Lead Security Analyst, Third Party Security

Status
Washington, USA
Full time
Remote
Compensation is not specified
Role
Security Engineer
Description

Company Overview:

Circle is a cutting-edge financial technology firm revolutionizing the digital economy landscape, enabling seamless value transfers globally at lower costs and with instantaneous speed. Our mission is to enhance global economic prosperity and promote financial inclusion by introducing pioneering payment solutions and markets through our infrastructure, which includes USDC, a blockchain-based dollar.

What We Offer:

Circle places a high value on transparency and consistency in all our operations. Our team is expanding across some of the world's most robust jurisdictions, necessitating a focus on speed and efficiency. Employees at Circle uphold our key values of Multistakeholder, Mindfulness, Driven by Excellence, and High Integrity in a remote work setting that promotes teamwork and innovation through a flexible and diverse environment.

Job Responsibilities:

As a valuable team member, you will be responsible for spearheading the design and execution of a comprehensive blockchain security assessment program. Your main tasks will include conducting security risk assessments of blockchains, offering cybersecurity expertise and risk mitigation strategies to various enterprise teams.

Key Duties:

  • Utilize your technical expertise in various blockchains like Ethereum, Bitcoin, Solana, etc., to conduct blockchain security assessments.
  • Evaluate threat intelligence concerning diverse blockchains and provide impact assessments.
  • Collaborate with blockchain engineering teams, furnishing security recommendations.
  • Develop and refine Circle's blockchain assessment program.
  • Assess the security aspects of a designated group of Circle's third-party entities and suggest and monitor risk mitigation approaches.
  • Mentor and guide junior team members.
  • Present metrics and reports.

Required Qualifications:

  • Bachelor's degree or equivalent in computer science, computer engineering, cybersecurity, or related field.
  • Proficient understanding of Ethereum, Bitcoin, Solana, and the ability to comprehend source code, like Python, Rust.
  • 2+ years of experience in blockchain security and 7+ years in cybersecurity, technology, or engineering fields.
  • Skilled in communicating security risks to both technical and non-technical teams.
  • Capable of evaluating technical controls to ascertain their effectiveness.
  • Exposure to financial services or other highly regulated industries.
  • Self-driven and adaptable to ambiguity.
  • Solution-oriented and able to propose improvements to existing processes.
  • Relevant certifications (e.g., CISSP, CTPRP, CISA, CISM) preferred but not mandatory.

Additional Details:

  • This role may qualify for day-one PERM sponsorship for eligible candidates.
  • Compensation ranges consider factors like expertise, qualifications, and organizational needs.
  • Base Pay Range: $130,000-$170,000, with an Annual Bonus Target of 15%.
  • Additional perks include Equity, Benefits (medical, dental, vision, 401(k)), discretionary vacation, 10 days of paid sick leave per year, and 11 paid holidays annually in the U.S.
  • Circle is an equal opportunity employer that values diversity and inclusion. Discrimination based on various factors is not practiced. We may participate in the E-Verify Program, where required by law.
Skills Required
Avatar
Circle
Company size
Not specified
Location
United States
Description
Not specified
Status

More Full-time Jobs

Show more

AI Product Lead

Full time
Remote
AI Product Lead — Portfolio Companies
Sirex Portfolio Companies
Salary: $160,000 – $225,000 USD base + equity
Location: Remote-first
About the role
Own product strategy and roadmap for AI-native products inside our portfolio (autonomous agents, AI devtools, RWA platforms). Bridge technical founders and go-to-market.
What you’ll do
•Define product vision and prioritization for AI agent platforms
•Work directly with engineering on agent architecture and user experience
•Run user research and go-to-market experiments
•Help portfolio companies ship from MVP to product-market fit
Requirements
•4+ years product experience (ideally in AI or Web3)
•Strong technical understanding of LLMs and agents
•Previous startup or VC portfolio experience
•Data-driven and execution-focused
What we offer
•Work across multiple exciting AI/Web3 companies
•Huge ownership and equity upside
•Direct mentorship from Sirex partners
Payment in Crypto
13,333-18,750
Monthly
See details

On-Chain AI Analyst / Data Scientist

Full time
Remote
On-Chain AI Analyst / Data Scientist
Sirex (Fund + Portfolio)
Salary: $145,000 – $200,000 USD base + equity
Location: Remote-first
About the role
Turn on-chain data into alpha for AI agents, DeFi protocols and RWA investments. Build dashboards, anomaly detection and predictive models using real-time blockchain data.
What you’ll do
•Develop on-chain analytics pipelines (The Graph, Dune, custom indexers)
•Build AI models that predict protocol TVL, agent activity and RWA flows
•Create internal tools for investment thesis validation
•Research and publish insights on autonomous agent behavior on-chain
Requirements
•Strong Python + SQL + data science background
•Deep experience with blockchain data (Dune, Flipside, custom subgraphs)
•Familiarity with LLMs and agent systems
•Previous crypto research or trading experience
What we offer
•Direct influence on fund investment decisions
•Access to proprietary on-chain datasets
•Fast-track to senior research roles
Payment in Crypto
12,083-16,667
Monthly
See details

RWA & Tokenization Protocol Engineer

Full time
Remote
Sirex Portfolio Companies
Salary: $155,000 – $220,000 USD base + equity + token package
Location: Remote-first
About the role
Build real-world asset tokenization protocols and compliant on-chain infrastructure for our RWA portfolio companies (real estate, carbon credits, invoices, treasuries).
What you’ll do
•Design and audit upgradeable smart contracts for RWA issuance, custody and compliance
•Implement cross-chain bridging, oracle integration and KYC/AML hooks
•Build tokenization SDKs and developer tools
•Work on regulatory-compliant mechanisms (ERC-3643, ERC-1400 style)
•Ship production protocols on Ethereum, Polygon, Arbitrum and Solana
Requirements
•4+ years Solidity + security experience (OpenZeppelin, audits)
•Deep knowledge of token standards and RWA primitives
•Experience with legal/compliance wrappers — strong plus
•Rust or Move experience is a bonus
What we offer
•Work on protocols that bring trillions in real-world value on-chain
•Direct collaboration with legal and regulatory partners
•High upside through protocol ownership and tokens
Payment in Crypto
12,917-18,333
Monthly
See details

Senior Rust Engineer — Decentralized AI Compute & GPU Orchestration

Full time
Remote
Senior Rust Engineer — Decentralized AI Compute & GPU Orchestration
Sirex Portfolio Companies
Salary: $170,000 – $240,000 USD base + meaningful equity + token package
Location: Remote-first (any timezone)
About the role
We’re building the next layer of decentralized compute for AI agents — GPU orchestration, libp2p networking, verifiable execution and on-chain coordination. Join one of our high-conviction portfolio companies or work directly with the Sirex infra team.
What you’ll do
•Design and ship production Rust services for distributed GPU clusters and agent orchestration
•Build libp2p + IPFS-based peer discovery and data exchange layers
•Implement verifiable compute primitives (zkML, TEE, or on-chain proofs)
•Optimize for cost, latency and fault tolerance at scale
•Collaborate with AI teams on autonomous agent deployment
Requirements
•4+ years Rust (production experience mandatory)
•Strong background in distributed systems, networking or blockchain infra
•Experience with libp2p, IPFS, GPU compute (CUDA/ROCm) or TEEs — big plus
•Deep understanding of AI agent workloads
What we offer
•Direct impact on core infrastructure that powers multiple portfolio companies
•Top-tier equity + token upside
•Fast growth to Staff/Principal level
•Work with the best AI + crypto teams in the space
Payment in Crypto
14,167-20,000
Monthly
See details

🚀 Hiring Solana Developers – Pump.fun

Montana City, USA
Montana City, USA
Full time
Remote
Solana Developer Needed – Pump.fun Style Platform (Starter Code Available)
 
Hi,
 
I’m reaching out from Valiant Solution LLC. We’re currently working with a U.S.-based client who is an experienced crypto professional and we’re looking for a skilled Solana developer to help build a platform similar to Pump.fun.
 
We already have a basic codebase from GitHub that the developer can start from, so the project will mainly involve customizing, improving, and completing the functionality rather than building everything from scratch.
 
Key requirements:
• Experience with Solana smart contracts (Rust / Anchor)
• Knowledge of token launch mechanics and bonding curves
• Experience with Solana Web3 integrations
• Ability to work with an existing codebase and extend it
 
If this sounds interesting, please reply with:
• Your Solana development experience
• Links to relevant projects or GitHub
• Your availability for a quick discussion
 
Looking forward to connecting.
 
Best regards,
Valiant Solution LLC
Payment in Crypto
13,000-20,000
Monthly
See details