Remote Senior Fullstack Engineer - AI-Driven APIs

Postscript; United States; Remote; USD 175,000 - 205,000; Full time

Benefits offered by this job

Equity

Work from home

Health insurance

Flexible PTO

Job summary

Postscript, the AI messaging platform trusted by 20,000+ Shopify brands, seeks a Senior Fullstack Engineer for the Customer Context team. You will architect scalable backends, APIs, and data pipelines, leveraging AI-first development to deliver revenue-driving features for e-commerce marketers.

This high-autonomy role embraces ambiguity, with a focus on reliability, performance, and system-wide AI integration.

Qualifications

• 6+ years of experience building large-scale data-intensive backend systems and APIs.
• Active daily use of AI coding tools (Claude Code, Codex, Copilot or equivalent).
• Proficiency in Python, Go, Rust, React and TypeScript.

Responsibilities

• Take deep ownership of systems and product areas; become the go-to technical expert.
• Investigate, design, and execute solutions across distributed systems with ambiguity.
• Architect and maintain highly available REST APIs and backend services.
• Drive decoupling, modularization and technical debt reduction for long-term maintainability.
• Build agentic workflows and automate output with AI tooling.
• Collaborate with product, data, and GTM teams in an async-first environment.

Skills

Python

Go

Rust

React

TypeScript

Tools

Kafka

Flink

Spark

Terraform

AWS

Kubernetes

Datadog

Signoz

Job description

Postscript, the AI messaging platform trusted by 20,000+ Shopify brands, seeks a Senior Fullstack Engineer for the Customer Context team. You will architect scalable backends, APIs, and data pipelines, leveraging AI-first development to deliver revenue-driving features for e-commerce marketers.

This high-autonomy role embraces ambiguity, with a focus on reliability, performance, and system-wide AI integration.