Senior Fullstack Engineer - Merchant Tech & AI-Driven Growth

United States Digital Space LLC; United States; Remote; USD 150,000 - 210,000; Full time

Job summary

United States Digital Space LLC is seeking a Senior Fullstack Engineer to own complex merchant-facing problems across the product stack. You will design, build, and operate systems, lead initiatives, and collaborate with cross-functional teams to deliver scalable solutions.

The role emphasizes architecture, reliability, and mentorship, with opportunities to leverage AI-assisted development tools to boost velocity while ensuring correctness and security.

Qualifications

• Senior engineer with end-to-end ownership of features and services.
• Strong background in backend and/or fullstack design and implementation.
• Experience with production systems, reliability, and observability.
• Ability to translate business problems into scalable technical solutions.

Responsibilities

• Design, build, and operate production systems across backend services and frontend apps.
• Lead complex initiatives across onboarding, analytics, or merchant tooling.
• Translate business problems into scalable, pragmatic technical solutions.
• Drive architecture decisions for scalability, reliability, and maintainability.
• Own initiatives end-to-end from discovery to production operations.

Skills

Go

Kotlin

TypeScript

React

Distributed systems

APIs

AI tooling

Tools

Kafka

PostgreSQL

MongoDB

Redis

AWS

Kubernetes

Docker

gRPC

Job description

United States Digital Space LLC is seeking a Senior Fullstack Engineer to own complex merchant-facing problems across the product stack. You will design, build, and operate systems, lead initiatives, and collaborate with cross-functional teams to deliver scalable solutions.

The role emphasizes architecture, reliability, and mentorship, with opportunities to leverage AI-assisted development tools to boost velocity while ensuring correctness and security.