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
$81k – $1M per year (gross) • Equity • Senior • 7+ years exp • In office (Prague, Czech Republic) • 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
$81k – $1M per year (gross) • Equity • Senior • 7+ years exp • In office (Tel Aviv, Israel) • 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
≈ $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
Headquartered in Toronto, Ontario, Canada, Layer 6 AI is an artificial intelligence research laboratory and engineering organization operating as the AI center of excellence for TD Bank Group. Founded in 2016 and acquired by TD Bank in 2018, the company develops and deploys enterprise-grade deep learning, generative AI, and time-series forecasting models across retail banking, wealth management, and financial operations.
HQ: Toronto, Canada • Artificial Intelligence • 1001-5000 employees • Est. 2016
≈ $67k – $170k per year (Estimated) • Senior • 5+ years exp • In office (Toronto, Canada) • Bachelor's Degree • Full-Time • Senior
Java
Rust
Solidity
Solidity
Mythril
Databases
Apache Kafka
AI/ML
Tokenization
DevOps
Azure
Web3
DeFi
Foundry
OpenZeppelin
Slither
Smart Contracts
Token Standards
Ethereum
≈ $66k – $167k per year (Estimated) • Senior • 5+ years exp • In office (Toronto, Canada) • Bachelor's Degree • Full-Time • Senior
Java
Rust
Solidity
Solidity
Mythril
Databases
Apache Kafka
AI/ML
Tokenization
DevOps
Azure
Web3
Corda
DeFi
Foundry
OpenZeppelin
Slither
Smart Contracts
Token Standards
Ethereum
ING Group is a Dutch multinational banking and financial services corporation headquartered in Amsterdam, with a strong presence across Europe and the globe. The institution provides a comprehensive range of services, including retail and wholesale banking, commercial lending, and asset management for individuals, corporations, and government entities. Driven by a commitment to sustainability and digital innovation, the company empowers its customers to stay a step ahead in both their personal and professional financial lives.
HQ: Amsterdam, Netherlands • Investment Banking • Financial Services • Banking • 1001-5000 employees • Est. 1918
Senior • 5+ years exp • Remote/Hybrid (Istanbul, Turkey) • Bachelor's Degree • Full-Time • Senior
Solidity
Solidity
Echidna
Mythril
DevOps
CI/CD
Kubernetes
IAM
Cybersecurity
ISO 27001
SOC 2
Web3
Smart Contracts
Corda
Ethereum
Foundry
Hyperledger Fabric
Slither
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
≈ $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
$200k – $280k per year • Equity • Staff+ • 10+ years exp • In office (New York, United States) • Full-Time • Staff
Node JS
Solidity
JavaScript
AI/ML
AI Agents
Web3
Foundry
Hardhat
Smart Contracts
Solana
Arbitrum
Ethereum
Polygon
Citi is a leading global financial services company headquartered in New York City, offering a broad range of banking, investment, and wealth management services to consumers, corporations, and institutions. As one of the world's largest banking institutions, it operates across more than 160 countries and jurisdictions, serving as a critical facilitator of global commerce. Through its primary consumer division, Citibank, alongside its institutional businesses, the company provides everyday banking, credit cards, capital markets solutions, and cross-border payment infrastructure worldwide.
HQ: New York, United States • Credit Cards • Financial Services • Banking • 1001-5000 employees • Est. 1900
≈ $86k – $207k per year (Estimated) • Executive • Remote/Hybrid (London, United Kingdom) • Bachelor's Degree • Full-Time • Staff
Java
Solidity
JavaScript
DevOps
CI/CD
Docker
Helm
Kubernetes
Platform Engineering
Web3
Smart Contracts
Web3.js
Ethereum
$142k – $213k per year • Executive • 12+ years exp • Remote/Hybrid (New York, United States) • Bachelor's Degree • Full-Time • Architect
Java
Node JS
Solidity
JavaScript
Solidity
Truffle
Databases
Apache Kafka
RabbitMQ
AI/ML
Tokenization
DevOps
CI/CD
Docker
Git
Helm
Jenkins
Kubernetes
Web3
DeFi
Ethereum
Ethers.js
Layer 2
Smart Contracts
Solana
Viem
Web3.js
Foundry
Hardhat
Optimism
Polygon
Token Standards
ZkSync Era
Management
Jira
$142k – $213k per year • Executive • 10+ years exp • Remote/Hybrid (New York, United States) • Bachelor's Degree • Full-Time • Senior
Java
Node JS
Solidity
JavaScript
Solidity
Truffle
Databases
Apache Kafka
RabbitMQ
AI/ML
Tokenization
DevOps
CI/CD
Docker
Git
Helm
Jenkins
Kubernetes
Web3
DeFi
Ethereum
Ethers.js
Layer 2
Smart Contracts
Solana
Viem
Web3.js
Foundry
Hardhat
Optimism
Polygon
Token Standards
ZkSync Era
Management
Jira
The capital market for every asset on earth.. Solana is the leading high performance network powering internet capital markets, payments, and crypto applications.
New York • Columbia • San Juan • San Francisco • Web3 & dApps • Blockchain & Crypto • Blockchain Infrastructure
≈ $90k – $219k per year (Estimated) • Senior • 5+ years exp • Remote (Europe) • Full-Time • Senior
Dart
Kotlin
Node JS
Rust
TypeScript
JavaScript
Databases
PostgreSQL
Redis
AI/ML
Claude
Claude Code
Copilot
Cursor
LLM
Mobile
Flutter
DevOps
AWS
AWS Lambda
CI/CD
Docker
GitHub Actions
Grafana
Loki
Prometheus
WebSockets
Amazon ECS
Amazon S3
GitHub
Web3
Solana
Staking
Ethereum
solana-web3.js
Web3.js
Trail of Bits is a cybersecurity research, engineering, and consulting firm that specializes in software assurance, cryptography, and advanced threat modeling. The company provides deep code audits, penetration testing, and security evaluations for complex digital systems, including smart contracts, AI/ML pipelines, and cloud infrastructure. Known for its strong focus on open source, it actively develops public security tools, conducts government-backed research, and advances industry-wide software security standards.
Financial Services • Blockchain & Crypto • Audit • Cybersecurity • 51-200 employees
$160k – $200k per year • Senior • Remote (United States) • Relocation • Full-Time • Senior
Go
Rust
Solidity
AI/ML
AI Agents
Model Context Protocol
Cybersecurity
Empire
Web3
Slither
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
≈ $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
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
Remote (Argentina) • 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
Nasdaq, Inc. is a global financial technology and exchange company headquartered in New York City, United States, founded in 1971. The company operates the Nasdaq Stock Market and provides a wide range of services including capital market platforms, financial data analytics, and regulatory technology solutions such as anti-money laundering and fraud detection software. It serves institutional investors, corporations, and market operators across North America and Europe, managing multiple exchanges and providing mission-critical infrastructure for the global financial system.
HQ: New York, United States • Risk Management • Fraud Detection • Cybersecurity • Analytics Platforms • Data & Analytics • FinTech • Financial Services • Capital Markets • 5000+ employees • Est. 1971
$155k – $287k per year • Equity • Lead • 8+ years exp • Remote/Hybrid (New York, United States) • Full-Time • Principal
Rust
Solidity
Web3
Smart Contracts
Solana
Substrate
Polkadot
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 (United States) • Full-Time • Senior
Rust
Solidity
Web3
Account Abstraction
Ethereum
Layer 2
OP Stack
Optimism
Smart Contracts
Uniswap
≈ $136k – $233k per year (Estimated) • Senior • 5+ years exp • New York • Remote (United States) • Full-Time • Senior
DeFi
Ethereum
Layer 2
OP Stack
Optimism
Uniswap
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 – $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
At R3, we are building the on-ramp for the next trillion dollars of assets to move on-chain, bridging the worlds of traditional finance (TradFi) and decentralized finance (DeFi). We are launching institutional-grade RWA yield vaults, fully composable and integrated into Solana DeFi. We are also the producers of Corda, the enterprise-grade distributed ledger platform trusted by regulated financial institutions globally, built for the constraints of regulated finance: permissioned networks, deterministic consensus, and privacy by design.
San Francisco • Blockchain & Crypto • DeFi • Blockchain Infrastructure
Staff+ • 6+ years exp • In office (San Francisco, United States) • Staff
Rust
TypeScript
Java
Kotlin
Databases
PostgreSQL
DevOps
Kubernetes
Terraform
Web3
Anchor
Corda
DeFi
Solana
Products and APIs built on stablecoin rails that unlock the benefits of modern money. Explore products, programmable smart accounts, multisig, payments, trading and yield APIs.
New York • Blockchain & Crypto • Crypto Payments • Stablecoins
≈ $111k – $225k per year (Estimated) • Senior • 5+ years exp • Remote (United States) • Full-Time • Senior
JavaScript
TypeScript
Frontend
Next.js
React.js
DevOps
Rest API
WebSockets
Cybersecurity
Least Privilege
Web3
Helius
Jito
Solana
solana-web3.js
Web3.js
Ethereum
Design
Figma
QA
Jest
N-iX is a global software development and IT consulting company founded in Lviv, Ukraine, in 2002. The firm partners with enterprise clients, mid-sized businesses, and tech startups to deliver custom software engineering, cloud transformation, AI and data analytics, and embedded systems solutions. Operating across multiple delivery hubs in Europe and the Americas, it focuses on helping organizations scale their engineering capabilities and accelerate digital transformation.
HQ: Lviv, Ukraine • HQ: Valletta, Malta • Data & Analytics • Artificial Intelligence • Software • 1001-5000 employees • Est. 2002
$67k – $72k per year • Senior • Kraków • Remote (Poland) • Bachelor's Degree • Full-Time • Senior
JavaScript
TypeScript
Frontend
GraphQL
Lighthouse
Next.js
React.js
DevOps
AWS
CI/CD
GCP
Git
Rest API
Web3
Ethers.js
Ethereum
QA
Chrome DevTools
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
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
LiveEO is a Berlin company founded in 2018 that analyses satellite imagery to monitor infrastructure. Its algorithms detect vegetation encroachment, ground movement and construction risk along railways, pipelines and power lines. The company works with major European network operators and on deforestation compliance reporting.
HQ: Berlin, Germany • Transportation & Logistics • Financial Services • Audit • Supply Chain • Cybersecurity • Est. 2018
≈ $68k – $173k per year (Estimated) • Equity • Senior • Remote/Hybrid (Berlin, Germany) • Full-Time • Senior
Python
Solidity
Databases
Databricks
DevOps
AWS
Amazon EC2
Amazon S3
Web3
Slither
DriveWealth provides brokerage infrastructure that lets partners embed investing into their apps. Its API supports fractional share trading, account opening and clearing across borders. Banks and fintech firms worldwide use it to offer United States equities.
HQ: Chatham, United States • Office Management • Professional Services • Financial Services • Est. 2012
$280k – $310k per year • Equity • Lead • 8+ years exp • Remote/Hybrid (New York, United States) • Full-Time • Principal
JavaScript
Node JS
TypeScript
Java
Node JS
Nest.JS
Java
Spring Boot
Databases
Apache Kafka
AI/ML
Tokenization
DevOps
CI/CD
Incident Management
OpenTelemetry
Rest API
Cybersecurity
Zero Trust
Web3
Ethers.js
Web3.js
Bitcoin
Ethereum
Smart Contracts
Solana
Decrypt is an independent digital media publisher and editorial platform focused on cryptocurrency, blockchain technology, Web3, artificial intelligence, and emerging decentralized technologies. Launched in 2018 (originally incubated by Consensys) and headquartered in New York City, the publication delivers breaking news, analytical journalism, educational guides, and reviews covering decentralized finance (DeFi), NFTs, layer-1/layer-2 networks, and crypto regulation.
Data & Analytics • Cryptocurrencies • Blockchain & Crypto • Est. 2018
≈ $93k – $174k per year (Estimated) • Junior • 2+ years exp • Remote (United States) • Contractor • Junior
JavaScript
TypeScript
Solidity
Databases
PostgreSQL
AI/ML
Claude
Claude Code
AI Agents
Frontend
Next.js
React.js
Remix
Tailwind CSS
Vite
DevOps
Azure
CI/CD
Cloudflare
Git
Kubernetes
GitHub
Web3
Smart Contracts
Ethereum
Remix
Design
Figma
