Senior Node.js Developer (Blockchain Project)

About the Position

Senior Node.js Developer (Blockchain Project)

Remote

Full-time

Vacancy Description

We are looking for a Node.js Developer to join IdeaSoft and contribute to a large-scale blockchain project.

In this role, you will work on backend development for a blockchain-based ecosystem, building scalable services, integrating blockchain components, and contributing to the development of secure and reliable backend solutions. This position is a good fit for an engineer who has strong Node.js experience, understands backend architecture, and is interested in working with real blockchain products, not just theoretical Web3 concepts.

Tech Stack

• Node.js / TypeScript
• NestJS
• PostgreSQL, Redis / Valkey
• L2 blockchain (interaction with other networks)
• Docker, Kubernetes (bare-metal & cloud infrastructure)

Responsibilities

• Write efficient, maintainable code
• 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
• Foster a collaborative and innovative development environment
• Perform cross code reviews with team members
• Properly maintain documentation

Requirements

• 4+ years of experience with server-side JS/TS
• 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 in various implementations
• 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/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

Why IdeaSoft

What We Offer

• Competitive compensation
• Social package (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
• Personal development and professional growth opportunities
• Work with talented, ambitious and family-feel team
• Educational possibilities: corporate courses, knowledge hubs, and in-house English classes
• Compensation for your professional certification & support for your learning activities
• Opportunity to choose IT equipment you like
• Corporate social responsibility

Would you like to join us?

Please send your resume for our review, and we will be in touch with you soon.

Thank you for reaching out!

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