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Sr. Full stack developer

XFORIA IncIrving, TX🇺🇸United StatesPosted 13 Aug 2026

Quick Overview

Work Type
On Site
Level
Mid Senior

Job Description

Job title: Sr. Full stack developer
Location: Irving, TX - 5 Days onsite
6 months - w2 contract
 
We are looking for a highly motivated Senior Full Stack Developer to join our engineering team. You will design, develop, and maintain scalable web applications across the entire technology stack. The ideal candidate has strong backend expertise in Python or Java, experience building modern frontend applications with React, and is passionate about delivering high-quality software.
Experience with Elasticsearch is highly desirable, while knowledge of LangChain, LLMs, and vector embeddings is considered a strong bonus.
 
Responsibilities
  • Design, develop, and maintain scalable full-stack web applications.
  • Build robust backend services using Python (FastAPI/Django) or Java (Spring Boot).
  • Develop responsive and reusable frontend components using React.
  • Design and implement RESTful APIs and microservices.
  • Integrate applications with SQL and NoSQL databases.
  • Optimize application performance, scalability, and reliability.
  • Collaborate with product managers, designers, and cross-functional engineering teams.
  • Write clean, maintainable, and well-tested code.
  • Participate in code reviews and mentor junior developers.
  • Troubleshoot production issues and implement long-term solutions.
 
Required Qualifications
  • Bachelor''s degree in Computer Science or related field, or equivalent practical experience.
  • 10+ years of professional software development experience.
  • Strong proficiency in Python or Java.
  • Experience with backend frameworks such as:
    • FastAPI
    • Spring Boot
  • Strong understanding of:
    • REST APIs
    • Microservices
    • Authentication & Authorization
    • API security
  • Experience with relational databases such as PostgreSQL or MySQL.
  • Familiarity with NoSQL databases such as MongoDB.
  • Experience building modern frontend applications using React.
  • Strong understanding of JavaScript/TypeScript, HTML5, and CSS3.
  • Experience using Git and CI/CD pipelines.
  • Excellent problem-solving and debugging skills.
 
Preferred Qualifications
  • Hands-on experience with Elasticsearch, including:
    • Index design
    • Query DSL
    • Aggregations
    • Relevance tuning
    • Performance optimization
  • Experience with cloud platforms (AWS, Azure, or Google Cloud Platform).
  • Experience with Docker and Kubernetes.
  • Familiarity with distributed systems and event-driven architectures.
 
Nice to Have
Experience with Generative AI technologies, including:
  • LangChain
  • Retrieval-Augmented Generation (RAG)
  • Embedding models
  • Vector databases
  • Semantic search
  • Prompt engineering
  • LLM integrations (OpenAI, Anthropic, Azure OpenAI, etc.)
 
Technical Skills
Backend
  • Python or Java
  • FastAPI / Spring Boot
  • REST APIs
  • Microservices
  • SQL & NoSQL
Frontend
  • React
  • TypeScript
  • JavaScript
  • HTML/CSS
Search
  • Elasticsearch
AI (Bonus)
  • LangChain
  • Embeddings
  • Vector Databases
  • RAG
  • LLM APIs
DevOps
  • Git
  • Docker
  • CI/CD
  • AWS/Azure/Google Cloud Platform
 

Skills

Django
Docker
FastAPI
Microservices
MongoDB
MySQL
SQL
Spring
Spring Boot
AWS
Azure
CSS
Generative AI
Git
Google Cloud
HTML
Java
JavaScript
Kubernetes
LLM
PostgreSQL
Python
REST
React
TypeScript

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