Senior Full-Stack Engineer at Coast | New York, NY

Join Coast as a Security Engineer, where you'll play a critical role in safeguarding our digital infrastructure and data integrity. You will collaborate with our engineering teams to design and implement security measures, assess risks, and respond to security incidents. Your expertise will help us ensure that our systems are robust and secure against emerging threats.

Join Coast as a Platform Engineer specializing in Security, where you will play a pivotal role in enhancing our security infrastructure. You will collaborate with cross-functional teams to design, implement, and maintain robust security protocols that protect our platforms and data. This position offers the opportunity to work in a dynamic environment, contributing to innovative solutions that drive our business forward.

At Coast, we are revolutionizing the U.S. B2B card payments infrastructure, targeting the vast landscape of 500,000 commercial fleets and over 40 million commercial vehicles. Our mission is to modernize the outdated technologies that serve these customers to meet the growing demand for innovative digital experiences and affordable financial services. With the backing of leading fintech and mobility venture funds, we are poised to transform one of the largest sectors in the country. This is an exciting opportunity to join a dynamic and rapidly growing engineering team at Coast. As a DevSecOps Engineer, you will play a pivotal role in shaping our security practices and ensuring the integrity of our platforms. You will have the chance to contribute significantly to foundational decisions and expand your impact as we scale. In this role, you will collaborate with a passionate product team, addressing key security concerns from network security to code scanning and application security reviews. Your expertise will help us create streamlined processes that reduce friction while maintaining high standards of security. This position reports to the Head of Platform and works closely with Product Engineering and the CTO. Our New York City office is located in the vibrant SoHo neighborhood, offering a creative work environment. Team members are typically in the office four days a week.

Coast is revolutionizing the U.S. B2B card payments and expense management landscape, specifically targeting the nation's 500,000 commercial fleets and 40 million commercial vehicles. Our innovative platform empowers vehicle fleets with enhanced control, security, and real-time visibility into their expenditures. We initiated our journey by creating a fair and transparent charge card tailored for mobile fleet workers, owners, and managers. Our long-term ambition is to develop a comprehensive and intelligent financial services platform uniquely designed for this sector. Design remains at the forefront of our mission to simplify complex financial workflows, making them intuitive and trustworthy for users in both field and office environments.Founded and guided by Daniel Simon, a co-founder of Bread (breadpayments.com), a prominent payments and credit technology firm that was acquired for over $500 million in 2020, Coast has successfully raised a total of $165 million in funding. Our latest funding event, a $40 million Series B equity round led by ICONIQ Growth, included participation from Thomvest and Synchrony, alongside renowned fintech and mobility venture funds such as Accel, Insight Partners, and Better Tomorrow Ventures, among others.

Coast is revolutionizing the U.S. B2B card payment ecosystem, specifically targeting the vast landscape of 500,000 commercial fleets and 40 million commercial vehicles, alongside countless commercial drivers. The outdated technologies currently serving these customers are no longer sufficient, as fleet businesses increasingly seek modern digital experiences and transparent financial service solutions. Our mission at Coast is to deliver innovative solutions at an unprecedented scale, beginning with the Coast Fuel Card and an advanced spend management platform. What does Product Marketing entail at Coast? Our dynamic marketing team of 12 operates through a lens of strategic experimentation: we rapidly test, learn swiftly, and amplify successful strategies across various channels. We prioritize impactful positioning, clear messaging, and aspire to build a generational brand that resonates deeply with finance and operations leaders. Product Marketing at Coast serves as the bridge connecting our customers, our products, and our growth strategies. We work closely with Product, Sales, Customer Success, and the broader Marketing team to effectively position and launch products, while driving adoption, expansion, and customer retention throughout the entire lifecycle. About the Position We are in search of a Senior Product Marketing Manager to spearhead marketing efforts for all new offerings at Coast. This role begins with our spend management solution, designed specifically for fleet businesses. Your mission will be to elevate this product from a key driver of Coast's growth to a dominant player in our business portfolio. Following this product launch, numerous additional offerings will be introduced this year, demanding your strategic leadership. This role is ideal for a full-stack Product Marketing Manager eager to build from the foundation up. You will become the subject matter expert in understanding our customers, the market landscape, and the intricacies of our product. You will define our messaging around spend management, develop packaging and sales strategies, and foster adoption and expansion throughout our customer base. You will have significant ownership in an environment where you will continuously develop the playbook as we progress. Key Responsibilities Craft positioning and messaging that clearly articulates Coast's competitive advantages, and disseminate this across all communication channels, including our website, product communications, sales materials, integrated marketing campaigns, and customer lifecycle communications. Lead cross-functional product launches from inception to execution, collaborating closely with Product and Sales to shape the roadmap, develop the narrative, and ensure internal alignment for our overarching go-to-market strategy. Design cross-sell and lifecycle journeys for your products (onboarding, activation, engagement, expansion), leveraging customer insights, product metrics, and performance data to enhance adoption and drive growth.

At Coast, we are revolutionizing the U.S. B2B card payments landscape, targeting the vast network of 500,000 commercial fleets, 40 million commercial vehicles, and countless drivers across the nation. As traditional technologies fall short of modern demands, we are committed to providing innovative digital experiences and transparent financial services. Our mission is to empower our clients with the Coast Fleet and Fuel Card, a state-of-the-art spend management platform designed for transformative growth. About the Role We are seeking a dynamic and empathetic Manager of Customer Success to spearhead our frontline Customer Success Managers (CSMs) while also managing a dedicated portfolio of accounts. This player-coach approach is essential to fostering trust, empathy, and excellence throughout the customer journey. You will be responsible for mentoring, hiring, and developing a team that ensures outstanding onboarding, activation, and retention for all customer segments. What Success Looks Like Consistently deliver exceptional customer value throughout the customer lifecycle. Achieve excellent Gross Revenue Retention (GRR) and Net Revenue Retention (NRR) through proactive health monitoring and effective retention and expansion strategies. Accelerate the onboarding process and fleet activation to ensure customers realize value quickly and consistently. Be an engaged player-coach, managing accounts and demonstrating product knowledge and customer service fluency to elevate team performance through structured coaching. Enhance the expansion pipeline by identifying and nurturing Customer Success Qualified Opportunities (CSQOs) into viable expansion avenues. What You’ll Do Lead & Coach: Oversee and mentor a team of high-performing CSMs, prioritizing call coaching, onboarding execution, fleet activation, and account health. Own Accounts: Maintain a personal portfolio to remain close to the customer experience and exemplify best practices in onboarding, retention, and account expansion. Drive Activation: Ensure your team expedites onboarding processes and enhances customer engagement. Create Value: Guide CSMs in demonstrating customer value throughout the lifecycle, developing account-specific strategies linked to clear use cases. Maximize Expansion: Assist CSMs in generating CSQOs and establishing a proactive expansion pipeline. Upskill the Team: Implement a systematic 1:1 coaching and enablement framework to elevate onboarding, account health, and overall team performance. Build Systems Excellence: Promote operational rigor and data proficiency across Salesforce, Sigma, Outreach, and other tools.

Join Coast as we revolutionize the trillion-dollar B2B card payments landscape in the U.S. Our focus is on enhancing the experience for the nation's 500,000 commercial fleets, 40 million commercial vehicles, and millions of drivers. With outdated technologies failing to meet the demands for modern digital solutions, Coast is on a mission to deliver transformative financial services that improve the working lives of those in one of the country's largest industries. Supported by leading fintech and mobility venture funds, we are positioned to make a significant impact.As an early member of our sales team, you'll dive into the essential role of promoting Coast's innovative products. Your mission will be to help businesses with fleet operations save time and money by forging, nurturing, and closing relationships with prospective clients. You will also play a key role in shaping the sales strategy and vision for our customer-centric sales organization. Your efforts will directly contribute to Coast's revenue growth and pave the way for the success of future sales team members.

At Momenti, we are pioneering a new era of content creation, transforming traditional media into immersive experiences that resonate deeply with audiences. Our focus is on interactive video that dismantles the 4th wall, fostering profound connections and emotions. Join us in redefining audience engagement and bringing moments to life in an innovative way.Job Overview:We are looking for a skilled and dedicated Security Engineer to become our inaugural security hire at Momenti, reporting directly to our Engineering Director. In this influential role, you will be charged with safeguarding the security and integrity of our systems, applications, and data. You will collaborate closely with cross-functional teams to identify vulnerabilities, formulate and implement security protocols, and provide continuous support to ensure a secure environment. This role offers a unique opportunity to make a lasting impact and help shape the security framework at Momenti.Key Responsibilities:• Design and implement robust security strategies, policies, and procedures to protect Momenti's technological assets.• Conduct ongoing security evaluations, vulnerability assessments, and risk analyses to uncover and mitigate potential security threats.• Work alongside software engineers and other team members to establish secure coding standards and practices to ensure secure software development.• Actively monitor and respond to security incidents, investigating and resolving breaches, intrusions, and unauthorized access attempts.• Keep abreast of the latest developments in security technologies, trends, and best practices, and provide actionable recommendations to enhance our security posture.• Conduct training sessions for employees to foster a culture of security awareness and best practices within the organization.

At profound, we are dedicated to empowering organizations with the insights and control they need over their AI presence. We are seeking a proactive Security Engineer to spearhead the security framework of our platform, infrastructure, and corporate environment. You will collaborate closely with our Engineering and Operations teams to establish and uphold security controls, compliance procedures, and threat mitigation strategies that safeguard customer data while facilitating our rapid expansion.This position is perfectly suited for an individual who perceives security as a catalyst for business growth, rather than an impediment, and who is passionate about constructing practical, scalable security systems from the ground up. As our inaugural dedicated security hire, you will play a pivotal role in shaping our strategies for access control, vulnerability management, compliance, and incident response as we grow.

About Method SecurityAt Method Security, we are on a mission to redefine the landscape of cybersecurity in response to the rapid evolution of AI-driven threats. Our commitment lies in protecting essential institutions—ranging from government and defense to critical commercial sectors—against these advanced threats through the development of state-of-the-art, autonomous defense solutions. By integrating our expertise in AI, cybersecurity, and software engineering, we aim to shift the balance of power in security from the attackers to the defenders.Our Team and ValuesWhen you join Method, you become part of a distinguished, mission-oriented team that champions innovation, transparency, and excellence. We operate with intention, embracing a myriad of perspectives and experiences while upholding rigorous quality standards. Our culture is founded on trust, efficiency, and respect, fostering an environment where everyone can make significant contributions. We believe in the power of small, agile teams that can tackle complex challenges and yield remarkable results. At Method, you will have the freedom to lead projects, receive the support to overcome obstacles, and play a pivotal role in shaping the future of cybersecurity.Role OverviewAs a Security Engineer at Method Security, you will play a vital role in enhancing our product's capabilities by crafting tools and workflows that bolster the AI-driven defenses of our platform. This position demands a unique combination of security engineering expertise and software development skills to transform intricate security workflows into solutions that our product can autonomously utilize. You will collaborate closely with developers and product teams to ensure that the tools and security primitives within our offering empower users to address a variety of dynamic cybersecurity challenges.Key ResponsibilitiesDevelop and fortify both defensive and offensive security tools and workflows that augment the efficacy of our AI-driven platform.Create automated solutions within our product to optimize security workflows and facilitate intelligent responses to identified vulnerabilities and misconfigurations, utilizing Python and Go.Construct and maintain infrastructure utilizing Terraform and virtualization software for continuous testing and simulation.Engage with cross-functional teams to integrate security capabilities that align with user requirements and uphold high operational standards.Explore and implement diverse security tools and develop integration points within our product to support comprehensive security strategies.

About the Position Join our global team at Jane Street as an IT Security Engineer, where your extensive Windows engineering expertise and hands-on experience with contemporary security controls will play a pivotal role in safeguarding our IT platforms. You will be instrumental in enhancing the security of our internal IT and remote work environments through a blend of technical execution, consultation, and strategic influence across the IT team. We seek a candidate who possesses exceptional judgment and an eye for prioritizing intricate remediation efforts. Your insights will guide our mitigation strategies, while you provide essential technical counsel and decision-making support as required. Your responsibilities will include: Proactively proposing, designing, testing, implementing, and documenting advanced security controls. Coordinating and delivering security solutions across our IT platforms, while identifying opportunities for further automation of intelligent workflows. Developing scalable security controls, investigating emerging threats, creating new security tools, and spearheading vulnerability management initiatives. This role is part of our dedicated IT Engineering team, which monitors and manages our computing environment across three continents. Your analytical skills and expertise will be critical in supporting our colleagues' daily operations and ensuring our systems are maintained to the highest standards.

Join Relay Protocol as a Security Engineer and play a pivotal role in safeguarding our digital infrastructure. As a Security Engineer, you will be responsible for identifying vulnerabilities, implementing security measures, and ensuring the integrity of our systems. This position offers you the chance to work with cutting-edge technologies and collaborate with a dynamic team dedicated to maintaining high security standards.

About Blee Blee builds AI-powered solutions that help organizations streamline and strengthen compliance processes. Our platform serves thousands of active users from a wide range of enterprise clients, many of whom have long-term contracts. The team includes professionals with backgrounds at Adobe, Chime, PayPal, and AWS. While Blee’s roots are in San Francisco, we have recently opened an office in New York City, and most of our team works from one of these two locations. Role Overview: Security Engineer Blee is hiring its first Security Engineer in New York City. This person will own the company’s security framework, setting the foundation for how we protect our systems and data. The scope includes SOC 2 compliance, infrastructure security, and enterprise security assessments. As the first in this role, expect both autonomy and influence over key security decisions. Growth Path This role suits someone who wants to build a security program from the ground up. As Blee grows, the Security Engineer will have the chance to move into a leadership position, shaping security strategy and team structure as customer needs and regulations evolve. What You Will Do Lead compliance certifications such as SOC 2 Type II, ISO 27001, and frameworks like GDPR, CCPA, HIPAA, and PCI-DSS. Design and maintain secure infrastructure for real-time systems and AI batch processing workloads. Develop security practices and select tools that scale with the company, keeping security tightly integrated with engineering. Improve cloud infrastructure security by managing access controls, secrets, audit logging, and vulnerability management. Refine CI/CD pipelines and developer workflows to support both security and a smooth developer experience. Blee welcomes candidates who enjoy solving complex problems and want to make a direct impact on security at a growing company.

Join Our Security Operations Team We are seeking a passionate, driven, and technically inquisitive individual with a strong focus on IT operations to become a valued member of Jane Street’s IT Security team. Your role will be pivotal in safeguarding our firm's IT systems and user identities through hands-on technical work, innovative problem-solving, and collaborative teamwork. Key responsibilities for this position include: Deploying, documenting, and implementing security controls at scale. Contributing significantly to our Vulnerability Management program to effectively detect and mitigate vulnerabilities. Providing expert guidance and support to the IT department and IT Operations team during security incidents. Collaborating with engineering teams to develop both technical and non-technical solutions addressing security concerns. Assisting in the creation and refinement of our team’s operational playbooks and procedures. We are looking for someone who thrives in collaborative environments, enjoys tackling complex challenges, and is adept at delegating and escalating tasks efficiently. This role emphasizes communication, as you will be responsible for translating intricate technical issues for diverse audiences while maintaining accuracy. We welcome applicants from varied backgrounds, but preference will be given to candidates with experience in code-driven or declarative environments and hands-on experience in security incident response.

About Our CompanyGeneral IntuitionAs a pioneering research lab, we are committed to advancing foundation models tailored for environments that demand intricate spatial and temporal reasoning. Over the past year, we have been at the forefront of AI innovation, developing agents adept at navigating complex environments, creating world models that serve as training grounds for these agents, and enhancing video understanding models with an emphasis on real-world applicability.With a successful seed round of $133M secured from General Catalyst and Khosla, we are poised to establish ourselves as the leading AI lab specializing in embodied agents.Your RoleAt General Intuition, alongside our sister company Medal, we operate at the convergence of large-scale gaming data, cutting-edge AI research, and rapid product engineering. In this vital role, you will be responsible for securing the infrastructure that connects these domains. Your tasks will include fortifying our cloud environments, safeguarding our data pipelines, and ensuring our deployment systems are resilient against supply-chain attacks and other potential threats.You will create secure-by-default frameworks without hindering the efficiency of research or product teams, integrating standard security tools with customized protections as needed. Your contributions will significantly minimize operational risks for both General Intuition and Medal, helping us maintain trust as we expand sensitive AI workflows and large creator-driven platforms.

About EliseAIAt EliseAI, we are dedicated to revolutionizing vital industries such as housing and healthcare. Everyone deserves a comfortable home and access to quality healthcare, yet these essentials are often challenging to obtain. By seamlessly integrating AI agents into existing workflows, we enhance efficiency, reduce costs, and elevate the overall experience for our users.Housing: We streamline the rental experience by simplifying apartment tours, lease signings, maintenance requests, and communication with property management—bringing everything tenants need into one convenient platform.Healthcare: We facilitate appointment scheduling, streamline intake forms, and enhance communication between patients and providers, allowing everyone to prioritize health over paperwork.With EliseAI, organizations minimize manual tasks, enhance accessibility, and deliver a cohesive experience across crucial services. Recently, we secured a $250 million Series E round led by Andreessen Horowitz to further accelerate our mission.About The RoleEliseAI is seeking a Senior Security Engineer to join our dynamic team and safeguard our cutting-edge AI solutions. In this role, you will be tasked with designing, implementing, and maintaining robust security measures to protect our systems, data, and users. Collaborating closely with our engineering, IT, and infrastructure teams, you will identify and resolve security vulnerabilities, automate security processes, and ensure compliance with industry standards.Key ResponsibilitiesAutomate security processes, including asset management, vulnerability management, and patch management using cloud-based tools and scripting.Drive the integration of developer tooling—such as linters, static analysis tools, posture assessment scanners, and query inspectors—to expedite secure system development.Develop and incorporate security-first application foundations across our products.Contribute significantly to AWS security, ensuring comprehensive protection across our cloud infrastructure.Provide security guidance throughout the development lifecycle, including secure coding practices and vulnerability assessments.

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.

OverviewJoin Moment as a Security Engineer, where you will play a pivotal role in fortifying our security infrastructure. Our mission is to build cutting-edge trading and portfolio management technology, and we rely on your expertise to ensure the integrity and safety of our systems.Position HighlightsLocation: 5 days/week at our NYC headquartersBase Salary: $200K to $325KEquity: Competitive initial grant plus annual performance bonusesAbout MomentFounded in 2023 by a talented group of quantitative traders and researchers from Citadel and Jane Street, Moment is at the forefront of developing next-generation trading technologies. With over $100M in funding from prominent investors such as Andreessen Horowitz and Index Ventures, we support crucial workflows for financial institutions managing upwards of $8 trillion in assets.Role ResponsibilitiesAs a key member of our security engineering team, you will:Gain an in-depth understanding of our products and collaborate with engineering teams to ensure they are built securely.Integrate and develop tools that promote secure coding practices across the organization.Design, implement, and advocate for application primitives that enhance our security posture.Work with platform engineers to devise and deploy solutions to common security challenges.Take charge of leading security incident responses.Your ProfileYou are an ideal candidate if you:Are an engineer at heart, eager to grow as a security expert in a fast-paced environment.Possess a robust understanding of security technologies, tools, and industry trends.Have experience in platform or infrastructure roles.Preferred QualificationsExperience with AWS and managing secure cloud environments.History of leading efforts to resolve security incidents.Familiarity with programming languages such as Go, Python, or TypeScript.

About 10a Labs: 10a Labs serves as the essential safety and threat-intelligence framework relied upon by pioneering AI labs, high-growth AI companies, Fortune 10 enterprises, and major global technology platforms. Our expert red teaming, model evaluations, and intelligence-gathering activities empower engineering, safety, and security teams to preemptively tackle emerging threats and ensure the secure deployment of AI systems.Role Overview: As a Security Engineer, you will play a crucial role in safeguarding advanced AI systems. Your responsibilities will include identifying vulnerabilities, integrating protective measures into code and workflows, and collaborating closely with researchers to mitigate risks posed by adversarial actors. This position demands robust technical expertise, a proactive security mindset, and adaptability in a dynamic startup atmosphere where threats and priorities shift rapidly.