Senior Software Engineer, Platform Security

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. Fireblocks’ mission is to enable every business to easily and securely access digital assets and cryptocurrencies. In order to do that, we strongly believe our workforce should be as diverse as our clients, and this is why we embrace diversity and inclusion in all its forms. Please see our candidate privacy policy here . Create a Job Alert Interested in building your career at Fireblocks? Get future opportunities sent straight to your email. Create Alert Fireblocks is the world’s most trusted digital asset and stablecoin infrastructure company, empowering organizations of all sizes to build, manage and grow their business on the blockchain. [email protected] X LinkedIn Fireblocks © 2026 All Rights Reserved Wallets Treasury management Wallet-as-a-service Embedded wallets Wallet connectors Fireblocks Trust Company Payments Network for Payments Operations Automation AI suite Security & governance Security Policy Engine DeFi security suite Financial applications Tokenization Earn Staking Off Exchange Reconciliation & compliance Compliance integrations COR Compliance Solutions Digital asset infrastructure Stablecoin infrastructure Agentic infrastructure Industries Trading firms Fintechs & exchanges Payments Financial institutions Web3 Ecosystem Partners Professional Services Support Flexible deployment Blockchain Integrations Supported Assets Developer Documentation API Reference Status API Changelog Help Center Learn Blog Customer stories Reports and guides Webinars Fireblocks academy Glossary Company Executive team Culture and careers Spark Pricing Brand Kit Bug bounty Login Privacy Policy Cookie Policy Cookie Settings Terms of Use Fireblocks Regulated Entities Close Ready for a deeper dive? Talk to an expert Find out how Fireblocks helps your digital asset business to grow fast and stay secure.

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