AI Backend Engineer for Scalable LLM Apps

Apply; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

ActAI is seeking a Backend Engineer, AI, to own the inference and orchestration layer that powers every AI interaction in the product. You will build and operate production systems turning model capabilities into fast, stable APIs used across mobile and desktop clients.

The role focuses on latency, reliability, and cost, with an emphasis on production-grade software and scalable architectures to support AI-driven features at global scale.

Qualifications

• Strong backend engineering fundamentals in production environments.
• Experience running high-throughput, low-latency services.
• Familiarity with AI inference patterns (LLMs, embeddings, multimodal).
• Comfortable debugging distributed systems under load.

Responsibilities

• Build and operate backend systems that serve AI-powered features in production.
• Design inference pipelines, orchestration layers, and service boundaries around models.
• Own production concerns: monitoring, logging, alerting, and incident response.
• Optimize latency and throughput across inference, caching, batching, and streaming.

Skills

Backend fundamentals

Distributed systems

Low latency

High throughput

Tools

Python

NodeJs

Pytorch

OpenAI/Anthropic/LLMs

SQL/NoSQL

Kubernetes

Docker

Job description

ActAI is seeking a Backend Engineer, AI, to own the inference and orchestration layer that powers every AI interaction in the product. You will build and operate production systems turning model capabilities into fast, stable APIs used across mobile and desktop clients.

The role focuses on latency, reliability, and cost, with an emphasis on production-grade software and scalable architectures to support AI-driven features at global scale.