Senior Python Developer

Lanson Partners; Sydney; Hybrid; AUD 160,000 - 240,000; Full time

Job summary

Lanson Partners is seeking multiple Senior Python Developers to join a high-performing engineering team building production-grade AI capabilities across a large enterprise environment. This is a software engineering role first, with Python at the centre.

You’ll design, build and operate backend services and AI-enabled workflows used across customer-facing and internal platforms, with a strong focus on production quality, reliability and scalability.

Qualifications

• Strong Python backend development experience.
• Ability to design scalable, production-grade systems.
• Experience with APIs, microservices, testing, CI/CD and production support.
• Hands-on experience with LLMs, agents, RAG or MCP.
• Exposure to LangGraph, LangChain or Google ADK.
• Experience with cloud platforms (AWS, GCP, Azure).

Responsibilities

• Design, build and operate backend services and AI-enabled workflows.
• Develop production-grade AI capabilities across enterprise platforms.
• Ensure production quality, reliability and observability.
• Contribute to architecture, engineering standards and scalable solutions.
• Collaborate on CI/CD, containerised deployment and monitoring.

Skills

Python

Backend development

APIs

Microservices

CI/CD

Production support

Communication

Tools

LangGraph

LangChain

Google ADK

AWS

GCP

Azure

Job description

We’re looking for multipleSenior Python Developersto join a high-performing engineering team building production-grade AI capabilities across a large enterprise environment.

This is a software engineering role first, with Python at the centre. You’ll design, build and operate backend services and AI-enabled workflows used across customer-facing and internal platforms, with a strong focus on production quality, reliability and scalability.

What you’ll be working on

You’ll build and support:

• Python backend services and APIs
• Production agentic AI workflows
• RAG and enterprise knowledge solutions
• MCP integrations and AI-enabled tooling
• Human-in-the-loop and headless agent workflows
• LLM evaluation and quality frameworks
• Enterprise integrations with internal platforms and data sources
• CI/CD, containerised deployment and production observability

What we’re looking for

You’ll ideally have:

• Strong commercial Python development experience
• Deep backend software engineering fundamentals
• Experience designing scalable, maintainable production systems
• Hands‑on experience with LLMs, agents, RAG or MCP
• Exposure to frameworks such as LangGraph, LangChain or Google ADK
• Experience with cloud platforms such as GCP, AWS or Azure
• Strong understanding of APIs, microservices, testing, CI/CD and production support
• Ability to explain design decisions, trade‑offs and failure scenarios clearly

AI experience

We’re particularly interested in engineers who have moved beyond prototypes and have built real production AI systems.

Relevant experience could include

• Agent orchestration
• Retrieval and grounding
• Prompt and agent evaluation
• Guardrails and human oversight
• Model integration
• Observability and regression testing
• AI-assisted software delivery

The opportunity

This is a chance to work on enterprise‑scale AI engineering in an environment where Python, software engineering and production AI are all central to the role.

You’ll remain hands‑on while contributing to architecture, engineering standards and the evolution of AI‑enabled systems across the organisation.

We are looking for both mid‑level and senior developers. Salaries range between $160,000 - $240,000 plus bonus.

3 days in the office per week.