Senior AI Engineer – Founding Team

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New York / $175000 - $200000 annum

INFO

Salary

SALARY:

$175000 - $200000

Location

LOCATION

New York

Job Type
JOB TYPE

Permanent

Senior AI Engineer (Founding Team)

Remote (US) - NYC Preferred

$175,000 - $200,000 Base + Equity

THE COMPANY

Harnham is partnering with a venture-backed, early-stage AI startup building an agentic AI operating system for the advertising and marketing industry. Having recently completed a successful Series A funding round, the company is entering a rapid growth phase and is focused on developing foundational AI infrastructure that enables intelligent workflows, agent orchestration, and large-scale production AI systems.

Rather than layering AI onto existing software, the organization is building AI-native products from the ground up. With a lean team of approximately ~30 employees and a highly collaborative engineering culture, this is an opportunity to work directly alongside founders and technical leadership to define the future of AI-powered workflow automation.

RESPONSIBILITIES

  • Build and deploy production-grade AI features from concept through implementation and launch.
  • Design and develop agentic AI workflows, orchestration frameworks, and intelligent automation systems.
  • Create AI-powered applications that solve complex advertising and marketing challenges.
  • Optimize model performance, latency, reliability, and operational costs across production environments.
  • Collaborate closely with Product and Customer Success teams to validate business impact and customer outcomes.
  • Own features end-to-end, from architecture and development through deployment and ongoing optimization.
  • Contribute to platform architecture, engineering standards, and technical best practices.
  • Help shape the long-term direction of the company's AI infrastructure and product strategy.

SKILLS AND EXPERIENCE

  • Strong software engineering background with experience building and shipping production AI applications.
  • Hands-on experience developing LLM-powered applications in production environments.
  • Experience designing and implementing agentic AI systems and workflow orchestration frameworks.
  • Proficiency with LangChain or comparable orchestration technologies.
  • Demonstrated experience owning customer-facing products from development through deployment.
  • Strong software engineering fundamentals, including application architecture, testing, and scalability.
  • Comfort operating in fast-paced startup environments with high ownership and ambiguity.
  • Product-oriented mindset focused on measurable customer and business outcomes.
  • Ability to work across the technology stack and contribute wherever needed.

PREFERRED EXPERIENCE

  • Experience with multi-agent systems and advanced orchestration architectures.
  • Knowledge of Retrieval-Augmented Generation (RAG) systems.
  • Experience implementing AI evaluation and testing frameworks.
  • Prompt engineering expertise.
  • Background in marketing, advertising technology, or related industries.
  • Experience with MLOps, LLMOps, and cloud-native infrastructure.
  • Exposure to vector databases and large-scale AI platform architectures.

BENEFITS

The compensation package includes a competitive base salary, meaningful equity participation, and the opportunity to join a high-growth AI startup at an early stage. This role offers significant ownership, direct access to founders and engineering leadership, and the chance to help define the future of production-grade agentic AI systems.

HOW TO APPLY

Please submit your CV via the Apply link on this page to register your interest.

KEY TERMS

Artificial Intelligence | Agentic AI | AI Agents | Large Language Models | LLMs | LangChain | Workflow Automation | Multi-Agent Systems | RAG | Prompt Engineering | MLOps | LLMOps | Production AI | Software Engineering | Startup | Marketing Technology | Advertising Technology | Full Stack Engineering | AI Infrastructure | Machine Learning | Founding Engineer | Generative AI | Automation Platforms | Cloud Infrastructure

CONTACT

Tim Jonas
He/Him

Business Manager

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