AI Developer (Implementation & Automation)

Hirexe; South Africa; Remote; ZAR 900,000 - 1,300,000; Full time

Benefits offered by this job

Remote work (South Africa)

Flexible hours

Job summary

Hirexe is seeking a hands-on AI Developer to build AI-powered automations and MCP servers, enabling Claude to access data and tools. You will work across React and Node.js, integrating Claude and other LLMs into our products and workflows.

You will measure impact by time saved and cost reductions, owning end-to-end delivery in a fast-moving, remote team. This role requires practical LLM API experience and US-hours collaboration.

Qualifications

• Must have hands-on experience building with LLM APIs in production code (Claude preferred).
• Experience building MCP servers or tool-use integrations connecting LLMs to data/systems.
• Proficiency in React front-end development and Node.js backend.
• Daily use of AI coding tools (Claude Code) as part of workflow.
• Track record of shipping AI solutions with measurable outcomes in real-business contexts.
• Experience collaborating with US-based clients or teams and comfort with US business norms.
• Comfortable working remotely on US Eastern Time hours.

Responsibilities

• Design and build MCP servers connecting Claude to data and tools.
• Integrate Claude, OpenAI, and Gemini APIs into products and workflows.
• Transform manual processes into reliable AI automations.
• Develop features across React, Next.js, and Node.js serverless backend on Google Cloud/Firebase.
• Leverage PostgreSQL and vector search for semantic matching.
• Contribute to desktop app components (Rust core, React UI) for workflow recording and automation discovery.
• Work with Claude Code to run agents, tests and deployments.

Skills

LLM APIs experience

Claude/Claude Code

React

Node.js

AI automation shipping

Remote work with US hours

Tools

Google Cloud / Firebase

Git/GitHub

Vector search

Job description

Location: Remote – South Africa (candidates must be based in South Africa)

Working Hours: US Eastern Time (EST/EDT) – approx. 15:00–00:00 SAST, depending on US daylight saving

Employment Type: Full-time, internal team role

ABOUT THE ROLE

We're looking for a hands-on AI Developer who lives and breathes AI. You won't be using AI in a chat window. You'll build with it: calling models from code, building MCP servers that connect Claude to real business data and tools, and shipping automations that change how our team works.

You'll join a small, fast-moving team where most development is done alongside Claude Code. You'll take a process from "this is manual and painful" to a working, deployed AI solution, and you'll be able to show the time and cost it saved.

WHAT YOU'LL DO

• Design and build MCP (Model Context Protocol) servers that give Claude direct access to our data and tools, such as candidate search, sourcing, reporting and admin tooling
• Integrate Claude (Opus, Sonnet, Haiku), OpenAI and Google Gemini into our products and workflows through their APIs
• Spot manual processes across the business and turn them into reliable, production-ready AI automations
• Build and maintain features across our React web app, Next.js site and Node.js serverless backend on Google Cloud / Firebase
• Work with PostgreSQL and vector search (embeddings) to power semantic candidate matching
• Contribute to our Tauri desktop app (Rust core, React interface), which records workflows so we can find tasks worth automating
• Work day to day with Claude Code: running agents, reviews, tests and deployments under clear, documented rules
• Measure and report the impact of what you build in time saved, cost reduced and workflows improved
• Keep up with the AI landscape, then test and recommend new models, tools and approaches

MUST-HAVE EXPERIENCE

• Strong hands-on experience building with LLM APIs, especially Anthropic's Claude, in production code (not only chat interfaces)
• Experience building MCP servers, or tool-use / function-calling integrations that connect LLMs to real data and systems
• Experience with React for front-end development
• Daily use of AI coding tools, preferably Claude Code, as a core part of your development workflow
• A proven track record of shipping AI solutions and automations in real business environments, with measurable results
• Experience working with US-based clients or teams, and comfort with US business communication and expectations
• Comfortable working remotely on US Eastern Time hours

NICE TO HAVE

• Google Cloud / Firebase (Cloud Functions, Cloud Run, Firestore, Storage, Secret Manager)
• PostgreSQL, embeddings and vector search
• Next.js, Vite, Material UI and/or Tailwind
• Google AI services such as speech-to-text, video and document processing
• Experience with OpenAI and Gemini APIs alongside Claude
• Familiarity with Git/GitHub, Linear, PostHog, and Slack or HubSpot integrations

WHO YOU ARE

• AI-obsessed: you're always experimenting with new models and tools, often in your own time
• A builder: you ship working solutions, not just prototypes or ideas
• Practical and outcome-focused: you think in terms of business problems and results
• Self-directed and comfortable owning work end to end in a remote team

During the interview process, you'll walk us through your implementations in detail, including your technical choices and what you'd do differently today.