About CORTO

We are CORTO, a cutting-edge software company dedicated to revolutionising the legal industry. Our mission is to empower legal practitioners with AI-driven solutions that streamline their workflow, boost productivity, and provide more efficient client service.

Our team of AI experts and engineers collaborate to develop intelligent software tailored to the unique needs of lawyers, paralegals, and legal assistants. Our innovative AI solutions automate routine tasks, simplify document management, and enhance decision-making, allowing legal professionals to focus on what they do best—providing expert legal counsel.

We’re rapidly scaling from 80 to 150+ employees, with a highly technical workforce where around 90% of the team are developers and engineers. Working alongside our Sydney-based team of passionate high achievers, you’ll join a fast-growing technology business where things rarely stay the same for long - and if you’re smart, caring, and ambitious, you’ll be in great company.

What you’ll do

We are looking for a talented Software Engineer to join our AI and Automation Team. In this role, you will be responsible for developing and maintaining the APIs that power the Core AI capabilities at CORTO. This is an incredible opportunity to be part of an engineering team building the next generation of our products.

To make this happen you will

• Design, develop and maintain API endpoints that orchestrate prompts and responses across multiple Large Language Models (LLMs) using Python and .NET technologies
• Build and refine multi-agent orchestration systems that coordinate specialised AI sub-agents for complex research and document generation tasks
• Implement context budget management and token optimisation strategies to maximise LLM output quality within model constraints
• Maintain and enhance Retrieval Augmented Generation (RAG) pipelines that connect enterprise knowledge sources with Large Language Models (LLMs)
• Prototype and experiment with new AI techniques ensuring alignment with best practices and industry standards
• Work extensively with AWS, including S3, ECS, SQS, AWS Lambda, DynamoDB, and more
• Optimize code for performance, scalability, and maintainability
• Participate in code reviews, providing constructive feedback
• Provide technical leadership and mentorship to team members
• Work closely with cross-functional teams to understand requirements and deliver efficient solutions

What you’ll bring

You are a focused, motivated and hard-working developer who wants to join a fantastic growing team at a critical time and learn on the job to expand your skills. In addition to that you will bring:

• Demonstrated skills with Python and ASP.NET Web API with 3+ years' experience
• Experience building RESTful APIs
• Experience with MS SQL, PostgreSQL or any other relational database
• Experience with DynamoDB or any other NoSQL database
• Experience with AWS or other cloud computing platforms
• Analytical thinking and problem-solving skills

Even better if you have

• Understanding of prompt engineering principles and LLM integration patterns (function calling, tool use, structured outputs)
• Experience with observability and tracing tools (e.g. Datadog, Langfuse, LangSmith or similar)
• Experience with RAG pipelines and semantic/vector search (PGVector, embeddings)
• Familiarity with the OpenAI Responses API or Anthropic Claude API
• Experience with MCP (Model Context Protocol) or tool-augmented LLM patterns
• Experience with real-time streaming architectures (WebSockets, SSE, pub/sub)

You are the type of person who

• Positive attitude – things might not always go as expected but we maintain optimism and win, nonetheless
• Ability to think outside the box – not all our tasks are standard so neither are the solutions
• Being a team player – we reach our goals together and help each other to succeed

CORTO is an inclusive, people-first company committed to breaking down institutional barriers that keep people from reaching their potential. If you meet some, but not all the requirements above, we encourage you to still submit your application.

Why join CORTO?

• Your work matters. We solve real world problems that improve and support local, everyday law firms. So they can do their best work for the people in the communities they serve.
• Make an impact. You won’t be another ‘cog in the wheel’ here. We give full trust and autonomy for you to be heard, to work on big & complex projects – and to make a real difference.
• Work with a group of authentic, passionate people who love what they do.
• Well-funded and global. CORTO is part of ATI Global – one of the largest international LegalTech companies.
• Flexible and hybrid working. We engage, share, and collaborate on ideas and workflows.
• Career and learning opportunities - we move fast and need smart people to get us where we're going. We are a scaling business and looking for people who want to grow with us.
• Have fun with us. Celebrations. Socials. Sports teams. Access to sailing and yacht events.
• We value your well-being with additional time off, gym membership and other perks.
• Fast-paced tech environment, if we don't disrupt ourselves someone else will do it!
• Access to LEAP Home - a program unique to the ATI Group to support you in buying your primary residence.