[Hiring] Principal Software Engineer, AI Platform @isolved

Role Description

The isolved Senior Software Engineer, AI Platform role owns both program execution and technical direction, leading ~20 engineers across domain teams (Tax, Benefits, Time, Payroll, Shared Logic), alongside two Engineering Managers and a Data Architect. The position blends delivery leadership with deep technical involvement, serving as a key decision-maker, escalation point for complex challenges, and ultimate owner of program outcomes.

Core Job Duties

• Design and build a scalable LLM gateway with model routing, prompt management, cost attribution, rate limiting, and caching.
• Develop and operate RAG pipelines, embedding services, and vector search infrastructure for platform-wide use.
• Implement platform-level cost optimization strategies, including semantic caching and model selection by workload.
• Build and maintain agentic runtime infrastructure, including orchestration, state management, and human-in-the-loop patterns.
• Develop extensible MCP server and tool ecosystems for product team integration.
• Design and support multi-agent coordination patterns using modern frameworks and protocols.
• Establish comprehensive AI observability, including usage, latency, cost tracking, and distributed tracing.
• Implement AI governance controls, including access management, audit logging, content filtering, and security protections.
• Build AI incident detection and response capabilities, including monitoring for failures, hallucinations, and cost anomalies.
• Create developer-friendly SDKs across languages (Python, .NET, TypeScript) to simplify platform adoption.
• Define "paved road" patterns for common AI use cases and support onboarding of product teams.
• Build automated evaluation pipelines and continuously monitor production quality and model performance.

Qualifications

• 5+ years of professional software engineering experience, with Python as your primary language.
• 2+ years building production LLM-powered systems - inference, RAG, agentic patterns, or AI infrastructure.
• Deep Python expertise - this is the primary language for AI platform work.
• Working proficiency in C#/.NET - the platform serves teams that live in C#, so interop is real and matters.
• Strong hands-on experience with agentic frameworks - Semantic Kernel, LangGraph, LangChain, or you've built your own.
• Production experience with RAG architecture: chunking strategies, embedding models, vector search, retrieval quality, and the failure modes that don't show up in demos.
• Azure AI Foundry / Azure OpenAI experience - model deployment, API integration, observability tooling.
• Experience building internal platforms or SDKs that other engineers depend on - you understand what makes a platform feel good to use.
• Strong grasp of AI observability: token usage, latency, cost tracking, and distributed tracing across multi-agent workflows.

Requirements

• Experience with TypeScript and building developer SDKs or tooling.
• Hands-on experience with AI evaluation frameworks (LLM-as-judge, automated regression testing).
• Knowledge of AI governance practices, including access control, audit logging, and security safeguards.
• Familiarity with container-based deployments (e.g., Azure Container Apps) and infrastructure-as-code (Terraform).
• Awareness of AI regulatory frameworks such as NIST AI RMF or ISO/IEC 42001.

Benefits

• Visit www.isolvedhcm.com/careers for more information regarding our incredible culture and focus on our employee experience.
• Visit www.isolvedeebenefits.com for a comprehensive list of our employee total rewards offerings.