Senior Backend Engineer (Go/Node) - DeFi & AI-Driven Scale

United States Digital Space LLC; United States; Remote; USD 140,000 - 210,000; Full time

Job summary

United States Digital Space LLC is a fast-paced fintech startup seeking a Senior Software Engineer to own backend systems. You will design scalable microservices (Go or Node.js), build RESTful APIs, and contribute to an AI-assisted development flow.

The role emphasizes robust architecture, high performance, and collaboration with frontend and blockchain engineers, product teams, and operations to deliver reliable services.

Qualifications

• 4+ years of experience building high-concurrency systems and APIs.
• Proficient in Go and/or Node.js with microservices and event-driven architecture.
• Strong experience with AWS services (Lambda, Cognito, Redis, SQS) and databases (PostgreSQL, DynamoDB).
• Experience writing unit, load, and automated tests and debugging production issues.
• Familiar with Docker, Kubernetes, GitHub Actions, and Terraform.

Responsibilities

• Understand and own the business domain and challenges.
• Design domain-driven architecture balancing robustness and startup speed.
• Build resilient microservices and APIs, with fast delivery.
• Contribute to deployment pipelines and observability.
• Develop, test, deploy secure code with AI assistance.
• Monitor production back-end for stability and performance.
• Collaborate with front-end, blockchain engineers, and product teams.

Skills

Go

Node.js

Microservices

APIs

Testing/Debugging

Tools

Docker

Kubernetes

GitHub Actions

Terraform

AWS

Lambda

Redis

PostgreSQL

DynamoDB

Job description

United States Digital Space LLC is a fast-paced fintech startup seeking a Senior Software Engineer to own backend systems. You will design scalable microservices (Go or Node.js), build RESTful APIs, and contribute to an AI-assisted development flow.

The role emphasizes robust architecture, high performance, and collaboration with frontend and blockchain engineers, product teams, and operations to deliver reliable services.