Job Url: https://www.remoterocketship.com/company/g2i-co-2/jobs/lead-back-end-engineer-contract-united-states-remote/

Job Description: 
G2i Inc.
Website
LinkedIn
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Web Development • Android/iOS Development • Node.js • Mobile Development • JavaScript

G2i Inc. is a video-based hiring platform that specializes in providing contract and full-time engineers to companies quickly and efficiently. 

With a pool of over 8,000 qualified engineers, G2i offers a streamlined hiring process with customized requirements and signal strength-based matching. The platform emphasizes quality and speed, ensuring companies can hire engineers in as little as seven days. 

G2i also provides AI-based tools and training to keep engineers up-to-date, and offers a unique 7-day free trial for evaluating candidates. 


11 - 50 employees

👥 HR Tech

☁️ SaaS

🤖 Artificial Intelligence

Lead Back End Engineer – Contract
5 days ago

🇺🇸 United States – Remote

⏳ Contract/Temporary

🟠 Senior

🔙 Backend Engineer

AWS

Azure

Cloud

Distributed Systems

Docker

Google Cloud Platform

JavaScript

Kafka

Kubernetes

Microservices

Node.js

Postgres

RabbitMQ

Redis

TypeScript

Web3

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📋 Description
• Own the design and implementation of the backend services architecture.
• Build scalable Node.js microservices that interface with both smart contract layers and external financial systems.
• Leverage AI-driven development tools and modern cloud-native patterns to construct real-time event systems, API gateways, and integration layers capable of processing billions in transaction volume.
• Collaborate closely with the smart contract team to ensure seamless coordination between on-chain and off-chain systems.
• Contribute to an AI-first engineering team, utilizing tools like Claude, Linear, and various MCP/AI integrations daily.
• Design and build distributed backend architecture from scratch — implementing TypeScript/Node.js microservices for payment processing, transaction monitoring, and orchestration.
• Implement real-time systems using WebSockets for live transaction updates and webhook infrastructure for third-party integrations.
• Develop and maintain mock banking integration APIs and abstraction layers that connect with payment networks, core banking systems, and regulatory reporting tools.
• Design event-driven architectures for blockchain event processing, reconciliation, and settlement finalization.
• Implement monitoring and observability systems across on-chain and off-chain components.
• Build secure API gateways with OAuth 2.0/FAPI, rate limiting, and detailed audit logging.
• Own technical decisions related to service architecture, database design, messaging patterns, and cloud infrastructure.

🎯 Requirements
• 8+ years of experience in backend engineering, with deep expertise in Node.js/TypeScript and distributed systems.
• Proven track record in building high-throughput financial or payment systems.
• Strong proficiency in WebSocket, webhook, and real-time event processing implementations.
• Experience with AI-driven development tools (e.g., GitHub Copilot, Cursor, Claude).
• Hands-on experience with AWS, GCP, or Azure, and containerization using Docker/Kubernetes.
• Familiarity with blockchain integration patterns, Web3 libraries, and event monitoring.
• Experience with Kafka, RabbitMQ, Redis, and PostgreSQL.
• Understanding of financial protocols and payment systems (or eagerness to learn).
• Proven ability to build systems that scale to millions of users or billions of transactions.
• Knowledge of security best practices, PCI compliance, and financial regulatory requirements.
• Comfortable working independently as a domain expert while collaborating across teams.

🏖️ Benefits
• Contract Duration: Initial 2–3 month contract with potential for long-term extension or full-time conversion based on performance and company fit.