Hays company
The client is one of the Big4 companies
Basic information:
Location: 100% remote (from Poland)
Rate: open
Type of work: B2B contract
Length: long-term project
Recruitment process: 2 stages
English: B2+/C1
Luxmed, MultiSport, equipment provided by client
The Digital team is a “software house” within a large consulting firm, combining the dynamism and innovation of start-ups with the infinite capabilities of the company's global network. The team works in cutting-edge technologies such as GenAI, AI agents and co-pilots, cloud computing, chatbots, data lake and advanced machine learning algorithms, all built on a foundation of application development in various frontend and backend technologies.
Role:
- Development and optimization of blockchain protocols using the Rust language.
- Design and implement advanced cryptographic mechanisms and solutions
- Work on Layer 1 and Layer 2 blockchain solutions, ensuring high performance and security
- Developing and maintaining smart contracts (e.g., Substrate)
- Optimizing blockchain storage solutions and working with databases such as RocksDB
- Ensuring interoperability between different blockchain networks
Leading technical discussions, mentoring junior engineers and conducting code reviews
Expert level:
- 2+ years of experience in distributed systems and blockchain development
- Understanding of consensus mechanisms (PoW, PoS, BFT, etc.) and their implementation
- Experience with cryptographic security, including hashing, digital signatures and zero-knowledge proofs
- Experience in tokenomics design and blockchain economic models
- Experience in developing Layer 1/Layer 2 blockchain solutions and cross-chain interoperability
- Ability to design and implement secure cryptographic systems
Senior Level:
- 7+ years of experience in Rust and distributed systems
- Knowledge of cryptographic and blockchain security principles
- Experience in consensus algorithm design and optimization
- Experience with smart contracts (Substrate, EVM-based platforms, etc.)
- Proficiency in performance profiling and optimization tools (Flamegraph, perf)
- Ability to lead technical discussions, conduct code reviews and mentor engineers
Intermediate level:
- 2-3 years of experience in Rust development
- Basic knowledge of cryptographic techniques such as hashing and digital signatures
- Experience working with consensus algorithms (PoW, PoS, etc.)
- Knowledge of basic blockchain data structures (Merkle Trees, DAGs)
- Understanding of database systems (e.g. RocksDB) and their role in blockchain
- Experience in testing and debugging Rust tools
Team: international, mid-senior
Hays Poland sp. z o.o. is an employment agency registered in a registry kept by Marshal of the Mazowieckie Voivodeship under the number 361.
