Skill Profile

Applied Cryptography

This skill defines expectations across roles and levels.

Blockchain & Web3 Blockchain Fundamentals

Roles

where this skill appears

Levels

structured growth path

Mandatory requirements

the other 5 optional

Blockchain & Web3

Blockchain Fundamentals

2/22/2026

Choose your current level and compare expectations. The items below show what to cover to advance to the next level.

What is Expected at Each Level

The table shows how skill depth grows from Junior to Principal. Click a row to see details.

Role	Required	Description
Blockchain Developer		Understands hash functions (SHA-256, Keccak-256), digital signatures (ECDSA, EdDSA), and key derivation (BIP-32/39). Uses cryptographic libraries for message signing and verification.

Role	Required	Description
Blockchain Developer		Applies Merkle proofs for blockchain data verification. Implements commitment schemes and VRF for on-chain randomness. Integrates BLS signatures for aggregation in validator networks.

Role	Required	Description
Blockchain Developer		Designs cryptographic protocols for blockchain infrastructure: threshold signatures, MPC key management, zk-proof generation. Audits cryptographic primitives in blockchain protocols.

Role	Required	Description
Blockchain Developer		Defines cryptographic standards for the blockchain organization. Evaluates post-quantum cryptography readiness. Mentors engineers on applied cryptography and establishes security guidelines.

Role	Required	Description
Blockchain Developer		Researches advanced cryptographic schemes for blockchain: MPC, FHE, verifiable delay functions. Shapes long-term strategy for post-quantum algorithm transition for enterprise platform.

Junior 1 requirements

Blockchain Developer

Understands hash functions (SHA-256, Keccak-256), digital signatures (ECDSA, EdDSA), and key derivation (BIP-32/39). Uses cryptographic libraries for message signing and verification.

Middle 1 requirements

Blockchain Developer

Applies Merkle proofs for blockchain data verification. Implements commitment schemes and VRF for on-chain randomness. Integrates BLS signatures for aggregation in validator networks.

Senior 1 requirements

Blockchain Developer

Designs cryptographic protocols for blockchain infrastructure: threshold signatures, MPC key management, zk-proof generation. Audits cryptographic primitives in blockchain protocols.

Lead / Staff 1 requirements

Blockchain Developer

Defines cryptographic standards for the blockchain organization. Evaluates post-quantum cryptography readiness. Mentors engineers on applied cryptography and establishes security guidelines.

Principal 1 requirements

Blockchain Developer

Researches advanced cryptographic schemes for blockchain: MPC, FHE, verifiable delay functions. Shapes long-term strategy for post-quantum algorithm transition for enterprise platform.

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