OpenZeppelin is a smart contract security company founded in 2015 with origins in Buenos Aires. Its open-source contract libraries are the de facto standard for token and access control implementations across Ethereum and compatible chains. The firm also performs audits and sells Defender, a platform for secure contract operations, upgrades and incident response.
HQ: Buenos Aires, Argentina • Cybersecurity • Financial Services • Blockchain & Crypto • Est. 2015
Lead • 3+ years exp • Remote (Europe) • Contractor • Staff
Solidity
Cairo
Move
Cairo
OpenZeppelin Cairo
AI/ML
Anthropic SDK
Claude
Claude Code
Cursor
Anthropic
Model Context Protocol
Tokenization
Web3
Aave
Aleo
Aptos
Arbitrum
Axelar
Cardano
Chainlink
Chainlink CCIP
DeFi
Ethereum
LayerZero
OpenZeppelin
Smart Contracts
Starknet
Stellar
Tokenomics
Uniswap
Wormhole
OKX is a global cryptocurrency exchange and digital asset platform. It offers spot, margin, futures, and options trading, plus a Web3 wallet, DeFi access, and NFT features. The company has positioned itself as a broad crypto ecosystem for both beginners and advanced traders.
HQ: San Jose, United States • HQ: Dubai, United Arab Emirates • Blockchain & Crypto • Cryptocurrencies • Crypto Exchanges • 1001-5000 employees • Est. 2017
Middle • 4+ years exp • Lisbon • Remote (EMEA) • Contractor • Middle • Dutch: C1 • French: C1 • German: C1
Executive • 10+ years exp • Remote (EMEA) • Architect
≈ $140k – $307k per year (Estimated) • Executive • 10+ years exp • In office (London, United Kingdom) • Bachelor's Degree • Architect
ClearBank is a London clearing bank founded in 2015, the first new entrant to the British clearing market in more than two centuries. It provides accounts, payment scheme access and safeguarding to fintechs, building societies and other regulated firms rather than to consumers. Its cloud native infrastructure gives partners direct access to Faster Payments and other national schemes.
HQ: London, United Kingdom • Banking • Financial Services • Est. 2015
In office (London, United Kingdom) • Full-Time
TRM Labs is a blockchain intelligence and financial crime prevention platform headquartered in San Francisco, California. The company provides law enforcement agencies, government bodies, regulatory organizations, and financial institutions with tools to monitor, detect, and investigate illicit cryptocurrency transactions and digital asset fraud.
HQ: San Francisco, United States • Cybersecurity • Blockchain & Crypto • Blockchain Analytics
$115k – $150k per year • Senior • 5+ years exp • Remote (United Kingdom) • Full-Time • Senior
Maltego
Web3
TRM Labs
Ethereum
Smart Contracts
Management
Notion
Slack
$150k – $168k per year • Senior • 8+ years exp • Remote (United Kingdom) • Full-Time • Senior
Maltego
Web3
TRM Labs
Ethereum
Smart Contracts
Management
Notion
Slack
$160k – $190k per year • Staff+ • 8+ years exp • Remote (United Kingdom) • Full-Time • Staff
Move
Web3
TRM Labs
Management
Slack
Mercuryo is a global fintech company specializing in cryptocurrency-to-fiat payment infrastructure and cross-border financial services. Founded in 2018, it provides B2B and B2C solutions designed to bridge traditional finance (fiat) and decentralized ecosystems (crypto).
HQ: London, United Kingdom • Blockchain & Crypto • Crypto Exchanges • Crypto Payments • Est. 2018
$48k – $60k per year • Senior • 5+ years exp • London • Remote (United Kingdom) • Full-Time • Senior
DeFi
MetaMask
Solana
Trust Wallet
Senior • 5+ years exp • Limassol • Remote (United Kingdom, Spain, Cyprus) • Full-Time • Senior
DeFi
MetaMask
Solana
Trust Wallet
Fireblocks is a digital asset infrastructure company founded in 2018 and headquartered in New York. It provides institutional custody and transfer technology built on multi-party computation, together with a policy engine and a connected network of counterparties. Banks, exchanges, payment firms and asset managers use the platform to secure and move large volumes of tokenised value.
HQ: New York, United States • Stablecoins • Cryptocurrencies • Blockchain & Crypto • Est. 2018
≈ $89k – $225k per year (Estimated) • Senior • 7+ years exp • In office (London, United Kingdom) • Bachelor's Degree • Contractor • Senior
Node JS
TypeScript
JavaScript
Frontend
React.js
DevOps
CI/CD
Platform Engineering
Web3
Arbitrum
DeFi
Ethereum
Ethers.js
Polygon
Smart Contracts
Solana
solana-web3.js
TON
Tron
Web3.js
Modal is an AI infrastructure company headquartered in New York City and founded in 2021. It provides a serverless cloud platform featuring sub-second cold starts and instant autoscaling that enables developers to run GPU-accelerated workloads, including model inference and fine-tuning, using a Python-native SDK. The company operates a globally distributed compute network designed for AI applications and serves a diverse range of industries such as generative AI and biotechnology.
HQ: New York, United States • MLOps • LLM & Generative AI • Machine Learning • Information Technology • Hardware • Cloud Computing • AI Infrastructure • Artificial Intelligence • Est. 2021
$400k per year • Executive • In office (New York, San Francisco, United States, London, United Kingdom) • Full-Time • Architect
Chainanalysis is a leading blockchain data platform that provides intelligence, investigative tools, and compliance solutions to government agencies, financial institutions, and cryptocurrency businesses worldwide. The company specializes in analyzing public blockchain ledgers to trace digital asset transactions, helping detect, prevent, and investigate financial crime and illicit activity. By turning complex on-chain data into actionable insights, it plays a critical role in building trust, regulatory compliance, and security within the Web3 ecosystem.
New York • Tel Aviv • Seoul • Aarhus • London • Cybersecurity • Fraud Detection • Blockchain & Crypto • Blockchain Analytics
≈ $79k – $201k per year (Estimated) • Senior • Remote (United Kingdom, Denmark) • Full-Time • Senior
Java
TypeScript
Databases
Databricks
PostgreSQL
DevOps
Amazon EKS
AWS
CI/CD
GitHub Actions
Kubernetes
Terraform
GitHub
Web3
Chainalysis
Solana
Sui
TON
Analytics
ETL/ELT
State Street is a major American financial services and bank holding company headquartered in Boston, Massachusetts. As one of the world's largest custodian banks and asset managers, it provides comprehensive asset servicing, fund administration, foreign exchange, and investment management through its State Street Global Advisors division.
HQ: Boston, United States • Financial Services • Banking • Asset Management • 1001-5000 employees
≈ $93k – $205k per year (Estimated) • Executive • 10+ years exp • Remote/Hybrid (London, Edinburgh, United Kingdom) • Bachelor's Degree • Full-Time • Architect
AWS
Kubernetes
Cybersecurity
Threat Modeling
Web3
Smart Contracts
Corda
DeFi
Ethereum
Hyperledger Fabric
Polygon
Solana
CoinDesk is a prominent news, research, and media platform that provides comprehensive coverage of cryptocurrencies, digital assets, and blockchain technology. The publication delivers breaking news, market data, regulatory analysis, and institutional insights to crypto investors, technology developers, and industry professionals globally. Beyond digital publishing, the organization hosts major industry conferences - most notably Consensus - and produces benchmark crypto price indices and market indicators used across the financial sector.
HQ: New York, United States • DeFi • Cryptocurrencies • Blockchain & Crypto
$100k – $145k per year • Senior • 5+ years exp • In office (New York, United States, London, United Kingdom) • PhD • Full-Time • Senior
Python
SQL
Web3
Aave
DeFi
Liquid Staking
Morpho
Staking
Uniswap
Bullish is a global digital asset platform that provides regulated market infrastructure, institutional-grade cryptocurrency exchange services, and financial information tools. The company combines a central limit order book with automated market-making technology to deliver deep liquidity and compliance-focused spot and derivatives trading for institutional investors. Additionally, the firm owns major media and data assets, including CoinDesk, expanding its presence across digital asset news, indices, and industry events.
New York • London • Frankfurt am Main • Financial Services • Blockchain & Crypto • Crypto Exchanges • 501-1000 employees
$100k – $145k per year • Senior • 5+ years exp • In office (New York, United States, London, United Kingdom) • Full-Time • Senior
Python
SQL
Web3
Aave
DeFi
Liquid Staking
Morpho
Staking
Uniswap
Blockchain Infrastructure • Blockchain & Crypto
Remote (United Kingdom) • Full-Time
Bitcoin
Ethereum
Rollup
Starknet
Zk-STARKs
Wintermute is one of the largest algorithmic trading companies in digital assets. We provide liquidity algorithmically across all major cryptocurrency exchanges and trading platforms, a broad range of OTC trading solutions as well as support high profile blockchain projects and traditional financial institutions moving into crypto. Wintermute is not just a trading company, it is one the most prominent and influential players in the digital asset markets: we are connected and partnering with all major players in the industry, we actively participate in the development of the blockchain ecosystem through investments, partnerships, and incubation of projects.
HQ: London, United Kingdom • DeFi • Cryptocurrencies • Blockchain & Crypto
In office (London, United Kingdom) • Full-Time
Go
Python
Rust
Solidity
DevOps
Git
Web3
DeFi
Foundry
Smart Contracts
Ethereum
