Remote Senior Fullstack Engineer: AI Agents & Next.js

Far Coder; Northern (KY); Hybrid; USD 140,000 - 190,000; Part time

Job summary

Kakegroup is seeking a Senior Fullstack Engineer (Next.js/AI Agents) for a remote, USA-based contract position. You will work on a modern Next.js/React stack, designing agentic workflows and MCP server integrations, with a focus on UI polish and AI-driven features.

You will collaborate with design to implement polished interfaces using Material UI and translate Figma specs into production UI, while building robust RAG pipelines and integrating with multiple LLM providers.

Qualifications

• Proficient with Next.js (Pages Router) and React 18.
• Experience reasoning about multi-agent AI systems and agentic workflows.
• Strong backend experience with Postgres and building APIs (e.g., Next.js API routes).
• Strong product sense and focus on UI quality, animation, and design systems.
• Experience integrating with LLM APIs (OpenAI, Anthropic, Gemini) and/or RAG pipelines.
• Excellent written and verbal English; able to work remotely in a fast-paced environment.

Responsibilities

• Design, build, and ship fullstack features across the product, from UI to backend logic.
• Build and maintain agentic workflows, including multi-agent systems and MCP server integrations.
• Collaborate with design to implement polished, animated UI using Material UI and Figma specs.
• Build and maintain RAG pipelines and integrations with multiple LLM providers (Gemini, GPT, Claude, Perplexity).
• Work with async job processing (Inngest) and Postgres-backed data models.
• Contribute to internal tooling and back-office workflows (Retool).
• Partner with product and design to translate requirements into technical solutions.
• Write clean, maintainable code and participate in code reviews.

Skills

Next.js

React

Multi-agent AI

Postgres

APIs

UI quality

LLM APIs

English

Inngest

Tools

Inngest

Retool

Job description

Kakegroup is seeking a Senior Fullstack Engineer (Next.js/AI Agents) for a remote, USA-based contract position. You will work on a modern Next.js/React stack, designing agentic workflows and MCP server integrations, with a focus on UI polish and AI-driven features.

You will collaborate with design to implement polished interfaces using Material UI and translate Figma specs into production UI, while building robust RAG pipelines and integrating with multiple LLM providers.