Full Stack Developer (Vue.js / NestJS + AI Integration) to $1500

We’re looking for a Senior Full Stack Developer on a part time role to take ownership of a major frontend migration from Vue 2 to Vue 3, maintain and scale a NestJS + PostgreSQL backend, and work on integrating autonomous AI agents into the product.
This is a hands-on role for someone comfortable working with modern frontend architecture, backend systems, and emerging AI workflows.

Responsibilities

Frontend (Vue Ecosystem)

• Lead and execute migration from Vue 2 (Options API) to Vue 3 (Composition API)
• Migrate state management from Vuex to Pinia
• Transition build setup from Webpack (Vue CLI) to Vite
• Build and maintain reusable UI components using modern libraries (Vuetify, Element Plus, TailwindCSS, etc.)
• Ensure clean, scalable frontend architecture and performance

Backend (NestJS & Database)

• Develop and maintain a NestJS backend (modules, DI, guards, interceptors, pipes)
• Design and optimize PostgreSQL schemas and queries
• Work with TypeORM or Prisma, including schema evolution and migrations
• Build and maintain asynchronous workflows using message queues (RabbitMQ, BullMQ, Redis)
• Ensure backend scalability and reliability for long-running processes

AI & Agent Integration

• Integrate LLM APIs (OpenAI, Anthropic, or open-source models)
• Build or extend autonomous agent workflows
• Implement RAG (Retrieval-Augmented Generation) using vector databases (pgvector, Pinecone, Weaviate, etc.)
• Write robust system prompts with structured (JSON) outputs and edge-case handling
• Support AI-driven features that interact with application data and workflows

Required Skills & Experience

Frontend

• Strong hands-on experience with Vue 2 and Vue 3
• Experience with Composition API
• State management: Vuex and Pinia
• Build tools: Webpack → Vite migration
• Experience with modern UI frameworks

Backend

• Advanced NestJS experience
• Strong PostgreSQL knowledge
• Experience with TypeORM or Prisma
• Background in asynchronous processing / message queues

AI / ML (Must-Have)

• Practical experience integrating LLM APIs
• Understanding of agent-based systems
• Experience with vector databases / RAG
• Strong prompt engineering skills

Nice to Have

• Experience building internal tools or automation systems
• Familiarity with open-source LLMs and self-hosted AI solutions
• Background in data-heavy or workflow-driven products

What We’re Looking For

• Senior-level ownership and technical leadership
• Ability to work independently and make architectural decisions
• Strong problem-solving mindset
• Comfortable working with fast-evolving AI technologies