Blockchain Developer

MastarRec is hiring a Blockchain Developer to support innovative financial technology platforms operating across the United States. This role focuses on building, scaling, and securing modern financial systems in a fast -paced environment.

Key Responsibilities

• Design, develop, and deploy  smart contracts

using  Solidity

on  Ethereum

and compatible EVM blockchains.

Build and maintain  dApps

, including wallets, exchanges, and DeFi protocols.

Integrate  blockchain technologies

with existing systems, APIs, and cloud infrastructures.

Design, build, or manage FinTech platforms and solutions

Collaborate with engineering, product, and compliance teams

Ensure regulatory and security best practices

Support scalability, performance, and reliability

Requirements

Required Skills

FinTech or financial systems knowledge

Data, risk, or software development expertise

Strong analytical and communication skills

Experience with  blockchain frameworks

such as  Truffle

,  Hardhat

Strong understanding of  cryptographic principles

,  decentralized networks

, and  consensus mechanisms

Desired Skills

Exposure to  Polkadot

,  Cosmos

, or  Solana

ecosystems.

Experience with  Layer 2 solutions

(e.g., Arbitrum, Optimism).

Understanding of  zero -knowledge proofs

(zk -SNARKs / zk -Rollups).

Payments, lending, or blockchain experience

Regulatory or compliance knowledge

Familiarity with  containerization

(Docker) and  CI / CD pipelines

Benefits

Job Benefits

Competitive base salary plus  crypto or equity incentives

Flexible remote -first

work environment

Competitive salary and bonus potential

Health, dental, and vision insurance

Equity or incentive programs (role dependent)

Comprehensive  health and wellness support