Principal Software Engineer (AI)

TL;DR

Principal Software Engineer (AI): Architecting and building the coordination fabric for agent-to-API and agent-to-agent transactions with an accent on discovery, identity, billing, and settlement. Focus on designing high-performance tools, REST API substrates, and robust Model Context Protocol (MCP) server capabilities within a zero-to-one engineering squad.

Location: Remote (US/Canada), with a preference for West Coast/Bay Area time zone alignment.

Salary: $220,000 – $270,000

Company

hirify.global is a leading developer of API and AI connectivity technologies, providing a unified platform that enables organizations to secure, manage, and monetize the flow of intelligence across APIs and AI models.

What you will do

• Architect and own end-to-end full-stack surfaces for the marketplace loop, including high-performance tools and REST API substrates.
• Design foundational agent-native user experiences, including MCP server capabilities and CLI/SDK generation workflows.
• Scale transaction infrastructure by building high-reliability pipelines for identity verification, usage attribution, and multi-party settlement.
• Drive cross-functional execution across the engineering ecosystem, partnering with gateway runtime and security teams.
• Lead architectural design reviews and champion a zero-technical-debt culture.
• Mentor engineers and translate ambiguous product bets into modular, shippable technical milestones.

Requirements

• 7+ years of experience engineering enterprise-grade production software.
• Master-level expertise with a modern backend stack (e.g., Golang) and deep architectural command of API infrastructure, Kubernetes, and cloud-native patterns.
• Extensive hands-on experience developing autonomous agent applications, tool-calling systems, or prompt loops.
• Deep operational familiarity with multi-tenant architectures, usage-based metering, and billing integration patterns.
• Strong written communication skills with comfort operating in globally distributed remote environments.

Culture & Benefits

• Access to comprehensive healthcare benefits and 401(k) plans for US-based employees.
• Short and long-term disability benefits, life, and AD&D insurance.
• Opportunity to work in an autonomous startup-like unit within a established company.
• Focus on engineering velocity and architectural leadership in the Agentic Era.