Jobs in United States

Lead Security Architect in United States

2,434 active opportunities · Updated October 2026

Explore current lead security architect jobs across United States. Filter by work mode, employment type, experience, department, date posted and distance.

O
📍 San Francisco, California, United States· Full-time
✓ Quality checkedCompany trend -82%

About the Team The Privacy Engineering Team at OpenAI is committed to integrating privacy as a foundational element in OpenAI's mission of advancing Artificial General Intelligence (AGI). Our focus is on all OpenAI products and systems handling user data, striving to uphold the highest standards of data privacy and security. We build essential production services, develop novel privacy-preserving techniques, and equip cross-functional engineering and research partners with the necessary tools to ensure responsible data use. Our approach to prioritizing responsible data use is integral to OpenAI's mission of safely introducing AGI that offers widespread benefits. About the Role As a part of the Privacy Engineering Team, you will work on the frontlines of safeguarding user data while ensuring the usability and efficiency of our AI systems. You will help us understand and implement the latest research in privacy-enhancing technologies such as differential privacy, federated learning, and data memorization. Moreover, you will focus on investigating the interaction between privacy and machine learning, developing innovative techniques to improve data anonymization, and preventing model inversion and membership inference attacks. This position is located in San Francisco. Relocation assistance is available. In this role, you will: Design and prototype privacy-preserving machine-learning algorithms (e.g., differential privacy, secure aggregation, federated learning) that can be deployed at OpenAI scale. Measure and strengthen model robustness against privacy attacks such as membership inference, model inversion, and data memorization leaks—balancing utility with provable guarantees. Develop internal libraries, evaluation suites, and documentation that make cutting-edge privacy techniques accessible to engineering and research teams. Lead deep-dive investigations into the privacy–performance trade-offs of large models, publishing insights that inform model-training and prod

AWSRestMachine LearningAI
L
📍 Lynnwood, WA, United States
✓ High-confidence listingCompany trend +500%
Quick readStrong listing-quality and freshness signals

Leidos is seeking a Test and Integration Engineer to lead cutting-edge testing and validation efforts within the Undersea Systems Division (USD) . This role is a unique opportunity to drive innovation in testing underwater vehicle systems, maritime sensors, subsea telemetry, and ISR solutions that support critical defense and national security missions. You'll contribute to a multidisciplinary team focused on testing, integrating, and validating advanced maritime technologies, ensuring system reliability and performance from prototype design to full-scale system deployment for ongoing Navy missions. Leidos’ Undersea Systems Division is a recognized leader in C4ISR technologies, delivering innovative, mission-critical solutions across sensor networks, unmanned systems, and tactical platforms . We’re known for achieving “industry firsts” in the most challenging maritime domains. Join us and be part of a world-class team delivering unmatched solutions for today's most pressing maritime missions. Why Join Us? Make an Impact : Your work will directly support U.S. maritime dominance and national security. Lead Innovation : Be at the forefront of applying innovative technology and autonomy to real-world maritime systems. Work with Experts : Collaborate with a top-tier team of engineers, scientists, and technicians located across the U.S. Shape the Future : Influence both the strategic and tactical direction of next-generation subsea technologies. What You’ll Do Test and Validate: Write, develop and execute comprehensive test plans, procedures, and protocols to ensure system functionality, reliability, and compliance with requirements. Integrate systems and conduct hands-on testing: Write, develop, and execute integration plans to bring complex systems together. Perform field</b

O
📍 San Francisco, California, United States· Full-time
✓ High-confidence listingCompany trend -82%
Quick readStrong listing-quality and freshness signals

About the Role We’re looking for a senior individual contributor to lead GTM Strategy & Operations for Security & Safety, in close partnership with the Policy team. This role will help translate policy, security, and safety considerations into clear GTM strategies, operating models, launch plans, and scalable execution mechanisms. You’ll work across Product, Policy, Safety, Security, Legal, Data, Sales, Customer Success, Marketing, and Revenue Operations to understand customer and field needs, shape business recommendations, and support the successful adoption of security- and safety-critical products and capabilities. This role is ideal for someone who combines strong strategic and operational judgment with the ability to work effectively on complex policy-adjacent topics. You’ll help ensure that GTM plans reflect relevant policy requirements and that recurring customer and field insights inform future policy and product decisions. In this role, you will: Define the GTM operating model for the Security & Safety program, including ownership, decision forums, planning cadences, and escalation paths. Partner with Policy, Product, Security, Safety, Legal, and Data to translate policy considerations into actionable GTM guidance and operating processes. Develop go-to-market strategy for cybersecurity models, including target customers, use cases, commercialization approach, launch readiness, success metrics, and field enablement. Build mechanisms to capture recurring customer and field needs related to security, safety, application security, and policy implementation. Translate customer feedback and field requirements into recommendations for product roadmaps, policy development, enablement, and operational priorities. Support the operationalization of data-retention policies and related customer or deployment requirements across GTM. Track customer demand, implementation blockers, and market signals to refine GTM strategy and inform Policy and Product partne

AWSRestAIGo
R
📍 San Mateo, CA, United States· Full-time
✓ High-confidence listingCompany trend -100%

From $196.8K/yr

Quick readStrong listing-quality and freshness signals

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Senior Security Engineer on the Detection and Response (D&R) team at Roblox, you’ll protect our user community alongside the underlying platform infrastructure. You’ll design high-fidelity detections, engineer security data platforms, and respond alongside the team during incidents. This is a hybrid in-office role in San Mateo. You Will: Deliver robust D&R capabilities: Engineer high-fidelity detections end-to-end. Lead partners through threat modeling and logging, to deploying actionable alerts, while keeping false positives low. Build security data pipelines: Develop security data pipelines and actively contribute to internal software and data platforms, collaborating across engineering teams. Ensure service reliability: Participate in an on-call rotation to keep detection and response services healthy. Embody security culture: Serve as a trusted security partner across Roblox, helping protect our community and enterprise while fostering a culture grounded in trust, ownership, and shared responsibility. You Have: 3+ years of experience in Security Data Engineering: You have built services that are efficient, reliable, and scalable using programming languages like Golang or Py

PythonSQLAWSGit
O
📍 Washington, District of Columbia, United States· Full-time· Remote
✓ High-confidence listingCompany trend -82%
Quick readStrong listing-quality and freshness signals

About the Team The OpenAI for Government team is a dynamic, mission-driven group leveraging frontier AI to transform how governments achieve their missions. Our team works to empower public servants with secure, commercial and specialized national-security models that address government's mission needs, meet their technical requirements, and provide the highest degree of reliability and safety. As part of the OpenAI for Government team you will work with U.S. intelligence community and international public sector customers, helping to accelerate adoption through hands‑on support, tailored training, and early insights—so civil servants can spend less time on red tape and more on meaningful work. If you're passionate about responsibly deploying frontier AI to uplift public institutions and transform how government works, we want you on our team. About the Role Our OpenAI for Government team has a unique mission to help government customers understand the transformative impact that highly capable AI models can bring to their critical missions. This role combines technical understanding, strategic vision, partnership management, and value-driven strategy specifically tailored to government customers. As a Capture Manager, you’ll identify and drive key opportunities through the government sales cycle, from pipeline generation to closure. You’ll collaborate closely with industry partners, potential customers, policy makers, and internal experts to help government customers advance their missions through AI. This role is based in Washington, DC. In this role, you will: Pipeline Development : Partner with O4G GTM teams to identify, build, and maintain a multi-year pipeline of strategic opportunities. Capture Management : Lead the full capture lifecycle — from opportunity identification and qualification through win strategy, teaming, proposal, and award. Content Development : Write and edit proposal sections, weaving together inputs from subject matter experts into cohesive

AWSRestAIGo
P
📍 San Francisco, California, United States· Full-time
✓ Quality checkedCompany trend -72.3%

We believe that the way people interact with their finances will drastically improve in the next few years. We’re dedicated to empowering this transformation by building the tools and experiences that thousands of developers use to create their own products. Plaid powers the tools millions of people rely on to live a healthier financial life. We work with thousands of companies like Venmo, SoFi, several of the Fortune 500, and many of the largest banks to make it easy for people to connect their financial accounts to the apps and services they want to use. Plaid’s network covers 12,000 financial institutions across the US, Canada, UK and Europe. Founded in 2013, the company is headquartered in San Francisco with offices in New York, Washington D.C., London and Amsterdam. We are hiring for a leader for the newly forming Detection and Response team at Plaid. Our mission is to protect Plaid's financial infrastructure by detecting and responding to suspicious activity across the company. We are responsible for the entire lifecycle of detection and response, including detection infrastructure, AI triage and response, investigation tooling, Red Teaming, and Fraud Operations. Security is foundational to the trust thousands of businesses and millions of consumers place in Plaid, and we work directly to reduce risks and enable our business to move faster and safer. As the Head of Detection and Response, you will be the founding leader responsible for standing up and evaluating Plaid's detection and response team. You will lead a specialized technical team of analysts and engineers, gain deep experience partnering with the CISO and cross-functional engineering leaders, and build critical security infrastructure at scale. This is a unique leadership opportunity to manage a team that encompasses traditional security operations alongside Red Teaming and Fraud Operations, directly impacting Plaid's security posture and long-term stability. Responsibilities: Form and set up Plaid’

C
📍 New York, New York, United States· Full-time· Remote
✓ High-confidence listingCompany trend -79.2%
Quick readStrong listing-quality and freshness signals

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! The Opportunity We're seeking an experienced Head of Non-Tech Talent to lead our comprehensive hiring strategy for all non-technical roles. This is a pivotal position as we build out our capabilities across General and Administrative (G&A) Go to Market (GTM) Finance, Legal, and other business-critical functions. You'll transform how we attract, hire, and develop top talent beyond while building and coaching a high performing global talent team. This is an opportunity to join an ambitious high performing, scale up company. Key Responsibilities Strategic Talent Leadership: Develop and execute the non-tech talent strategy aligned with Cohere's growth plan and business objectives while partnering with TA leads across the organization Team Development & Coaching: Recruit, mentor, and develop a high-performing team of non-tech recruiters, sourcers, and coordinators; create career paths and succession plans Process Innovation: Design and implement scalable hiring processes for non-technical roles while maintaining our high-quality standards Business Partnership: Serve as the primary talent advisor to our Talent Leads and partne

AIFinanceRecruitmentHR
Z
📍 Boston, Massachusetts, United States· Full-time· Remote
✓ High-confidence listing

From $44.6K/yr

Quick readStrong listing-quality and freshness signals

Zscaler (NASDAQ: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange™️ platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across 160+ public exchanges globally and thousands of private exchanges at the edge, the SASE-based Zero Trust Exchange is the world’s largest in-line cloud security platform. We believe the future of work is Human + AI and are building an AI-native enterprise where human potential is amplified by machine intelligence to solve the world’s hardest security challenges. Driven by deep customer obsession, we are committed to the mission, outcome, and to each other. We bring these commitments to life through three core behaviors: ownership and collaboration, trust through outcomes and impact, and a challenge culture with ongoing feedback. Ready to make an impact at the company pioneering security transformation in the AI era? Join us at Zscaler. Role We are looking for a Sales Development Representative to join our team. This is a Hybrid role, reporting to the Manager of Sales Development in the Sales Development department. You will have the opportunity to be a key contributor to Zscaler’s sales pipeline and revenue growth through lead qualification. This is a hybrid onsite role that requires 2 days a week in the office (Plano, TX/Raleigh, NC/or Boston, MA) . What you’ll do (Role Expectations) Researching and prospecting into organizations by emailing, calling, networking and other creative means to lead early stage pipelines Qualifying and scheduling well qualified appointments with main decision makers within global 2000 or "targeted" companies through inbound and outbound leads Utilizing the CRM to maintain accurate activity, contact, and account information of all customers and prospects Who You Are (Success Profile) You act like an owner. Your passio

AWSGitAgileAI
C
📍 San Francisco, California, United States· Full-time· Remote
✓ High-confidence listingCompany trend -79.2%
Quick readStrong listing-quality and freshness signals

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! As Cohere scales its enterprise AI platform and accelerates its position as a leader in sovereign AI solutions, we need a strategic Corporate Development leader to drive high-impact partnerships, M&A, and long-term business development. This role will focus on expanding Cohere’s ecosystem through strategic alliances, channel relationships, and targeted acquisitions that support our growth in regulated industries, government sectors, and global markets. Key Responsibilities M&A Strategy: Evaluate and execute acquisitions or investments in complementary technologies that strengthen our core platform, particularly in compute infrastructure, specialized AI capabilities, and regulatory compliance tools Lead due diligence processes with cross-functional teams to ensure technical integration feasibility and strategic alignment Manage post-merger integration to maximize value realization and revenue synergies Market Expansion: Support entry into new verticals and geographies through targeted collaborations with industry leaders and government partners Develop market entry strategies that address regulatory requirements and sover

GitAIGoMarketing
S
📍 San Francisco, CA, United States
✓ Quality checkedCompany trend -95.5%

Employee Applicant Privacy Notice Who we are: Shape a brighter financial future with us. Together with our members, we’re changing the way people think about and interact with personal finance. We’re a next-generation financial services company and national bank using innovative, mobile-first technology to help our millions of members reach their goals. The industry is going through an unprecedented transformation, and we’re at the forefront. We’re proud to come to work every day knowing that what we do has a direct impact on people’s lives, with our core values guiding us every step of the way. Join us to invest in yourself, your career, and the financial world. The Role: Positioned in the first line of defense (1LOD) and reporting to the Head of Business Controls, this experienced executive will act as the Business Controls Lead for SoFi’s Technology and Cybersecurity organizations. This includes comprehensive coverage of Engineering, Information Security, Infrastructure, and Data across the full SoFi Legal structure: SoFi Inc., SoFi Bank, Galileo, Technisys, and SoFi Hong Kong. The Business Controls Lead will act as the direct advisor to the Chief Technology Officer (CTO), Chief Information Security Officer (CISO), and their senior leadership teams. You will lead a team of experienced IT risk & controls team charged with promoting risk awareness and ensure the overall effectiveness of risk and compliance management program implementation and execution across the 1LOD. This role provides support, advisory services, and enables strategic alignment directly to department heads to accelerate and ensure quality execution. You will be responsible for supporting and driving consistent 1LOD adherence to critical programs, such as building and maintaining risk and control self-assessments (RCSAs); identification and evaluation of control effectiveness through control testing; 1LOD risk reporting; and supporting audits and regulatory exams. You will monitor the first l

AIFinanceSupply Chain
C
📍 San Francisco, California, United States· Full-time
✓ High-confidence listingCompany trend -79.2%

£215K – £260K/yr

Quick readStrong listing-quality and freshness signals

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! About the Role Cohere is seeking a Global Public Policy Manager to lead policy engagement on compute infrastructure, export controls, AI competitiveness, and sovereign AI strategies. Governments increasingly view AI as critical national infrastructure and are investing heavily in compute capacity, energy resources, and domestic AI ecosystems. This role will help position Cohere as a trusted partner in emerging discussions around AI infrastructure, national competitiveness, and sovereign AI deployment. Key Responsibilities Monitor and analyze developments related to AI infrastructure, data centers, energy policy, semiconductor policy, export controls, and national AI strategies. Develop policy positions on sovereign AI, compute access, digital sovereignty, and AI competitiveness. Support engagement with governments developing AI infrastructure investment programs and national AI initiatives. Collaborate with commercial, product, and corporate development teams on strategic opportunities involving public-private partnerships. Represent Cohere in policy discussions related to AI infrastructure, energy requirements, and technology c

GitRestAIGo
C
📍 San Francisco, California, United States· Full-time
✓ High-confidence listingCompany trend -79.2%

From £330K/yr

Quick readStrong listing-quality and freshness signals

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! Role Overview: Cohere is searching for an experienced Head of Strategic Finance who will own financial planning, business forecasting, product pricing strategy, and assist in fundraising initiatives. In this leadership role, you and your team will provide analysis to support contract negotiations, growth opportunities, and influence corporate strategy. Reporting to the CFO and partnering with the Executive Team, you will lead financial, strategic, and fundraising insights to drive operational performance. Key Responsibilities: Lead strategic financial planning, budgeting, forecasting, long-term planning, and assist in fundraising strategy development. Partner with the CFO and Investor Relations to assist to prepare materials for fundraising, investor relations, and board reporting. Partner with senior leadership to evaluate key business initiatives Lead and perform financial analyses for a variety of strategic decisions, including Annual Operating Plan, M&A, strategic investments, partnerships, capital market transactions, and fundraising opportunities. Provide recommendations to executive management based on both financial

GitAIGoRust
C
📍 San Francisco, California, United States· Full-time
✓ High-confidence listingCompany trend -79.2%

From £200K/yr

Quick readStrong listing-quality and freshness signals

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! Who are we? Cohere is at the forefront of AI innovation, building cutting-edge language models and AI systems. Our Finance team plays a critical role in supporting our rapid growth and ensuring operational excellence. We value technical expertise, collaborative problem-solving, and a commitment to accuracy and compliance. This role offers the opportunity to make a significant impact on our financial infrastructure while working at the intersection of finance and transformative technology. As we scale our business and navigate an evolving financial landscape, you'll play a pivotal role in driving operational excellence and serving as a key partner on accounting implications of major business decisions. In this role, you will: Lead and own the complete month-end close process, ensuring timely and accurate financial reporting across all entities Oversee all audit activities, partnering with external auditors and managing internal control documentation Collaborate on special projects including system implementations, process improvements, and acquisition integration efforts Direct general ledger operations, account reconciliations,

C
📍 San Francisco, California, United States· Full-time
✓ High-confidence listingCompany trend -79.2%

From £330K/yr

Quick readStrong listing-quality and freshness signals

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! Role Overview: Cohere is at an inflection point, scaling its enterprise AI platform and expanding globally. As our first dedicated Investor Relations hire, you will build the foundation for structured investor engagement, ensuring transparency, strategic storytelling, and alignment with financial stakeholders. This role is critical for Cohere’s market positioning, and long-term public-market readiness. You will build the Investor Relations function from the ground up & shape how the market perceives Cohere’s leadership in enterprise AI. Key Responsibilities: Investor Engagement & Strategy Develop and execute a comprehensive investor relations strategy, including investor presentations and roadshows. Develop, refine, and present investor materials and presentations that clearly articulate the company’s strategy and results. Lead the creation and refinement of financial and valuation models, benchmarking analyses, and peer/industry work to inform messaging and strategy. Stakeholder & Relationship Management Build and maintain relationships with existing and potential investors across institutional, strategic, and finan

C
📍 San Francisco, California, United States· Full-time
✓ High-confidence listingCompany trend -79.2%
Quick readStrong listing-quality and freshness signals

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! NOTE: This Senior Staff level career opportunity is a senior level individual contributor role. As a Senior Manager of Financial Planning & Analysis at Cohere, your responsibilities include: Establish and maintain comprehensive departmental forecasting processes with regular vs. actuals analysis Design, implement, and track key performance indicators (KPIs) across the organization Build scalable financial models and planning frameworks to support rapid business growth Collaborate with department heads to understand business needs and translate them into financial requirements Conduct variance analysis and provide actionable insights to leadership on financial performance Develop and maintain financial reporting dashboards for executive leadership Drive process improvements and automation in FP&A workflows Partner with cross-functional teams on strategic initiatives and M&A activities Ensure compliance with financial reporting standards and internal controls Strategic Planning: Lead the annual and multi-year long-range planning (LRP) processes. You will bridge the gap between high-level vision and granular departmenta

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