About the Role

The Platform Security team sits at the core of the Fireblocks platform. We are responsible for the engine that evaluates, enforces, and governs every action taken within the system. If it involves a governance policy, an approval chain, or access control, it touches our team.

We are looking for a strong, ownership-driven Senior Software Engineer to lead our Policy Engine and Governance domain. You will perform mission-critical engineering at high scale, where correctness is everything. This role requires a true "builder", someone who can architect complex, distributed business logic while also having the technical depth and willingness to dive into low-level C++ code to optimize core platform components.

What You’ll Do

• Own the Domain: Take end-to-end technical ownership of the Policy Engine and Governance domain, driving the architecture, design, and implementation from 0 to 1 and beyond.
• Bridge High-Level & Low-Level: Navigate seamlessly between designing highly available, modern microservices and writing/maintaining performance-critical, low-level C++ code when the system demands it.
• Build for Scale: Implement robust backend applications to process complex rule evaluations at scale and with minimal latency.
• Collaborate & Lead: Act as a technical leader within the team, collaborating closely with Product, and other engineering teams to translate complex enterprise governance requirements into scalable technical solutions.
• Maintain Excellence: Ensure the robustness and maintainability of our services, taking part in incident response, on-call rotations, and operational excellence.
• Leverage AI: Utilize modern AI tools and agents to accelerate development workflows, while applying critical judgment to validate AI-generated output in complex or high-stakes contexts.

What You’ll Bring

Must-Have:

• 8+ years of backend engineering experience building large-scale, high-volume distributed systems or SaaS platforms.
• Polyglot & Systems Depth: Strong proficiency in modern backend languages (e.g., Go, TypeScript, Python, or Java) combined with hands-on experience and a willingness to touch low-level C++ code.
• Architectural Mastery: Deep understanding of system design, microservices architecture, concurrency, and distributed SQL databases.
• Builder's Mentality: A proven track record of taking deep ownership of a complex product domain, acting as a technical anchor, and pushing projects forward independently.
• AI Tooling Experience: Hands-on experience working with AI development tools (Claude Code, Cursor, etc.) and the critical engineering judgment to know when to trust and when to override them.
• Infrastructure Knowledge: Experience working with cloud and backend technologies (e.g., Docker, Kubernetes, AWS, DataDog).

Strong Advantage:

• Security Mindset: A background in cyber-security, adversarial thinking, or experience working in highly security-sensitive environments.
• Governance Expertise: Experience building Policy Engines, Rule Engines, Identity and Access Management (IAM) systems, or authorization frameworks.
• Blockchain Knowledge: Familiarity with the blockchain ecosystem, smart contracts, or digital assets.

Role Overview

We are looking for a proactive Security Assurance Lead to advance our security program into a proactive "validate and verify" model. Your mission is to ensure our defenses aren't just present, but effective. In this hands-on technical role will own and manage testing, validating and reporting on our security posture, through automated testing against our controls, and ensure our security stack is optimized, integrated, and fully utilized.

Key Responsibilities

• Security Assurance Management: Define, orchestrate and drive the security assurance program from vision to full implementation.
• Continuous Control Validation: Design and execute automated testing (e.g., Breach & Attack Simulation) to verify that prevention and detection controls are functioning across cloud, SaaS and IT environments.
• Central Visibility Hub: Build and maintain a real-time Security Posture Dashboard. This hub will provide a single pane of glass for the coverage and health of our security stack.
• Tool Optimization & Efficacy: Review our existing security suite to ensure tools are properly configured, integrated, and delivering ROI. You will identify "blind spots" where tools are installed but not effectively monitoring or blocking.
• Offensive Testing Strategy: Coordinate regular external offensive testing cycles such as Penetration Testing, Phishing, etc. and translate "broken" controls and findings into actionable items.
• Operational Excellence: Define clear ownership, maintenance schedules, and lifecycle processes for all security technologies to prevent "tool rot."

Required Experience & Qualifications

• 8+ years experience of cybersecurity engineering and architecting (Infosec/DevSecOps).
• Proven technical capabilities in automation, scripting, AI, etc.
• Experience in offensive testing methodologies and practices such as penetration testing, red team exercises, etc.
• Strong understanding of breach simulation, continuous control monitoring (CCM) and technical validation concepts and methodologies.
• Strong understanding of:
• Cloud and SaaS security (WAF, CNAPP)
• Identity, access control, and infrastructure security (IDM, IDP, PAM)
• Endpoint and corporate IT security (EDR, DLP, SASE)

Required Skills & Attributes

• Self-directed architect: Able to take full ownership of the security assurance roadmap from initial design and selection to a working, breathing program.
• Authority without ego: Able to lead across departments without formal reporting lines. While you will operate independently, success is measured by your ability to partner with peers to achieve implementation and ongoing adherence.
• Critical thinking: Able to challenge, validate and verify, while maintaining trust and collaboration with peers and stakeholders.
• Strategic planning: Don’t just patch and quick fix, but ensure correct practices and procedures are developed to provide assurance over time.
• Executive communication: Clear, concise, and credible with senior leadership.
• Analytical thinking: Attention to details and ability to connect multiple dots into a concise and accurate picture.

Nice to Have

• Experience in crypto, fintech, or highly regulated financial environments
• Familiarity with the NIST Cybersecurity Framework (CSF) 2.0, Cloud Security Alliance (CSA) controls matrix, offensive security frameworks (MITRE), etc.

Founded in 2018 and already valued at over $8 billion, Fireblocks is a SaaS platform that helps companies to create innovative products on the blockchain and manage day-to-day crypto operations. Fireblocks is trusted by some of the largest financial institutions, banks, globally recognized brands, and Web3 companies in the world, including BNY Mellon, BNP Paribas, ANZ Bank, Revolut, and thousands more, to securely scale digital asset operations through the Fireblocks Network and MPC-based wallet infrastructure. We have offices in New York, London, Tel Aviv, and Singapore, and we are continuing to expand our teams to reach new customers globally.

The Security & Information team is looking for someone who is passionate about technology and has a roll-up-their-sleeves mentality to join our global team. You’ll play a crucial role in enhancing our security infrastructure, improving networking, ensuring scalability, and maintaining strong security as we continue to grow. If you want to be an industry leader, on a team experiencing hyper-growth, look no further! 

Responsibilities 

• Lead the design and implementation of AI-driven detection and response strategies to automate complex security investigations.
• Operates as the primary escalation point for critical security alerts, performing deep-dive DFIR investigations, analyzing attacker techniques and vectors, proactively hunting threats, and directing incident response activities.
• Lead SecOps projects from inception to execution, ensuring effective implementation and ongoing maintenance
• Research how to leverage security telemetry and existing security solutions to improve triage and automated response.
• Work cross-functionally to refine and evolve agentic workflows that drive automated security operations.
• Coordinate investigation, containment, and other response activities with business stakeholders and groups.
• Perform hands-on forensic investigations, log reviews, cloud investigations, and root-cause analysis
• Develop incident analysis and findings reports for management, including gap identification and recommendations for improvement.

Minimum Requirements 

• 5+ years experience working in an Incident Response/Cyber Security Operations Center (in-house or outsourced) addressing, escalating, and managing security incidents and creating incident reports.
• Extensive experience in managing the lifecycle of security incidents in a global, 24/7 production environment..
• Collaborating with various cross-organizational stakeholders to drive incident response and remediation.
• Development of common runbooks for most frequent or critical incident types.
• Strong development fundamentals with experience delivering and maintaining production-grade code.
• Coding & Scripting: Hands-on programming experience (Python, Bash, etc.) with proven ability to build automation processes.
• Proven expertise in attack and mitigation methods within Cloud and SaaS environments 
• Solid understanding of system and security controls on at least two OSs (Windows, Linux / Unix, and MacOS (Advantage), including host-based forensics and experience with analyzing OS artifacts.
• Problem solver, an in-depth thinker with a growth mindset.
• Excellent communication skills and ability to work collaboratively with other teams 

Preferred Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field
• Solid understanding of LLM concepts and architectures, with hands-on experience applying them in practice.

About the Role

Join the Blockchain Backend Infrastructure team and take a position in building and maintaining Fireblocks's blockchain management platform. You'll be responsible for building cutting-edge blockchain infrastructure while implementing high-throughput, real-time scalable software solutions.

As a Blockchain Engineer, you will be instrumental in the research and integration of blockchain technologies into the Fireblocks platform. Your responsibilities will include collaborating closely with foundations and developers to gain a deep understanding of blockchain protocols and on-chain projects, then applying that knowledge to implement new features within the platform.

You will focus equally on external protocol integration patterns and internal wallet infrastructure. This role serves as a technical bridge between raw on-chain capabilities and the wallet features delivered to our customers.

What You'll Do

• Implement modern backend applications and infrastructure in a microservices architecture, using the latest technologies and development practices.
• Deep dive into the latest blockchain technology and become an expert in the fundamentals, protocols, and features of the chains we support.
• Collaborate effectively with developers, engineers, and other roles while demonstrating strong independent problem-solving abilities.
• Contribute to production reliability through on-call participation, incident response, and post-incident follow-ups.

What You'll Bring

• 5+ years of backend development experience in modern languages (Go, Python, JavaScript/TypeScript)
• 3+ years of hands-on blockchain development experience
• Experience working on high-scale distributed systems
• Understanding of microservices architecture and API design
• Knowledge of consensus mechanisms, cryptographic primitives, and distributed systems
• Strong problem-solving skills and attention to detail
• Strong verbal and written communication skills and a collaborative mindset

Preferred

• Experience building blockchain solutions for enterprise or institutional use cases
• Understanding of security best practices for smart contracts and blockchain systems
• Demonstrated ability to apply AI tools in day-to-day development
• Understanding of MPC, multi-signature wallets, or other advanced cryptographic techniques
• Bachelor's degree in Computer Science, Engineering, or a related field
• Experience with Docker, Kubernetes, and Helm

Fireblocks is hiring a Senior Backend Engineer to join the Liquidity Team in Tel Aviv-Yafo, Israel.

Connecting exchanges, OTC desks, custodians, and wallets, the Fireblocks Network settles trillions in crypto trading volume, and delivers a seamless trading experience by reducing friction, unlocking capital efficiency and mitigating counterparty risk.

The Liquidity Team is dedicated to developing Fireblocks' trading solutions. Delivering a reliable, seamless, fast, and secure trading experience for users in both crypto and fiat assets.

What You'll Do

• Be a leading backend developer of one of the newest fintech products in Fireblocks.
• Mentor and guide other developers in complex designs,Work closely with other teams, lead meaningful cross functional features.
• Connect exchanges, leading 3rd party trading agencies and other providers, to create a multi-functional trading platform.
• Develop and optimize Fireblocks' trading API to ensure a seamless and scalable experience for our users.
• Research and implement cloud-native architectures to support Fireblocks' ongoing growth and scalability.

What You'll Bring

• At least 6 years of experience in backend development, with a focus on scalable infrastructure with proficiency in Node.js and TypeScript .
• Strong understanding of system design principles, distributed systems, and scalability.
• Proven track record of designing and deploying microservices-based architectures in production environments.
• Experience with monitoring and logging frameworks (e.g., Datadog, Prometheus, Grafana, ELK stack).

DeFi & Crypto Domain Knowledge (Must-Have)

• Solid understanding of blockchain fundamentals - transaction lifecycles, block confirmations, mempool mechanics, and finality across multiple chains (e.g., EVM-compatible chains, Solana, Bitcoin).
• Hands-on familiarity with DeFi protocols and primitives - including AMMs (e.g., Uniswap, Curve), liquidity pools, yield mechanisms, and on-chain order books.

Liquidity and Exchange knowledge (Nice to have)

• Understanding of crypto liquidity concepts - market making, order routing, slippage, price impact, and the differences between CEX and DEX liquidity.

Making Security Real

As a Senior Information Security Engineer, you’ll be on the front lines of protecting the systems, users, and data at scale. This role is about turning strategy, architecture, and intent into enforced controls, effective detections, and resilient operations. You’ll work hands-on with the tools, signals, and incidents that define our real security posture.

If you believe security should be practical, measurable, and embedded into daily operations—and not just documented—we want you on the team.

What the Role Looks Like in Practice

You will be the technical anchor of our internal security posture:

• Architectural Ownership: Deploy, manage, and tune enterprise-grade security stacks (EDR, DLP, IAM, CASB, MDM) with a focus on deep integration and automation.
• The AI Frontier: Lead the charge on AI Security. You will implement and secure AI-driven workflows, ensuring LLM use is governed and protected against emerging threats such as data leakage and prompt injection.
• Proactive Defense: Build and maintain high-fidelity detections and guardrails that align with real-world attack techniques.
• Cross-Functional Synergy: Partner as a peer with Engineering, IT, and DevOps to ensure security controls are frictionless, automated, and effective.

What You’ll Bring

Technical Must-Haves:

• 7+ Years of Senior Experience: Extensive hands-on experience in InfoSec Engineering or SecOps within high-growth, cloud-native environments.
• AI Security Mastery (Required): You are ahead of the curve. You have practical experience securing AI adoption and leveraging AI-driven platforms to scale defensive capabilities.
• Deep Technical Stack: Expert-level knowledge of endpoint security (macOS/Linux), SaaS ecosystems, and Identity (Okta/OIDC).
• The Developer Mindset: Advanced scripting skills (Python is a must) to automate away manual toil and build custom security integrations.

Professional & Interpersonal Excellence:

• Strategic Communication: The ability to articulate complex technical risks as actionable business intelligence for diverse stakeholders, ensuring alignment between security objectives and business goals.
• Collaborative Influence: A track record of fostering strong partnerships with R&D and DevOps. You are a facilitator of "Secure-by-Design" principles, focused on engineering solutions rather than creating administrative bottlenecks.
• Crisis Management & Decisiveness: The capacity to maintain operational composure during high-stakes incidents, applying rigorous prioritization and risk-based analysis to drive remediation.
• Pragmatic Professionalism: A disciplined approach to balancing theoretical security ideals with the functional requirements of a high-velocity, global financial infrastructure.

• 5+ years of experience in Fullstack development, with a strong background in architecting and building complex & large web applications.
• Experience working with React & NodeJS and Typescript.
• A deep understanding of the cybersecurity world (Attack & Defense) - big advantage
• Experience with blockchain or cryptography - big advantage

• Engineer, Don’t just triage: Move beyond manual reviews to build code-driven detection logic and custom AI agents that automate vulnerability hunting, triaging and remediation.
• Security by design: Partner with R&D teams (including Infra and DevOps) to define the application-level technical guardrails for internal and external-facing products.
• Scout the Frontier: Act as an early adopter of state-of-the-art systems, evaluating and integrating cutting-edge tech from frontier security startups in AI and Cloud Runtime security.

• Promote Enterprise-Grade Security Initiatives: Engineer and scale the security strategy for Fireblocks’ entire product ecosystem, spanning both internal infrastructure and external-facing products. You will ensure code security at scale by hardening the SDLC, securing the Software Supply Chain perimeter, and designing the technical guardrails for AI adoption at both the enterprise and product levels.
• AI Solutions Builder: scale our security program using AI-driven tools. You will develop and fine-tune autonomous agents to handle complex code analysis, vulnerability hunting, and automated remediation.
• Drive Early Adoption of Frontier Tech: Act as a scout and evaluator for the world’s most innovative security startups. You’ll partner with cutting-edge vendors in emerging fields like AI Security and Cloud Runtime Security, ensuring Fireblocks remains an early adopter of state-of-the-art defensive systems.
• Scale Through Engineering: Move beyond manual reviews. You’ll manage and extend AppSec tools to eliminate false positives and build custom logic that reflects our unique codebase.
• Collaborative Engineering: Work alongside our in-house DevOps team to rapidly deploy custom security tools at an enterprise grade.

• You see a manual task and immediately think about how to automate it with a script or an LLM.
• You enjoy the challenge of securing industry-novel risks that don't have a "best practice" handbook yet.
• You value simplicity in design and believe that security should be a developer enabler, not a blocker.
• You thrive in fast-paced environments where "status quo" is a dirty word.

• Ownership: You’ll have the autonomy to propose and lead high-impact security initiatives.
• Cutting-Edge Stack: Work with the latest in AI, blockchain infrastructure, and cloud security.
• A "Rapid" Culture: Our in-house DevOps capability means your tools get deployed and scaled across the enterprise in days, not months.
• Mentorship & Growth: Collaborate with world-class experts in cryptography and cybersecurity who are committed to your professional evolution.

What you’ll do

As a Senior Software Engineer, you will play a key role in developing and maintaining Fireblocks’ Nodes Access platform, including its applications, services, and underlying systems. You'll work with a modern backend tech stack, leveraging AI, microservices, databases, Kubernetes, Ansible, CI/CD, and more to build scalable and resilient solutions.

You will be responsible for:

• Implementing an AI framework to manage and orchestrate a fleet of services and blockchain RPC nodes, and building AI agents for enhanced platform capabilities.
• Implementing modern BE applications and infrastructure in a microservices architecture, utilizing common networking protocols, object-oriented design, and cutting-edge techniques - while leveraging work with AI Agents and Skills.
• Establishing a modern CI/CD pipeline in a microservices architecture, using best practices, tools, and techniques.
• Ensuring the robustness and maintainability of our BE services and the overall application.
• Collaborating effectively with other developers, engineers and other roles, while also showcasing independent problem-solving abilities.
• Demonstrating a strong command of the blockchains ecosystem in high-load scenarios while staying updated with the latest technologies and practices.
• Dive deep into the latest blockchains, seamlessly incorporate them into our product, and become an expert in the fundamentals, protocols and features of the blockchains.
• Ensuring that Fireblocks platform remains at the forefront of blockchain technology!

What You’ll Bring

To thrive in this role, you should bring the following qualifications and experience:

• Experience with AI technologies, such as Claude Code, Cursor and experience building AI tools like Claude Skills, headless agents, context improvements (RAG), bots, MCPs, etc.
• 5+ years of experience with scalable distributed systems in GoLang, TypeScript, Python.
• 3+ years of experience in managing live and high-volume production environments with a strong focus on reliability and operational excellence.
• Ability to quickly learn and adapt to new technologies and tools.
• Experience with AI pipelines, integrations and architectures.
• Strong problem-solving and analytical skills, capable of independently exploring, proposing, and implementing well-thought-out solutions.
• Demonstrated commitment to excellence, proactiveness, and driving for success.

Bonus Skills:

• Experience with Blockchains ecosystem.
• B.Sc. in Computer Science/Engineering or equivalent knowledge.
• Experience with Cloud Infrastructures.

Join us in shaping the future of digital asset security and blockchain innovation at Fireblocks! Apply now and be part of our journey towards a brighter, decentralized world.

About the team

The KMS team sits at the very heart of Fireblocks’ platform and is a pivotal team in the company.

The team is responsible for the cryptographic backbone of the platform that secures customers’ most sensitive secrets. Every transaction signing flow. Every cosigner interaction. Every key generation ceremony. Every backup and recovery mechanism. If it touches a private key - it touches this team.

The team performs mission-critical engineering at high scale, working on systems where failure is not an option, security is existential, performance matters and correctness is everything. The work is deep, challenging, and intellectually demanding - blending modern C++ systems programming with distributed backend architecture and applied cryptography.

If you enjoy solving problems where security, scale, distributed systems, and adversarial thinking collide - this is your kind of challenge.

What You'll Do:

You’ll collaborate with backend engineers, infrastructure teams and security and cryptography researchers to ship production-grade highly secure digital signing systems, balancing cryptographic rigor, performance constraints, and distributed reliability in a domain where small mistakes have massive consequences. This includes:

• Architecting, designing and implementing distributed backend services responsible for key generation, storage and lifecycle management
• Developing high-assurance signing protocols and signing flows (utilizing MPC or external signing devices)
• Building easy to use, secure backup and disaster recovery mechanisms for cryptographic material
• Hardening systems against adversarial conditions and real-world attack vectors
• Optimizing performance-critical components that execute complex operations
• Providing visible value to customers by constant product optimisation
• Winning new customers with industry leading flexible deployments

What You'll Bring:

• Must-Have

  • 5+ years of strong C++ experience in production systems
  • 3+ years of experience in any other high-level programming language
  • Experience working inside an Agile R&D organization that delivers value fast
  • Experience building large-scale backend or distributed systems (SaaS experience strongly preferred)
  • Hands-on experience working with AI tools and the ability to effectively prompt, integrate, and build workflows around AI assistants
  • Critical AI judgment: the ability to challenge, validate, and override AI-generated output especially in security-sensitive or correctness-critical contexts
  • Experience working with SQL DBs
  • Experience working with cloud and backend technologies (e.g. Docker, K8S, AWS, Azure, DataDog, Prometheus)
  • Deep understanding of concurrency, memory management, system design, and performance optimization
  • Experience working on mission-critical or high-reliability platforms
  • A strong security engineering mindset
  • Proven capability to understand and take part in novel research: either in industry or by having any scientific academic degrees  
  
  

  Strong Advantage

  • Familiarity with the blockchain ecosystem
  • Familiarity with product components hosted on-premise 
  • Experience integrating with HSMs or Trusted Execution Environments (confidential computing) 
  • Background in either highly security-sensitive environments, Kernel development or cyber-security

About the team:

Join a global data team focused on delivering impactful insights and driving strategic initiatives across Fireblocks. As a Senior Product Analyst, you’ll play a key role in shaping data-informed decisions by applying your expertise in data modeling, analysis, and effective communication. This is an opportunity to contribute meaningfully in a high-growth, fast-paced environment, where you'll manage multiple initiatives and collaborate closely with analysts, product teams, and business stakeholders while working with advanced technologies, including AI-driven tools and systems.

What you’ll do:

• Partner with stakeholders to define clear KPIs that reflect both product health and performance as well as company goals.
• Translate business needs into actionable analytical solutions through close collaboration with cross-functional teams. 
• Work with Data Engineers and AI specialists to build scalable, consistent data models that enable deeper insights, including applications such as ranking systems, customer segmentation, and agent-driven automation. 
• Perform thorough data analysis to uncover trends, inform strategy, and deliver recommendations that enhance growth, customer experience, and operational efficiency. 
• Present insights in a clear and professional manner to support decision-making across the organization.
  
  

What you’ll bring:

• 5+ years of experience in product analytics, ideally within a product company, with the ability to independently lead end-to-end analytical initiatives.
• Strong analytical and problem-solving skills, including statistical methods, predictive modeling, and high attention to detail.
• Proven ability to build scalable data models and work cross-functionally, supporting business units with data-driven insights, including the use of AI-driven tools.
• Excellent communication skills, with the ability to present complex data insights to both technical and non-technical stakeholders.
• Experience with data visualization and reporting tools (Tableau -advantage).
• Background in fintech or financial services -advantage.
• Self-driven, proactive, and collaborative, with the ability to work independently as part of a global team.

We are looking for a Senior Engineer to build and scale security infrastructure for our Transaction Threat Protection team, protecting customer transactions in real time. 

This role sits at the intersection of high-volume transaction security and decentralized finance (DeFi), requiring an engineer who balances deep technical execution with a strong product mindset.

What You’ll Do

• Systems Architecture: Design and maintain scalable, secure cloud infrastructure capable of processing high-velocity financial data.
• Security Engineering: Develop automated systems to detect and mitigate threats within both traditional payment flows and DeFi protocols (Smart Contracts/Web3).
• AI-Augmented Development: Integrate the latest AI tools (e.g., Claude Code, Cursor, Copilot, LLM-based analysis) into your workflow to increase engineering velocity and security coverage.
• Product Ownership: Partner with product teams to ensure security features provide a seamless user experience without compromising safety.

What You’ll Bring

• Cloud & Web Expertise: Extensive experience building and deploying production-grade applications on major cloud providers (AWS/GCP/Azure).
• Full-Stack Proficiency: Strong background in modern web development frameworks and a deep understanding of web security protocols.
• Modern Tooling: High proficiency with AI-assisted coding and automated testing tools. You see AI as a core component of the modern development lifecycle.
• Product Orientation: Ability to move beyond "code-to-spec" and contribute to the product roadmap based on technical feasibility and user impact.
• [Optional] DeFi Knowledge: Experience with, or a strong technical interest in, the security challenges unique to DeFi and blockchain ecosystems.

Why This Team?

• High Stakes: You are building the primary defense for users' assets in both traditional and decentralized systems.
• Engineering Culture: We prioritize clean architecture, automated testing, and the adoption of cutting-edge development tools.
• Autonomy: You will own major components of the security stack from design through to production.

About the team

The KMS team sits at the very heart of Fireblocks’ platform and is a pivotal team in the company.

The team is responsible for the cryptographic backbone of the platform that secures customers’ most sensitive secrets. Every transaction signing flow. Every cosigner interaction. Every key generation ceremony. Every backup and recovery mechanism. If it touches a private key - it touches this team.

The team performs mission-critical engineering at high scale, working on systems where failure is not an option, security is existential, performance matters and correctness is everything. The work is deep, challenging, and intellectually demanding - blending modern C++ systems programming with distributed backend architecture and applied cryptography.

If you enjoy solving problems where security, scale, distributed systems, and adversarial thinking collide - this is your kind of challenge.

What You'll Do:

You’ll collaborate with backend engineers, infrastructure teams and security and cryptography researchers to ship production-grade highly secure digital signing systems, balancing cryptographic rigor, performance constraints, and distributed reliability in a domain where small mistakes have massive consequences. This includes:

• Architecting, designing and implementing distributed backend services responsible for key generation, storage and lifecycle management
• Developing high-assurance signing protocols and signing flows (utilizing MPC or external signing devices)
• Building secure backup and disaster recovery mechanisms for cryptographic material
• Hardening systems against adversarial conditions and real-world attack vectors
• Optimizing performance-critical components that execute complex operations

What You'll Bring:

• 7+ years of strong backend experience in production systems
• Experience building large-scale backend or distributed systems (SaaS experience strongly preferred)
• Experience working with distributed SQL DBs
• Experience working with cloud and backend technologies (e.g. Docker, K8S, AWS, Azure, DataDog, Prometheus)
• Deep understanding of concurrency, memory management, system design, and performance optimization
• Experience working on mission-critical or high-reliability platforms
• A strong security engineering mindset

Strong Advantage

• Experience with TypeScript 
•  Experience with multiple development environments, languages and paradigms
• Experience with cryptography, MPC, threshold signatures, or key management systems
• Familiarity with blockchain technologies
• Experience with confidential computing technologies
• Experience integrating with HSMs or secure enclaves
• Background in highly security-sensitive environments

Role Overview

We are seeking an experienced Incident Response leader to own and lead the company’s response to large-scale, high-impact cyber incidents. This role is responsible not only for technical response, but for cross-company crisis coordination, executive decision support, and ensuring fast, controlled mitigation across engineering, product, legal, communications, and leadership teams.

This is a leadership role for someone who has personally led complex incidents under pressure — including situations involving material business risk, customer impact, regulatory exposure, and executive visibility.

Key Responsibilities

Incident Leadership & Crisis Management

• Serve as the Incident Commander for high-severity cyber incidents, including breaches, supply-chain attacks, insider threats, and platform-wide security events.
• Lead company-wide incident response efforts, coordinating technical, operational, legal, communications, and executive stakeholders.
• Stand up and orchestrate crisis management teams during major incidents, ensuring clear ownership, decision-making, and execution under pressure.
• Drive rapid containment, eradication, and recovery while balancing business continuity, customer impact, and regulatory obligations.
• Act as the primary point of contact to executive leadership during incidents, providing clear, concise, timely, and actionable updates.

Cross-Department Coordination

• Orchestrate response activities across Security, Infrastructure / Cloud Operations, Product & Application Security
• Ensure alignment between technical response actions and business, legal, and regulatory considerations.
• Manage external parties when needed  

Preparedness & Operational Excellence

• Own and continuously improve the incident response framework, including severity definitions, escalation paths, and decision authority.
• Design and run executive-level incident simulations and tabletop exercises, including cross-functional and leadership participation.
• Ensure high-quality post-incident reviews that result in measurable improvements to controls, detection, and response readiness.
• Define and track incident response metrics (MTTD, MTTR, blast radius, decision latency).
• Track and follow-up on lessons learned and enhancements to ensure implementation and continuous improvement.

Required Experience & Qualifications

• 10+ years in cybersecurity, with significant incident response management experience.
• Proven experience leading large-scale, cross-company cyber incidents, including incidents involving:
• Multiple engineering and operational teams
• Executive leadership and board-level visibility
• Demonstrated experience acting as Incident Commander or equivalent role during major security events for at least 15 incidents in the past 5 years.
• Strong understanding of:
• Cloud and SaaS architectures
• Identity, access control, and infrastructure security
• Detection and response technologies (SIEM, EDR, cloud-native tools)
• Offensive background
• Ability to translate technical facts into business impact and risk-based decisions.

Critical Skills & Attributes

• Crisis leadership: Calm, decisive, and structured under extreme pressure.
• Authority without ego: Able to lead across departments without formal reporting lines.
• Executive communication: Clear, concise, and credible with senior leadership.
• Systems thinker: Understands how technical, human, and process failures compound during incidents.
• Bias for action: Moves quickly while maintaining discipline and documentation.
• Analytical thinking: Attention to details and ability to connect multiple dots into a concise and accurate picture.
• Previous experience at Mandiant, Sygnia, CrowdStrike, Unit 42, or similar elite IR teams
• Experience in crypto, fintech, custody, payments, or highly regulated environments
• Hands-on background in forensics, threat hunting, or security engineering

Nice to Have

• Experience in crypto, fintech, cloud infrastructure, or highly regulated environments
• Experience supporting regulatory notifications and post-incident audits
• Background in forensics, threat intelligence, or security engineering
• Familiarity with NIST, ISO 27035, or similar incident response frameworks (practical application, not checkbox compliance)

About the Role

Fireblocks is seeking a highly technical, partner-facing Integration Engineer to join our Network team. In this role, you will be the primary technical driver for onboarding partners to the Fireblocks Network and maintaining quality and product excellence with existing partners. 

You aren't just following a manual; you are a technical consultant, a troubleshooter, and a bridge builder. You will work closely with R&D, Product, and Business, ensuring that every provider integration is seamless, secure, and scalable.

What You’ll Do

• Own the Integration Lifecycle: Lead partners from initial discovery through to production go-live, serving as their dedicated technical Point of Contact.
• Act as Tier 1 R&D: Deep-dive into the code to answer complex architectural questions. You’ll debug, write code, analyze API logs, and solve technical hurdles.
• Bridge the Gap: Translate business needs into technical requirements. You’ll help partners understand how to map their existing infrastructure to our protocol.
• Collaborate Cross-Functionally: Work hand-in-hand with Product to relay feedback from the field and with Business to ensure the provider’s commercial goals are met.
• Scale the Process: Develop technical documentation, tools, and integration best practices to streamline the onboarding process and making it more intuitive.

Who You Are

• Passionate About Tech: You can discuss technical details with R&D engineers as well as explain in simple terms to customers and partners. 
• Problem Solver: You have a "builder" mindset. You are customer-focused and proactive in finding a solution or mitigation to every issue that comes your way.
• Client-Centric: You understand that your success is directly tied to the success of our partners.

Qualifications

• B.Sc. in Computer Science or equivalent
• Experience: 2+ in Software engineering (ideally in FinTech, Cyber, or Crypto).
• Tech Stack: Strong proficiency with REST APIs, JSON, Webhooks, and at least one programming language such as; Java, C#, Typescript.
• Knowledge: Familiarity with digital assets, blockchain technology, or institutional finance workflows is highly preferred.
• Communication: Exceptional English communication skills, both written and verbal.