Principal Software Engineer (AI)

Location: Remote; France, Germany, Portugal, Spain, United Kingdom, or Italy

Company

hirify.global is a global cybersecurity company founded in 2022 that develops open-source, AI-powered solutions for Continuous Threat Exposure Management and threat-informed defense.

What you will do

• Define and drive the long-term technical vision and architecture of XTM One, including agent runtime and orchestration, MCP and tool integrations, data and context layers, APIs, permissions, and shared platform services.
• Design the platform for SaaS and on-premises delivery, including multitenancy, isolation, upgrade paths, configuration, and customer-environment operability.
• Set standards for architecture, code quality, CI/CD, testing, AI-assisted development, observability, reliability, evaluations, and production guardrails for nondeterministic AI workloads.
• Define integration contracts, authentication, data exchange, and versioning between XTM One and OpenCTI, OpenAEV, OpenGRC, and future products.
• Represent XTM One in the XTM Foundation and maintain architectural coherence with Principal and Staff Engineers across the product suite.
• Write production code, prototype approaches, review critical pull requests, and unblock engineers.

Requirements

• 10+ years of software engineering experience, including technical leadership on complex production platforms.
• Strong fullstack background with a backend and architecture focus; mastery of TypeScript and Python and the ability to deliver features from data model through UI.
• Strong system design experience covering distributed systems, scalability, performance, security, and observability.
• Broad software engineering experience across product needs, design, coding, testing, CI/CD, packaging and release, infrastructure, deployment, operations, monitoring, and incident response.
• Experience building and operating platforms delivered both as SaaS and on premises, including multitenancy and enterprise constraints.
• Production experience with LLM systems, including agent frameworks, tool calling, MCP, RAG, vector search, evaluation, and reliability practices.
• Ability to define and carry technical standards, raise engineering quality, and turn technical research and experimentation into concrete proposals.
• Excellent written English for design documents, ADRs, and review comments.
• Autonomy and effectiveness in a remote, asynchronous culture.

Nice to have

• Cybersecurity domain knowledge, including CTI, CTEM, MITRE ATT&CK, or STIX/TAXII.
• Experience with extensible plugin or tool ecosystems.
• Open-source contributions or maintainership.

Culture & Benefits

• Remote-first work with flexibility built into daily operations.
• 25 days of paid time off, plus paid volunteer days.
• Equipment choice and additional support for remote work and development needs.
• Competitive compensation and equity participation.
• Two annual in-person gatherings: one global company event and one team event.
• Culture based on Cohesion, Openness, Responsibility, and Equity, with an open-source and collaborative cybersecurity mission.