seize the opportunity to learn and expand your skillset. You’re self-starting, able to create top-quality work with minimal oversight, and motivated by a desire to help your team produce exceptional results.<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">You Will:</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Participate in strategic brainstorming, campaign and brief development, and creative execution.</li><li class="leading-relaxed">Partner with designers, art directors, and creative directors to bring concepts to life.</li><li class="leading-relaxed">Work closely with art directors and designers to ensure copy tone and style are consistent with visual tone and style.</li><li class="leading-relaxed">Work on multiple projects simultaneously.</li><li class="leading-relaxed">Interact with project teams to understand business objectives and audience demographics.</li><li class="leading-relaxed">Translate creative direction and copy points from creative briefs into engaging and effective copy concepts.</li><li class="leading-relaxed">Maintain high standards of copywriting and exercise quality control.</li><li class="leading-relaxed">Handle a high volume of varied work without letting standards slip.</li><li class="leading-relaxed">Liaise directly with clients and present work confidently.</li></ul><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">You Have:</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">5+ years’ experience writing in an agency environment—including experience with interactive media and direct marketing.</li><li class="leading-relaxed">Exceptional writing skills, including the ability to write in a range of voices and styles for varied projects with diverse audiences.</li><li class="leading-relaxed">Proven aptitude for quick, creative thinking with acute attention to detail within demanding deadlines.</li><li class="leading-relaxed">A keen enthusiasm for and demonstrable understanding of web trends and technologies.</li><li class="leading-relaxed">A strong understanding of marketing (especially direct marketing) and advertising principles.</li><li class="leading-relaxed">Experience with brainstorming, campaign development, creative brief development, and creative execution.</li><li class="leading-relaxed">The ability to work on multiple projects simultaneously and effectively juggle diverse writing demand.</li><li class="leading-relaxed">Experience managing complex and rapidly evolving copy decks.</li></ul>Critical Mass is an equal opportunity employer.The Critical Mass Talent Acquisition team will only communicate from email addresses that use the URLs criticalmass.com, omc.com and us.greenhouse-mail.io. We will not use apps such as Facebook Messenger, WhatsApp, or Google Hangouts for communicating with you. We will never ask you to send us money, technology, or anything else to work for our company. If you believe you are the victim of a scam, please review your local government consumer protections guidance and reach out to them directly._If U.S. based: https://www.consumer.ftc.gov/articles/job-scams#avoidIf Canada based: https://www.canada.ca/en/services/finance/consumer-affairs.htmlIf U.K. based: https://www.gov.uk/consumer-protection-rightsIf Costa Rica based: https://www.consumo.go.cr/educacionconsumidor/consejospracticos.aspx_

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