Senior Security Engineer

We are seeking a Senior Security Engineer to join our team at OpenTable. This role will initially be remote, with plans to transition to a hybrid model, requiring in-office attendance twice a week in downtown Toronto.As a leader in the restaurant technology industry, OpenTable, a part of Booking Holdings, Inc. (NASDAQ: BKNG), connects millions of diners with over 60,000 restaurant partners. With more than 25 years of experience, our technology enables restaurants to thrive by focusing on their team, guests, and profitability while providing diners with a seamless booking experience.At OpenTable, every team member significantly influences our operations and culture. Join us and be part of a global team dedicated to excellence in hospitality and technology.

Shape the Future of Finance with Us!Our mission is to democratize finance for everyone. An estimated $124 trillion of assets will be passed down to younger generations in the coming decades, marking the largest wealth transfer in history. If you’re eager to be part of this monumental cultural and financial transformation, we want to hear from you.About Our Team and the RoleWe are assembling a top-tier team to tackle the world’s most significant financial challenges using cutting-edge technologies. We seek innovative thinkers, adept problem-solvers, and builders ready to make a substantial impact. At Robinhood, we foster an environment of high performance and ethical standards, where ambitious individuals can excel in their careers. Expectations are high, and the rewards are significant.Within Robinhood, we perceive security as a design and engineering challenge rather than a mere administrative task. We are in search of a lead architect for our next-gen automated defense systems. As a Senior Vulnerability Management Engineer, you will evolve our program into a self-scaling security platform that surpasses the conventional 'scan-and-patch' approach. You will spearhead the transition to an Intelligence-Driven Defense model, harnessing Agentic AI and Machine Learning to automate risk discovery, prioritization, and remediation at scale, ultimately streamlining security for our developers.This position is based in our office in Toronto, as outlined in this job posting. For more details about our in-office philosophy and expectations, please connect with your recruiter.

About Us:At Cohere, our mission is to enhance intelligence for the betterment of humanity. We specialize in training and deploying cutting-edge models for developers and enterprises, empowering them to create remarkable AI-driven experiences such as content generation, semantic search, retrieval-augmented generation (RAG), and intelligent agents. We believe our efforts are pivotal in advancing the widespread integration of AI.We take immense pride in our creations, and each team member plays a crucial role in enhancing our models and delivering exceptional value to our clients. Our culture is rooted in hard work and agility, always prioritizing the needs of our customers.Cohere brings together a diverse team of researchers, engineers, designers, and more, all deeply passionate about their respective fields. We recognize that a variety of perspectives is key to developing outstanding products.Join our mission to shape the future of AI!Why This Position Matters:Are you driven by a passion for secure software development? Do you aspire to be at the forefront of AI innovation while ensuring enterprise security? Join Cohere's North team as a Senior Software Engineer focused on security, and make a meaningful impact.Your Responsibilities:In this pivotal role, you will be instrumental in constructing and securing the architecture of North, our AI workspace platform. Your key responsibilities will include:Designing and deploying security features for North, our AI workspace platform.Creating autonomous agents capable of interacting securely with sensitive enterprise data.Developing minimal code that operates in low-resource environments, adhering to rigorous deployment standards.Integrating new tools to enhance the security features of North.Reinventing solutions as needed to meet stringent security and privacy requirements, sometimes necessitating the development of custom solutions.Conducting application security testing to ensure your code withstands real-world threats.Ideal Candidate Profile:5+ years of experience in software engineering with a solid emphasis on developing user-facing security features.Proficient in Python with a proven track record of deploying production-level code.Strong analytical skills and a problem-solving mindset, capable of tackling complex challenges within security frameworks.Familiarity with security testing methodologies and tools.

Join our innovative team as a Senior Sales Engineer specializing in Data & AI Security. In this dynamic role, you will leverage your technical expertise and sales acumen to provide cutting-edge solutions to our clients. You will work closely with our sales team to drive growth and enhance customer satisfaction by demonstrating the value of our advanced data protection and AI-driven security technologies.As a key player in our organization, you will engage with clients to understand their needs, deliver tailored presentations, and provide hands-on support during the implementation of our solutions. Your ability to communicate complex technical concepts to non-technical stakeholders will be crucial in helping our clients realize the full potential of our offerings.

Protecting Every Identity, from AI to HumanAt Okta, we believe that identity is the cornerstone for harnessing the potential of AI technology. We are dedicated to securing AI by creating a reliable, neutral infrastructure that empowers organizations to confidently navigate this exciting new landscape. This mission demands a relentless commitment to tackling intricate challenges with significant real-world implications. We are searching for innovators and leaders who thrive in a fast-paced environment and deliver results with precision.As a Senior Security Infrastructure Engineer on our Red Team, you will play a pivotal role within the Product Security team, providing critical security assurance for Okta's products, services, and infrastructure. You will be the first dedicated infrastructure and tooling engineer for a small team of operators, working collaboratively alongside them as a peer in a distinct discipline.In this role, you will take ownership of the engineering backbone that supports our operations, focusing on infrastructure, tooling, and automation within the Red Team. Your responsibilities will include designing, building, maintaining, and continuously enhancing the platforms and tools that our operators rely on for executing their engagements.Your contributions will directly enable the team to operate at a higher maturity level, characterized by rapid infrastructure deployment, resilient OPSEC-aware architectures, automated workflows, and dependable custom tools, allowing operators to concentrate on their core mission. Furthermore, you will foster collaboration with stakeholders and elevate the company's security posture through strategic initiatives and proactive measures. As the team grows, this role has the potential to evolve into platform leadership or a hybrid operator/engineer pathway.

About the Role MongoDB is looking for a Senior Software Engineer to join the Server Security team in Toronto. This group sits at the heart of MongoDB’s engineering organization, building security features that help users protect their data worldwide. The work spans core elements of the MongoDB database, with a focus on security, reliability, and performance. What You Will Work On Cryptography: Develop and maintain cryptographic features such as Queryable Encryption, at-rest encryption, and other foundational crypto components. Identity & Access: Design and improve authentication and authorization systems, manage TLS, and handle X.509 certificate processes. Network Security: Build high-performance networking protocols using PKI, hashing, and certificate revocation lists (CRLs). System Integrity: Strengthen resilience, observability, and compliance across MongoDB’s distributed database infrastructure. Team Culture The Server Security team values inclusivity, diversity, and close collaboration. Engineers here apply distributed systems concepts to advance the security of a widely used database platform. The work supports application developers, system architects, and database administrators around the globe.

Join us in revolutionizing the financial landscape.Our goal is to make finance accessible to everyone. An estimated $124 trillion in assets will be passed down to younger generations over the next two decades, marking the largest wealth transfer in history. If you're eager to be at the forefront of this monumental cultural and financial evolution, we invite you to explore this opportunity further.About the Team and RoleWe are assembling a premier team dedicated to leveraging cutting-edge technology to tackle the most pressing issues in finance. We seek innovative thinkers, adept problem-solvers, and proactive builders who are motivated to make a meaningful impact. At Robinhood, complacency is not an option; it’s a place where driven individuals can produce their finest work. Our team operates with high standards and an unwavering commitment to ethics.The mission of our Red Team is to proactively identify and emulate real-world cybersecurity threats against Robinhood’s platforms and personnel. Through red teaming and adversarial simulations, we assess security measures, uncover vulnerabilities, and work closely with Detection & Response, Physical Security, and Engineering to enhance our overall security posture.As a Senior Offensive Security Engineer, you will play a vital role in designing and executing covert adversarial simulations to validate our security assumptions and expose gaps in our detection and response capabilities. You will utilize threat modeling, penetration testing, and research-driven techniques to mimic sophisticated attacks while collaborating across teams to enhance our defenses and develop more secure systems.This position is based in our Toronto, Canada office, with in-person attendance required at least three days a week.At Robinhood, we champion the benefits of in-person collaboration to accelerate innovation and foster community. Our office environment is purposefully designed to energize and support high-performing teams.

As a Senior Security Operations Engineer at Cohere, you will play a pivotal role in safeguarding our digital infrastructure. You will be responsible for identifying vulnerabilities, responding to incidents, and implementing security measures to protect our assets. Your expertise will contribute to enhancing our overall security posture and ensuring compliance with industry standards.

Join Us in Strengthening Global Connections!At Kong, we value diverse applicants who may not fit every criterion but are eager to contribute. If you're passionate about cybersecurity and your skills align with our needs, we encourage you to apply!Position Overview:We are in search of a proactive and skilled Senior Technical Program Manager (TPM) to bolster our Cybersecurity team within the Office of the Chief Information Security Officer (OCISO) at Kong. This role will encompass a wide array of cybersecurity initiatives, including risk management, compliance automation, security operations, and technical delivery.The successful candidate will possess extensive experience in an Information Security or Cybersecurity role, showcasing a robust comprehension of security frameworks, risk management, and technical program execution. Relevant certifications such as CISSP or CISM are highly regarded.Key Responsibilities:Lead and oversee Kong's Cybersecurity Programs within the OCISO.Establish, develop, and monitor key performance indicators (KPIs).Collaborate with engineering, product, and business teams to define, prioritize, and deliver effective technical solutions.Communicate complex technical challenges and resolutions to leadership and stakeholders effectively.Remain informed on regulatory and industry standards (such as ISO 27001, PCI-DSS, FedRAMP, NIST 800-53) to guide risk and control strategies.Develop strategies for issue and risk mitigation, contingency planning, and compliance adherence.Exhibit ownership and independence in managing programs and delivering high-quality results.Qualifications:Proven experience in an Information Security or Cybersecurity team.Strong program and project management skills with comprehensive knowledge of security and audit frameworks (e.g., SOC 2, PCI, ISO, FedRAMP).Ability to effectively connect Product, Engineering, and Architecture teams to facilitate solutions.Exceptional communication, stakeholder engagement, and organizational capabilities.

About FaireFaire is a dynamic online wholesale marketplace driven by the belief that the future lies in local commerce. Independent retailers worldwide are achieving greater revenue than giants like Walmart and Amazon combined, yet remain relatively small in stature. At Faire, we harness the power of technology, data, and machine learning to connect this vibrant community of entrepreneurs around the globe. Imagine your favorite local boutique—we empower them to discover the finest products globally to stock their shelves. With the right tools and insights, we aim to level the playing field, enabling small businesses everywhere to compete against large box stores and e-commerce behemoths.By championing the growth of independent enterprises, Faire fosters positive economic impacts within local communities on a global scale. We are on the lookout for intelligent, resourceful, and passionate individuals to join us as we drive the shop-local movement. If you believe in the power of community, we invite you to be a part of ours.Role Description:Our Engineering organization is the backbone of our marketplace, responsible for the software that enables it to function seamlessly. The Product Security team empowers product engineering teams to create and deploy secure software solutions. We prioritize best engineering practices, striving to deliver software that is secure, thoroughly tested, easy to maintain, and capable of scaling to millions of users. We develop scalable, reusable frameworks, consult with product teams, leverage data-driven insights, and continually iterate on our practices.As a Senior Staff Software Engineer in Product Security, you will take on the role of technical lead for the Product Security domain. You will establish the long-term technical vision for integrating security within Faire’s application framework. Collaborating closely with Platform and Product Engineering teams, you will identify and mitigate security vulnerabilities, spearhead significant security initiatives, and mentor engineers across the organization to enhance secure engineering practices.Additionally, you will lead cross-functional programs to embed security deeply within our architecture, pipelines, and developer experience, effectively minimizing risk while maintaining development velocity.In this role, you will:Define the long-term technical strategy for application security at Faire, establishing scalable and developer-friendly frameworks and principles that facilitate secure development across all product areas.

Who are we?At Cohere, our mission is to harness the power of intelligence for the benefit of humanity. We specialize in training and deploying cutting-edge models for developers and enterprises, enabling them to create innovative AI systems that deliver extraordinary experiences in content generation, semantic search, retrieval-augmented generation (RAG), and intelligent agents. Our endeavors are pivotal in accelerating the global adoption of AI technologies.We are dedicated to excellence in our craft. Each team member plays an essential role in enhancing the capabilities of our models and the value they provide to our clients. Our culture is built on hard work, rapid iteration, and a relentless focus on what is best for our customers.Cohere is comprised of a diverse team of researchers, engineers, designers, and more—each a leader in their field. We believe that diverse perspectives are crucial for creating exceptional products.Join us in our quest to shape the future of AI!About the RoleAre you passionate about secure software engineering? Do you aspire to be at the forefront of AI innovation and security? Our North team at Cohere is on the lookout for a Senior Software Engineer focusing on security to join us in our mission and make a substantial impact. This is not merely an advisory position; you will take ownership of and deliver production-level security features that our clients rely upon daily.Your Role:As a Senior Software Engineer with a specialization in security, your contributions will be vital in architecting and securing North's infrastructure. Your responsibilities will encompass:Software Development: Actively participate in the core development of security features like OIDC/OAuth flows and session management, ensuring the security of North's AI agents.Secure Coding: Write robust code to manage OIDC tokens, user claims, and sensitive information, following best practices for JWT validation and encryption.Authentication and Data Protection: Implement authentication protocols, including user login, token management, and authorization checks to safeguard data integrity.Tool Integration: Integrate new security tools to enhance North's capabilities.DevSecOps: Design and execute secret management in Kubernetes clusters, focusing on encryption and role-based access control (RBAC).Cross-functional Collaboration: Utilize strong communication skills to convey security best practices to stakeholders clearly and effectively.You may be a great fit if:You have 5+ years of experience in building secure software applications.You possess a deep understanding of security protocols and practices.You are proficient in coding languages and frameworks relevant to security development.You have a track record of successful collaboration in cross-functional teams.

7shifts is looking for a Senior Cloud Security Engineer based in Toronto, ON. The main focus of this role is to enhance the security of cloud environments and safeguard sensitive company data. Role overview This position involves working closely with various teams throughout the organization. The Senior Cloud Security Engineer will help design and implement security measures that align with compliance requirements and protect core infrastructure from cyber threats. Key responsibilities Strengthen the security of cloud platforms and services Protect sensitive data within the organization’s cloud environments Collaborate with internal teams to develop and apply security controls Support compliance initiatives and defend against cyber risks

Join Movable Ink as a Product Security Engineer and play a pivotal role in safeguarding our codebases, CI/CD pipelines, and overall development practices. In this hands-on position, you'll adopt a security-first mindset while collaborating with engineering teams to streamline software delivery while minimizing risk. Your expertise will be crucial in enhancing automation processes that protect our code and infrastructure, especially in the face of rising threats from AI coding tools and supply chain attacks. This role is vital for proactively identifying and mitigating vulnerabilities before they are deployed to production.

Join Homebase as a Staff Security Engineer specializing in Application Security in a hybrid work environment. In this pivotal role, you will be responsible for enhancing our security posture while ensuring that our applications remain safe and secure. You will collaborate with cross-functional teams to identify vulnerabilities, implement security controls, and promote best practices in application development.We seek a proactive individual who is passionate about cybersecurity and eager to contribute to building robust security solutions. You will play a key role in shaping the security framework of our applications.

The Security Product Management team plays a crucial role in maintaining customer trust by ensuring that data security becomes a key market differentiator. This enables MongoDB to thrive in enterprise and regulated sectors. Our team's responsibilities are extensive, encompassing various features such as Networking, Identity and Access Management (IAM), Data Governance, Encryption, Compliance, and Auditing.This position can be performed from our Toronto office or remotely within Canada.

Join Marqeta as an Identity Security Engineering Intern and immerse yourself in the world of Identity and Access Management (IAM) within dynamic cloud-native environments. In this role, you will actively support the team in executing innovative identity strategies that ensure secure access across all Marqeta systems and services, entirely hosted in the cloud with zero data-center footprint. Embrace our Flexible First approach: this position can be performed remotely from anywhere within Ontario or British Columbia, Canada. We are excited to welcome you on board! This internship will span 12 weeks, starting on June 1st and concluding on August 21st, 2026. Please note that this internship is not for an existing vacancy.

WHO WE AREFounded in New York City, Take-Two Interactive Software, Inc. stands as a premier developer, publisher, and marketer of interactive entertainment, captivating consumers worldwide. Our diverse portfolio includes renowned brands such as Rockstar Games, 2K, and Zynga, delivering outstanding products across console gaming systems, PCs, and mobile devices, accessible through various channels including physical retail, digital downloads, online platforms, and cloud streaming services. As a publicly traded company on NASDAQ under the symbol TTWO, we pride ourselves on our dynamic workplace that fosters creativity, innovation, and efficiency while offering ample opportunities for individual and team growth.Our work environment—whether in-office or remote—embraces a casual and welcoming atmosphere. We believe in balancing hard work with enjoyment, making it a rewarding place to pursue your passions daily.

Discover OktaAt Okta, we are recognized as the world leader in identity management. Our mission is to empower individuals to securely access any application or service across any platform and device. With our innovative solutions, including the Okta Platform and Auth0 Platform, we put identity at the forefront of business security and operational growth.We value diverse perspectives and experiences, fostering an inclusive environment. We are not just looking for candidates who meet every qualification; we seek lifelong learners who can enrich our team with their unique insights.Become a part of our mission! We’re creating a future where identity is truly in your hands.As a Staff Engineer in Okta’s Defensive Cyber Engineering team, you will play a crucial role in securing Okta’s infrastructure. Collaborating closely with Security, Business Technology Engineering, and Product teams, you will design, implement, and manage security solutions that safeguard our workforce, endpoints, and corporate assets.To thrive in this role, you must possess a strong commitment to integrating tools and people to tackle complex security challenges. This requires an engineering-driven mindset, emphasizing the optimization of existing security tools while strategically developing or acquiring new solutions to address any outstanding security vulnerabilities.Your enterprise security expertise, combined with practical engineering skills, will enable you to leverage automation, policy-as-code, and cloud-native technologies to create robust, scalable, and secure solutions. Your contributions will set the standard for security best practices across the organization and will significantly influence the architecture of critical business systems.

WHO WE ARE Take-Two Interactive Software, Inc., headquartered in the vibrant city of New York, is a premier developer, publisher, and marketer of interactive entertainment, captivating audiences worldwide. With iconic brands such as Rockstar Games, 2K, and Zynga under our umbrella, we are driven by a passion for creating unforgettable entertainment experiences. Our commitment to creativity, innovation, and efficiency is at the core of our operations, enabling us to deliver high-quality products across various platforms. For more details about our company and offerings, visit http://www.take2games.com. Our workplace, whether physical or virtual, fosters a casual yet inspiring environment. We are dedicated to individual and team development, providing opportunities for continuous learning in a fast-paced and evolving industry. While we work diligently, we also value enjoyment and believe in creating a workplace where you can pursue your passions every day. THE CHALLENGE We are seeking a dynamic Lead Security Operations Engineer to spearhead the design, implementation, and management of our Security Orchestration, Automation, and Response (SOAR) platform. As the technical leader in this role, you will enhance our security automation capabilities, leveraging an array of technologies including security tools, APIs, and cloud services to optimize our security operations and elevate our incident response effectiveness. Your expertise will play a critical role in protecting Take-Two and its affiliated systems, networks, and data. In this position, you will collaborate closely with Take-Two's Information Security teams, reporting directly to the Director of Security Operations Engineering. WHAT YOU’LL TAKE ON SOAR Platform Management: Lead the design, development, and maintenance of SOAR playbooks, workflows, and integrations with various security tools. Automation and Optimization: Identify and implement automation improvements to enhance the speed and precision of our security operations and incident responses. Technical Leadership: Serve as a domain expert for SOAR, providing technical guidance, mentorship, and support to the security team. Collaboration and Strategy: Partner with other security teams to develop strategies that enhance our overall security posture.