Full-Stack Developer (Contract)

Upsta; United States; Remote; USD 83,000 - 138,000; Full time

Job summary

Upsta is seeking a remote contract engineer to own maintenance and feature delivery across a digital stack, from React interfaces to Python APIs, AI workflows, databases, and AWS-hosted services.

You will build interfaces with React, develop Python REST APIs, implement AI workflows, and manage deployments on AWS. The role covers production support, reliability, and cross-cutting concerns across code and data layers.

Qualifications

• Strong Python skills, including asynchronous programming, API design, and testing.
• React experience covering application state, API integration, and HTML/CSS.
• Hands-on experience with LLM prompts, agents, validation or guardrails, and vector databases where appropriate.
• PostgreSQL schema design, indexing, and query tuning; familiarity with cloud object storage.
• AWS experience with EC2, IAM, security groups; Linux familiarity; Docker experience.
• Experience with CI/CD pipelines and production monitoring tools.

Responsibilities

• Build user interfaces with React and TypeScript or JavaScript.
• Develop backend services with Python REST APIs.
• Implement AI and agent workflows, LLM integrations, and guardrails for production use.
• Manage relational databases and cloud object storage assets.
• Deploy and operate on AWS-based Linux infrastructure; manage web servers and processes.
• Handle CI/CD, releases, monitoring, and Tier 2/3 support; troubleshoot production issues.

Skills

Python

React

LLM prompts/agents

PostgreSQL

AWS

CI/CD

Docker

Linux server ops

Testing

Tools

TypeScript

HTML/CSS

Job description

Role overview

Own maintenance and feature delivery across a digital application stack, from React interfaces and Python APIs to AI workflows, databases, and AWS-hosted services. This is a remote contract role based in India, with responsibility extending through deployment, production support, and ongoing reliability.

Responsibilities

• Build user interfaces with React and TypeScript or JavaScript, and backend services with Python REST APIs.
• Implement AI and agent workflows, LLM integrations, and practical safeguards for production use.
• Manage relational databases and application assets stored in cloud object storage.
• Deploy and operate applications on Linux-based AWS infrastructure, including web servers and application processes.
• Handle CI/CD, releases, monitoring, and Tier 2/3 support; troubleshoot production issues across code and data layers.
• Review code and maintain tests, security, and maintainability standards.

Requirements

• Strong Python skills, including asynchronous programming, API design, and testing.
• React experience covering application state, API integration, and HTML/CSS.
• Practical experience with LLM prompts, agents, validation or guardrails, and vector databases where appropriate.
• PostgreSQL skills in schema design, indexing, and query tuning, plus familiarity with cloud object storage.
• AWS experience with EC2, IAM, and security groups; familiarity with Linux, reverse proxies, and Docker.
• Experience with CI/CD pipelines and production monitoring tools.