About Cryptape
Cryptape is a pioneering team in the blockchain space, leading the development of Nervos CKB (Common Knowledge Base) — a high-performance, scalable Layer 1 blockchain protocol. We are committed to pushing the boundaries of decentralized systems through rigorous engineering and open collaboration. If you're passionate about low-level technical challenges and building future-facing infrastructure, we invite you to join the CKB engineering team at Cryptape.
As a member of the CKB engineering team, you’ll contribute to core system development, such as network protocol optimization (Fiber), virtual machines (CKB-VM), and smart contract tooling on CKB. We welcome engineers from diverse backgrounds — embedded systems, algorithm optimization, multimedia codecs, CPU architecture, and beyond. Prior blockchain experience is not required, but a strong interest in systems programming and a willingness to learn are essential.
Responsibilities
- Develop and implement core functionalities of the Nervos CKB protocol.
- Write and optimize smart contracts in Rust, leveraging CKB’s unique Cell model for flexible state management.
- Optimize low-level code performance, focusing on resource efficiency and execution in constrained environments.
- Collaborate with the global open-source developer community to evolve the CKB ecosystem.
- Write clean, maintainable code and participate in high-standard code reviews.
- Explore and implement cutting-edge technologies in the blockchain space.
Requirements
- Strong grasp of computer science fundamentals.
- Proficiency in at least one systems programming language (e.g., Rust, C, C++).
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Solid experience in low-level development in one or more of the following areas:
- Embedded systems or resource-constrained environments
- Algorithm design and performance optimization
- Multimedia codec or high-performance data processing
- CPU instruction set development or related system-level optimization
- Ability to analyze and improve performance in terms of execution speed, memory usage, and latency.
- Excellent analytical and problem-solving skills, with the ability to break down complex problems and design practical solutions.
- Self-driven and quick to learn through documentation and hands-on experimentation (e.g., picking up Rust or CKB dev framework).
- Curiosity and enthusiasm for blockchain and decentralized technologies, with a continuous learning mindset.
Nice to Have
- Familiarity with the RISC-V instruction set, or experience with virtual machine/simulator development.
- Contributions to open-source projects (e.g., GitHub PRs, library maintenance).
- Knowledge of cryptographic algorithms (e.g., Secp256k1, SHA-256) or secure coding practices.
- Strong English reading and writing skills.
Why Join Us
- Hardcore Challenges: Tackle complex problems in virtual machines, networking, and decentralized systems, leveraging your low-level expertise.
- Global Impact: Build code that powers a leading Layer 1 blockchain, shaping the future of decentralized applications.
- Learn and Grow: Work with world-class engineers and access resources to master blockchain and CKB development.
- Fully Remote: Enjoy flexible, remote work with a globally distributed team.
- Open-Source Culture: Amplify your impact through contributions to Nervos CKB’s open-source ecosystem.
How to Apply
Ready to push the boundaries of systems programming? Send the following to join@cryptape.com:
- Your resume.
- A link to your GitHub or portfolio showcasing relevant low-level projects.
- Optional: A brief note on why you’re excited about low-level development and learning blockchain technology.
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