Senior Blockchain Engineer

Other

-, Warszawa+4 Locations

DCG

Full-time

B2B

Senior

Remote

Tech stack

English

C1

Polish

C2

Blockchain

advanced

Soroban

regular

Ethereum

regular

Rust

regular

Anchor

regular

Stellar

regular

Solidity

regular

Job description

As a recruitment company, DCG understands that every business is powered by experienced professionals. Our management style and partnership approach enable us to meet your needs and provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for:

Senior Blockchain Engineer

Responsibilities:

• Design, develop, and maintain smart contracts on Ethereum (Solidity) and Solana (Rust + Anchor)

• Build secure and efficient blockchain-based solutions, applying best practices and patterns (e.g., diamond pattern, proxy, upgradable)

• Work with blockchain development tools such as Hardhat, Foundry, and Anchor

• Develop within the Stellar ecosystem using Soroban and adapt to its unique requirements

• Create robust solutions while avoiding common pitfalls specific to each platform

• Write custom automation scripts in TypeScript to support development and deployment workflows

• Write and maintain comprehensive test suites, including unit, integration, and fuzz tests

• Ensure code quality and security standards are met throughout the development lifecycle

• Collaborate with external audit firms or prepare codebases for security audits

• Work with fungible tokens and blockchain ecosystem components

• Implement and maintain CI/CD pipelines for smart contract development and deployment

• Stay up to date and work with various blockchain protocols and technologies beyond Ethereum and Solana

Requirements:

• Minimum 5 years of experience in IT, including at least 3 years of commercial experience working with smart contracts

• Strong proficiency in Solidity and a solid understanding of the Ethereum Virtual Machine (EVM)

• Experience working with development environment such as Hardhat or Foundry

• Practical knowledge of Rust and the Anchor framework, specifically in the context of Solana development

• Experience working with Soroban and the Stellar ecosystem

• Familiarity with design patterns (such as diamond pattern, proxy, upgradable)

• Ability to design solutions that avoid common platform-specific problems

• Knowledge of TypeScript, with the ability to create custom automation scripts as needed

• Experience writing and maintaining various types of tests (unit, integration, fuzz)

• Strong focus on code quality and security

• Experience working with fungible tokens

• Experience collaborating with external audit firms or preparing codebases for audits

• Knowledge of CI/CD systems

• Familiarity with other blockchain protocols and components of the broader blockchain ecosystem

• Knowledge of English at B2 level (minimum)

Offer:

• Private medical care

• Co-financing for the sports card

• Constant support of dedicated consultant

• Employee referral program

Published: 14.08.2025

Office location