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Web3 Js Jobs (NOW HIRING)

Octagon Talent

Lead Backend Engineer

Miami, FL · Remote

... Web3.js) is a big plus · Solid experience with WebSockets and real-time messaging systems · Proven ability to design and optimize time-series data solutions · Familiarity with cloud-native ...

D3

Sr. Fullstack Engineer

Los Angeles, CA

Web3 libraries (web3.js, ethers.js, wagmi). * Event-driven architecture and asynchronous processing. * Experience with APIs, microservices, and distributed systems. * Basic understanding of ...

ITrade STEM

Lead Backend Engineer

Miami, FL · Remote

... Web3.js) is a big plus · Solid experience with WebSockets and real-time messaging systems · Proven ability to design and optimize time-series data solutions · Familiarity with cloud-native ...

Superstate

Staff Full-Stack Engineer

New York, NY

Web3 frontend stack, such as web3.js, ethers.js, etc. * Experience creating component libraries * Functional programming language experience * Postgres or SQL * Rust * Experience with Solidity ...

Orbofi

Familiarity with Web3.js or Ethers.js libraries for interacting with blockchain networks. * Knowledge of blockchain security best practices and experience conducting smart contract audits.

ITrade STEM

Lead Backend Engineer

Miami, FL · On-site

... Web3.js) is a big plus • Solid experience with WebSockets and real-time messaging systems • Proven ability to design and optimize time-series data solutions • Familiarity with cloud-native ...

D3

Sr. Fullstack Engineer

Web3 libraries (web3.js, ethers.js, wagmi). * Event-driven architecture and asynchronous processing. * Experience with APIs, microservices, and distributed systems. * Basic understanding of ...

DRW

Senior Software Engineer - DeFi

Chicago, IL · On-site

$126K - $166K/yr

... js or web3.js • Familiarity with DeFi protocols: AMMs (Uniswap), lending (Compound), options/structured products, or staking • Understanding of multi-chain architectures -- L1s, L2 rollups ...

Hobbsnews

Principal Engineer - Stablecoin

Jersey City, NJ · On-site

$156.50 - $230/hr

Familiarity with tools like Truffle, Hardhat, Remix, Web3.js, or Ethers.js * Experience with DevOps tools including Terraform * Knowledge of emerging blockchain trends, protocols, and experience with ...

DeFiner Inc

Experience with blockchain and blockchain libraries and tools such as web3.js, and MetaMask. * Experience with designing databases, especially PostgreSQL, and providing access through APIs to the ...

Powered by Pioneer

Developer Relations Intern

North, SC · Remote

$8 - $16/hr

Experience with Solidity, Web3.js, or other blockchain development tools. * Familiarity with DeFi, AI, and other blockchain use cases on BNB Chain. * Multilingual abilities or experience working in ...

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How much do web3 js jobs pay per hour?

As of Aug 22, 2026, the average hourly pay for web3 js in the United States is $58.23, according to ZipRecruiter salary data. Most workers in this role earn between $49.28 and $63.70 per hour, depending on experience, location, and employer.

What is Web3.js?

Web3.js is a collection of JavaScript libraries that allows developers to interact with the Ethereum blockchain. It enables web applications to read and write data to smart contracts, query blockchain data, and manage user accounts and transactions. Web3.js is commonly used to build decentralized applications (dApps) that run in users’ browsers and communicate with Ethereum nodes. It is a key tool for developers working in the blockchain and decentralized finance (DeFi) space.

How does a Web3.js developer typically collaborate with blockchain engineers and front-end teams during a project?

A Web3 JS developer often acts as a bridge between blockchain engineers, who build and maintain smart contracts, and front-end developers, who design user interfaces. They are responsible for integrating smart contract functionality into web applications, ensuring seamless communication between the blockchain and the user-facing components. Collaboration involves frequent code reviews, shared planning sessions, and troubleshooting issues that arise when connecting decentralized networks to web platforms. This role requires strong communication skills and the ability to translate complex blockchain logic into intuitive user experiences.

What are the key skills and qualifications needed to thrive as a Web3.js developer, and why are they important?

To thrive as a Web3.js Developer, you need solid JavaScript programming skills, a strong understanding of blockchain concepts, and experience integrating decentralized applications (dApps) with Ethereum or similar networks. Familiarity with the Web3.js library, smart contract development (often using Solidity), and tools like Truffle or Hardhat is typically required. Strong problem-solving abilities, attention to detail, and effective communication set outstanding developers apart in this role. These skills ensure secure, scalable, and user-friendly blockchain applications that leverage the latest in decentralized technology.
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Web3 Js jobs near you
Infographic showing various Web3 Js job openings in the United States as of August 2026, with employment types broken down into 87% Full Time, 3% Part Time, and 10% Contract. Highlights an 76% Physical, 6% Hybrid, and 18% Remote job distribution, with an average salary of $121,124 per year, or $58.2 per hour.

Lead Backend Engineer

Octagon Talent

Miami, FL • Remote

Full-time

Re-posted just now

Job description

Octagon Talent Solutions is a full-service technology recruitment and staffing company based in South Florida. We humanize technical recruitment by identifying candidates' long-term career goals and assessing cultural fit when presenting opportunities. Our focus on long-term relationships helps ensure placements that last. 


Our client is a well-funded Web3 fintech startup redefining the future of real-time financial infrastructure. Our platform bridges traditional finance and decentralized systems, enabling seamless, secure, and transparent access to blockchain-powered financial services. They’re not just building APIs — they’re creating the data rails for the decentralized economy, supporting everything from real-time transaction monitoring to decentralized asset management. With deep backing from top VCs and a founding team of fintech and blockchain veterans, we’re scaling fast — and we’re looking for core engineers to shape what comes next.


What You’ll Do


·      Architect, develop, and maintain real-time APIs and backend systems powering crypto trading, DeFi analytics, and digital asset tracking.

·      Build scalable microservices with NestJS and gRPC, and design APIs used by developers, trading platforms, and financial institutions.

·      Manage streaming pipelines with Kafka to process high-throughput event data from blockchains and financial markets.

·      Implement WebSocket-based services using Bun to push live updates (price feeds, wallet events, smart contract logs).

·      Store and optimize time-series data using QuestDB for hot access and ClickHouse for long-term analytics and compliance reporting.

·      Secure and orchestrate APIs through APISIX, with features like rate limiting, authentication, and request transformation.

·      Contribute to infrastructure scalability, observability, and resilience in a mission-critical, high-uptime environment.

·      Collaborate with smart contract developers, frontend engineers, and data scientists to ship features end-to-end.


The Tech Stack


You’ll be working with bleeding-edge tools purpose-built for real-time finance:

·      NestJS – Modular TypeScript backend framework

·      gRPC + Protobuf – Blazing fast internal service communication

·      Kafka – Event streaming for blockchain and financial data ingestion

·      Bun – Ultra-fast runtime for high-frequency WebSocket communication

·      QuestDB – Low-latency time-series database for recent data

·      ClickHouse – Scalable analytics database for long-term storage

·      APISIX – Cloud-native API Gateway


What We’re Looking For


·      5+ years in backend engineering, ideally with a focus on financial systems or high-throughput platforms

·      Strong proficiency in TypeScript, Node.js, and frameworks like NestJS

·      Experience with event-driven architecture and tools like Kafka

·      Comfort working with gRPC, Protocol Buffers, and microservices

·      Knowledge of blockchain fundamentals, smart contracts, or Web3 APIs (e.g., Ethers.js, Web3.js) is a big plus

·      Solid experience with WebSockets and real-time messaging systems

·      Proven ability to design and optimize time-series data solutions

·      Familiarity with cloud-native infrastructure (Docker, Kubernetes, CI/CD pipelines)

·      Security-first mindset — especially around financial and cryptographic systems

·      Self-starter attitude, with the ability to thrive in a fast-moving startup environment


What They Offer


·      Top-of-market salary + possible equity + crypto bonuses

·      Remote-first, async-friendly culture with flexible hours

·      The chance to work on the cutting edge of finance and Web3

·      A technical leadership role with influence over architecture and roadmap

·      Collaborative, transparent team culture with real ownership


Join the Future of Finance



If you’re passionate about building real-time, decentralized financial infrastructure with an elite engineering team, we’d love to meet you.