Senior Security Engineer - Enterprise SaaS

Join our dynamic team as a Senior Security Engineer specializing in Enterprise SaaS solutions. In this pivotal role, you will leverage your expertise to enhance the security posture of our software offerings, ensuring robust protection against emerging threats. Collaborate with cross-functional teams to implement security best practices and drive initiatives that safeguard our clients' data.

CoreWeave is the definitive cloud solution for AI™. Designed by innovators for innovators, we provide a robust platform of technology, tools, and expert teams that empower trailblazers to confidently build and scale AI solutions. Trusted by top AI research labs, startups, and global enterprises, CoreWeave merges exceptional infrastructure performance with profound technical know-how to expedite breakthroughs and transform computing power into actionable capability. Established in 2017, CoreWeave became publicly traded (Nasdaq: CRWV) in March 2025. Discover more at www.coreweave.com.What You Will Do:The Enterprise Security team at CoreWeave is tasked with safeguarding our daily operations—covering identity, endpoints, networks, and SaaS—ensuring the company can maintain agility without sacrificing security. This team is accountable for the controls, guardrails, and automation that protect our workforce, contractors, and vital business applications within a cloud-native environment.If you're passionate about zero trust, phishing-resistant MFA, and creating secure-by-default experiences that enhance productivity, this is the perfect team for you.About the Role:As a Senior Security Engineer, Enterprise Security, you will architect and implement the security measures that support CoreWeave's workforce and enterprise framework. You will spearhead projects related to identity, access management, device and endpoint security, and SaaS security—collaborating closely with IT Engineering, Endpoint, Network, and various security teams.Your routine will involve a blend of hands-on engineering (coding, building integrations, fine-tuning controls) and architecture and program leadership (setting standards, defining frameworks, and encouraging adoption across teams). You will be accountable for transforming high-level goals—such as “implementing zero trust for workforce access” or “deploying phishing-resistant MFA at scale”—into tangible designs, automation, and quantifiable risk reduction.In this position, you will:Develop advanced identity and access controls

About the RoleJoin our dynamic team at FanDuel as we seek a skilled Senior Enterprise Security Engineer. This pivotal role requires a professional who is dedicated to crafting and implementing enterprise security control strategies, while also shaping our security posture. You will play a key role in balancing risk reduction with user experience and operational enablement at scale.Reporting directly to the Senior Manager of Enterprise Security Engineering, you will tackle diverse security challenges and lead initiatives that foster a secure environment for our operations.Your ResponsibilitiesImplement cutting-edge models such as “secure by default” and “zero trust” to maintain a robust security posture.Act as a security subject matter expert, collaborating with internal teams to meet business objectives and overcome security challenges.Develop and manage team roadmaps while staying informed of the latest threats and identifying security risks independently.Utilize automation and development approaches to enhance enterprise-wide security controls.Employ AI technologies to amplify the effectiveness of Security Engineering and FanDuel's operations.Support the security organization as needed, fostering a collaborative team environment.What We’re Looking ForProven expertise in security engineering across multiple domains, including Zero Trust, Endpoint Security, Data Protection, and more.Intermediate proficiency in scripting languages such as Python, Go, or Ruby; experience with Python and PowerShell is a plus.Familiarity with identity access management frameworks and protocols like SAML, SCIM, OAuth, and WebAuthN.Ability to model threats to corporate infrastructure and implement preventative architectures and controls.Strong communication skills to work effectively with a diverse range of partners, from engineering to legal teams.Adeptness in navigating rapidly evolving environments with a focus on solving ambiguous challenges.

About Our TeamAt OpenAI, our dedicated Security team is committed to providing our researchers, engineers, and staff with seamless access to the tools and resources necessary for optimal productivity, security, and comfort. As an Enterprise Security Engineer, you will thrive in a highly technical, collaborative environment focused on employee satisfaction.Our IT team, though compact and agile, covers a wide array of security domains, empowering you to contribute to innovative solutions and build robust systems from the ground up. With strong support and ample resources, we aim to implement a world-class enterprise security program.Role OverviewIn the role of Enterprise Security Engineer, you will play a key role in safeguarding OpenAI's internal information systems through the implementation and management of security protocols. You will collaborate closely with our IT and Security teams to enhance security capabilities, enforce policies, and monitor systems for potential threats.This position is available for remote work or relocation assistance can be provided for candidates moving to San Francisco.Your Responsibilities Will Include:Designing and executing robust security measures to protect our organization's information assets from unauthorized access, disclosure, or misuse.Monitoring both internal and external systems for security threats and responding promptly to alerts.Contributing to and enforcing IT and Security policies and procedures across the organization.Collaborating with the IT department to fortify our infrastructure using best practices in AzureAD, GSuite, GitHub, and other SaaS tools.Providing guidance to employees on best practices for securing endpoints, as well as office AV and network infrastructure.Creating innovative sharing controls and associated monitoring to safeguard company data, including intelligent group management, Data Loss Prevention (DLP), and other relevant security controls.Implementing forward-thinking models such as 'secure by default' and 'zero trust' to establish sustainably secure environments for knowledge workers and developers.Identifying and addressing vulnerabilities within our internal systems while adhering to best practices for data security.Utilizing our AI-driven models to enhance systems for improved security detection and response, data classification, and other security-related tasks.

About the Role Sigma Computing is seeking a Senior Security Engineer II focused on Cloud & Data Security to help safeguard our large-scale, cloud-native SaaS platform. This position centers on engineering: building security solutions, not just operating existing tools. The role calls for a subject matter expert in cloud security architecture. Collaboration with Engineering, Security, and Product teams is key, as is designing scalable controls that support business growth. Responsibilities include creating secure architectures, integrating controls into infrastructure-as-code, and setting up automated guardrails so teams can move quickly without waiting for manual security sign-offs. This is a hands-on position for someone who thrives in complex cloud environments, values automation, and knows how to scale security for a growing SaaS company. What You Will Do Architectural Leadership: Work closely with infrastructure and engineering teams to embed security into development workflows. Lead technical discussions that shape security strategy and initiatives. Multi-Cloud Engineering: Design, implement, and refine Sigma’s cloud security across AWS, GCP, and Azure, using deep architectural expertise. Threat Modeling & Incident Response: Conduct threat modeling for cloud environments and handle incident response, including investigation and remediation of malicious activity. Identity & Access Management: Develop strategies for IAM and privileged access (RBAC/ABAC, federation, least privilege, cross-account access). Remove standing privileges and long-lived credentials, and promote zero-trust and privileged access controls across IaaS and SaaS. Cloud Data Security Controls: Implement data classification, encryption/KMS, masking/tokenization, access governance, retention and deletion policies, and reduce exfiltration risks across APIs and data pipelines. Automated Remediation Workflows: Build automated responses for recurring cloud misconfigurations, drift, and policy violations to improve operational efficiency and response times. Security Stack Management: Deploy and manage cloud-native services, including CSPM, CNAPP, DSPM, SIEM, DLP, WAF, Kubernetes, and container security tools. Network Defense: Evaluate and implement zero-trust network security measures. Location: New York City, NY

Role Overview FanDuel is looking for an Enterprise Security Engineering Manager in New York City. This leader will direct efforts to strengthen security architecture and processes across the company's enterprise systems. The role centers on protecting sensitive data and supporting compliance with industry standards. What You Will Do Oversee the design and rollout of security measures for enterprise systems Lead and mentor a team of security engineers Work with teams across the company to identify and address security risks Ensure ongoing compliance with relevant industry requirements Who We're Looking For Experience managing security engineering teams Strong background in enterprise security architecture and process improvement Ability to collaborate with cross-functional groups Commitment to protecting sensitive information and upholding compliance This position is based in New York City.

JOIN OUR TEAMAre you ready to take your career in cybersecurity to the next level? At FanDuel, we're on the lookout for a skilled Enterprise Security Engineer who is passionate about designing and implementing cutting-edge enterprise security controls. You will play a pivotal role in shaping our security posture while balancing risk management and user experience. Reporting to the Senior Manager of Enterprise Security Engineering, you’ll tackle a variety of security challenges to protect our organization.

Location: New York, NY About EvolutionIQ EvolutionIQ builds technology for insurance claims teams, helping them process claims with more accuracy, fairness, and efficiency. The company’s mission centers on supporting people affected by injury or illness, so they can return to daily life with dignity and stability. EvolutionIQ is growing quickly and continues to attract top talent. The team has been recognized as one of Inc.'s Best Workplaces for three years running, and as a Built In Best Place to Work in both 2025 and 2026. Role Overview: Solutions Engineer (AI-Driven Enterprise SaaS) This Solutions Engineer role focuses on data onboarding, relationship management, and system maintenance for EvolutionIQ’s enterprise AI SaaS platform. The position works closely with Client Services to align priorities and partners with Product, Engineering, and Sales teams. The Solutions Engineer centralizes client data validation, collaborates with Engineering to build tools and processes for better data quality, and streamlines validation workflows. What You Will Do Lead client data onboarding and validation efforts within the Solutions Engineering team Work with Engineering to develop tools and processes that improve data quality and validation efficiency Collaborate with Product to enhance operational efficiency and reduce risks to project timelines Integrate diverse systems and bridge infrastructure gaps for smooth client implementations Act as the main technical point of contact for clients, troubleshooting issues and developing custom solutions Minimize the need for direct Product and Engineering involvement in client-facing technical matters

CLEAR builds secure identity technology for both digital and physical spaces. With more than 38 million members and a growing global partner network, CLEAR’s platform helps people move through airports, stadiums, workplaces, and daily routines with greater safety and ease. Role Overview The Senior Security Engineer on the Infrastructure Security Engineering (ISE) team protects CLEAR’s core platforms. This position focuses on cloud security, identity management, and endpoint controls. The work centers on AWS and Kubernetes environments, using infrastructure-as-code to scale and automate security practices. What You Will Do Strengthen security across AWS and Kubernetes infrastructure Develop and implement security controls using infrastructure-as-code Work closely with Engineering, CorpIT, and Security teams to make security a default part of CLEAR’s systems Location This role is based in New York, New York, United States.

Why Join UsAt Brex, we are transforming the way businesses manage their expenses through our innovative AI-powered spend platform. By integrating corporate cards, banking, and global payments with user-friendly software for travel and expenses, we empower companies—from startups to large enterprises like DoorDash, Flexport, and Compass—to control their spending proactively, reduce costs, and enhance efficiency on a global scale.Joining Brex means you will push boundaries, challenge conventional thinking, and collaborate with some of the brightest minds in the industry. We are dedicated to fostering a diverse team and inclusive culture, believing that your potential is only limited by your ambition. We provide you with the tools, resources, and support necessary to elevate your career.Engineering at BrexOur engineering approach at Brex focuses on building scalable systems with intention and speed. Our teams, which encompass Software, Data, Security, and IT, operate with a high degree of autonomy and foster deep collaboration. We take on complex technical challenges, take ownership of our results, and strive for excellence across all stages—from architecture to deployment. At Brex, engineering is a craft, and our builders evolve into leaders.Your RoleAs a Senior Security Operations Engineer at Brex, your mission will be to prevent, detect, and respond to security threats across our corporate and cloud environments. You will leverage existing systems and develop new tools to enhance our security capabilities. Our team is responsible for various functions in corporate security, detection & response, and infrastructure security domains, employing systems engineering and automation to support these functions.Security Operations is nested within our broader Trust & IT organization, providing opportunities to collaborate closely with Application Security, Corporate Engineering, Governance, Risk & Compliance (GRC), and IT. You will work to enhance security configurations, promote positive employee behaviors, and prevent incidents from escalating. Furthermore, you will contribute to our open-source project Substation and have the chance to share insights on the Brex Tech Blog. You will be part of a team that actively engages with the broader security community, committed to mentorship and engineering excellence.We seek individuals with a robust background and a keen interest in detecting, responding to, and resolving security incidents and challenges. You should be passionate about security and eager to contribute to a forward-thinking team.

At January, we are on a mission to revolutionize consumer finance from the ground up. By personalizing interactions and optimizing decision-making throughout all stages of consumer credit, we empower both consumers and creditors, ensuring that credit is fair, accessible, and tailored to individual needs.As a Lead Security Engineer, you will redefine security standards in an industry where trust has been significantly compromised. This is a unique opportunity to join us at a pivotal moment: we have established the hard-earned trust of leading financial institutions, and now you will create the security framework that extends this trust to millions of consumers.You will design and implement a dual trust architecture, safeguarding both consumer-facing experiences and robust enterprise systems. You will tackle technical challenges that are unparalleled in the industry, such as privacy-preserving data systems, compliance automation across multiple jurisdictions, and AI-driven decision-making processes. Your influence will shape our security strategy and culture from the ground up, demonstrating that security is not merely an overhead cost, but a competitive advantage that drives enterprise partnerships and market growth.Your ImpactTransform security into a competitive edge: Position January's security as a key differentiator that attracts banks and enterprises, unlocking Tier 1 partnerships and deals that competitors cannot secure.Promote security-by-design in product and application development: Collaborate with product and engineering teams to identify critical risks early in the process, focusing on application security across frontend, Flask services, and databases. Integrate security into the discovery and design phases, ensuring secure development patterns are embedded in workflows.Design systems for bank-grade data protection: Create and enforce data classification, encryption, and access control mechanisms that comply with regulatory standards, ensuring sensitive data remains within authorized boundaries.Foster a security-first engineering culture: Advocate for security-centric thinking within engineering teams without hindering progress. Lead incident responses decisively, ensuring that January emerges stronger from security events through thorough post-incident analyses.Streamline compliance with minimal overhead: Maintain SOC 2, PCI-DSS, and financial compliance using automated systems and build infrastructure that generates audit evidence seamlessly, eliminating compliance bottlenecks.

GovSignals creates AI-powered SaaS products that help private-sector companies secure government contracts more efficiently. The platform serves a wide range of contractors, from small firms to large enterprises, and concentrates on simplifying proposal processes and ensuring compliance. Located in New York, GovSignals works with U.S. government data to support both national security and economic progress through technology. Role overview The Enterprise Sales Executive leads efforts to win new business and close significant SaaS contracts. This position calls for a consultative approach, guiding six-figure deals from initial discovery through to final agreement with a structured and timely process. Key responsibilities Develop and maintain a healthy pipeline of sales opportunities Conduct discovery calls and deliver tailored product demonstrations Create compelling business cases that address specific client needs Negotiate contract details and secure finalized agreements What success looks like Secure new business consistently within a startup environment Work independently while upholding strong execution standards Partner with colleagues across teams to advance client objectives This role is based in New York, New York.

About UsAt Justworks, we foster a friendly and inclusive environment where exceptional benefits, wellness programs, company retreats, and opportunities to connect with industry leaders abound. Our commitment to our greatest asset—our people—is paramount.We empower businesses to thrive by handling their HR challenges, allowing them to concentrate on what they do best. Our data-driven approach fuels our continuous improvement. If you seek a supportive and entrepreneurial atmosphere where you can contribute to meaningful projects while enjoying your work, we want to hear from you!At Justworks, we are united by common goals and values, which are reflected in our products and our team dynamics.Discover Our ValuesIf this resonates with you, you will thrive here.Your RoleJustworks is in search of a skilled and proactive Senior Security Engineer to enhance our Security Architecture & Engineering initiatives. We need a versatile professional with expertise in various security domains, including but not limited to cloud security, application security, identity and access management (IAM), and data protection. This role will involve close collaboration with our Security Operations and Governance, Risk, and Compliance (GRC) teams.The ideal candidate will have a strong track record of developing security solutions that bolster organizational security and managing our overall security posture. As this is a hands-on technical position, proficiency in coding languages such as Ruby on Rails, Go, or JavaScript is essential. Experience in a Linux environment and familiarity with common cybersecurity tools are also preferred.

About UsAt Justworks, we foster a friendly and inclusive workplace culture where our employees are valued and supported. We offer comprehensive benefits, wellness programs, team retreats, and opportunities to connect with industry leaders in the startup ecosystem. Our commitment is to empower businesses by allowing them to focus on their core operations while we tackle their HR challenges. We are driven by data and constant innovation. If you are eager to contribute to a dynamic, entrepreneurial environment and are passionate about creating meaningful solutions while enjoying the journey, we invite you to join us.Our team is united by shared objectives and motivations, which are reflected in our core values as a company.Discover Our ValuesIf this resonates with you, we would love to have you on board.Your RoleWe are seeking a dedicated and experienced Senior Security Engineer with a specialization in AI to spearhead the execution of our AI strategy and advance the objectives of our Digital Security team. The ideal candidate will possess extensive expertise in developing and enhancing security protocols for AI systems, effectively defending against unique AI-related threats. You should have a strong background in assessing the security of software systems featuring AI capabilities, and designing protective measures to safeguard our data from AI-specific vulnerabilities. A foundational understanding of programming and development, particularly with languages such as Ruby on Rails and JavaScript, is essential. Experience in a Unix-like environment and proficiency with standard cybersecurity tools are also preferred.

Join our dynamic team and take your career to the next level by being part of a forward-thinking organization that values innovation and growth.We are seeking a highly motivated and experienced Senior Account Executive to drive enterprise sales from our New York office. As a key player in our sales team, you will work collaboratively with the Business Development Representatives (BDRs) and lead the sales process from initial discovery through to closing deals. You will engage with enterprise clients, helping to expand Example Corp's presence in the EMEA region.

K Health Careers seeks a Senior Application Security Engineer based in New York, NY. The focus of this role is to strengthen application security and protect user data and privacy across the organization. Key responsibilities Identify and analyze software vulnerabilities, then recommend practical solutions. Collaborate with developers and cross-functional teams to integrate security into every phase of the software development lifecycle. Conduct thorough security assessments and review both application code and system architecture. Advise teams on secure coding practices and support their adoption throughout the company. Lead projects focused on enhancing application security protocols and maintaining high standards. Collaboration and impact This position works closely with engineering and other stakeholders to embed security thinking into daily development. Sharing expertise, guiding teams, and shaping a strong security culture are central to the role.

Fivetran helps organizations move data into their warehouses, ready for analysis without extra engineering or ongoing maintenance. The company’s technology aims to make data access as dependable as electricity, supporting customers as they become more data-driven. Role Overview Fivetran is looking for a Senior Sales Engineer to join the Enterprise Existing Business sales team. This is a remote, full-time role, with a preference for candidates based in Central or Eastern time zones in the United States. The Senior Sales Engineer partners with sales colleagues to understand complex business needs for Enterprise clients. The role focuses on showing how Fivetran’s data replication solutions help customers reach their goals. Responsibilities include technical guidance, identifying technical requirements, and leading a structured proof-of-value process during the sales cycle. Technologies in Use The team works with: AWS GCP Azure Snowflake BigQuery Databricks Kafka Grafana Linux Windows Python What You Will Do Meet with Enterprise customers to understand their business needs, use cases, and data replication requirements. Work closely with Account Executives, Professional Services, BDRs, Marketing, and Support to develop and maintain a thorough account management approach. Build and deliver technical demonstrations for Enterprise audiences. Drive technical success by running a detailed proof-of-value process. Support the sales team in closing deals by providing technical expertise and assistance.

Role overview The Senior Account Manager - Enterprise at Braze, Inc. is based in New York City and focuses on managing a portfolio of significant enterprise clients. This position centers on building and maintaining strong relationships with senior stakeholders, including C-level executives. Working closely with internal teams, the Senior Account Manager supports client objectives and aims to ensure their long-term satisfaction with the Braze platform. What you will do Manage a group of key enterprise accounts, serving as the main point of contact Develop and sustain trusted partnerships with C-level client contacts Work alongside cross-functional teams to address client requirements Promote client retention and help clients get the most value from the Braze platform Use account management skills and strategic insight to support clients in achieving their business goals

The Security Incident Response Team (SIRT) is integral to safeguarding Datadog from cybersecurity threats. In this pivotal role, you will collaborate with diverse teams to identify, triage, and swiftly respond to an array of security threats, ensuring that incidents are contained promptly. Your contributions will also extend to enhancing our tools and systems, fostering cross-functional learning from incidents to bolster our overall security posture.At Datadog, we value a vibrant office culture that nurtures relationships, collaboration, and creativity. We support a hybrid workplace model, allowing our team members to achieve a harmonious work-life balance.

Who We AreAddepar is a leading global data and AI platform that empowers investment professionals to transform complex financial data into actionable insights. Our platform integrates portfolio, market, and client data into a unified view, delivering AI-powered insights that enhance investment and client workflows. Over 1,400 firms across nearly 60 countries trust Addepar to manage and advise on approximately $9 trillion in assets. Our open platform collaborates with nearly 650 partners in software, data, and consulting to streamline investment operations for organizations of all sizes. Addepar proudly serves clients worldwide with offices in New York City, Salt Lake City, London, Edinburgh, Pune, Dubai, Geneva, and São Paulo.The RoleWe are looking for a Senior Enterprise Growth Engineer to join our dynamic team. As a key strategic partner throughout the sales process, you will engage with C-suite executives and global stakeholders, architecting solutions that demonstrate how Addepar’s vertically integrated platform can revolutionize outdated operations into modern, AI-driven ecosystems. Your expertise in financial software will enable our prospects and major clients to see Addepar as an essential element of their long-term business strategies.In collaboration with our Account Executives, you will lead the technical aspects of the sales cycle, emphasizing AI-driven workflows and seamless data integration. You will also interact with various internal teams to keep our prospects informed about product development, workflows, and use cases at Addepar. As an inspirational leader, you will be a reliable resource for internal teams and a trusted advisor for our prospects!At Addepar, we believe in a market-responsive compensation structure. The starting salary for a successful candidate will be influenced by the role, relevant skills, experience, qualifications, location, and market conditions. The current salary range for this role is $146,000 - $182,000, plus bonuses, equity, and benefits.Your recruiter will discuss the specific salary range based on your preferred location during the hiring process. Please note that these salary ranges reflect the base pay only, excluding bonuses, equity, or benefits.