STDev Armenia

STDev is hiring a Blockchain Developer. 
 

Core technical requirements:
- Java
- Spring Boot
- SQL
- 3+ years of production Bitcoin/blockchain experience
- Strong Bitcoin network and transaction knowledge
- Manual transaction construction
- UTXO management and coin selection
- PSBT / BIP-174
- SegWit
- Bitcoin Script and address types
- Secure wallet key management
- Multisig architecture and coordination
- BIP-48 and BIP-67
- P2WSH
- PSBT combination and finalisation
- Fee estimation and mempool analysis
- RBF and CPFP
- Witness data assembly
- BIP-143
- DER signature encoding and low-S enforcement
- Transaction lifecycle and stuck-transaction remediation
- UTXO indexing and balance computation
- UTXO consolidation
- Deposit and address monitoring
- HD wallet gap-limit handling
- Change-address derivation and address reuse prevention
- Descriptor-based wallet import and recovery
- Bitcoin finality, confirmation depth, dust limits and double-spend detection
- Experience designing systems combining backend, database and Bitcoin node
- Production Bitcoin custody or wallet infrastructure experience

Additional engineering requirements:
- TDD and/or BDD
- Domain-Driven Design
- Monorepo architectures
- Shared libraries
- Coordinated CI/CD pipelines

STDev is hiring a Senior Crypto Developer. 

Core technical requirements:

- Strong Rust experience
- Hands-on HSM experience
- Experience coding against Thales, IBM, Utimaco, Securosys, and/or cloud HSMs
- Understanding of what code can be executed directly on an HSM
- Experience designing and engineering cryptographic wallet technologies, especially HSM-based wallets
- Knowledge of public blockchains such as BTC, ETH and/or SOL
- HSM-based transaction signing using ECDSA, EdDSA, and Schnorr
- PKCS#11
- Secure coding practices
- GitHub

Preferred experience:

- MPC wallets
- Post-quantum hardening
- Cloud development
- Azure
- GitOps
- CI/CD with Kubernetes
- Staking, lending, CeFi, DeFi, and ZK-rollups
- Traditional financial markets