API Developer

Catapult Federal Services; Dallas (TX); Remote; USD 56,000 - 94,000; Full time

Benefits offered by this job

Fully remote

Job summary

Catapult Federal Services in the United States is seeking two mid-level API engineers to build the APIs behind an AI-driven patient platform. The role focuses on spec-driven development, guiding AI coding agents, and owning the review and testing of all shipped output.

The position offers a 6-month contract with fully remote work for US-based teams. Required are 3–5 years building production REST APIs in Python (FastAPI), experience with document databases, and hands-on work with LLM- or

Qualifications

• 3–5 years building production REST APIs in Python (FastAPI or similar).
• Experience with a document database (Cosmos DB, MongoDB, or DynamoDB).
• Hands-on experience shipping at least one LLM- or retrieval-based feature.
• Daily, critical use of AI coding assistants.
• Curiosity, openness to learning, and comfort working within agreed specs and standards.

Responsibilities

• Building and owning configurable, multi-step patient workflows, including care-program screening and enrollment, surveys, scheduling, callbacks, and CRM handoff.
• Building integrations with partner systems.
• Owning how the platform understands patient requests through retrieval, LLM agents, and rigorous evaluation of classification quality.
• Writing clear specs, directing AI coding agents, and reviewing and testing all output before it ships.
• Learning the healthcare domain so you understand the problem, not just the ticket.

Skills

REST APIs

Python

FastAPI

Document DB

LLM/Retrieval

AI coding assistants

Education

Bachelor's degree in CS or related

Tools

Azure Cosmos DB

Azure OpenAI

Azure AI Search

Azure DevOps

C#/.NET

React/TypeScript

Job description

About The Company

Our client is a large, well-known healthcare system building AI-assisted tools that change how patients get care. Their platform lets patients describe what’s wrong in their own words and then connects them to the right care, whether that’s emergency or urgent care, scheduling, care programs, or their care team. It combines conversational AI, retrieval and LLM classification, clinically validated triage, configurable care workflows, and integrations with clinical and CRM systems.

IT

Dallas , TX Contract Nov 2, 2026

API Developer (Python / Applied AI)

Contract – 6 months

Remote (US), team based in Dallas, TX

Job Description

We’re hiring two mid-level API engineers (3–5 years) to build the APIs behind this patient-facing platform. The team does spec-driven development with AI coding agents writing much of the first draft. You set clear intent, direct the agents, and own reviewing and testing everything that ships. If that way of working excites you, you’ll fit right in.

What You’ll Be Responsible For

• Building and owning configurable, multi-step patient workflows, including care-program screening and enrollment, surveys, scheduling, callbacks, and CRM handoff
• Building integrations with partner systems
• Owning how the platform understands patient requests through retrieval, LLM agents, and rigorous evaluation of classification quality
• Writing clear specs, directing AI coding agents, and reviewing and testing all output before it ships
• Learning the healthcare domain so you understand the problem, not just the ticket

Required Experience/Skills

• 3–5 years building production REST APIs in Python (FastAPI or similar)
• Experience with a document database (Cosmos DB, MongoDB, or DynamoDB), including designing around access patterns
• Hands-on experience shipping at least one LLM- or retrieval-based feature and measuring how well it worked, or owning a multi-step, multi-system workflow in production
• Daily, critical use of AI coding assistants
• Curiosity, openness to learning, and comfort working within agreed specs and standards

Tech Stack

Python 3.11, FastAPI, Pydantic, Azure Cosmos DB, Azure OpenAI, Azure AI Search, and Azure DevOps, plus some C#/.NET and React/TypeScript for internal tools

Nice-to-Haves

• Healthcare or other regulated-industry experience
• HIPAA-aware engineering
• Pydantic AI or another agent framework
• C#/.NET
• EHR integration (Epic/FHIR)
• CRM (Dynamics 365) or scheduling/enrollment integrations

Education

Bachelor’s degree in Computer Science or a related field, or equivalent hands-on experience

Pay & Benefits Summary

• Up to $68/hr, depending on experience
• 6-month contract, starting mid-November
• Fully remote