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
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
MoonPay is a cryptocurrency payments company headquartered in Miami, Florida, and founded in 2019. The company operates an on and off ramp that lets people buy and sell digital assets with cards and bank transfers, and supplies wallet, NFT checkout, and compliance infrastructure to other crypto businesses. It is integrated into hundreds of wallets and exchanges and holds money transmission and virtual asset licenses across the United States and Europe.
HQ: Miami, United States • FinTech • Crypto Wallets • Payments • Financial Services • Blockchain & Crypto • Crypto Payments • Est. 2019
$190k – $255k per year • Senior • Remote/Hybrid (New York, United States) • Full-Time • Senior
Platform Engineering
Web3
Bitcoin
DeFi
MEV
Solana
Smart Contracts
Token Standards
$150k – $210k per year • Senior • Remote/Hybrid (New York, United States) • Senior
Platform Engineering
Web3
Bitcoin
DeFi
MEV
Solana
Smart Contracts
Token Standards
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
$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
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 • 3+ years exp • Remote (United States, Switzerland, United Kingdom) • Bachelor's Degree • Full-Time • Senior
C++
Rust
Web3
Solana
Bitcoin
Ethereum
$180k – $300k per year • Senior • 3+ years exp • Remote (United States, Switzerland, United Kingdom) • Bachelor's Degree • Full-Time • Senior
C++
Rust
Web3
Solana
Bitcoin
Ethereum
$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
Jump Trading is a proprietary trading firm focused on quantitative and high-speed strategies. It invests heavily in networking, hardware acceleration and research computing. The firm also runs ventures in cryptocurrency infrastructure and machine learning research.
HQ: Chicago, United States • Est. 1999
In office (Sydney, Australia)
Go
Python
Rust
DevOps
Alertmanager
Ansible
Configuration Management
Kubernetes
Prometheus
Terraform
Web3
DeFi
Ethereum
Solana
Coinflow is a global payment infrastructure platform that bridges traditional fiat payment systems with blockchain-based stablecoin settlement. The platform enables Web3 applications, digital marketplaces, and e-commerce businesses to accept credit cards and bank transfers while executing near-instant payouts worldwide. Equipped with developer-friendly APIs, built-in fraud prevention, and chargeback protection, it simplifies cross-border money movement and allows companies to easily onboard non-crypto users.
Chicago • Financial Services • Payments • Blockchain & Crypto • Crypto Payments
$220k – $275k per year • Equity • Executive • In office (Chicago, United States) • Full-Time • Architect
TypeScript
Databases
ClickHouse
Redis
Web3
Smart Contracts
Solana
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
≈ $104k – $209k per year (Estimated) • Senior • 6+ years exp • In office (San Francisco, United States) • Contractor • Senior
JavaScript
TypeScript
Kotlin
DevOps
CI/CD
Docker
GitHub Actions
Jenkins
Kubernetes
GitHub
Grafana
Helm
Kibana
Prometheus
Web3
DeFi
Smart Contracts
Solana
QA
Appium
Cucumber
Cypress
Postman
Rest-Assured
Selenium
SoapUI
TestRail
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
≈ $143k – $291k per year (Estimated) • In office (San Francisco, United States)
Java
Kotlin
SQL
Java
Hibernate
Spring Boot
DevOps
Git
Rest API
Azure
CI/CD
Docker
Kubernetes
Web3
Corda
DeFi
Solana
Founded in 2022, Allium is an enterprise-grade blockchain data platform that provides real-time, normalized data infrastructure for Web3 applications. The company ingests and processes raw smart contract data across major blockchain networks, transforming it into clean, developer-ready APIs and analytics databases. By removing the complexity of indexing and hosting node infrastructure, it enables financial institutions, crypto enterprises, and developers to build applications and power financial operations smoothly.
New York • San Francisco • Metals & Metallurgy • Manufacturing • Metal Fabrication
≈ $65k – $153k per year (Estimated) • Equity • Remote (Australia, Singapore) • Full-Time
Bash
Python
SQL
Databases
Apache Kafka
Databricks
Google BigQuery
PostgreSQL
Snowflake
Amazon Redshift
AI/ML
AI Agents
dbt
DevOps
Incident Management
SLI/SLO/SLA
Ansible
Terraform
Web3
Ethereum
Solana
Staking
Uniswap
Consensus
Analytics
ETL/ELT
Trusted by 400+ institutions to launch, secure, and scale digital asset products across custody, tokenization, staking, payments, and settlement.
Blockchain & Crypto • Mining & Staking • Blockchain Infrastructure
$190k – $225k per year • Staff+ • 10+ years exp • Remote (United States) • Full-Time • Architect
Rust
Solidity
TypeScript
DevOps
AWS
Azure
GCP
Cybersecurity
ISO 27001
SOC 2
Web3
Staking
Bitcoin
Ethereum
Liquid Staking
Solana
$150k – $180k per year • Staff+ • 10+ years exp • Remote (Germany, France, Russia, United Arab Emirates, United Kingdom) • Full-Time • Architect
Rust
Solidity
TypeScript
DevOps
AWS
Azure
GCP
Cybersecurity
ISO 27001
SOC 2
Web3
Staking
Bitcoin
Ethereum
Liquid Staking
Solana
Jito Labs is a leading MEV and infrastructure provider on Solana. We build high-performance systems to maximize validator rewards and secure the network. Explore our solutions for validators, searchers, and stakers.
Mining & Staking • DeFi • Blockchain & Crypto • Blockchain Infrastructure
≈ $107k – $230k per year (Estimated) • Remote (United States)
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
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
Powered by Pioneer is a Web3-focused talent platform and recruitment service provider specializing in the blockchain and cryptocurrency ecosystem. The organization connects software engineers, infrastructure developers, and specialized digital talent with major Web3 projects and open-source blockchain networks, such as BNB Chain. Additionally, it provides bespoke software engineering support and IT consultancy services to help organizations build and scale decentralized digital infrastructure.
HQ: San Francisco, United States • Information Technology
≈ $119k – $260k per year (Estimated) • Senior • 3+ years exp • Remote (United States) • Visa sponsorship • Bachelor's Degree • Senior
Go
Python
Databases
Apache Kafka
Redis
DevOps
AWS
Azure
CI/CD
Docker
GCP
Git
GitOps
Karpenter
Kubernetes
Nginx
OpenTelemetry
Platform Engineering
Prometheus
Terraform
ArgoCD
Helm
Helmfile
Istio
Linkerd
Service Mesh
IAM
Web3
Bitcoin
Cosmos
Ethereum
Layer 2
Solana
≈ $93k – $236k per year (Estimated) • Senior • 3+ years exp • Remote (Hong Kong, Singapore) • Full-Time • Senior
Go
Python
Databases
Apache Kafka
Redis
DevOps
AWS
Azure
CI/CD
Docker
GCP
Git
GitOps
Karpenter
Kubernetes
Nginx
OpenTelemetry
Platform Engineering
Prometheus
Terraform
ArgoCD
Helm
Helmfile
Istio
Linkerd
Service Mesh
IAM
Web3
Bitcoin
Cosmos
Ethereum
Layer 2
Solana
Junior • 2+ years exp • Remote (Hong Kong, Singapore) • Junior
Go
Rust
Web3
Consensus
Core Blockchain
Aptos
BNB Smart Chain
Ethereum
Solana
Sui
Gauntlet is DeFi's risk manager. We drive capital efficiency while maintaining economic safety for some of the largest crypto protocols with our simulations. Gauntlet manages risk and incentives for over $40 Billion in assets.
New York • Cryptocurrencies • Blockchain & Crypto • DeFi • Est. 2018
$12k per year • Junior • 2+ years exp • Remote (United States, Canada) • Visa sponsorship • Bachelor's Degree • Senior
Python
SQL
TypeScript
Databases
Google BigQuery
AI/ML
Dagster
DevOps
GCP
Kubernetes
Web3
DeFi
Solana
≈ $84k – $166k per year (Estimated) • Junior • 2+ years exp • New York • Remote (United States, Canada) • Full-Time • Junior
Python
SQL
TypeScript
Databases
Google BigQuery
AI/ML
Dagster
DevOps
GCP
Kubernetes
Web3
DeFi
Solana
Fuse Energy is a British household energy supplier headquartered in London, founded by former Revolut executives. It was the first new domestic energy supplier in Great Britain since the 2021 energy crisis and operates its own renewable generation assets.
HQ: London, United Kingdom • Solar Energy • Energy & Utilities • 501-1000 employees • Est. 2022
≈ $91k – $179k per year (Estimated) • Remote (United States) • Full-Time
C++
Python
DevOps
CI/CD
RTOS
WebSockets
AWS
Azure
GCP
Cybersecurity
GDPR
ISO 27001
Web3
Solana
IoT
CoAP
FreeRTOS
MQTT
Zigbee
≈ $68k – $161k per year (Estimated) • In office (London, United Kingdom) • Full-Time
Python
JavaScript
AI/ML
InfiniBand
Frontend
Bootstrap
DevOps
Ansible
Configuration Management
Datadog
Grafana
Prometheus
HPC
Cybersecurity
FortiGate
Web3
Solana
≈ $114k – $180k per year (Estimated) • Senior • 5+ years exp • In office (London, United Kingdom) • Relocation • Visa sponsorship • Bachelor's Degree • Cofounder • Senior
TypeScript
JavaScript
Frontend
Next.js
React.js
Web3
Solana
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
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
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
$175k – $220k per year • Remote (United States) • Full-Time
TypeScript
JavaScript
Rust
Rust
Axum
Databases
PostgreSQL
Redis
Frontend
React.js
Zod
DevOps
AWS
Web3
Solana
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
Temporal is an open-source durable execution platform and workflow orchestration engine designed to help developers build reliable, fault-tolerant distributed applications. Originated from the team behind Uber’s Cadence and engineers with deep background in AWS and Azure messaging systems, Temporal allows developers to write business logic as code while automatically persisting state, handling retries, and managing failure recovery behind the scenes.
HQ: Seattle, United States • DevOps • Information Technology • Software
$200k – $350k per year • Equity • New York • Remote (United States) • Full-Time
Rust
SQL
Databases
ClickHouse
NATS
PostgreSQL
Web3
DeFi
Solana
Analytics
ETL/ELT
