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HCLTech

Greater London / Global

Artificial Intelligence Specialist

Job Description

1) Define reference architectures for GenAI systems: RAG, agentic orchestration, tool/function calling, multi-step reasoning workflows, memory patterns, and context strategies.

  • Define reference architectures for GenAI systems including RAG, agentic orchestration, tool/function calling, multi-step reasoning workflows, memory patterns, and context strategies.
  • Design multi-tenant and enterprise-scale GenAI platforms with clear separation of concerns: UI, orchestration, retrieval, inference, evaluation, and observability.
  • Select model strategies: hosted LLMs, open-weight models, fine-tuning vs. prompt/RAG, latency and cost tradeoffs, and deployment patterns.

2) Agentic AI Orchestration & Tooling

  • Architect agent systems (single/multi-agent) including:
  • Tool use patterns (APIs, databases, search, workflow engines)
  • Guardrails to prevent unsafe tool actions and hallucinated commands
  • Build reliable flows for “human-in-the-loop” decision points and approvals (e.g., procurement, customer comms, incident triage).

3) Retrieval, Knowledge Systems & Data Design

  • Lead design of knowledge ingestion pipelines:
  • document parsing, chunking strategies, embeddings, metadata, lineage, freshness SLAs
  • Architect vector search and hybrid retrieval:
  • semantic + keyword, reranking, filtering, ACL-aware retrieval
  • Ensure retrieval respects access control, PII handling, data residency, and auditability.

4) Production Engineering, Reliability & Cost

  • Set non-functional requirements for GenAI workloads:
  • SLOs, latency budgets, fallback models, caching, rate limiting
  • Design cost controls: prompt/token optimization, model routing, batching, and usage governance.
  • Implement resiliency patterns: circuit breakers, retries, queue-based orchestration, idempotency.
  • Establish AI security posture:
  • Define policies and controls for:
  • sensitive data, logging, redaction, encryption, secret management, and auditing
  • Collaborate with risk/compliance to drive:
  • model governance, content safety, bias/quality monitoring, and regulatory alignment

6) Evaluation, Observability & Continuous Improvement

  • offline evals (golden sets), automated regression, and scenario-based testing
  • Instrument systems for observability:
  • traces, prompt/versioning, retrieval diagnostics, tool-call logs, and outcome metrics
  • Run A/B tests and iterate on prompts, retrieval, and agent policies based on measurable outcomes.

7) Leadership & Stakeholder Management

  • Partner with product leaders to identify high-value use cases and define roadmap.
  • Mentor engineers and data scientists on best practices for LLM apps.
  • Produce architecture artifacts: ADRs, threat models, system diagrams, runbooks.

Required Skills & Experience

Core Technical Skills (Must Have)

  • 8+ years in software/solution architecture with 2+ years delivering GenAI/LLM solutions in production (adjust as needed).
  • Strong knowledge of LLMs: prompting patterns, context windows, tool/function calling, model limitations, and safety risks.
  • orchestrators, workflows, multi-step reasoning, tool usage, HITL patterns
  • RAG expertise:
  • Cloud architecture (Azure/AWS/GCP) with production engineering rigor:
  • Solid programming skills (one or more):
  • Experience with APIs and integration patterns:
  • REST/gRPC, event-driven systems, queues, workflow engines

Security & Governance (Must Have)

  • Understanding of GenAI-specific threats:
  • Familiarity with enterprise controls:
  • IAM, key management, encryption, network isolation, audit logging
  • Responsible AI practices:
  • evaluation, content moderation, privacy, and compliance-by-design

Architecture & Systems Skills (Must Have)

  • scalability, fault tolerance, caching, performance tuning
  • Observability:
  • logging/metrics/tracing, prompt/version tracking, monitoring SLIs/SLOs
  • Cost management and performance optimization:
  • model selection/routing, token reduction, caching, batching

Preferred / Nice-to-Have Skills

  • Fine-tuning approaches:
  • LoRA/QLoRA, instruction tuning, adapters, distillation (when appropriate)
  • Experience with:
  • Advanced evaluation:
  • LLM-as-judge with safeguards, rubric scoring, adversarial testing
  • MLOps/LLMOps toolchains:
  • customer support automation, developer productivity copilots, IT ops agents, finance or healthcare compliance
  • Experience building platforms:
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