Lead AI Engineer | Onsite - Delaware

Posted 4 Days Ago
2 Locations
In-Office or Remote
56K-196K Annually
Senior level
Agency • Information Technology
The Role
Leads delivery of production LLM and AI systems, including multi-provider integrations, RAG, vector databases, agents, MCP tool use, guardrails, evaluation, observability, latency optimization, and cost management. Establishes organizational AI engineering standards, troubleshoots critical features hands-on, manages offshore delivery, reviews designs and code, and reports risks and progress to engineering leadership.
Summary Generated by Built In

Key Responsibilities 

  • Own delivery of LLM API integration and SDK patterns used across applications. 
  • Set organizational guidance on which LLM to use for what use case and drive delivery of multi-LLM scenarios. 
  • Define standards for advanced prompt engineering and context window management
  • Own delivery of RAG systems, including vector database selection/topology and knowledgebase design
  • Drive delivery of AI agent and multi-agent systems and tool-use/MCP integration patterns. 
  • Own guardrails delivery (safety, compliance, PII handling in prompts/outputs) — critical in a financial-services context. 
  • Define evaluation frameworks and real-time eval strategy; set standards for AI testing in CI/CD
  • Own latency profilingAI observability, and cost tracking/management for LLM-backed systems. 
  • Run day-to-day delivery of the offshore development team: sprint commitments, code/design review, real-time unblocking, and hands-on work on critical-path AI features. 
  • Report delivery status, risks, and blockers to engineering leadership. 

Must-Have Qualifications 

  • 6+ years in software engineering, with 2+ years as a tech lead owning end-to-end delivery of LLM/AI-powered systems (not a pure design/review architect role). 
  • Proven track record of shipping AI-powered features on committed timelines, including hands-on troubleshooting under delivery pressure. 
  • Strong, hands-on Python skills at an architectural/systems level. 
  • Proven experience architecting LLM API integrations and SDK-level abstractions across multiple providers. 
  • Demonstrated judgment on model selection (cost, latency, capability trade-offs) across use cases. 
  • Deep expertise in prompt engineering and context window management at scale. 
  • Proven design experience with RAG systems, including vector database architecture and knowledgebase design
  • Experience architecting AI agents/multi-agent systems and tool-use patterns (MCP or equivalent)
  • Strong understanding of guardrails design — content safety, PII protection, compliance controls for AI outputs. 
  • Experience defining evaluation frameworks and integrating AI testing into CI/CD
  • Proven ability to design for latency, observability, and cost management of AI systems in production. 
  • Financial-services or regulated-industry experience strongly preferred given compliance/guardrail stakes. 
  • Strong stakeholder communication; able to directly manage day-to-day delivery of an offshore team (standups, unblocking, sprint accountability). 

Nice-to-Have Qualifications 

  • Direct experience with specific frameworks (LangChain, LlamaIndex, Semantic Kernel, or equivalent). 
  • Experience with AWS Bedrock or comparable managed LLM platforms. 
  • Contributions to or deep familiarity with MCP (Model Context Protocol) implementations. 
  • Experience building internal LLM gateways. 
  • Familiarity with responsible-AI/model-risk-management frameworks used in financial services.

Compensation, Benefits and Duration

Minimum Compensation: USD 56,000
Maximum Compensation: USD 196,000
Compensation is based on actual experience and qualifications of the candidate. The above is a reasonable and a good faith estimate for the role.
Medical, vision, and dental benefits, 401k retirement plan, variable pay/incentives, paid time off, and paid holidays are available for full-time employees.
This position is not available for independent contractors
No applications will be considered if received more than 120 days after the date of this post

Skills Required

  • 6+ years of software engineering experience
  • 2+ years as a technical lead owning end-to-end delivery of LLM or AI-powered systems
  • Track record of shipping AI-powered features on committed timelines and troubleshooting under delivery pressure
  • Strong hands-on Python skills at an architectural or systems level
  • Experience architecting LLM API integrations and SDK abstractions across multiple providers
  • Experience selecting models based on cost, latency, and capability trade-offs
  • Deep expertise in prompt engineering and context window management at scale
  • Experience designing RAG systems, vector database architecture, and knowledgebases
  • Experience architecting AI agent or multi-agent systems and tool-use patterns such as MCP
  • Understanding of guardrails design, content safety, PII protection, and AI compliance controls
  • Experience defining evaluation frameworks and integrating AI testing into CI/CD
  • Experience designing production AI systems for latency, observability, and cost management
  • Strong stakeholder communication skills and ability to manage day-to-day offshore team delivery
  • Financial-services or regulated-industry experience
  • Experience with LangChain, LlamaIndex, Semantic Kernel, or equivalent frameworks
  • Experience with AWS Bedrock or comparable managed LLM platforms
  • Contributions to or deep familiarity with MCP implementations
  • Experience building internal LLM gateways
  • Familiarity with responsible-AI or model-risk-management frameworks used in financial services
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The Company
HQ: London
5,017 Employees
Year Founded: 2007

What We Do

Photon.com has emerged as one of the world’s largest and fastest-growing Digital Agencies. We work with 40% of the Fortune 100 on their Digital initiatives and are known for our ability to integrate Strategy Consulting, Creative Design, and Technology at scale. Please visit www.photon.com to learn more about us, how we work, and our customer case studies. Digital Transformation Starts Here.

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