Fullstack Developer (Python/React)

Private Advertiser; Makati; On-site; PHP 900,000 - 1,400,000; Full time

Job summary

Private Advertiser seeks a skilled full-stack developer to deliver end-to-end web applications. You will design backend services in Python, manage data pipelines with SQL, and implement LangChain/LangGraph for AI-powered workflows.

You will develop responsive UIs with React.js, build robust APIs, and ensure seamless integration between frontend and backend while adhering to Agile practices.

Qualifications

• Strong Python for backend services, data processing, and logic.
• SQL expertise for complex queries and relational databases.
• Experience building LLM-powered workflows with LangChain/LangGraph.
• Frontend development with React JS for responsive UI.
• APIs, Function Apps, ETL pipelines, and backend services.

Responsibilities

• Integrate frontend and backend components into working applications.
• Contribute to modular, reusable architecture design.
• Participate in testing, debugging, and troubleshooting to ensure quality.

Skills

Python

SQL

LangChain / LangGraph

React JS

Backend Development

Education

Bachelor’s degree in Computer Science, Information Technology, Engineering, or related field

Job description

QUALIFICATIONS

• Bachelor’s degree in Computer Science, Information Technology, Engineering, or related field
• At least 3–5 years of experience in full-stack development
• At least 2+ years of experience in Python-based backend development
• Proven experience building and deploying web applications end -to-end
• Experience working with SQL databases and data processing pipelines
• Experience with modern frontend frameworks, preferably React JS
• Experience with API development/integration and backend services
• Exposure to GenAI / LLM application development, preferably using LangChain and/or LangGraph
• Experience working in Agile / Scrum delivery environments
• Strong communication skills and ability to work with cross-functional teams

MUST-HAVE SKILLS & EXPERIENCE

Core Technical Skills:

• Python - Strong coding proficiency in Python for backend services, data processing, and application logic
• SQL - Ability to write complex queries, optimize performance, and work with relational databases
• LangChain / LangGraph - Hands-on experience building LLM-powered workflows, agent-based orchestration, or RAG-style applications
• React JS - Experience developing responsive and user-friendly frontend applications
• Backend Development - Experience building and maintaining APIs, Function Apps, ETL / data pipelines

Development and Integration:

• Experience integrating frontend and backend components into a working application
• Understanding of application architecture, modular design, and reusable components
• Experience with testing, debugging, and troubleshooting

Enterprise Delivery Skills:

• Ability to work in a structured delivery setup with defined timelines and requirements
• Strong problem-solving and analytical skills
• Ability to translate business requirements into technical solutions

NICE-TO-HAVE SKILLS & EXPERIENCE

• Azure experience
• Azure OpenAI / AI application development
• RAG / LLM application experience
• Banking or financial services background
• Experience with secure and enterprise-grade application development