Feeny
Istari Digital

Sr. Platform Engineer at Istari Digital (United States)

Istari Digital· United States· $145k–$190k·

Role details

Salary
$145k–$190k
Work type
Remote
Employment
Full-Time

Job description

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.

Core 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.

Required Qualifications

  • 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.

Why work at Istari Digital

  • Mission‑driven culture: Employees work on genuinely hard, unsolved problems in decentralized data sovereignty, AI engineering, and cross‑domain security – with direct impact on national security and critical infrastructure.
  • Remote‑friendly: Many roles are listed as remote (anywhere US) or hybrid (DMV area); on‑site options exist in Huntsville, AL and Seattle, WA.
  • Diverse team background: The team comes from defense, industry, academia, government, and startups – “everyone’s background is a feature, not a footnote.”
  • Growth trajectory: Rapid headcount growth, recent acquisitions, and strong investor backing suggest a high‑growth environment with ample career development opportunities.
  • Engineering culture: Emphasis on deep curiosity, craft, and solving problems that matter; the platform is built by people who have lived the pain of manual, siloed engineering workflows.

Application questions