AI Engineer

T12 Technologies•Baltimore City, MD

13d•Remote

About The Position

T12 Technologies LLC is staffing an AI Engineer role for a finance automation program for a commercial client in Texas. This role involves building Claude workflows to read invoices, extract and validate line-level data, apply GL coding rules, and route approvals. The engineer will tune these workflows against live invoice volume and is responsible for validation, including building the evaluation harness and proving accuracy against ground truth. The position requires building invoice intake, extraction, and GL coding workflows, prompt engineering for various finance-related tasks, building an evaluation harness with accuracy scoring and regression checks, validating extraction and coding accuracy, building Claude-assisted analysis and duplicate saved searches, and supporting the reporting workflow, go-live, and post-implementation hypercare.

Requirements

2+ years building production workflows on LLM APIs — Anthropic Claude strongly preferred — including prompt engineering, structured extraction, and confidence scoring.
Strong Python and REST API integration; comfort working against a third-party ERP you did not build.
Document extraction at production quality — invoices, forms, contracts, or similar semi-structured documents.
Demonstrated experience building evaluation sets and regression suites for non-deterministic output; you can tell a genuine accuracy gain from noise.
Structured output and schema validation with real handling for malformed or low-confidence results.
Disciplined prompt iteration against real data rather than synthetic happy-path examples.
Legal authorization to work in the United States as an independent contractor.
Two to three references from production LLM work personally built (demos, pilots, and proofs of concept do not qualify).
List any Anthropic, cloud provider, or ML certifications with credential IDs.

Nice To Haves

SuiteScript 2.x or prior NetSuite / ERP integration experience.
AP, finance, or accounting document processing background.
OCR and document-capture pipelines.
Experience on a team where an architect owns the design and you own the build.

Responsibilities

Build Claude invoice intake, extraction and GL coding workflows, tuned against the client's historical coding patterns and vendor mix.
Configure auto-approve versus exception routing and implement human-in-the-loop thresholds for high-value transactions.
Author, test and version the prompt library covering coding, duplicate rationale, exception summaries and anomaly analysis.
Build ground-truth sets from historical invoices, accuracy scoring, and regression checks that run on every change.
Validate extraction and coding accuracy against agreed targets and document the results as acceptance evidence.
Build Claude-assisted analysis and duplicate saved searches, producing investigation summaries and disposition drafts.
Build a budget-versus-actual variance commentary workflow for the finance team.
Support cutover, capture baseline metrics, and participate in post-implementation hypercare.