Blockchain Developer (Solidity & Rust) (Crypto / Blockchain)

Caiz; Frankfurt; Hybrid; EUR 60.000 - 100.000; Vollzeit

Zusammenfassung

A pioneering financial technology company in Frankfurt is seeking an experienced Blockchain Developer. You will play a crucial role in developing smart contracts and blockchain protocols, utilizing your skills in Solidity and Rust. The ideal candidate has a strong background in blockchain development and a passion for innovative solutions. Join us to contribute to a groundbreaking ecosystem that combines technology and ethical finance.

Leistungen

Competitive Financial Compensation

Work Flexibility

Annual Holidays

Relocation Assistance

Professional Development

Employee Recognition

Inclusive & Collaborative Culture

Qualifikationen

• 3+ years of blockchain development with hands-on coding in Solidity and Rust.
• Experience deploying smart contracts on Ethereum or similar EVM chains.
• Familiarity with DeFi protocols and token standards (ERC-20, ERC-721, etc.).

Aufgaben

• Design, develop, and deploy smart contracts using Solidity.
• Build and maintain Rust-based blockchain modules.
• Conduct code reviews and vulnerability assessments for blockchain code.

Kenntnisse

Solidity

Rust

Smart contract design

Blockchain architecture

Cryptography

Version control (Git)

Problem-solving

Ausbildung

Bachelor’s degree in Computer Science

Tools

Web3.js

Ethers.js

Hardhat

Truffle

Jobbeschreibung

Overview

Caiz – The First Islamic Ecosystem Built on Blockchain. Revolutionizing Islamic finance with blockchain technology. Caiz aims to create a Fiqh-compliant financial ecosystem that provides our community with fair and easy access to ethical financial products and services.

Our native coin, Caizcoin, fuels the Caizblockchain. With Caizcoin, you can make seamless payments, store value, and interact with a range of ethical financial products. The Caizapp gives users complete control over their digital assets. We are expanding our dynamic workforce in a collaborative, fast, and compliant money transfer environment.

Why join Caiz?

• Innovative & Purpose-Driven: Combining advanced blockchain technology with Islamic finance to reshape the future of finance.
• Ethical Impact: A culture of ethics, integrity, fairness, transparency, and respect.
• Growth & Learning: Opportunities to learn, innovate, and grow within a supportive environment.
• Global Vision, Local Impact: Focus on inclusive, sustainable finance with global reach.
• Collaborative Culture: Teamwork with professionals dedicated to ethical financial innovation.
• Secure & Transparent Environment: Emphasis on trust, security, and high standards in crypto operations.

Role and Responsibilities

We are seeking a highly skilled Blockchain Developer with expertise in Solidity and Rust to join our engineering team. You will help develop and optimize smart contracts, blockchain protocols, and DeFi components powering the Caiz ecosystem. You will work on Ethereum-compatible smart contracts and Rust-based custom chain logic to contribute to secure, scalable, and innovative blockchain infrastructure.

Responsibilities :

• Design, develop, and deploy smart contracts using Solidity on EVM-compatible blockchains.
• Build and maintain Rust-based blockchain modules (Substrate or Solana-compatible platforms).
• Contribute to the design of custom blockchain protocols and token standards.
• Write secure, gas-optimized, and well-tested smart contracts.
• Collaborate with frontend and backend teams to integrate blockchain components into products.
• Conduct code reviews, audits, and vulnerability assessments for blockchain code.
• Analyze and improve performance, security, and scalability of the Caiz blockchain.
• Stay up-to-date with latest blockchain developments, including EIPs, cryptographic primitives, and layer-2 solutions.

Qualifications and Experience

Experience

• 3+ years of blockchain development with hands-on coding in Solidity and Rust.
• Strong understanding of smart contract design, blockchain architecture, cryptography, and consensus mechanisms.
• Experience deploying smart contracts on Ethereum or similar EVM chains.
• Proficiency in Rust for blockchain environments such as Substrate or Solana.
• Familiarity with Web3.js, Ethers.js, Hardhat, Truffle, and related tools.
• Understanding of DeFi protocols, token standards (ERC-20, ERC-721, etc.), and L1/L2 ecosystems.
• Experience with version control (Git) and CI/CD workflows.
• Strong problem-solving skills and ability to write clean, maintainable code.

Preferred Skills

• Experience building or contributing to a Layer 1 or Layer 2 blockchain.
• Knowledge of blockchain security best practices and audit processes.
• Exposure to zero-knowledge proofs (ZK), rollups, or cross-chain bridges.
• Experience in agile or startup environments.
• Understanding of Islamic finance or Sharia-compliant financial principles is a plus.

Education

Level of studies: Bachelor’s degree in Computer Science, Software Engineering, Mathematics, or a related technical field. A Master’s degree or equivalent experience in blockchain development is a plus.

Language

Language Requirements: Fluent in English

Benefits

Benefits at Caiz :

• Competitive Financial Compensation: Compensation reflecting the value of your work.
• Work Flexibility: Option to work from home, in the office, or abroad.
• Annual Holidays: Generous paid time off.
• Relocation Assistance: Support for employees relocating.
• Professional Development: Training, certifications, and career growth opportunities.
• Employee Recognition: Programs to celebrate achievements.
• Inclusive & Collaborative Culture: Supportive and diverse environment.
• Diversity, Equality, and Inclusion: Commitment to a fair workplace for all.

Don’t miss this opportunity – apply now and be part of the Caiz revolution.

Caiz is the first Islamic ecosystem built on blockchain. The mission is to create a Fiqh-compliant financial ecosystem with ethical products and services. Caizcoin is the native coin used on the Caizblockchain, enabling payments, value storage, and interaction with ecosystem products. The Caizapp serves as the centerpiece of the Caizecosystem, providing complete control over digital assets and access to ecosystem features.