Senior Applied AI Engineer

Harnham
Portland, ME · RemoteFull-time$225,000–$275,000Posted Sep 16, 2026

About the role

Applied AI Engineer, Product and Delivery | Hybrid Portland, ME or Remote (East Coast / Chicago) | $225,000 to $275,000 plus equity

Most AI job ads ask for an engineer who can tolerate the business. This one is the reverse.

We are hiring someone whose core strength is problem solving and commercial judgement, and who has started building with AI rather than just talking about it. If you are the person on your team who takes a vague question from an operator, works out what actually needs answering, and has recently been prototyping your own tooling with LLMs, read on.

The Company

A newly independent company, spun out of the value creation team of a private equity firm. Its proprietary platform builds a digital twin of an organisation, simulating its people, processes and systems to produce an actionable roadmap for AI-driven value creation. The founding team comes from quantitative finance, top-tier strategy consulting and leading analytics and technology firms. The work is evidence-based, auditable and used by investors and management teams to make real decisions about real businesses.

This is a founding-stage team. You will shape what gets built.

The Role

You sit between the consultants and analysts doing client work and the engineers building the product. Your job is to close the gap between them.

Sit with consultants and data analysts, watch the work, and find where it is slow, manual or error-prone

Take an ambiguous business problem and sharpen it into a requirement someone can build against

Design and build LLM-powered prototypes to test whether an idea is worth pursuing

Define what a good output looks like and build the checks that prove it

Partner with software engineers to productionise what works, and drive adoption into the delivery workflow

Lead design reviews and mentor the analysts and engineers building alongside you

Track new models, frameworks and agentic tooling, and form a view on what is worth adopting

What We Are Looking For

The non-negotiables:

Problem solving. You scope ruthlessly. You know the difference between the analysis that is complete and the analysis that is sufficient, and you ship the second one

Business acumen. You understand how an operational change shows up in the numbers. P&L, EBITDA, labour cost. You can connect a technical output to a client's investment thesis

Operator exposure. You have worked directly with the people running a business, not adjacent to them. Your work changed what someone did on Monday

Quality instinct. You check your own work by reflex. You can tell us about a time you caught something before it went out, and what you changed afterwards

Strong SQL and the ability to build, not just specify

Big plus:

Applied AI experience, at any depth. Internal tools, automated workflows, agent prototypes, LLM-assisted analysis. What matters is that you have built something real and learned where it falls over

Python

Fluency with agentic development tooling such as Claude Code, subagents and custom skills

LangChain, LangGraph or similar orchestration frameworks

Experience with LLM-as-judge evaluation patterns

Consulting, private equity or another deadline-driven client-service background

Forward-deployed or solutions work where you built something for one customer and then generalised it into product

You do not need a background as a machine learning engineer. Data analysts, analytics leads, business operations people, consultants and value creation professionals who have started building with AI are exactly who we want to hear from.

What Is On Offer

Cash compensation of $225,000 to $275,000

Equity in a newly independent business at the point of spin-out

Hybrid in Portland, ME preferred, with fully remote considered for candidates on the East Coast or in Chicago

Direct influence over the product and the technical direction, on a team small enough that your judgement carries

How to Apply

Apply through this advert or get in touch for a confidential conversation.

Responsibilities

  • Close the gap between consultants and engineers
  • Sharpen ambiguous business problems into clear requirements
  • Design and build LLM-powered prototypes
  • Define quality outputs and build validation checks
  • Partner with software engineers to productionize solutions
  • Lead design reviews and mentor team members
  • Track new models and frameworks for adoption

Qualifications

  • Strong problem-solving skills
  • Business acumen with understanding of operational changes
  • Direct operator exposure
  • Quality instinct with attention to detail
  • Strong SQL skills

Benefits

  • Equity in a newly independent business
  • Direct influence over product and technical direction

Skills mentioned

PythonSQLGenerative AILarge Language ModelsAI AgentsLangChainLangGraphModel EvaluationWorkflow AutomationData Analysis

About Harnham

Harnham provides specialist Data and AI recruitment and staffing services, along with bespoke training solutions, across multiple industry verticals, operating in the UK, the USA and EU - contact us today to discuss your requirements: info@harnham.com Our recruitment and talent teams cover all aspects of the data and AI pipeline, from collection to consumption, across multiple data roles and functions. Whether you need full-time staff, contract talent, specialized training, Data-qualified graduates, or C-suite executives, Harnham Group is equipped to fulfill all your data talent requirements. Our five core services: * ATD - Rockborne – our graduate development arm – deploys expertly trained data consultants, who have gone through an intensive 12-week data training programme. After two years in the scheme, your consultant could become a * Contract / C2C / Freelance: Whether you're addressing a talent shortage, augmenting a project team, or encountering resource gaps, our specialist consultants offer bespoke interim talent solutions to address your unique challenges and drive success. * Full-Time / Direct Hiring: From early career professionals to senior management, our comprehensive services enable you to unearth outstanding data talent across various specializations, ensuring your organization thrives in the data-driven era. * Executive Search: With our dedicated executive search team and an extensive network encompassing the director to C-suite level, we assist both global corporations and ambitious startups in securing top-tier leadership talent to accomplish their goals. * GenAI, Prompt, LLM Training: Elevate your team's data expertise with our all-encompassing training programs covering essential tools and technologies such as Python, SQL, Machine Learning, LLM’s and AI. Highly bespoke, customised to your team learning requirements and budgets.

Staffing and Recruiting201-500 employeesWimbledon, London

H-1B sponsorship history

Historical employer filing data was found for Harnham. The employer record includes 1 historical certified applications. This is employer-level history, not a guarantee that this role currently offers sponsorship.