Web3 Infrastructure Engineer (BNB Chain Middleware)

Canada
Remote
Posted May 28, 2026
1 position

Opens an external site

Employment type: Full-time
Experience level: Mid-level · 2+ years
Posting language: English
Working hours: 40 hours per week

Job summary

Develop and maintain the BNB Chain Middleware Stack to simplify data fetching and smart contract interactions for dApps. Design reusable SDKs and UI components to reduce friction for developers launching crypto features.

Job details

ABOUT THE ROLE We're looking for a full-stack engineer who operates at the intersection of AI Agents and blockchain. You'll build scalable, high-performance AI-driven applications, deeply integrate cutting-edge LLM models, and bring strong engineering depth across both Web2 and Web3 stacks — all in service of building next-generation decentralized intelligent applications. This is not a pure frontend or backend role. We're looking for a true full-stack architect and builder. -------------------------------------------------------------------------------- RESPONSIBILITIES * Core Application Development: Design and implement full-stack applications and SDKs centered on blockchain middleware and infrastructure — deeply embedding AI Agent capabilities (LLM workflow orchestration, RAG, Multi-Agent collaboration) into on-chain data processing, cross-chain protocol integration, and smart contract interaction; and build the integration layer between AI agents and blockchain tooling (MCP, Tool Calling, native SDKs, etc.). * Backend Engineering: Build highly available, scalable backend services using Python, Node.js, or equivalent modern frameworks. * Frontend Development: Deliver high-quality, user-friendly interfaces using modern frontend frameworks (e.g., React). * Web3 Integration: Independently develop smart contracts and integrate seamlessly with major blockchain networks (e.g., EVM-compatible chains). * Architecture & Standards: Draw on hands-on experience to define engineering standards, establish reusable architecture patterns, and drive the team's technical growth. * Vibe Coding Practice: Apply Specification Engineering as a methodology to drive AI-assisted delivery (Cursor, Claude Code) with discipline; codify best practices into team-wide standards (CLAUDE.md, .cursor/rules, prompt template libraries) under version control to continuously raise the team's collaborative efficiency. * Technical Insight & Innovation: Stay ahead of the AI + blockchain frontier, produce actionable technical insights, and drive continuous improvement of products and solutions. -------------------------------------------------------------------------------- REQUIREMENTS (AT LEAST 3 REQUIRED) * Frontend & Backend Proficiency: Fluent in at least one frontend framework (e.g., React) and one backend language (Python or Node.js); experienced in RESTful / GraphQL API design and performance tuning; disciplined about writing unit, integration, or E2E tests as a quality guarantee. * AI Engineering Depth: Deep understanding of LLM capabilities, prompt engineering, and inference cost/latency trade-offs; proven experience taking AI features from prototype to production, including observability, fault tolerance, and evaluation pipelines. * Web3 Engineering: Hands-on experience deploying and debugging smart contracts on mainnet or testnet; solid grasp of on-chain data structures and common security vulnerabilities — not just contract syntax. * Full-Stack Delivery: Track record of independently shipping complete AI-driven applications or SDKs — owning tech selection, architecture, and implementation end-to-end without relying on others to catch the gaps. * Engineering Culture: Experience leading or contributing to team engineering standards (e.g., code review processes, technical documentation, AI-assisted development guidelines); able to turn personal expertise into team-wide assets. -------------------------------------------------------------------------------- NICE TO HAVE The following will position you for a more senior scope and impact: * AI Protocols & Ecosystem: Hands-on experience building MCP Servers or integrating multi-agent collaboration protocols (e.g., A2A); familiar with the evolving landscape of AI tooling standards. * Blockchain Infrastructure & Middleware: Deep understanding of mainstream blockchain infrastructure and protocol layers — including L2 Rollup architecture (OP Stack / zkEVM), cross-chain interoperability (LayerZero, CCIP, IBC), on-chain payment protocols (x402, streaming payments), and privacy protocols (ZK proof systems, Aztec, private DeFi) — with engineering experience in one or more of these areas. * AI Product Thinking: Ability to independently identify AI opportunities in business contexts and drive product design and iteration from a technical perspective. * Open Source / Community Presence: Active open source contributions or visible technical influence in the AI or blockchain space (writing, talks, GitHub, etc.). * 0-to-1 Experience: Background in startups or greenfield product builds; able to validate ideas quickly and ship under resource constraints. \n \n

What you’ll do

Requirements

Requires strong mastery of TypeScript/JavaScript and familiarity with core crypto primitives and EVM-compatible chains. Bonus points for experience with React, Next.js, Golang, or Rust.