Senior Full Stack Developer – AI Applications

Greymatter Innovationz; United States; Remote; MXN 742,000 - 907,000; Part time

Benefits offered by this job

Remote work

Job summary

Greymatter Innovationz is seeking a Senior Full Stack Developer to build modern web apps with AI-powered features. The role emphasizes backend and frontend work, API integrations, databases, and cloud tech, with a focus on leveraging AI to improve software performance.

You will work on MERN-stack-like projects, integrate LLMs, and collaborate in an Agile environment. Remote arrangements are offered with a contractor budget aligned to market norms.

Qualifications

• Strong experience in full-stack software development.
• Experience developing REST APIs and working with MongoDB.
• Familiarity with LLM integrations, generative AI, or AI-powered applications.
• Understanding of software design principles, application security, and performance optimization.
• Experience collaborating with development teams.

Responsibilities

• Build and optimize backend services, database models, and queries using MongoDB.
• Integrate LLMs and AI services into applications to support intelligent features and automation.
• Collaborate with engineering teams to design technical solutions and improve application architecture.
• Explore AI-assisted development tools to accelerate coding, testing, debugging, and modernization.
• Participate in code reviews and promote software quality, security, and maintainability.
• Work with cross-functional teams following Agile/Scrum methodologies.
• Support CI/CD processes and cloud-based application deployments.

Skills

Full-stack development

REST APIs

MongoDB

LLM integrations

AI-powered applications

Agile/Scrum

Tools

Azure OpenAI

AWS Bedrock

CI/CD

Job description

Senior Full Stack Developer – AI Applications

Location: Remote

Budget: $ 4,000 USD - Contractor

Position Overview

We are looking for a Senior Full Stack Developer to build and enhance modern web applications while incorporating AI-powered features and emerging development tools. The ideal candidate has strong experience in frontend and backend development, API integrations, databases, and cloud technologies, with an interest in leveraging AI to improve software development and application performance.

Key Responsibilities

• Build and optimize backend services, database models, and queries using MongoDB.
• Integrate LLMs and AI services into applications to support intelligent features and automation.
• Collaborate with engineering teams to design technical solutions and improve application architecture.
• Explore AI-assisted development tools to accelerate coding, testing, debugging, and modernization.
• Participate in code reviews and promote software quality, security, and maintainability.
• Work with cross-functional teams following Agile/Scrum methodologies.
• Support CI/CD processes and cloud-based application deployments.

Requirements

• Strong experience in full-stack software development.
• Experience developing REST APIs and working with MongoDB.
• Familiarity with LLM integrations, generative AI, or AI-powered applications.
• Understanding of software design principles, application security, and performance optimization.
• Experience collaborating with development teams and contributing to technical decisions.

Nice to Have

• Experience with Java, MeteorJS, Angular, or microservices.
• Exposure to Azure OpenAI, AWS Bedrock, or similar AI services.
• Familiarity with AI coding assistants and agentic development tools.
• Experience with cloud platforms, CI/CD, and DevOps practices.
• Previous technical mentoring or team leadership experience.