Salary
$82k – $97k per year
Location
Hybrid (Poland)
Confirmed on the employer's own hiring board on Oct 31, 2026. First seen by Alion on Oct 28, 2026. Link Group scores B on the Alion truth index.
Overview
Company
Impact
Profile match
Link Group is a Polish technology services company founded in Warsaw in 2016 that builds and supplies engineering teams to clients across Europe. Its model combines body leasing and managed teams with delivery of complete software, cloud and cybersecurity projects, drawing on a large bench of contractors rather than a fixed permanent staff. The company works heavily in financial services, telecommunications and public sector projects, and has built a specialisation in blockchain and distributed ledger engineering alongside more conventional cloud and application development work.
Blockchain Developer
Role Overview
We are looking for a Blockchain Developer to design, develop, and maintain blockchain-based applications and decentralized solutions. The ideal candidate has strong software engineering skills, experience with smart contracts, and an understanding of blockchain architecture and security principles.
Responsibilities
- Design, develop, test, and deploy blockchain applications and smart contracts.
- Build and maintain decentralized applications (dApps) and blockchain integrations.
- Work with blockchain protocols, distributed systems, and cryptographic mechanisms.
- Develop and integrate APIs connecting blockchain solutions with external systems.
- Optimize smart contract performance, scalability, and transaction costs.
- Conduct code reviews, testing, and security assessments to ensure code quality.
- Collaborate with product managers, architects, and other developers to deliver reliable solutions.
- Stay up to date with emerging blockchain technologies and industry best practices.
Requirements
- Professional experience in software development, preferably in blockchain projects.
- Knowledge of blockchain architecture, distributed ledgers, and consensus mechanisms.
- Hands-on experience developing and deploying smart contracts.
- Proficiency in at least one relevant programming language, such as Rust, Python, Go, or JavaScript/TypeScript.
- Experience with blockchain development frameworks, APIs, and testing tools.
- Understanding of cryptography, wallet integrations, and blockchain security.
- Familiarity with Git, automated testing, and CI/CD practices.
- Good problem-solving skills and the ability to work independently and collaboratively.
Nice to Have
- Experience with Ethereum, EVM-compatible networks, or other blockchain platforms.
- Knowledge of Web3 libraries and tools, such as ethers.js, Hardhat, or Foundry.
- Experience with DeFi, tokenization, NFTs, or other blockchain use cases.
- Familiarity with Layer 2 solutions, cross-chain integrations, and scalability mechanisms.
- Experience with cloud infrastructure and containerization technologies.
- Understanding of smart contract auditing and security best practices.
What We Offer
- The opportunity to work on innovative blockchain solutions.
- A collaborative engineering environment.
- Opportunities for professional development and learning.
- The chance to contribute to the design and implementation of modern distributed systems.
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