AI-Powered Full-Stack Engineer (Claude/LLM)

Perform1 Pvt Ltd.

Karachi Division

On-site

PKR 1,800,000 - 3,200,000

Full time

14 days+

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Job summary

Perform1 Pvt Ltd. in Karachi, Pakistan, seeks a seasoned Full-Stack Developer with hands-on Claude API experience to build AI-powered applications.

You’ll bridge frontend and backend, design AI-enhanced features, and collaborate with product and design to ship meaningful capabilities. The role requires 3+ years in full-stack development, including AI or LLM projects; expertise in React, Next.js, TypeScript, Node.js or Python, and experience with Claude API and AI tooling.

Qualifications

3+ years of full-stack development, with at least 1 year working on AI or LLM-integrated applications.
Frontend: React, Next.js, TypeScript.
Backend: Node.js, Php, or Python (FastAPI / Express / NestJS).
AI Workflows: Tool use, RAG, agents, streaming.
Vector / Search: Pinecone, pgvector, or similar.
APIs: REST, GraphQL, WebSockets.
Understanding of LLM context windows, token limits, and cost-aware design.
Experience designing system prompts for consistent, safe AI outputs.
Familiarity with responsible AI principles, guardrails.

Responsibilities

Integrate Claude API calls, including prompt design and context management.
Build AI workflows with tool use and function calling capabilities.
Design scalable RESTful and GraphQL APIs with rate limiting and observability.
Implement secure, token-efficient prompt pipelines and retrieval-augmented generation.
Collaborate with product and design for intuitive AI-native UX.
Write clean, testable code with focus on performance and security.
Participate in code reviews, architecture discussions, and sprint planning.
Stay current with Claude ecosystem developments.