Design, build, and maintain core protocol components for a Bitcoin-secured Layer 2 rollup.
Work on the bridge and proof system, including deposits, withdrawals, and cross-layer messages.
Maintain a large open source codebase, review code, and take part in architecture decisions.
RootstockLabs is a key contributor to Rootstock, Bitcoin's financial infrastructure for lending, yield, and onchain capital markets. The company builds and commercializes institutional infrastructure that turns Bitcoin into productive capital, working with leading custodians and asset managers. Rootstock is secured by over 80% of Bitcoin's hash power and runs with 100% uptime since 2018.
Develop core backend infrastructure for blockchain execution and Ethereum scaling.
Tackle distributed systems challenges involving reliability, performance, and scalability.
Strengthen security and drive projects from investigation through implementation.
They build foundational infrastructure for Ethereum scalability, security, and decentralized applications. They are a remote-first, globally distributed team collaborating across research, product, and blockchain engineering.
Build and scale the systems powering a large residential device network for web data extraction.
Scale the data plane to handle 50-100 million requests per day across distributed systems.
Own and improve proxy services, fleet management, and scheduling platforms.
The company builds and manages a large residential device network used for web data extraction. It operates as a remote-first, globally distributed team with a focus on engineering excellence and collaboration.
Lead cloud integration development while contributing directly to production code.
Define technical direction and work across Kubernetes, databases, and cloud services.
Hire, mentor, and support engineers while collaborating with Product and customers.
The company develops cloud integration features that simplify software development in complex, cloud-native environments, enabling developers and AI coding agents to test against real infrastructure. It is a small, high-caliber team that values remote-first asynchronous collaboration and direct product impact.
Design, build, and maintain scalable backend services for order routing, task allocation, fulfillment tracking, and shopper compensation.
Lead technical design for high-impact projects and improve fulfillment efficiency across marketplaces.
Ensure Tier-0 systems are reliable, incorporate AI-assisted tools, and mentor fellow engineers.
The company operates large-scale, real-time fulfillment operations across consumer and enterprise marketplaces. It is a remote-first organization with a collaborative, cross-functional engineering culture.
Work closely with the backend team to understand intricacies and help iterate on components used to build our wallet libraries.
Integrate new features in brave-core that help our front-end team connect prototypes to live data.
Be up-to-date with upcoming protocol upgrades, BIPs, EIPs, etc.
Brave is on a mission to protect the human right to privacy online, building a free web browser that blocks ads and trackers, a private search engine, a crypto wallet, and a private ad network. With over 125 million users, Brave is a hyper-growth company with a fully remote, flat org structure and a welcoming team.
Own and run bug bounty programs and external audit engagements, triaging and validating fixes.
Secure code and software supply chain, including CI/CD defenses, dependency controls, and signing.
Build anti-scam, anti-abuse, and security tooling with static/dynamic analysis and LLM-driven agents.
Mysten Labs builds foundational blockchain infrastructure and products, including Sui and Move, to advance the internet and enable the agent economy. It is a remote-first, world-class team backed by a $300M Series B from leading venture funds.
You own the architecture of Sondera's backend services, deciding how they are designed, scale, and fail closed.
You set the technical bar, run design review, and turn AI security research into enforceable systems-level guarantees.
In your first year, you write the architecture of record, prove verdicts replay exactly, and raise the bar on every principal hire.
Sondera AI agents act on what people write, enforcing policy through natural-language rules to ensure semantic integrity. Backed by Decibel, Runtime Ventures, and Aviso Ventures, their team has built products at Cylance, Databricks, and HiddenLayer.
Lead two specialized engineering teams building developer tools for smart contracts.
Shape technical roadmap and architecture while managing project delivery and quality.
Foster a high-performing remote culture and develop engineering talent.
Builds open-source developer infrastructure for the Ethereum ecosystem, including the Hardhat toolset. Remote-first culture with lean engineering practices and a focus on technical excellence.
Lead large-scale Sensor Platform initiatives in high-throughput ingestion, pipeline scalability, and queue management reliability.
Own root cause analysis and postmortems for complex production issues across capture pipeline and message broker integration.
Champion standards for documentation, observability, and performance benchmarks while mentoring engineers through reviews.
Dragos is a global leader in OT/ICS cybersecurity, combining technology, threat intelligence, and expert services to protect critical infrastructure. The remote-first team across North America, Europe, the Middle East, and APAC is built on authenticity, transparency, and trust.
Design and own the over-the-air update system for NodeZero, including delivery protocol, version negotiation, rollout orchestration, health verification, and automatic rollback.
Own fleet management to track version state of every deployment, design safe rollout strategies like canary and phased rollouts, and ensure reliable delivery across constrained and air-gapped environments.
Mentor P4 engineers through design and code reviews, set technical direction for update delivery, and own OTA system reliability end-to-end with on-call incident response.
Horizon3 is a remote cybersecurity company that helps organizations proactively find, fix, and verify exploitable attack vectors before criminals exploit them via its NodeZero autonomous pentesting platform. It is a fast-growing team of former special operations cyber operators and engineers committed to a culture of respect, collaboration, ownership, and results.
Build and maintain the backend systems powering ElevenLabs' managed services productions platform.
Own the scope of human data platforms, core productions engine, or editor platform using Rust and full-stack engineering.
Ensure reliability, scalability, and high quality in internal platforms and data pipelines.
ElevenLabs is an AI research and product company transforming how we interact with technology, providing AI voice, agent, creative, and API platforms. They have raised $781M in funding, valued at $22B, and serve millions of users and thousands of businesses with a high-velocity, impact-driven culture.
Work with hardware architects, designers, and verification engineers to build tools that accelerate their workflows.
Evolve the Bluespec compiler and libraries to improve compile speed, reproducibility, and error detection.
Build flows connecting design and verification, including assertions and Rust reference model checks.
MatX designs full-stack AI hardware and software to make AI models run as efficiently as possible. The company fosters a culture of engineering excellence, where teams work closely on compilers, silicon, and ML systems.
Design and build features in the Dapr runtime, from proposal to release.
Review pull requests from the community and your team, holding the bar on correctness, tests, and API design.
Find and fix bugs in distributed code: race conditions, retries, partial failures, and crash-surviving state.
Diagrid provides developers with APIs and tools for distributed applications, founded by the creators of Dapr and KEDA. It is a remote-first startup backed by top VCs, with a collaborative, open-source-driven culture across Europe, North America, and India.
Provide guidance and mentorship to a team of software engineers.
Collaborate cross-functionally with product, design, and data science to achieve business outcomes.
Hire, nurture, and oversee engineering teams while fostering an inclusive culture.
Tailscale is making safe connection effortless by delivering software that securely interconnects people and devices. Founded in 2019, it is a fully distributed company backed by Accel, CRV, Insight, Heavybit, and Uncork Capital.
Design and build distributed systems for ingestion, normalization, processing, storage, and delivery of realtime market data.
Build and operate streaming solutions handling event ordering, timestamps, duplicates, replay, gaps, and recovery.
Lead technical decisions, write clear designs, and mentor engineers to deliver reliable data platforms.
Dune is a blockchain data and intelligence provider making onchain finance observable, serving 130+ chains and 1,000+ industry leaders. We're a tight-knit team of ~50 hardworking people across Europe and US timezones, humble yet ambitious.
You will set technical direction for code review, build alignment across Stripe, and mentor engineers on complex projects.
You will build and improve agent harnesses that enable review agents to exercise judgment and safely approve pull requests.
You will develop evaluations comparing agent and human review decisions to improve change safety and developer velocity.
Stripe is a financial infrastructure platform for businesses, enabling millions of companies to accept payments and grow revenue. With a mission to increase the GDP of the internet, Stripe is a large company with thousands of employees and a culture focused on innovation and rigorous thinking.
Partner with product, design, and data science to deliver reliable, low-latency technical solutions.
Own the full software lifecycle from design docs to rollout for major infrastructure initiatives.
Drive engineering best practices, mentor teammates, and leverage AI-integrated tools for efficiency.
Reddit is a community of communities built on shared interests and trust, hosting open and authentic conversations. With 100,000+ active communities and ~130 million daily active users, it is one of the internet's largest sources of information.
Design, build, and operate distributed Go microservices and media pipelines for real-time ingestion of audio, video, and telephony data.
Integrate with communication platforms (Zoom, Teams, Webex) and protocols (SIPREC, RTP, WebRTC) to acquire and deliver data to downstream analytics engines.
Lead projects from architecture through production support, diagnosing complex distributed systems issues and improving reliability.
Pindrop is a cybersecurity company delivering continuous identity verification across voice, video, and digital interactions. Backed by leading investors like Andreessen Horowitz, IVP, and CapitalG, its technology protects billions of high-risk interactions for financial institutions and insurers.
Transform research-grade ML code into production-ready, scalable software systems.
Take ownership of end-to-end ML deployment pipelines including data ingestion, feature engineering, and monitoring.
Work closely with researchers and engineers to translate research objectives into robust production solutions.
Our partner is a company in the AI/ML and financial technology space, operating with a distributed international team. They foster a collaborative, entrepreneurial culture with a focus on innovation and high-impact work.