Senior Node.js Developer (Blockchain Project)
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)
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.
Would be a plus
- 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.
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.
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.