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# AI Agent Developer

- **Company:** Abt, Inc.
- **Location:** Glenview, IL, United States
- **Experience:** Starter
- **Salary:** $104,000.0 - $112,320.0
- **Contract:** Permanent contract
- **Skills:** PHP (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Business Logic, Batch Processing, Computer Programming, Databases, Serialization, JSON, PostgreSQL, MariaDB, MySQL, Object-Oriented Software Development, Oracle (Applications), Parsing, Search Technologies, SQL Databases, Large Language Models, Prompt Engineering, Test Scripts, Generative AI, Backend, Git, Virtual Agents, Restful APIs, Software Version Control
- **Published:** July 30, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=f73ca0fe2e3f3f1e

## About the Role

* Programming: 1-3 years of professional experience writing clean, readable, object-oriented PHP.
 * API Fundamentals: Strong understanding of RESTful APIs, JSON parsing, and serialization in backend environments.
 * Databases: Solid SQL experience (we use Oracle, MySQL/MariaDB, and Postgres).
 * Version Control: Proficiency with Git and collaborative code-review workflows.

Preferred Qualifications

 * Hands-on experience with LLM APIs
 * Experience working with legacy code in a large, established codebase.

## Description

We are looking for a motivated Junior-to-Mid-Level PHP developer to help us build and scale AI systems within our backend ecosystem. In this role, you will work in our in-house PHP agent framework to connect Large Language Models (LLMs) to internal APIs and databases, build RAG pipelines, and develop multi-step agent workflows. Working alongside senior engineers, you will turn business logic into intelligent, automated workflows that reason, call tools, and execute multi-step tasks. This is an in-person role in Glenview, IL. This requires regular on-site work, and relocation assistance is not provided.

Core Responsibilities

 * Agent Implementation: Build and refine AI agents and multi-step workflows using our in-house agent framework.
 * API Integration: Write clean PHP code to connect commercial LLM APIs (OpenAI, Anthropic, Google) to internal REST APIs and enterprise databases, including tool calling and structured outputs.
 * RAG & Vector Management: Assist in building and maintaining Retrieval-Augmented Generation (RAG) pipelines using embeddings and vector search.
 * Testing & Evaluation: Write test scripts to evaluate agent outputs, benchmark token costs, and track down hallucinations and runaway loops.
 * Prompt Engineering: Design, test, and version-control system prompts, function schemas, and tool definitions for chat and batch processing.


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