Senior Node.js Developer (Blockchain Project)

As a Senior Node.js Developer at IdeaSoft, you will contribute to a large-scale blockchain project, working on backend development for a blockchain-based ecosystem. You will build scalable services, integrate blockchain components, and develop secure and reliable backend solutions. This role is a good fit if you have strong Node.js experience, understand backend architecture, and are interested in working with real blockchain products.

What you'll do

• Write efficient, maintainable code for blockchain backend systems
• Design and implement independent, self-sufficient components efficiently
• Participate in architectural discussions and technical decision-making
• Identify potential technical risks and develop mitigation strategies
• Ensure effective knowledge sharing and maintenance within the team
• Perform code reviews with team members
• Maintain documentation to support the codebase

What you bring

• 4+ years of experience with server-side JavaScript/TypeScript
• Solid understanding of TypeScript and JavaScript fundamentals and internals
• Experience with Express, NestJS, or similar frameworks
• Strong understanding of asynchronous programming, event-driven architecture, and non-blocking I/O
• Understanding of different types of scaling and microservice architectures
• Hands-on experience with Web3.js or Ethers.js for interacting with Ethereum or other EVM-compatible networks
• Understanding of smart contracts
• Familiarity with popular blockchains such as Ethereum, Binance Smart Chain, or Layer 2 solutions
• Expertise in data structures, algorithms, and software design patterns
• Solid understanding of software architectural patterns
• Experience with relational databases, especially PostgreSQL
• Deep experience with SQL, including schema and query design and optimization
• Experience with ORMs
• Familiarity with Docker, containerization, and orchestration tools
• Strong analytical and problem-solving skills
• Proficiency in writing unit, integration, and end-to-end tests
• Conversational English

Nice to have

• Familiarity with DevOps practices and Infrastructure-as-Code (IaC) tools
• Understanding of consensus algorithms, cryptographic principles, and decentralized applications (dApps)
• Familiarity with Matter Labs' zk stack
• Experience in the FinTech domain
• Understanding of different rollup technologies
• Openness to technology stack changes and adaptability

What we offer

• Competitive compensation
• Social package including 24 working days of annual leave and 5 paid sick days
• Flexible working hours
• Challenging projects in diverse business domains and a variety of tech stacks
• Educational possibilities through corporate courses, knowledge hubs, and in-house English classes
• Compensation for professional certifications and support for your learning activities
• Work with a talented, ambitious team with a family-feel environment

About IdeaSoft

IdeaSoft is a software development company working on large-scale blockchain projects and other challenging initiatives across diverse business domains.