Senior Full-Stack Engineer: Python/React AI Microservices

Apex Systems; Plano (TX); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

ESPP and 401K with match

HSA and EAP

Job summary

Everforth Apex is seeking a Full Stack Software Engineer in Plano, onsite, to own a FastAPI microservice and deliver end-to-end integration with an enterprise AI platform. You will lead backend development in Python with Pydantic data contracts and build frontend interfaces in React/TypeScript.

You will work across databases (MongoDB, SQL) and Redis, collaborating with AI engineers to add LLM-driven features. The role demands strong full stack ownership and production-grade delivery.

Qualifications

• 4+ years of full stack software engineering experience.
• Expert-level Python with production-ready, type-safe code.
• Hands-on FastAPI and Pydantic for microservices.
• Front-end proficiency: React, TypeScript, HTML, CSS.
• Experience with Node.js and web servers (Apache or equivalent).
• Databases across MongoDB, SQL, PostgreSQL/MySQL, Redis.
• Built and owned RESTful APIs in production environments.
• Experience with AI applications and LLM-powered services.

Responsibilities

• Own full lifecycle of a FastAPI microservice (design, tests, deployment, maintenance).
• Build and document RESTful APIs with FastAPI and Python; enforce data contracts with Pydantic.
• Develop front-end components using React, TypeScript, HTML, CSS.
• Integrate relational and NoSQL DBs (MongoDB, SQL, Redis) for persistence and caching.
• Collaborate with AI engineers to add LLM-driven features and agentic workflows.
• Contribute to broader microservices ecosystem with Node.js and Apache-backed services.
• Ensure secure, scalable, maintainable architecture across all layers.
• Identify technical debt and gaps; own workstreams to completion.
• Implement observability and monitoring for owned services.

Skills

Python

FastAPI

Pydantic

React

TypeScript

HTML

CSS

Node.js

Apache

MongoDB

SQL

PostgreSQL/MySQL

Redis

REST APIs

AI integration

LangChain (preferred)

LLM observability tools

Job description

Everforth Apex is seeking a Full Stack Software Engineer in Plano, onsite, to own a FastAPI microservice and deliver end-to-end integration with an enterprise AI platform. You will lead backend development in Python with Pydantic data contracts and build frontend interfaces in React/TypeScript.

You will work across databases (MongoDB, SQL) and Redis, collaborating with AI engineers to add LLM-driven features. The role demands strong full stack ownership and production-grade delivery.