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Senior Node.js Developer

location-pointer-icon Europe
Node.js
remote

We are looking for a Senior Node.js Developer (Blockchain Project).

We are building a next-generation ecosystem with a blockchain as its foundation, a non-custodial wallet, and a stablecoin protocol. After a successful demo, the project is now preparing the core components (blockchain + stablecoin) for launch. In parallel, development has started on additional secured projects, including:

  • A document management system,
  • A country-specific solution,
  • An e-invoicing platform,
  • And several other ecosystem modules ready to begin.

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.

Will 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.
IdeaSoft.io
Outsource
10 - 50
Industry
Blockchain, Fintech/Banking
Founded
2016

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