AI Web3 Backend Engineer – AI Agent Economy

DcentraLab; Barcelona; Híbrido; EUR 50.000 - 80.000; Jornada completa

Descripción de la vacante

A leading Web3 development company in Barcelona is looking for an experienced AI Web3 Backend Engineer to design and build their marketplace of AI agents. You will work with cutting-edge multi-agent frameworks, implement DeFi trading strategies, and collaborate in a remote-first culture. Ideal candidates should have expertise in backend engineering, DeFi protocols, and smart contract engineering.

Servicios

Build foundational infrastructure for AI x Web3 ecosystem

Collaborative environment with engineers and researchers

Flexible collaboration options

Formación

• Deep expertise in DeFi protocols and agentic architectures.
• Strong experience in backend engineering and designing large-scale systems.
• Understanding of cryptographic verification systems.

Responsabilidades

• Architect and implement the AI Agent Marketplace backend.
• Build and maintain multi-agent workflows.
• Integrate MCP servers and A2A protocols.
• Implement DeFi trading strategies on-chain.
• Collaborate with researchers and engineers to shape standards.

Conocimientos

DeFi protocols

Backend engineering

Agentic architectures

Security and decentralization trade-offs

Smart contract engineering

Multi-agent systems

Cryptography

Herramientas

Docker

Kubernetes

Descripción del empleo

Hybrid

We are looking for a AI Web3 Backend Engineer with deep expertise in DeFi protocols, backend engineering, and agentic architectures. You will play a pivotal role in designing and building the marketplace of AI agents, enabling them to collaborate, execute multi-agent workflows, and securely manage funds on-chain. This role requires someone who is as comfortable deploying large-scale backend systems as they are with smart contract engineering and the next-gen agent-to-agent (A2A) protocols that power AI-native Web3 applications. Key Responsibilities

• Architect and implement the Traia.io AI Agent Marketplacebackend and deployment infrastructure.
• Build and maintain multi-agent workflows: utility agents, solver agents, settlement agents, etc.
• IntegrateMCP servers, A2A protocols, and on-chain execution environments.
• Implement DeFi trading strategies through on-chain agent logic and Web3 integrations.
• Work with zk-systems and TLS notarizations to enable verifiable execution and trust guarantees.
• Collaborate with researchers, smart contract engineers, and AI experts to shape AI-on-chain standards.
• Backend engineering expertise: strong experience in designing and deploying distributed systems.
• Agentic architectures: familiarity with multi-agent systems, MCP servers, A2A protocol, and autonomous workflow orchestration.
• Solid knowledge of deployment architectures for agent-based systems (Docker, Kubernetes, enclaves, secure containerization).
• Understanding of cryptography and verification systems (zk proofs, TLSNotary, EIP-1271-style validation).
• Strong ability to reason about security, decentralization, and performance tradeoffs.
• Bonus: familiarity with RAG pipelines or AI-enhanced decision-making.

What We Offer

• The chance to build foundational infrastructure for the AI x Web3 ecosystem.
• Work on cutting-edge multi-agent frameworks and verification systems.
• A highly collaborative environment of engineers, researchers, and builders pushing the frontier.
• Remote-first culture with flexible collaboration.

About DcentraLab

Since 2017, DcentraLab has been a pioneering force in Web3 and blockchain development. Expanding beyond its initial product, 2Key, DcentraLab has introduced innovative solutions such as Hord, ChainPort, TokensFarm, and DcentraLab Diligence, with a commitment to ongoing growth. Through a relentless pursuit of cutting-edge technologies, DcentraLab remains at the forefront, shaping the future of decentralized ecosystems and blockchain-based products.