Design and improve high-volume transaction broadcasting pipelines and wallet infrastructure for scalability.
Manage transaction lifecycle, including detection, retry, rebroadcast, and recovery of stuck transactions.
Build reliable cross-chain and DeFi integrations handling non-atomic multi-step journeys and swap execution.
MoonPay builds the operating system for value movement, enabling crypto, stablecoins, and tokenized assets. With 30M+ customers and 500+ ecosystem partners, the company maintains a high-standards, high-velocity culture and is regulated across multiple regions.
Design and implement new features within the Data Product space, including trust-minimized off-chain computation and aggregation of external data in blockchain environments.
Own end-to-end delivery of data products that power the largest market share of DeFi by total value secured.
Build core products with Smart Contracts using Solidity, Move, and Rust.
Chainlink is the industry-standard oracle platform bringing capital markets onchain and powering the majority of decentralized finance. The company has enabled tens of trillions in transaction value and fosters a collaborative, autonomous engineering culture.
Architect and develop an end-to-end payment gateway integrating Stripe Connect and Airwallex for global fund flows.
Design milestone-based escrow and ledgering systems for secure fund management across extended transaction cycles.
Build scalable financial infrastructure for a B2B SaaS platform enabling cross-border invoicing, payments, and foreign-exchange settlements.
This partner company is building financial infrastructure for complex, high-value, cross-border transactions. They offer a remote work environment and value technical ownership in a rapidly evolving platform.
Build Alpaca's proprietary advisory suite services including Block Trading, Portfolio management, and IRA.
Write code and make critical decisions on frontend, backend, databases, and distributed systems for high performance.
Leverage deep knowledge in low and high-level languages, OMS, and concurrency control to deliver the best customer experience.
Alpaca is a US-headquartered global leader in agent-first brokerage infrastructure for stocks, ETFs, options, crypto, and more. They are a diverse team of 400+ globally distributed members backed by $400 million in funding, committed to open-source contributions and fostering a vibrant community.
Design and implement scalable backend services and APIs for cryptocurrency swapping.
Build routing and aggregation logic for swap execution across multiple liquidity sources.
Integrate on-chain and off-chain data sources (RPC nodes, indexers, third-party APIs).
Biti Pro is a company building core backend systems for cryptocurrency swapping and DeFi aggregation. They are a small team focused on high-performance, scalable services.
Build internal and first-party applications on Tempo for agents and humans.
Partner with startups and enterprises to integrate Tempo into their payment systems.
Develop deep understanding of Tempo blockchain, navigate codebases, and ship products across customer environments.
Tempo is a layer-1 blockchain built for stablecoins and real-world payments, originating from Stripe's payment expertise and Paradigm's crypto tech. We're a team of crypto-optimists building infrastructure for onchain economic flows, moving fast with design partners like Anthropic, DoorDash, and Visa.
Design and build scalable risk detection systems to protect Airbnb's payments platform.
Collaborate with data scientists and product managers to respond to fraud and risk issues.
Build integrations with payment partners and processors to enhance risk systems.
Airbnb is an online marketplace for lodging and travel experiences, connecting hosts with guests globally. The company has grown to over 5 million hosts and 2 billion guest arrivals, fostering a culture of inclusion and belonging.
Design and develop blockchain solutions with Hyperledger and Ethereum.
Present solutions and POCs to clients in a team consultative environment.
Mentor developers and work with internal/external teams on projects.
Blockchain Talent is a world-leading technology recruiter specializing in Blockchain, recruiting CTOs, VPs, and senior engineers for top tech companies. They have expanded to key Blockchain talent hubs from San Francisco to Tel Aviv.
Design and implement backend services in Scala for evaluation, risk, and trading services, including real-time auto-liquidation and account state management.
Build and evolve actor-based systems (Akka) to handle high-throughput market data and event-driven workflows.
Own features end-to-end from technical spec to production, and collaborate with cross-functional teams.
NinjaTrader is an industry-leading trading platform and futures broker that empowers traders with cutting-edge products and services. Since 2003, NinjaTrader has grown to over 2 million users and is the number one rated futures brokerage worldwide, with a dynamic culture focused on social connection, professional development, and employee recognition.
Design and implement highly scalable brokerage systems and microservices.
Collaborate with global teams to enhance the core framework and support multiple languages, currencies, and markets.
Act as incident commander during regional business hours, ensuring proactive 24x7 stability.
Alpaca is a US-headquartered global leader in agent-first brokerage infrastructure for stocks, ETFs, options, crypto, fixed income, and more. With a global team of 400+ members spanning multiple countries, we are deeply committed to open-source contributions and fostering a vibrant community.
Design and implement high-quality native mobile SDKs for embedded wallet experiences.
Own SDK architecture, APIs, release management, and developer documentation end-to-end.
Build secure components supporting wallet operations, cryptography, and blockchain interactions.
This company builds mobile infrastructure powering the next generation of digital asset and financial applications. It is a distributed, fast-moving organization that values developer experience, technical excellence, and continuous growth.
Build and operate Go backend services for key management and signing at scale.
Design and implement cryptographic recovery and trust models for non-custodial wallets.
Work with external auditors, Kubernetes, and distributed systems in a security-critical environment.
Offchain Labs builds the Arbitrum stack, the leading Ethereum scaling solution. They are a well-funded company with $124 million in backing, a small but high-ownership team, and a culture of security-first engineering and collaborative review.
Design, build, and operate production software systems.
Own significant technical projects from architecture through deployment.
Develop scalable services, APIs, infrastructure, and internal tooling.
The company builds sophisticated infrastructure and software systems. It is a rapidly scaling technology company that values ownership and technical excellence.
Design and build user-facing components of services and products using modern web technologies.
Collaborate with backend engineers to integrate APIs and ensure seamless alignment.
Identify and address performance bottlenecks to enhance user experience.
Provable is a company building zero-knowledge applications for the Shield ecosystem. They are a fast-growing team passionate about privacy and transforming the digital age.
Own strategy and roadmap for your product area, including existing trading APIs or net-new initiatives.
Form product decisions from customer feedback, onchain data, and personal experience.
Partner with engineering leads and work directly with the CEO on product direction.
0x provides a suite of developer APIs for faster trading and better prices in the tokenized world. Founded in 2017, the company has processed over 211M+ transactions and $180B+ in trading volume, backed by top investors, and maintains a culture of learning and code quality.
Design and build services and APIs that power core trading platform capabilities.
Own features end-to-end from technical design through production deployment and monitoring.
Contribute to system architecture decisions and mentor engineers.
Topstep builds a trading platform that powers real-time trading and market data delivery for thousands of active traders. The company fosters a collaborative culture with a fully remote to hybrid working environment.
Design and build proprietary advisory services (Block Trading, Portfolio management, IRA) with high quality and performance.
Write code across frontend, backend, databases, and distributed systems, wearing multiple hats in a small team.
Apply deep knowledge of low-latency systems, concurrency, and object-oriented data modeling for scalable architecture.
Alpaca is a US-headquartered global leader in agent-first brokerage infrastructure for stocks, ETFs, options, crypto, and more. With 400+ globally distributed team members and $400 million in funding, they foster a diverse, curious, and empathetic culture.
Develop and maintain the QAD Redzone API Backend (Scala) to ensure seamless user experience for manufacturing teams.
Improve OpenSearch usage within the backend and support AI integrations via MCP server.
Provide subject matter expertise during incidents and contribute to continuous system improvement.
Redzone helps manufacturers improve productivity and employee experience through connected worker technology. With over 1,000 customers and 500,000 users, the company focuses on empowering frontline teams with real-time decision-making and coaching.
Advocate for engineering excellence while mentoring junior team members and collaborating across teams.
Binance is the world's leading blockchain ecosystem behind the largest cryptocurrency exchange by trading volume. Trusted by over 300 million users across 100+ countries, the company fosters a user-centric, flat-structured culture with world-class talent.
Design, develop, and maintain core systems for market data products, ensuring reliability and scalability.
Contribute to architectural decisions and solve complex technical challenges across engineering teams.
Optimize systems for low latency and high throughput, focusing on performance improvements.
The company builds high-performance systems for modern financial markets. It is a globally distributed team of experienced engineers and financial technology specialists.