Turnkey

• Own end-to-end design for Turnkey's core product: dashboard, developer experience, policy controls, and operational tooling • Embed closely with product and engineering — in the room early, shaping the problem before the solution is decided • Run discovery, prototyping, and iteration cycles with real users: developers, security teams, and operators • Translate technically complex workflows into interfaces that feel obvious • Collaborate with the existing designer on design system consistency and shared standards • Raise the bar on interaction quality and product coherence across everything we ship

• Own the entire docs surface: audit, restructure, and continuously improve existing content • Write and maintain reference docs, guides, and code examples across the full API and SDK • Build the systems and standards that will govern docs as the product scales • Partner closely with engineering to ship docs alongside features, not after • Develop and maintain code examples that are accurate, idiomatic, and actually useful to developers • Think proactively about how LLMs and agents interact with Turnkey's docs — structure, format, and maintain content with machine readability and agentic use in mind

• Work directly with customers in the pre-sales phase to evaluate their use cases and guide technical decision-making • Design and prototype lightweight integration examples using Turnkey's APIs and SDKs • Join technical calls to answer questions around security architecture, enclave infrastructure, and developer workflows • Develop integration plans for customers and collaborate with the Customer Support team in their implementation • Own post-sales integration work alongside customers from kickoff through go-live • Contribute to customer-facing materials: sample code, technical diagrams, implementation guides, whitepapers • Collaborate with Sales, Product, and Engineering to scope integration paths and unblock deals • Assist in completing security, infrastructure, and architecture due diligence forms • Capture technical feedback and relay product feature gaps back to the internal team • Contribute to the ongoing improvement of our developer experience, including flagging gaps in documentation or SDKs

• Design and build systems from the ground up without cutting corners on security or usability • Develop signing infrastructure and applications to run inside secure computing environments • Collaborate effectively across the company to design and deliver the core product • Write internal product specifications, external developer documentation, whitepapers, etc. • Design and build new product features end-to-end driven by customer requests • Assist in scaling out a world-class engineering team • Develop thoughtful deployment processes and infrastructure to reduce the risks inherent in the software development lifecycle

• Triage, troubleshoot, and resolve customer issues across our SDKs and APIs covering web, mobile, and backend integrations • Debug integrations across a variety of platforms and languages • Identify, reproduce, and document bugs, partnering with engineering to drive them to resolution • Support customers in setting up and verifying integrations, including configuration, auth flows, and signing • Create and maintain example code, troubleshooting guides, and internal playbooks • Spot patterns in recurring issues and propose fixes or improvements to documentation and SDKs • Partner with Product and Engineering to relay feedback and insights from the field • Help improve internal tools and processes to scale our technical support function

• Develop and articulate the overarching engineering strategy and technical vision • Manage a high-performing engineering team and guide the development of Turnkey’s product and infrastructure • Identify and evaluate emerging technologies and trends in web3 and guide their integration into our product and infrastructure • Collaborate with leadership to drive recruitment and onboarding of top engineering talent • Contribute to overall strategic planning and technical decision making • Provide strategic technical guidance and leadership, ensuring intelligent architectural decisions that support our long-term goals • Oversee the design and implementation of modern application architectures, optimized for the unique challenges of web3 • Ensure the scalability, security, and reliability of our infrastructure, addressing the complexities of decentralized systems • Contribute to defining and delivering processes that drive quality & consistency to our product & infrastructure development

• You will partner with Product and Engineering at both the design and development stage to ensure that we implement new features securely, including (but not limited to): • Participating in the implementation efforts • Doing security reviews • Helping with product design decisions • Auditing and surfacing vulnerabilities in our current products • Conducting threat modeling and security assessments for new features and systems, identifying risks early and shaping secure architectural decisions. • Developing and improving our Automated Tooling: further enhancing our automated tooling to scale our product security capabilities and find potential code problems both before and after we deploy • Making the safe way, the easy way: work on defining and building application guardrails so that developers can build securely by default • Investigating and remediating security issues, including vulnerabilities and incidents, and drive long-term improvements to prevent recurrence • Embedding a culture of secure development across engineering, defining practices that influence how Turnkey builds, deploys, and maintains systems at scale.

• Build & Secure Corporate Infrastructure • Design, implement, and manage security for endpoints and distributed systems; deploy and operate our security stack (MDM, EDR/XDR, ZTNA, SSO); enforce zero-trust principles, least-privilege access, and hardening standards • Drive Security Initiatives & Risk Reduction • Lead initiatives around 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 & Automation • Respond to security incidents with urgency and technical depth; collaborate on detection rules, alerts, and monitoring; automate workflows and create runbooks and playbooks to scale security operations efficiently. • Foster Security Culture & Education • Evangelize security best practices, build awareness programs, and partner with teams to embed “secure by default” principles into workflows; serve as a trusted security advisor across the organization.

• Build the GTM Motion: Establish Turnkey’s presence in the crypto/fintech market, identifying new verticals and high-value opportunities. • Own Full Sales Cycle: Drive deals end-to-end—prospect, qualify, run technical discovery, design solutions, negotiate contracts, and close. • Craft Deal Strategies: Develop creative approaches for first-of-kind, complex deals; align cross-functional stakeholders internally and externally. • Engage the C-Suite: Build trusted relationships with senior decision makers (CIO, CTO, CISO, CFO) at our prospective and current clients. • Navigate Complex Products: Translate technical capabilities (APIs, security models, integrations) into clear business value for diverse stakeholders. • Influence GTM & Product: Partner closely with founders, exec, Product, and Engineering—bringing market insights back to shape our roadmap. • Represent Turnkey Externally: Act as an ambassador at industry events, conferences, and in strategic networks.

About Us Turnkey is developer-first infrastructure for private key management, making it simple to create wallets, sign transactions, and automate on-chain actions through one elegant API, without ever exposing sensitive key material. Founded by the team who scaled Coinbase Custody from zero to a $100M+ ARR business and helped protect over $100B in crypto assets, Turnkey is tackling crypto security at its foundational level. Our mission is to make strong cryptography the default across the open internet the same way AWS made scalable computing the default for software. Our team is low-ego, high-agency, and high-autonomy, with a significant amount of combined experience in cryptography, security, and low-level systems. We're building the trustless, programmable infrastructure that will power the next wave of mass-market crypto applications and we're looking for people who want to shape what that future looks like. Role Overview We are hiring a Senior Application Security Engineer to join Turnkey's team and help ensure our systems, pipelines, and runtime environments are secure by design and resilient at scale. You'll embed directly with product and infrastructure engineering teams, shaping how security is integrated into every aspect of our architecture. This is a hands-on, builder role ideal for someone who enjoys building secure systems from the ground up. What You’ll Do You will partner with Product and Engineering at both the design and development stage to ensure that we implement new features securely, including (but not limited to): - Participating in the implementation efforts - Doing security reviews - Helping with product design decisions - Auditing and surfacing vulnerabilities in our current products - Conducting threat modeling and security assessments for new features and systems, identifying risks early and shaping secure architectural decisions. - Developing and improving our Automated Tooling: further enhancing our automated tooling to scale our product security capabilities and find potential code problems both before and after we deploy - Making the safe way, the easy way: work on defining and building application guardrails so that developers can build securely by default - Investigating and remediating security issues, including vulnerabilities and incidents, and drive long-term improvements to prevent recurrence - Embedding a culture of secure development across engineering, defining practices that influence how Turnkey builds, deploys, and maintains systems at scale. What We're Looking For - Bachelors degree in Computer Science, Engineering, or a related field - 5+ years of experience in application or product security, ideally in fast-moving, high-impact or crypto-native environments - Strong understanding of web, mobile, and cryptographic security fundamentals (e.g. OWASP Top Ten, SANS/CWE Top 25) - Proficiency in programming and scripting languages (Typescript/Javascript, Go, Rust) and experience building secure systems from the code up - Hands-on experience with security testing tools and methodologies (static/dynamic analysis, pen testing, etc.) - Strong understanding of cloud, containerized, and runtime environments (AWS, GCP, Docker, Kubernetes), with the ability to embed security early in the SDLC - Excellent analytical, problem-solving, and communication skills, with a collaborative mindset for partnering across product and infrastructure teams - Curious, proactive, and passionate about building secure, reliable systems in a fast moving startup environment - A builder mentality; comfortable operating with ambiguity, tackling incomplete systems, and applying hands-on engineering experience to security challenges. Style Points - Familiarity with crypto or DeFi systems and their unique security challenges - Familiarity with threat modeling frameworks and cloud-native security tooling What We Offer - Full benefits, including medical, dental, vision, life, disability, HSA/FSA, 401(k) - detailed benefits overview available as we get further in the process - Paid parental leave - Unlimited PTO - $3,000/yr learning and development budget to attend industry conferences - Multiple team offsites per year - Lunch stipend Turnkey is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status, or any other characteristic protected by law. We encourage individuals of all backgrounds to apply. Compensation range $175,000—$275,000 USD