Implement components across the on-chain transaction lifecycle, including calldata construction, signing requests, and nonce management.
Build new features within the institutional custody signing pipeline, including submission paths and asynchronous transaction handling.
Write comprehensive automated tests for backend services and smart contracts, and participate in an on-call rotation.
Cari is building blockchain-based payment infrastructure that enables real-time, 24/7 movement of digital money across traditional financial institutions and the digital asset ecosystem. As a pre-launch startup, they offer a remote-first environment with close collaboration from an experienced founding and engineering team.
Design and build transaction parsing, validation, and broadcasting infrastructure across multiple blockchain protocols
Develop and maintain protocol-specific libraries and abstractions that power Turnkey's transaction management layer
Collaborate effectively across the company to design and deliver core product capabilities
Turnkey is developer-first infrastructure for private key management, making it simple to create wallets, sign transactions, and automate on-chain actions. The team is low-ego, high-agency, and high-autonomy, with significant experience in cryptography, security, and low-level systems.
Design, implement, and test distributed energy resource controls and telemetry software on customer hardware at sites around the world.
Develop high-performance, production-grade applications optimized for resource- and bandwidth-constrained environments.
Implement and enforce best security practices for critical infrastructure and cyber-physical systems, while mentoring junior engineers.
Verse is building an energy intelligence platform for the AI economy, helping large energy consumers achieve faster, cheaper, and cleaner power by combining real-time control of energy assets with complete visibility into their energy portfolio. The company is a high-growth startup backed by Bessemer, GV, Coatue, and NVIDIA, with a culture rooted in empathy, transparency, and thoughtful action.
Build and maintain distributed systems for custody of digital assets, including cash, coins, NFTs, and staking.
Lead medium-to-large projects, breaking down tasks, estimating scope, and ensuring code quality and testing.
Collaborate cross-functionally, mentor team members, and share knowledge to avoid single points of failure.
Anchorage Digital builds a digital asset platform for institutions to participate in crypto through custody, staking, and trading. Founded in 2017, it has over 600 employees and is valued over $3 billion, with a culture focused on security and inclusion.
Design and build the client-side telemetry system in the Rust core for SDK observability across all platforms.
Evolve support bundles and reduce logging overhead to ensure near-invisible performance impact.
Own Rust SDK development, customer support, and direct engagement with debugging production issues.
Ditto builds a peer-to-peer sync engine for real-time data at the edge. With over $145 million in funding and a globally distributed team, we are a fast-growing startup committed to diversity and inclusion.
Lead strategic client engagements, developing bespoke solution concepts and guiding onboarding to drive success on Arbitrum.
Proactively identify and advocate for strategic partnerships with promising application teams to foster engaging on-chain experiences.
Work with the Product team to relay feedback from projects and shape go-to-market strategy for new products, especially for developer audience.
Offchain builds the Arbitrum stack, a leading Ethereum scaling solution. Backed by $124 million, their team of thinkers and doers tackles novel challenges in blockchain scalability and security.
Own the architecture of the Nexus Exchange end-to-end while staying hands-on in production code.
Lead the engineering org, managing timelines, roadmaps, and resourcing across senior engineers and pods.
Drive product and customer outcomes with high-frequency iteration and a business-first mindset.
Nexus is a blockchain built to natively embed the world’s financial system into one compounding system, unifying infrastructure across chains. Headquartered in San Francisco with a growing presence in Buenos Aires, the cross-continental team of engineers and cryptographers is backed by investors like Pantera and Lightspeed.
Design and develop foundational components and frameworks for our Agentic AI platform.
Collaborate with cross-functional teams to create platform solutions that empower developers.
Provide production support and ensure platform stability, working closely with ML engineers.
Legion builds secure, reliable AI systems that integrate with complex platforms, optimizing workflows and enhancing human capability. They work with partners like Palantir, Nvidia, HPE, and Oracle, and are looking for bold thinkers to shape the future of grounded AI.
Identify sources of friction across the software development lifecycle and scope agentic solutions to address them.
Design and build reliable AI-powered systems that follow step-by-step workflows and use tooling with safety checks.
Build and maintain evaluation tools that judge agent output on correctness, constraint compliance, and cost.
GitLab is an intelligent orchestration platform for DevSecOps that enables organizations to increase developer productivity and improve operational efficiency. With over 50 million registered users and a high-performance culture, GitLab fosters innovation and collaboration across a global remote team.
Set technical direction for agentic systems and drive fixes from hypothesis to shipped, measured results.
Work across GitLab's codebase as a generalist, applying distributed systems judgment to catch concurrency and scale issues.
Mentor senior and mid-level engineers through design reviews and pairing, and collaborate with India-based group on roadmap.
GitLab is the intelligent orchestration platform for DevSecOps, enabling organizations to increase developer productivity, improve operational efficiency, and reduce security and compliance risk. Trusted by more than 50 million registered users and more than half of the Fortune 100, GitLab's high-performance culture is driven by values, AI adoption, and continuous knowledge exchange.
You will use your Rust experience to build infrastructure and tooling for hardware and software teams.
You will design and implement a Rust-based simulator and host-side interface library.
You will write tests to systematically explore corner cases and rare event sequences.
MatX is building best-in-class silicon for high-performance and sustainable GenAI. They are a growing company with a focus on creating an inviting and inclusive work environment.
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.
Contribute production-quality code to GitLab's product, developing bug fixes, features, and integrations to resolve strategic customer challenges.
Diagnose complex problems across GitLab product behavior, customer architecture, and AI adoption, coordinating cross-functional teams for resolution.
Drive governed, measurable adoption of the GitLab Duo Agent Platform, creating reusable patterns and thought leadership.
GitLab is the intelligent orchestration platform for DevSecOps, enabling organizations to increase developer productivity and accelerate digital transformation. With over 50 million registered users and trusted by more than 50% of the Fortune 100, GitLab fosters a high-performance culture driven by values, continuous knowledge exchange, and AI adoption.
Own the design and implementation of platform subsystems end to end.
Anchor meaningful projects, balancing reliability, scalability, and time to market.
Mentor SWE and SWE II engineers and contribute to a strong code review culture.
Stacklok is building the control plane for enterprise AI agents, enabling organizations to run, govern, and secure them on their own infrastructure. The company is led by Kubernetes co-creators and is a startup with a collaborative, AI-maximalist culture.
Own the architecture and evolution of the SMBP Operator's CRD API surface, designing extensions that meet enterprise expectations.
Design and implement flexible network configuration patterns that give customers choice of ingress controller, load balancer, and traffic management approach.
Build the observability integration enterprise customers expect: Prometheus-native metrics, ServiceMonitor CRDs, Kubernetes Events, and pre-built dashboards.
Ditto is redefining how data moves at the edge, making it seamless for developers to build resilient, real-time applications regardless of network conditions. With more than $145 million in funding and trusted by organizations like Chick-fil-A, Delta Airlines, and the U.S. military, Ditto is a globally distributed, fast-growing startup committed to building a diverse and inclusive team.
Design and operate the infrastructure for a high-throughput messaging platform operating at 500K+ events/sec.
Build guardrails, runbooks, and validation gates that enable AI agents to safely execute deployments and operations.
Lead incident response and encode every fix as a new runbook and regression test.
Postscript is an AI messaging platform trusted by 20,000+ Shopify brands to drive revenue through SMS. The company is fully remote, backed by Greylock and Y Combinator, and has a culture of ownership and innovation.
Troubleshoot complex code and client integrations to identify bugs, performance bottlenecks, and configuration issues.
Collaborate with Engineering to escalate and prioritize product gaps, bugs, and client feedback for improvement.
Build internal tools, scripts, and dashboards to enhance support efficiency and monitor API health proactively.
Zerohash is the leading crypto and stablecoin infrastructure platform, enabling banks and fintechs to offer digital asset services without building blockchain infrastructure. Founded in 2017, the company has raised over $280 million in funding and is trusted by major financial brands, guided by principles of independence, passion, and collaboration.
Design and develop distributed systems for a data platform handling petabytes of data.
Take ownership of components like data ingestion and decoding.
Write code in Kotlin and Go with a focus on good design and performance.
Dune is a collaborative multi-chain analytics platform that makes crypto data accessible. They are a team of ~60 employees working across Europe and eastern US timezones, backed by top investors.
Lead an engineering team responsible for delivering reliable, scalable infrastructure supporting the Data Feeds product.
Partner with Product and technical leadership to translate strategic priorities into well-executed engineering roadmaps.
Provide engineering judgment to support the team in making sound architectural and operational decisions.
Chainlink is the industry-standard oracle platform bringing the capital markets onchain and powering the majority of decentralized finance (DeFi). Since inventing decentralized oracle networks, Chainlink has enabled tens of trillions in transaction value and now secures the vast majority of DeFi.