Sr. Platform Engineer

Role Summary

We are seeking a Senior Platform Engineer to join our Core Platform team. In this role, you will own and evolve the end-to-end architecture of the Core Platform, including backend services, SDKs, AI-enabled capabilities, and supporting infrastructure.

You will design and operate scalable APIs, event-driven systems, distributed services, and AI-integrated workflows, ensuring high standards for reliability, performance, observability, and security. This role requires strong architectural judgment, hands-on technical leadership, and the ability to collaborate cross-functionally to deliver extensible platform capabilities that support both traditional integrations and AI-driven use cases.

You will help set technical direction, mentor engineers, and drive engineering best practices across the team.

Responsibilities

• Own the end-to-end architecture of the Core Platform, including backend services, SDKs, AI-enabled components, and related infrastructure.
• Design and implement scalable APIs, event-driven systems, distributed services, and AI-integrated capabilities (including AI/ML and MCP integrations).
• Architect systems that reliably incorporate AI models into production environments, with strong attention to observability, latency, cost management, and failure handling.
• Lead API design and implementation with a focus on usability, performance, and long-term maintainability.
• Architect and evolve microservices using domain-driven design principles.
• Build platform abstractions and primitives that enable AI-driven workflows and agent-based capabilities.
• Partner closely with Product, Infra, and Customer Success teams to deliver seamless, customer-centric integration capabilities.
• Provide technical leadership, mentorship, and architectural guidance to engineers.
• Establish and elevate engineering best practices across design, development, testing, and operations.

Requirements

• 5+ years of professional software engineering experience.
• Proven experience building scalable, reliable, and secure distributed systems, including systems that integrate AI/ML capabilities.
• Experience integrating AI-powered features into production systems, with an understanding of performance, reliability, and governance considerations.
• Deep expertise in REST API design and implementation.
• Experience designing and operating event-driven architectures.
• Strong coding skills across multiple layers of the stack (backend services, SDKs, developer tooling, and AI-integrated systems).
• Strong understanding of microservices architecture and domain-driven design.
• Strong proficiency in Python (object-oriented and functional programming).
• Experience with Golang and TypeScript desired.
• Track record of technical leadership, mentorship, and cross-functional collaboration.
• Excellent communication skills with the ability to influence at both technical and strategic levels.
• Must be a US citizen living within the United States.

About Istari Digital

Istari is a digital engineering software company building open, scalable infrastructure for engineering data. Our platform lets customers simply and securely integrate engineering models across disciplines, organizations, and security levels — whether they're designing prototypes, performing virtual testing, or training AI and autonomy for complex systems.

• Focus is rewarded. Finish is remembered.
• Facts are friendly. Even when they are not fun.
• Fellowship is fundamental. Make others successful.