Lead AI Integration Engineer

Requirements

• A minimum of 8+ years of experience in software engineering, with at least 2+ years of hands-on experience integrating LLMs and building AI-driven applications.
• Demonstrated experience architecting and deploying LLM-based or agentic systems in production, including prompt design, retrieval architecture, and tool/function calling (e.g., MCP)
• Hands-on experience with leading LLMs and APIs, including OpenAI, Google Gemini, and Anthropic Claude.
• Experience evaluating and selecting open-source and proprietary LLMs (e.g., OpenAI via Azure AI Foundry) based on accuracy, latency, scalability, cost, and overall performance for production AI solutions.
• Knowledge of vector stores, embeddings (LangChain, LlamaIndex, etc.).
• High level of English proficiency required to interact with a globally-based development team and client stakeholders.
• Deep expertise in Python for backend services and AI integration (replacing traditional Java/C# requirements).
• Demonstrated, hands-on experience utilizing Azure AI Foundry to build, deploy, and manage AI models and agents.
• Proven track record of building and managing complex API integrations for data ingestion, extraction, and classification.
• Strong understanding of security engineering, specifically implementing PII redaction, anonymization pipelines, and secure data handling in AI workflows.
• Experience delivering well-tested, scalable, secure, and performant enterprise-level systems that achieve client business outcomes.
• Strong track record of working within Agile software development frameworks.
• Proficiency with AI-assisted development tools (Claude Code, Cursor, GitHub Copilot) as a core daily practice, including pipeline construction, test generation, and documentation.

Additional Information

3Pillar is an AI transformation partner on a mission to help enterprises build the AI-native products and intelligent agents that will define the next era of business. With teams across North America, Europe, Latin America, and Asia, we work with the most ambitious companies in financial services, healthcare, media, and technology - helping them move faster, modernize boldly, and compete on their own terms. Our HelixAI platform and Helix Pods delivery model put our engineers at the center of real agentic transformation - doing work that is open, portable, and built to last. We are building the future of enterprise AI. Lead, AI Engineering As a Lead, AI/ML Engineer at 3Pillar, you will lead end-to-end AI solutions for our clients. You will work on complex AI/ML problems, contribute to architecture decisions, and ship agentic, LLM-based systems and ML solutions in production. This role sits at the intersection of backend engineering and applied AI. You are someone who can seamlessly connect APIs, orchestrate data flows, and build Retrieval-Augmented Generation (RAG) systems, all while maintaining rigorous data privacy standards. In an era defined by AI, you will be the force that turns theoretical AI concepts into production-ready features.

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