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
≈ $109k – $243k per year (Estimated) • Lead • 3+ years exp • Remote (Argentina) • Contractor • Principal
Rust
Solidity
Cairo
Move
Cairo
OpenZeppelin Cairo
AI/ML
Anthropic SDK
Claude
Claude Code
Cursor
Anthropic
Model Context Protocol
Web3
Aave
Anchor
Aptos
Arbitrum
DeFi
Ethereum
OpenZeppelin
Smart Contracts
Solana
Starknet
Stellar
Token Standards
Uniswap
Remote • Contractor • English: C1
Solidity
Cairo
Go
Move
Rust
Cairo
OpenZeppelin Cairo
Solidity
Certora
Echidna
Halmos
Cybersecurity
Threat Modeling
Web3
Aave
DeFi
Ethereum
OpenZeppelin
Smart Contracts
Uniswap
Aptos
Cosmos
Cosmos SDK
Foundry
Solana
Starknet
Stellar
Sui
Chainlink Labs is the primary development organization behind the Chainlink network, an industry-standard decentralized oracle platform. The company focuses on creating secure, reliable infrastructure that enables smart contracts to connect with real-world data, off-chain APIs, and various cross-chain systems. By providing critical solutions for data connectivity, tokenization, and interoperability, they help bridge the gap between traditional financial markets and the decentralized digital economy.
HQ: San Francisco, United States • Blockchain & Crypto • Web3 & dApps • Blockchain Infrastructure • Est. 2019
Lead • 5+ years exp • Remote (United States) • Full-Time • Principal
AI Agents
Web3
Aave
Chainlink
DeFi
GMX
Lido
Smart Contracts
≈ $144k – $239k per year (Estimated) • Senior • 6+ years exp • Remote (United States) • Bachelor's Degree • Full-Time • Senior
Go
Move
Rust
Solidity
TypeScript
Databases
PostgreSQL
DevOps
AWS
Terraform
Web3
Aave
Avalanche
Chainlink
DeFi
Ethereum
GMX
Lido
Polygon
Smart Contracts
Solana
≈ $127k – $255k per year (Estimated) • Remote (United States) • Full-Time
Go
JavaScript
Move
Rust
Solidity
TypeScript
Frontend
Astro
Docusaurus
React.js
DevOps
Git
Web3
Aave
Chainlink
DeFi
GMX
Lido
Smart Contracts
QA
Swagger
Treasure Financial is a corporate treasury management platform designed to help businesses earn higher yields on their idle cash reserves. It automates cash management by seamlessly routing company funds into safe, high-yielding liquid assets like U.S. Treasury bills and money market funds. By offering enterprise-grade security and real-time visibility, the platform enables finance teams to maximize interest income while keeping operational liquidity easily accessible.
HQ: New York, United States • Blockchain & Crypto • Stablecoins • Crypto Payments • Est. 2021
≈ $168k – $314k per year (Estimated) • Equity • Staff+ • 10+ years exp • Remote (United States, Puerto Rico) • Full-Time • Staff
Node JS
Solidity
JavaScript
AI/ML
AI Agents
Web3
Foundry
Hardhat
Smart Contracts
Solana
Arbitrum
Ethereum
Polygon
≈ $170k – $319k per year (Estimated) • Equity • Staff+ • 10+ years exp • Remote (United States, Puerto Rico) • Full-Time • Staff
Node JS
Rust
JavaScript
Web3
Smart Contracts
Solana
≈ $165k – $309k per year (Estimated) • Equity • Staff+ • 10+ years exp • Remote (United States, Puerto Rico) • Full-Time • Staff
Node JS
Solidity
JavaScript
Web3
Foundry
Hardhat
Smart Contracts
Solana
Arbitrum
Ethereum
Polygon
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
Parity Technologies is a core Web3 and blockchain infrastructure development firm best known for building foundational technologies for the Polkadot ecosystem. Founded in 2015 by Ethereum co-founder Gavin Wood and Jutta Steiner, the company initially developed Parity Ethereum before pivoting to pioneer multi-chain interoperability. Parity created Substrate, a modular open-source framework that allows developers to build custom blockchains, and spearheaded the technical development of Polkadot - a decentralized protocol connecting heterogeneous blockchain networks.
Berlin • Blockchain & Crypto • Web3 & dApps • Blockchain Infrastructure
≈ $113k – $230k per year (Estimated) • Senior • Remote (Germany) • Contractor • Senior
Rust
AI/ML
Anomaly Detection
Cybersecurity
Threat Modeling
Web3
Polkadot
Smart Contracts
≈ $81k – $179k per year (Estimated) • Senior • Remote (Germany) • Full-Time • Senior
Rust
AI/ML
Anomaly Detection
Cybersecurity
Threat Modeling
Web3
Polkadot
Smart Contracts
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
Hong Kong • Remote (Hong Kong) • Visa sponsorship • Full-Time
JavaScript
Kotlin
Lua
Objective-C
Swift
Dart
AI/ML
Claude
Claude Code
OpenAI Codex
Frontend
React.js
Mobile
Flutter
React Native
Web3
DeFi
NFT
Smart Contracts
Token Standards
≈ $167k – $366k per year (Estimated) • Executive • 10+ years exp • Singapore • Remote (Singapore) • Visa sponsorship • Full-Time • Architect
Dart
JavaScript
Frontend
React.js
Mobile
Flutter
React Native
Web3
DeFi
Account Abstraction
NFT
Smart Contracts
Token Standards
CertiK is a blockchain security company that specializes in auditing smart contracts and blockchain protocols. It offers security audits monitoring tools and risk assessment services to help projects identify vulnerabilities and improve the safety of decentralized applications and digital assets.
New York • Shenzhen • Dubai • San Francisco • Cybersecurity • Blockchain & Crypto • Smart Contracts & Security
≈ $154k – $339k per year (Estimated) • Executive • Hong Kong • Remote (United States, Hong Kong) • Full-Time • Architect
Verified live · 8 hours ago
2 months ago
Web3 BD
Middle • 3+ years exp • Remote (United States) • Full-Time • Middle
≈ $89k – $182k per year (Estimated) • Middle • 3+ years exp • Remote (United States) • Full-Time • Middle
Founded in June of 2012, Coinbase is a digital currency wallet and platform where merchants and consumers can transact with new digital currencies like bitcoin, ethereum, and litecoin. Our vision is to bring more innovation, efficiency, and equality of opportunity to the world by building an open financial system. Our first step on that journey is making digital currency accessible and approachable for everyone.
HQ: San Francisco, United States • Blockchain & Crypto • Cryptocurrencies • Crypto Exchanges • 1001-5000 employees • Est. 2012
≈ $80k – $186k per year (Estimated) • Junior • 2+ years exp • Remote (Canada) • Contractor • Junior
Go
Solidity
AI/ML
Human-in-the-Loop
Web3
Ethereum
Smart Contracts
≈ $146k – $264k per year (Estimated) • Senior • 5+ years exp • Remote (United States) • Contractor • Senior
Go
Solidity
Web3
DeFi
Ethereum
Smart Contracts
≈ $148k – $267k per year (Estimated) • Senior • 5+ years exp • Remote (United States) • Contractor • Senior
Go
Solidity
Web3
Ethereum
Smart Contracts
Solana
As a growing enterprise software company, Hashgraph is building the future of finance through products and solutions developed with Hedera technology.
Singapore • Financial Services • Branding • Blockchain & Crypto
≈ $32k – $65k per year (Estimated) • Senior • 5+ years exp • Remote (India, United States) • Full-Time • Senior
Tokenization
Web3
Hedera
Smart Contracts
Blockstream is a leading blockchain technology company founded in 2014 by cryptographers and Bitcoin developers, including CEO Adam Back. The company focuses on developing infrastructure, tools, and sidechain technology - such as the Liquid Network and Lightning Network implementations - to expand Bitcoin's scalability, privacy, and functionality. Its offerings range from enterprise-grade financial solutions and data feeds to consumer products like the Blockstream Jade hardware wallet and non-custodial mobile app.
Zurich • Menlo Park • Lugano • Geneva • Blockchain & Crypto • Cryptocurrencies • Blockchain Infrastructure
≈ $101k – $243k per year (Estimated) • Staff+ • 5+ years exp • Zurich • Remote (Switzerland) • Full-Time • Architect • German
Java
Python
Rust
Solidity
DevOps
AWS
Azure
CI/CD
GCP
Platform Engineering
Docker
Kubernetes
Web3
Bitcoin
DeFi
Ethereum
Layer 2
Smart Contracts
≈ $60k – $155k per year (Estimated) • Junior • 5+ years exp • Zurich • Remote (Switzerland) • Full-Time • Architect • German
Java
Python
Rust
Solidity
DevOps
AWS
Azure
CI/CD
GCP
Platform Engineering
Docker
Kubernetes
Web3
Bitcoin
DeFi
Ethereum
Layer 2
Smart Contracts
Injective is a financial blockchain infrastructure developer headquartered in New York City, United States, and founded in 2018. The company develops a layer 1 blockchain protocol optimized for decentralized finance applications, including perpetual swaps, spot trading, and asset tokenization. It operates as an open-source ecosystem serving institutional clients, developers, and global financial markets through its interoperable network and plug-and-play modules.
HQ: New York, United States • Financial AI • Artificial Intelligence • Capital Markets • Financial Services • Asset Tokenization • DeFi • Blockchain & Crypto • Blockchain Infrastructure • Est. 2018
≈ $83k – $170k per year (Estimated) • Middle • 3+ years exp • Remote (Europe, South America) • Full-Time • Middle
Cosmos
DeFi
Ethereum
Injective
Smart Contracts
Solana
Design
Adobe After Effects
Adobe Photoshop
Figma
≈ $73k – $222k per year (Estimated) • Junior • 2+ years exp • New York • Remote (United States) • Full-Time • Junior
Node JS
TypeScript
JavaScript
Frontend
React.js
Mobile
React Native
DevOps
gRPC
Rest API
Web3
Cosmos
DeFi
Ethereum
Injective
Smart Contracts
Solana
≈ $57k – $136k per year (Estimated) • Middle • 4+ years exp • Remote (Europe) • Full-Time • Middle
TypeScript
DevOps
CI/CD
Docker
gRPC
Kubernetes
WebSockets
Web3
Cosmos
DeFi
Ethereum
Injective
MetaMask
Smart Contracts
Solana
QA
Playwright
Pytest
Kimber is an architecture-led AI engineering company based in Dublin, Ireland that partners with startups and growing companies to architect, build and scale intelligent software. They provide end-to-end services including AI-native applications (RAG, agents, model orchestration), multi-tenant SaaS platforms, data & AI infrastructure (pipelines, feature stores, model serving), and platform modernisation from legacy to cloud-native. Kimber offers a product called KimberCloud and leverages AWS Premier Tier capabilities; provides observability, autoscaling, and production-focused engineering with a six-phase architecture-led delivery process.
Cloud Computing • Software • Artificial Intelligence • Est. 2024
≈ $101k – $187k per year (Estimated) • Middle • 4+ years exp • United States • Remote (United States) • Full-Time • Middle
Solidity
Web3
DeFi
Smart Contracts
Wealthsimple is a Canadian financial services company headquartered in Toronto and founded in 2014. The firm provides a comprehensive digital platform for automated investing, commission-free stock and ETF trading, cryptocurrency exchange services, and high-interest chequing accounts. Operating primarily within the Canadian market, the company serves over four million clients and manages billions in assets through its suite of personal finance and wealth management tools.
HQ: Toronto, Canada • Asset Management • Crypto Exchanges • Blockchain & Crypto • Personal Finance • Wealth Management • Financial Services • FinTech • 1001-5000 employees • Est. 2014
$109k – $136k per year • Senior • Remote (Canada, United States) • Full-Time • Senior
Java
Kotlin
Python
Ruby
JavaScript
Ruby
Ruby on Rails
Frontend
React.js
Mobile
React Native
Web3
DeFi
Ethereum
Ethers.js
Layer 2
Smart Contracts
Web3.js
OP Labs PBC is a software development company that contributes to the Optimism protocol, a layer two blockchain solution designed to scale the Ethereum network. The organization focuses on technology that enables faster and more scalable smart contract transactions while supporting mechanisms for funding public goods.
New York • Cryptocurrencies • Blockchain & Crypto
≈ $153k – $254k per year (Estimated) • Equity • Senior • New York • Remote (United States) • Visa sponsorship • Bachelor's Degree • Senior
Rust
Solidity
Web3
Account Abstraction
Ethereum
Layer 2
OP Stack
Optimism
Smart Contracts
Uniswap
≈ $100k – $243k per year (Estimated) • Senior • Remote • Full-Time • Senior
Rust
Solidity
Web3
Account Abstraction
Ethereum
Layer 2
OP Stack
Optimism
Smart Contracts
Uniswap
≈ $141k – $271k per year (Estimated) • Staff+ • 5+ years exp • New York • Remote (United States) • Full-Time • Architect
AWS
Web3
Ethereum
Layer 2
OP Stack
Optimism
Smart Contracts
Uniswap
At Blue Language Labs we are building the foundational trust layer for the AI-driven economy. By transforming digital agreements into self-enforcing, verifiable contracts, we enable machines to transact, negotiate, and collaborate with certainty. Our open protocol unlocks seamless, global commerce powered by AI-secure, scalable, and built for the future.
Artificial Intelligence • Blockchain & Crypto • Smart Contracts & Security
$129k – $161k per year • Staff+ • 7+ years exp • Remote (Poland) • Full-Time • Staff • Polish: C1
Node JS
TypeScript
JavaScript
Databases
PostgreSQL
AI/ML
AI Agents
Frontend
React.js
DevOps
AWS
AWS Lambda
CloudFormation
Amazon CloudWatch
Amazon EventBridge
API Gateway
IAM
Web3
Smart Contracts
$129k – $161k per year • Staff+ • 6+ years exp • Remote (Poland) • PhD • Full-Time • Staff
Node JS
TypeScript
JavaScript
Databases
PostgreSQL
Redis
Frontend
React.js
DevOps
AWS
AWS Lambda
CI/CD
CloudFormation
Amazon S3
IAM
Cybersecurity
Least Privilege
Web3
Smart Contracts
MLabs is a global software engineering consultancy specializing in high-assurance software engineering, formal verification, and mission-critical systems. Founded in 2018, the company focuses on functional programming languages like Haskell and Rust to build secure, high-performance infrastructure for blockchain, Web3, fintech, and AI projects.
HQ: London, United Kingdom • Information Technology • Blockchain & Crypto • Software
$120k – $150k per year • Senior • 8+ years exp • Remote (Europe) • Visa sponsorship • Master's Degree • Full-Time • Senior
Node JS
TypeScript
JavaScript
C++
Rust
Node JS
Prisma
Winston
Databases
PostgreSQL
Redis
Apache Kafka
Frontend
React.js
DevOps
CI/CD
Rest API
WebSockets
Datadog
Prometheus
Web3
Smart Contracts
Ethereum
Ethers.js
$120k – $200k per year • Senior • 8+ years exp • Poland • Remote (Poland) • Full-Time • Senior
C++
Rust
Databases
Apache Kafka
PostgreSQL
RabbitMQ
Redis
DevOps
AWS
Azure
Docker
GCP
Kubernetes
WebSockets
Web3
DeFi
Smart Contracts
$120k – $150k per year • Senior • 8+ years exp • Germany • Remote (Germany) • Full-Time • Senior
Node JS
TypeScript
JavaScript
C++
Rust
Node JS
Prisma
Winston
Databases
PostgreSQL
Redis
Apache Kafka
Frontend
React.js
DevOps
CI/CD
Rest API
WebSockets
Datadog
Prometheus
Web3
Smart Contracts
Ethereum
Ethers.js
Anza is a software engineering and R&D firm dedicated to building core infrastructure, protocols, and developer tools for the Solana blockchain ecosystem. Founded in 2024 by executives and core engineers from Solana Labs, the firm focuses on enhancing network performance, reliability, and decentralization. Its major contributions include the Agave validator client - a major client fork designed to optimize block propagation and reduce latency - alongside core SDKs, token extension protocols, and infrastructure tooling for decentralized application developers.
HQ: San Francisco, United States • Blockchain & Crypto • 201-500 employees • Est. 2024
$180k – $300k per year • Senior • 5+ years exp • Remote (United States, Switzerland, United Kingdom) • Full-Time • Senior
Rust
Cybersecurity
Defense in Depth
Web3
Smart Contracts
Solana
Cosmos
CosmWasm
NEAR
$180k – $300k per year • Senior • 5+ years exp • New York • Remote (United States, United Kingdom, Switzerland) • Full-Time • Senior
Rust
Cybersecurity
Defense in Depth
Web3
Smart Contracts
Solana
Cosmos
CosmWasm
NEAR
Binance is the world's largest cryptocurrency exchange by trading volume, founded in 2017 by Changpeng Zhao and Yi He. The platform offers spot, margin and derivatives trading across hundreds of digital assets, alongside staking, savings products, payments, an institutional custody arm and a self-custodial Web3 wallet. The group also created BNB Chain, one of the most used smart contract networks, and now operates under a licensed regional structure after a 2023 settlement with United States authorities that installed new leadership and compliance oversight.
HQ: Abu Dhabi, United Arab Emirates • Mining & Staking • Crypto Payments • Web3 & dApps • Blockchain & Crypto • Cryptocurrencies • Crypto Exchanges • 1001-5000 employees • Est. 2017
Remote (Taiwan, Hong Kong, Singapore)
≈ $64k – $211k per year (Estimated) • Senior • Remote (United Arab Emirates, Taiwan, Singapore) • Full-Time • Senior
JavaScript
TypeScript
AI/ML
Claude Code
AI Agents
Frontend
ESLint
Webpack
Less
React.js
Sass
Web3
Smart Contracts
Remote (United Arab Emirates, Taiwan, Singapore) • Bachelor's Degree • Contractor
JavaScript
Python
Solidity
TypeScript
Frontend
React.js
DevOps
Git
Web3
DeFi
Foundry
Layer 2
Smart Contracts
Ethereum
Offchain Labs is a blockchain technology company headquartered in New York City, New York, and founded in 2018. The company develops scaling solutions for the Ethereum network, most notably the Arbitrum ecosystem, which includes Arbitrum One, Arbitrum Nova, and the Arbitrum Orbit development framework. It provides infrastructure for decentralized applications and enterprise-grade onchain systems, operating as a core contributor to the Ethereum ecosystem through research, protocol development, and strategic investments.
HQ: New York, United States • IT Infrastructure • Information Technology • Smart Contracts & Security • Web3 & dApps • Blockchain & Crypto • Blockchain Infrastructure • Est. 2018
≈ $180k – $328k per year (Estimated) • Executive • 8+ years exp • Remote (United States) • Full-Time • Architect
Go
Rust
Solidity
Web3
Aave
Arbitrum
Ethereum
Smart Contracts
ZeroDev
≈ $149k – $247k per year (Estimated) • Senior • Remote (United States) • Full-Time • Senior
C++
Rust
Frontend
WebAssembly
Web3
Aave
Arbitrum
Ethereum
Smart Contracts
ZeroDev
≈ $180k – $328k per year (Estimated) • Executive • 8+ years exp • United States • Remote (United States) • Full-Time • Staff
Go
Rust
Solidity
Web3
Aave
Arbitrum
Ethereum
Smart Contracts
ZeroDev
Xsolla is a global video game commerce company that provides specialized financial and operational tools tailored for the gaming industry. The firm helps game developers and publishers fund, launch, market, and monetize their titles across PC, mobile, web, and cloud platforms. By operating as a merchant of record with support for over 1,000 local payment methods, it enables direct-to-consumer sales and seamless cross-border transactions for gaming studios worldwide.
HQ: Los Angeles, United States • Financial Services • Payments • Game Development • Gaming • 1001-5000 employees • Est. 2006
≈ $81k – $176k per year (Estimated) • Senior • 7+ years exp • Los Angeles • Remote (United States, China, Malaysia, Germany) • Full-Time • Senior
MetaMask
Reown
Smart Contracts
Management
Jira
Remote (Serbia) • Full-Time
Go
Node JS
Solidity
TypeScript
JavaScript
Databases
Apache Kafka
NATS
PostgreSQL
AI/ML
Claude
Copilot
Cursor
Frontend
React.js
DevOps
CI/CD
Git
Kubernetes
Web3
Account Abstraction
Ethers.js
Reown
Smart Contracts
Token Standards
Ethereum
NFT
Solana
The Graph
