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Blockchain Security Engineer Jobs in California (NOW HIRING)

... complex blockchain architectures into compliant, enterprise-grade risk frameworks. * Governance ... AI Security Frameworks: Lead the strategic security response for AI initiatives--from developer ...

Staff Site Reliability Engineer

San Francisco, CA · On-site +1

$67.25 - $89.25/hr

... and security teams, you'll build AI-powered tooling and automation that improves operational excellence, accelerates developer productivity, and enables the rapid delivery of new blockchain ...

Staff Site Reliability Engineer

San Francisco, CA · On-site +1

$67.25 - $89.25/hr

... and security teams, you'll build AI-powered tooling and automation that improves operational excellence, accelerates developer productivity, and enables the rapid delivery of new blockchain ...

Software Engineer, Consensus - Anza Who We Are Anza is a Solana R&D lab pushing the boundaries of ... Here, your work will have a direct impact on the security and scalability of blockchain technology ...

... security of production systems that serve users globally-working at the intersection of blockchain ... Partner with engineering teams to embed reliability, scalability, and security best practices into ...

Senior Platform Engineer

San Francisco, CA · On-site +1

$190K - $225K/yr

... security of production systems that serve users globally-working at the intersection of blockchain ... Partner with engineering teams to embed reliability, scalability, and security best practices into ...

Senior Frontend Engineer

San Francisco, CA · On-site

$144K - $198K/yr

Job Summary : Halliday is a blockchain company and product lab focused on creating a unified ... Identify and implement improvements to enhance performance, accessibility, security, and code ...

Front End Engineer

San Francisco, CA · On-site

$150K - $190K/yr

This is an opportunity to work on cutting edge technology that makes blockchain accessible ... Continuously identify and implement improvements to enhance our platform's performance, security ...

Showing results 41-60

Blockchain Security Engineer information

What is the difference between Blockchain Security Engineer vs Blockchain Developer?

AspectBlockchain Security EngineerBlockchain Developer
Primary FocusSecuring blockchain networks, identifying vulnerabilities, implementing security protocolsDesigning, coding, and deploying blockchain applications and smart contracts
Required SkillsCryptography, security protocols, vulnerability assessment, blockchain architectureSmart contract development, programming languages (Solidity, JavaScript), blockchain frameworks
CertificationsCertified Blockchain Security Professional, CISSP, CEHNone specific, but blockchain development certifications are common
Work EnvironmentSecurity teams, blockchain firms, fintech companiesDevelopment teams, blockchain startups, tech companies

While both roles work within the blockchain industry, Blockchain Security Engineers focus on safeguarding blockchain systems from threats, whereas Blockchain Developers concentrate on creating blockchain applications and smart contracts. Understanding these differences helps in choosing the right career path or hiring the right professional.

Infographic showing various Blockchain Security Engineer job openings in California as of August 2026, with employment types broken down into 82% Full Time, 14% Part Time, and 4% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution.

US CISO

Palo Alto, CA • On-site

Socket.dev
Network Security • 1 - 10 employees

Other

Re-posted 9 days ago


Job description

About Nu

Nu is the leading digital bank in Latin America, serving 135 million customers across Brazil, Mexico, and Colombia. The company has been leading an industry transformation by leveraging data and proprietary technology to develop innovative products and services. Guided by its mission to fight complexity and empower people, Nu caters to customers’ complete financial journey, promoting financial access and advancement with responsible lending and transparency. The company is powered by an efficient and scalable business model that combines low cost to serve with growing returns. Nu’s impact has been recognized in multiple awards, including Time 100 Most Influential Companies, Fast Company’s Most Innovative Companies, and Forbes World’s Best Banks. Visit our Institutional Page


About the team

As Nubank expands its footprint into the US, we are seeking a visionary, highly specialized US Chief Information Security Officer (CISO).


This is not a traditional operational CISO role. You will serve as the executive pillar for Nubank’s US strategy, bridging the gap between traditional financial regulations and modern, hyper-scalable crypto and AI technology platforms. You will act as the point of accountability for US regulatory bodies, lead governance transformations, and oversee critical cross-functional security domain leadership.


We are looking for a security leader who balances deep traditional banking compliance expertise with a forward-looking understanding of cryptocurrency protocols and artificial intelligence security.


About the role

As the US CISO, you will architect, establish, and operationalize a unified US security and compliance posture. You will protect customer trust, satisfy strict US regulatory frameworks (e.g., OCC compliance), and secure frontier technology initiatives ensuring Nubank’s platform remains resilient, future-proof, and compliant as we scale globally.


Key responsibilities and Expectations

  • US Regulatory & Regulatory Agency Liaison: Serve as the primary US security authority and point of contact for regulators (e.g. OCC). Oversee all mandatory statutory disclosures, including financial and IBFR background reviews.


  • Crypto & Web3 Product Defense: Partner with crypto product and infrastructure teams to secure future-proof financial technologies, translating complex blockchain architectures into compliant, enterprise-grade risk frameworks.


  • Governance, Risk, and Compliance (GRC) Transformation: Uplevel Nubank’s GRC program to support multi-geography scaling.


  • AI Security Frameworks: Lead the strategic security response for AI initiatives—from developer workflows and engineering toolsets to model integrity and deployment risks.


  • Insider Threat Program Development: Design, build, and deploy an end-to-end enterprise Insider Threat program across first and second lines of defense in close partnership with Risk and Legal teams.



Qualifications
Professional Experience & Education

  • Executive Leadership Experience: 15+ years in Information Security, with significant experience operating at an executive, director, or CISO level within FinTech, Banking, or Digital Assets.


  • US Financial Regulatory Expertise: Deep hands-on experience navigating US regulatory environments, specifically working with the OCC, statutory disclosure processes, and financial institution compliance.


  • Cryptocurrency & Blockchain Security: Demonstrated domain expertise in cryptocurrency security, decentralized finance, or digital asset platforms. Experience at leading crypto-native institutions or hyper-growth FinTechs is highly valued.


  • AI Security Strategy: Familiarity with modern AI security risks, LLM integrations, safe code generation tools, and model security.


  • GRC Upleveling: Proven track record of rebuilding or scaling GRC frameworks within complex, multi-national organizations.


  • Executive Communication: Exceptional communication skills needed to interface effectively with regulatory examiners, executive leadership, and board members.



Competencies & Attributes:

  • Fluency in English is required; Portuguese and/or Spanish are a plus.


  • Strong people leadership at scale, including developing managers and leading teams of differing maturity through change and ambiguity.


  • Excellent stakeholder management and communication, with maturity in negotiation and conflict resolution across senior cross-functional partners.


  • A pragmatic, hybrid profile, balanced across people leadership, product sensibility, and technical depth rather than weighted to any single one. A genuine product mindset focused on customer and agent outcomes, with the technical depth to raise the bar in architectural discussions.



Our recruitment process may involve the use of artificial intelligence–enabled tools, such as automated interview transcription and analysis, to support the evaluation process. Artificial intelligence is not used to make final hiring decisions; all decisions are made by human reviewers.

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