Smart Contract Backend Engineer (External)

Serotonin; Berlin; Hybrid; EUR 70.000 - 90.000; Vollzeit

Zusammenfassung

A cutting-edge payments company in Berlin is seeking a talented Smart Contract Engineer to develop secure and efficient smart contracts using blockchain technology. In this role, you will collaborate with a dynamic team to push the boundaries of digital transactions. The ideal candidate should have 2–4 years of experience, proficiency in Solidity, and a keen understanding of smart contract security practices. This position offers competitive compensation and a flexible working environment.

Leistungen

Competitive salary and equity options

Flexible working hours

Remote-friendly environment

Opportunities for professional growth

Qualifikationen

• 2–4 years of experience in blockchain development focused on smart contracts.
• Proficiency in Solidity and familiarity with the Ethereum Virtual Machine (EVM).
• Strong understanding of security considerations for smart contract development.

Aufgaben

• Design, develop, and deploy smart contracts using Solidity.
• Implement secure and efficient code adhering to best practices.
• Collaborate to integrate smart contracts into the platform.

Kenntnisse

Blockchain development

Smart contracts

Problem-solving

Communication

Tools

Solidity

Hardhat

Truffle

Web3.js

Ethers.js

Jobbeschreibung

Our client is a cutting‑edge company focused on revolutionizing global payments by building a scalable, zero‑fee payment platform secured by Bitcoin. Their innovative technology enables fast, secure, and cost‑effective digital transactions, with the potential to reshape how the world interacts with money. We are looking for a talented Smart Contract Engineer to join their growing team.

This role offers the opportunity to work on innovative blockchain technologies and contribute to the development of secure, efficient, and reliable smart contracts that power our payment ecosystem.

If you’re excited about joining a dynamic and purpose‑driven environment where your ideas can shape the future, we’d love to meet you. Together, we can redefine what’s possible in the world of digital connectivity and data management.

Key Responsibilities:

• Design, develop, and deploy smart contracts for the platform using Solidity or other relevant programming languages.
• Implement secure and efficient code while adhering to best practices for smart contract development.
• Collaborate with backend and frontend engineers to integrate smart contracts into the platform.
• Perform rigorous testing, debugging, and auditing of smart contracts to ensure security and reliability.
• Stay informed about the latest developments in blockchain and smart contract technologies.
• Contribute to the documentation of smart contract architecture and processes.
• Participate in code reviews to maintain high‑quality standards across the codebase.

Key Requirements:

• 2–4 years of experience in blockchain development, with a strong focus on smart contracts.
• Proficiency in Solidity and familiarity with Ethereum Virtual Machine (EVM).
• Understanding of security considerations and best practices for smart contract development.
• Experience with tools such as Hardhat, Truffle, or Foundry for development and testing.
• Familiarity with Web3.js, Ethers.js, or similar libraries for interacting with blockchain networks.
• Strong problem‑solving skills and attention to detail.
• Excellent communication and collaboration skills.

Preferred Qualifications

• Experience with Bitcoin Layer 2 solutions or similar blockchain ecosystems.
• Contributions to open‑source blockchain or smart contract projects.
• Understanding of financial systems, payment protocols, or decentralized finance (DeFi).

What We Offer

• Competitive salary and equity options.
• Flexible working hours and remote‑friendly environment.
• The chance to work on cutting‑edge technology with a talented, passionate team.
• Opportunities for professional growth and learning.