Senior Backend Engineer for Conversational AI

Probe CX; Auckland; On-site; NZD 120,000 - 180,000; Full time

Job summary

Probe Group is seeking a Senior Backend Developer to build scalable backend services and AI-powered workflows. You will own API development with Node.js/TypeScript, integrating LLMs and Generative AI into production systems, and collaborating across frontend teams to deliver end-to-end solutions.

The role emphasizes innovation, ownership, and work-life balance, with opportunities to mentor juniors and shape engineering practices in a fast-growing tech environment.

Qualifications

• 5+ years of software development experience.
• Experience building scalable backend systems and REST APIs.
• Hands-on experience with LLMs, Generative AI, or Conversational AI.
• Experience integrating AI/LLM APIs into applications.
• Experience with React.
• Strong understanding of databases, APIs, Git, and modern development practices.

Responsibilities

• Build scalable backend services and REST APIs using Node.js and TypeScript.
• Integrate LLMs and Generative AI into production applications.
• Develop Conversational AI, chatbots, AI assistants, and intelligent workflows.
• Work with databases, third-party APIs, cloud services, and distributed systems.
• Collaborate with React/frontend teams when required.
• Participate in architecture, code reviews, optimisation, and technical design.
• Mentor junior developers and contribute to engineering best practices.

Skills

Node.js

TypeScript

LLMs

Generative AI

React

APIs

Git

Cloud

Tools

OpenAI

Azure OpenAI

Anthropic

Gemini

RAG

Vector databases

Job description

Probe Group is seeking a Senior Backend Developer to build scalable backend services and AI-powered workflows. You will own API development with Node.js/TypeScript, integrating LLMs and Generative AI into production systems, and collaborating across frontend teams to deliver end-to-end solutions.

The role emphasizes innovation, ownership, and work-life balance, with opportunities to mentor juniors and shape engineering practices in a fast-growing tech environment.