Senior Application Modernization Engineer

Join Our TeamAt Turnkey, we are revolutionizing the way developers manage private key infrastructure, crafting secure, developer-first solutions that empower wallet creation, transaction signing, and automated on-chain actions—all through a streamlined API that safeguards sensitive key information.Our ambition is to fortify the open internet by establishing …

About UsAt Turnkey, we develop secure, developer-centric infrastructure for private key management, simplifying the process of creating wallets, signing transactions, and automating on-chain actions through a single, elegant API—without ever compromising sensitive key material.Our mission is to fortify the open internet by making strong cryptography and key management the standard. Founded by the team behind Coinbase Custody, the world’s largest and most secure cryptocurrency custodian, our work has safeguarded over $100 billion in crypto assets across the industry.Our team embodies a culture of low ego, high agency, and autonomy, bringing over 100 years of combined expertise in cryptography, security, and low-level systems, building robust infrastructure designed for scalability.Role OverviewWe are on the lookout for a Senior Corporate Security Engineer to spearhead and enhance the security of Turnkey's corporate infrastructure. This is a pivotal role as you will be our first dedicated corporate security hire, collaborating directly with the security lead to establish enterprise security capabilities from the ground up.In this capacity, you will safeguard Turnkey’s personnel, endpoints, SaaS applications, identity systems, and internal infrastructure, ensuring the security of our distributed workforce while enabling rapid progress without compromising safety. Operating at the intersection of security engineering, IT operations, and risk management, you will design and implement security controls that are robust yet user-friendly, ensuring our company remains secure as we grow.What You’ll DoBuild & Secure Corporate InfrastructureArchitect, implement, and oversee security measures for endpoints and distributed systems; deploy and manage our security stack (MDM, EDR/XDR, ZTNA, SSO); enforce zero-trust principles, least-privilege access, and hardening standards.Drive Security Initiatives & Risk ReductionLead initiatives focused on endpoint hardening, access controls, and vendor risk; conduct security design reviews, risk assessments, and vulnerability remediation; develop and enforce security policies and best practices.Detection, Response & AutomationRespond to security incidents with urgency and technical expertise; collaborate on detection rules, alerts, and monitoring; automate workflows and create runbooks and playbooks to efficiently scale security operations.

Backend EngineerJoin Turnkey as we transform key management in the Web3 ecosystem with our innovative API focused on security, flexibility, and user experience. Our founders led the growth of Coinbase Custody to over $100M ARR, and now we are on a mission to rebuild crypto infrastructure from the ground up, tackling key security challenges to empower developers.Our vision is akin to how AWS revolutionized computing; we are developing the trustless and decentralized infrastructure that will facilitate the next generation of mass-market crypto applications, addressing the significant challenge of secure and adaptable key management.We seek passionate engineers who believe in the transformative power of crypto. As versatile engineers, we embrace diverse challenges across technologies. While we utilize Go, Typescript, and Rust in production, we value strong foundational skills and experience in creating scalable infrastructure.

Engineering ManagerTurnkey is an innovative management API designed with a focus on security, flexibility, and user-friendliness. Established by the visionary leaders who successfully scaled Coinbase Custody into a thriving $100M+ ARR enterprise, Turnkey is revolutionizing the landscape of crypto infrastructure by addressing core security challenges at their very foundation. Our mission is to create a platform that enables developers to tap into the next generation of mass-market crypto applications, effectively solving the issues of secure and adaptable key management.Similar to how AWS redefined computing with the introduction of cloud services, Turnkey is poised to transform development in the cryptocurrency space with its trustless, transparent, and decentralized infrastructure.We are on the lookout for an Engineering Manager who will spearhead growth within our engineering team. If you are passionate about the transformative potential of web3 and are eager to play a pivotal role in shaping that evolution, we invite you to join us in redefining decentralized development.Your Responsibilities:Strategic Vision and LeadershipFormulate and communicate a comprehensive engineering strategy and technical vision.Lead a high-performing engineering team, guiding the development of Turnkey’s innovative products and infrastructure.Assess and integrate emerging technologies and trends within the web3 ecosystem into our product and infrastructure.Collaborate with leadership to attract and onboard top engineering talent.Contribute to strategic planning and technical decision-making processes.Architectural Oversight and Technical DirectionProvide strategic technical leadership, ensuring that architectural decisions align with our long-term objectives.Oversee the design and deployment of modern application architectures, tailored to meet the unique demands of web3.Guarantee the scalability, security, and reliability of our infrastructure, tackling the intricacies of decentralized systems.Assist in establishing and executing processes that enhance quality and consistency in our product and infrastructure development.

Your RoleJoin us at Turnkey as a Technical Support Engineer, where you will empower developers to seamlessly integrate, troubleshoot, and excel with our innovative SDKs and APIs across various platforms, from React and mobile applications to backend servers and CLI tools. You will serve as the primary technical expert, assisting customers in creating the next wave of crypto products using Turnkey’s solutions.Your day-to-day will involve analyzing code, diagnosing issues, and quickly resolving developer roadblocks—all while identifying opportunities to enhance our SDKs, documentation, and overall platform experience.This hands-on, technical position requires a keen debugging skillset, customer-centric approach, and a holistic mindset. It's ideal for someone passionate about problem-solving, thriving in dynamic environments, and eager to contribute to a team dedicated to delivering exceptional developer experiences.What You’ll DoTriaging, troubleshooting, and resolving customer issues across our SDKs and APIs for web, mobile, and backend integrations.Debugging integrations across diverse platforms and programming languages.Identifying, reproducing, and documenting bugs, collaborating with engineering to ensure resolutions.Supporting customers in their integration setups and verification, including configuration, authentication flows, and signing.Creating and maintaining example code, troubleshooting guides, and internal documentation.Recognizing patterns in recurring issues and suggesting enhancements to documentation and SDKs.Collaborating with Product and Engineering teams to provide feedback and insights from customer interactions.Contributing to the improvement of internal tools and processes to scale our technical support capabilities.What We’re Looking For2–6 years of experience in technical support, solutions engineering, or software engineering roles.Proficiency in TypeScript and React, with familiarity in React Native or other mobile SDKs.Experience in debugging APIs (REST, JSON, authentication headers, 4xx/5xx errors, etc.).Strong analytical and problem-solving skills, with a willingness to explore unfamiliar systems.Excellent written and verbal communication skills, with a focus on customer empathy.Ability to thrive in a fast-paced startup environment with changing priorities.A genuine passion for contributing to a world-class developer experience.

At GuidePoint Security, we are dedicated to delivering top-tier cybersecurity expertise, solutions, and services that empower organizations to make informed decisions while minimizing risks. Our comprehensive three-tiered approach to evaluating security postures and ecosystems enables leading organizations, including Fortune 500 companies and U.S. government entities, to effectively identify threats, optimize resources, and implement tailored solutions to mitigate risks.Role OverviewAs a Senior Application Security Consultant within our Strategic Services team, you will provide a wide range of strategic Application Security services, including Application Threat Modeling, Application Architecture Reviews, and AppSec/DevSecOps Program Assessments. This role offers an excellent opportunity to engage with clients across diverse industries and contribute significantly to enhancing their security postures.Joining our elite team, you will be responsible for conducting engagements, maintaining effective communication with clients, delivering detailed reports, and providing actionable remediation guidance. Additionally, you'll play a vital role in refining our service offerings in alignment with emerging threats and evolving client needs.We are particularly interested in candidates who have transitioned from software development into the realm of application security, possessing hands-on coding experience and a comprehensive understanding of secure software development practices.

Your RoleAs a Full-Cycle Recruiter at Turnkey, you will take charge of the entire recruiting process—from talent sourcing and outreach to extending offers and closing candidates—across both technical and business areas. You will collaborate closely with hiring managers to ensure seamless and efficient hiring processes, provide an outstanding candidate experience, and elevate the quality of each hire.In addition, you will play a crucial role in enhancing our recruitment frameworks, fortifying our employer brand, and establishing a scalable recruiting foundation to support our rapid growth.This high-impact and visible position is perfect for someone who thrives in dynamic environments, enjoys building effective systems, and takes pride in maintaining streamlined processes.What You’ll DoOversee the full recruiting cycle: sourcing, screening, interviewing, and securing top talent across various departments.Cultivate strong partnerships with hiring managers to gain an in-depth understanding of role requirements and ensure alignment throughout the recruitment process.Employ innovative sourcing methods to discover talent beyond traditional avenues.Manage candidate experiences from first contact to closure, ensuring every interaction exemplifies Turnkey’s excellence.Maintain organized, high-quality data and reporting within our ATS.Collaborate with leadership to anticipate hiring needs and develop effective hiring strategies.Enhance Turnkey’s employer branding through engaging storytelling and consistent messaging.Continuously optimize recruitment processes for improved efficiency, speed, and quality of hires.Experiment, assess, and enhance; assist Turnkey in building a scalable recruitment engine.What We’re Looking For5+ years of full-cycle recruiting experience, preferably in a high-growth tech environment.Demonstrated success in closing candidates across both technical and business roles.Exceptional organizational skills and a systems-oriented mindset; naturally bring structure to fast-paced settings.Ability to manage multiple roles simultaneously without compromising quality or detail.Excellent written and verbal communication skills.Driven, resourceful, and dedicated to finding and engaging top talent.

At Garner, we are on a mission to revolutionize the healthcare landscape, ensuring high-quality and affordable care for everyone.We are fundamentally rethinking how healthcare operates in the U.S. by collaborating with employers to reshape healthcare benefits through clear incentives and powerful, data-driven insights. Our innovative approach leads employees to superior, cost-effective care, creating a system that benefits all parties involved. Patients experience improved health outcomes, employers utilize healthcare funds more efficiently, and physicians are rewarded for providing outstanding care instead of simply increasing procedure counts.Garner is among the fastest-growing healthcare technology firms in the nation. Our products are trusted by some of the most sophisticated employers and providers in the industry, and we are assembling a team of talented, mission-driven individuals who are eager to make a significant impact on healthcare at scale.About the Role:We are in search of an outstanding Senior Security Engineer to join our Security Engineering team. In this pivotal role, you will be instrumental in safeguarding our most valuable asset: patient data. The Security Engineering team at Garner is tasked with securing cloud infrastructure, implementing secure code guardrails, and fostering trust with our clients. This position involves a variety of projects that span multiple security domains.Where You Will Work:This position is open to remote candidates across the U.S. For those located in New York City, a hybrid schedule will apply, requiring in-office attendance on Tuesday, Wednesday, and Thursday each week.What You Will Do:Lead technical initiatives to secure networks, systems, applications, and databases.Participate in our Security Engineering on-call rotation to address security incidents.Integrate security into the build pipeline through automated SAST/DAST testing and policy enforcement.Manage vulnerability assessments and coordinate remediation efforts.Educate engineers and promote a culture of security within the engineering organization.

As a Senior Security Engineer, you will play a pivotal role in fortifying our technical landscape by architecting, implementing, and automating comprehensive security measures throughout our application stack and cloud environments, with a primary focus on AWS and considerations for GCP.Your expertise will enhance our security framework by actively identifying and addressing vulnerabilities, developing sophisticated security solutions throughout the Software Development Life Cycle (SDLC), and creating scalable automation using languages and tools such as Python, Go, Terraform, and Tines. Your contributions will be essential in preventing unauthorized access and exfiltration of Protected Health Information (PHI), enabling our transition towards a proactive defense strategy.This fully remote position reports to the Senior Manager of Security Engineering and is crucial to advancing our organization's security maturity and overall resilience.

The Canonical Security Operations team is on the lookout for a dynamic Senior or Staff Engineer to join our ranks. As a pivotal member of our team, you will play a crucial role in designing, building, and operating a state-of-the-art Security Operations Center (SOC). Your leadership, mentorship, and technical expertise will guide our efforts to maintain the highest security standards.This multifaceted role encompasses:Core SOC responsibilities, including security monitoring, threat hunting, and incident response.Security engineering focused on evaluating and fortifying Canonical's platforms and products.Software engineering to create tailored tools and platforms.Site Reliability Engineering (SRE) to deploy, maintain, and automate security solutions.We seek candidates with robust engineering and security backgrounds, complemented by a track record of significant achievements. Whether you are a seasoned security operations professional with engineering expertise or a senior developer with a strong security focus, you will find this role rewarding.In addition to safeguarding Canonical’s digital assets, this position offers a unique opportunity to engage with the open-source community. Team members will have the chance to present at industry conferences, share threat intelligence, and contribute to open-source security software.We also have openings for junior positions for candidates with a strong academic or professional foundation.

MissionAt Speechify, our mission is to eliminate reading barriers to enhance learning experiences for everyone.With over 50 million users benefiting from our innovative text-to-speech solutions, Speechify transforms various reading materials—such as PDFs, books, Google Docs, news articles, and websites—into audible formats. This capability allows users to read faster, absorb more, and retain information better. Our award-winning text-to-speech products include applications for iOS, Android, Mac, a Chrome Extension, and a Web App. Recognized as the Chrome Extension of the Year by Google and the recipient of Apple’s 2025 Design Award for Inclusivity, Speechify is committed to accessible technology.Our diverse team of nearly 200 professionals operates in a fully remote environment, with talents hailing from industry giants like Amazon, Microsoft, and Google, as well as renowned academic institutions like Stanford and successful startups such as Stripe, Vercel, and Bolt.

Our MissionAt Speechify, we are driven by a powerful mission: to eliminate the barriers that reading can impose on learning. With over 50 million users, our innovative text-to-speech solutions transform various reading materials—PDFs, books, Google Docs, news articles, and websites—into audio format, allowing users to enhance their reading speed, comprehension, and retention.Our suite of text-to-speech products includes applications for iOS, Android, Mac, a Chrome Extension, and a Web App. Recently, we were honored with the title of Chrome Extension of the Year by Google and received Apple’s 2025 Design Award for Inclusivity.Our dynamic team of nearly 200 professionals operates entirely remotely, collaborating from around the globe. We are proud to have experts from diverse backgrounds, including Amazon, Microsoft, Google, Stanford's PhD programs, and high-growth startups like Stripe, Vercel, and Bolt, as well as numerous founders of successful companies.

About LiatrioLiatrio is a dynamic consulting firm focused on transforming software delivery through collaboration and innovation. We strive to enhance enterprise delivery by developing cutting-edge DevOps platforms and coaching engineering and business teams throughout the process. Our partnerships span a variety of industries, from finance to healthcare. Join us to make a significant impact in fostering change across people, processes, culture, and technology!Who You AreAt Liatrio, we value team members who embody the following attributes:- Eagerness to learn and grow- Commitment to open communication and transparency- Strong collaborative spirit and willingness to share responsibilities- Skillful in navigating challenging conversations- Passion for solving complex interpersonal, technical, and business challenges- Capacity to acknowledge areas for improvement and propose solutions- Empathetic towards colleagues and clients- Enthusiastic about mentoring and fostering growth in others- Ability to thrive in ambiguous and rapidly changing environmentsWhat You Will DoWe are seeking a proactive technical leader with a passion for application development, modernizing legacy systems, cloud-native architecture, and DevOps technologies. Your goal will be to assist organizations and engineering teams in enhancing the quality and speed of their software delivery.You will bring a wealth of experience in several of the following areas, but not necessarily all. We value diverse skills and experiences that might not be listed here.Client Delivery Responsibilities- Lead technical delivery within a project or workstream under the direction of an account leader or architect- Ensure technical excellence for the assigned project or workstream- Mentor and uplift engineering teams, enhancing their capabilities and fostering a culture of continuous improvement

As a Senior Threat Research Engineer at Material Security, you will play a pivotal role in enhancing our product's ability to detect email-based threats. Your primary goal is to utilize your analytical expertise to uncover and monitor threats and adversaries that have bypassed existing email security measures, while also aiding in the advancement of our internal detection and response programs. Your daily responsibilities will include a combination of exploration, analysis, triage, and collaboration with a team of world-class engineers and security professionals.Key ResponsibilitiesEnhance the processes, tools, and methodologies for detecting malicious or hazardous emails.Develop detection rules that empower customers to identify email threats that other solutions may overlook.Investigate attacker campaigns to discover methods for fingerprinting attacker activities, infrastructures, and strategies.Identify valuable signals and features for training message classification systems.Uphold high standards of privacy concerning our customers’ data.Collaborate with our Security Architects and customers to reduce risk by enhancing their email security posture and using their data to inform better risk management decisions.

We are excited to announce multiple openings for Senior and Staff Security Operations Engineers (SOC) as we establish a dedicated team reporting directly to our Chief Information Security Officer (CISO). We seek candidates with a diverse range of expertise. At the senior level, we are looking for individuals with extensive experience defending critical assets and high-value cyber targets against sophisticated threats from advanced persistent threats and state-sponsored actors. For more junior roles, we welcome exceptional candidates with a demonstrated passion for cybersecurity, engagement in cyber defense, and notable academic and professional achievements, even if their experience is limited.Our mission is to enhance the security and reliability of the open-source supply chain. While we monitor our own infrastructure, our broader objective is to strengthen the overall security of the global Ubuntu ecosystem through the efforts of this team.The Security Operations (SecOps) team is pivotal in designing, implementing, and evolving Canonical's security practices, techniques, tools, systems, and policies. This team leads strategies that dictate how Canonical secures its data, internal infrastructure, and build processes, ensuring the integrity and security of our infrastructure and product deployments. They are responsible for developing and implementing technical security controls that automatically detect, contain, and remediate security threats. Additionally, the team will contribute to Canonical's product security, reinforcing the resilience of all Ubuntu customers and users against cyber threats.The SecOps team is committed not only to securing Canonical but also to enhancing the security of the broader open-source community. They will have opportunities to share knowledge through public presentations, participate in industry events, and engage in threat intelligence sharing within the community.

Join Binance, the world’s leading blockchain ecosystem, as a Security Engineer focused on fortifying our cloud infrastructure, CI/CD pipelines, and production systems. In this pivotal technical role, you will enhance our security posture, prioritize preventative measures, and implement secure-by-default platforms. Collaborating closely with our Platform, DevOps, and Engineering teams, you will design and operate security tools across cloud environments, Kubernetes, and CI/CD pipelines, with a strong emphasis on developing production-grade security software using Python.

Join Offchain Labs as a Blockchain Security Engineer and play a pivotal role in revolutionizing decentralized applications. We are at the forefront of blockchain scalability and security, addressing real-world challenges while upholding the principles of decentralization, security, and transparency. As part of our innovative team, you will engage with ambitious thinkers and problem-solvers dedicated to creating a more equitable digital future. If you thrive in dynamic environments and are passionate about the potential of decentralized systems, we want to hear from you!

Join Canonical as an Ubuntu Security Engineer and be part of a dynamic team dedicated to securing open source software. This role involves monitoring and addressing vulnerabilities in the Ubuntu ecosystem, collaborating with internal teams and external partners to enhance security features, and contributing to the overall safety of the community. You will engage with talented professionals in technology, participate in industry events, and make a meaningful impact on global security initiatives. International travel is required twice a year for strategic alignment.

OppFi is a pioneering tech-enabled digital finance platform that collaborates with banks to offer financial products and services tailored for everyday Americans. Our commitment to transparency and responsibility enables us to support consumers who are often overlooked by traditional finance options, helping them to achieve better financial health.We are a team of compassionate, innovative, and inclusive individuals who thrive on embracing diverse talents, expertise, perspectives, and backgrounds. Our employees tackle every new challenge with a unique vision to see what can be achieved rather than merely accepting the status quo. Guided by our business principles, we foster an open and collaborative culture where continuous improvement is the norm, and the best ideas always prevail! We invite individuals who are eager to impact the financial system by facilitating access to credit, enhancing financial inclusion, promoting fiscal wellness, and delivering outstanding customer service.Fun facts: OppFi is consistently rated as one of the top consumer financial platforms online, boasting a 4.5/5.0-star rating on Trustpilot. We are proud to be recognized as a 2025 Crain’s Fast 50™ company and featured on Built In's 2025 Best Places to Work in Chicago.About the role:We are seeking a Manager of Enterprise Application Engineering to join our dynamic OppFi Technology team. This pivotal role will report directly to the Senior Director of Platform and Operations and will lead a talented team of engineers dedicated to advancing OppFi’s technological initiatives.Your Responsibilities:As the Manager of Enterprise Application Engineering, you will lead a skilled team of engineers, serving as their technical mentor and professional guide. Your objective is to be the trusted technology partner that revolutionizes business operations by creating a secure, scalable, and automated environment that empowers our workforce, safeguards our data, and propels our business forward.Team Leadership & MentorshipLead, mentor, and cultivate a world-class team of Enterprise Application Engineers.Oversee hiring, onboarding, performance management, and the career development of your direct reports.Act as the "player-coach" and foremost technical expert for your team, adept at unblocking your engineers, leading complex architectural reviews, and resolving challenging issues.Encourage a culture of accountability, collaboration, and perpetual improvement.