Research Engineer - Evaluations

Canva; London; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading design platform is seeking a Research/Machine Learning Engineer in London to develop an evaluation system leveraging generative AI models. Responsibilities include optimizing AI agents for evaluating design quality and integrating research insights into production-ready engineering solutions. Candidates should have strong coding practices and familiarity with cloud environments, particularly AWS.

Benefits

Equity packages

Inclusive parental leave policy

Annual Vibe & Thrive allowance

Flexible leave options

Qualifications

• Strong understanding of generative AI models and architectures.
• Practical experience with evaluation strategies.
• Disciplined coding practices and experience with code reviews.

Responsibilities

• Design and optimize MLLM-as-a-Judge evaluation systems.
• Implement inference-time alignment techniques to improve model outputs.
• Establish benchmarking processes for foundation models.

Skills

Generative AI models understanding

Data-driven evaluation methodologies

Large-scale distributed model training

Machine learning with PyTorch

Cloud environments (AWS)

Tools

PyTorch

Cloud systems

Job description

Company Description

Join the team redefining how the world experiences design.

Servus, hey, g'day, mabuhay, kia ora, 你好, hallo, vítejte!

Thanks for stopping by. We know job hunting can be a little time consuming and you're probably keen to find out what's on offer, so we'll get straight to the point.

Where and how you can work

Our flagship campus is in Sydney, Australia, but London and Austria are home to part of our European operations. And you have choice in where and how you work, we trust our Canvanauts to choose the balance that empowers them and their team to achieve their goals.

Job Description

At Canva, our mission is to empower the world to design. To ensure our generative AI models are truly helpful, we are seeking a talented Research/Machine Learning Engineer to build our next-generation evaluation system by leveraging automatic evaluations.

Job Description

At Canva, our mission is to empower the world to design. To ensure our generative AI models are truly helpful, we are seeking a talented Research/Machine Learning Engineer to build our next-generation evaluation system by leveraging automatic evaluations.

About the role:

You will engineer sophisticated AI agents that can automatically assess the quality and human alignment of our generative design models. This high-impact role focuses on building the practical systems that make cutting-edge research effective, to provide a rapid feedback loop that guides the future of design generation at Canva, ultimately empowering millions of users to create.

At the moment, this role is focused on:

• Agentic Evaluation Systems: Engineering autonomous AI agents that use Multimodal Large Language Models (MLLMs) to evaluate the quality, relevance, and human alignment of generated designs.
• Inference-Time Alignment: Mastering techniques that improve model outputs without full retraining, but by inference-based methods including prompt engineering, in-context learning and Retrieval-Augmented Generation (RAG).
• Model Benchmarking & Analysis: Building a rigorous framework to systematically benchmark internal and external quality understanding models, delivering clear, data-driven insights on human alignment.

Primary Responsibilities:

• Design, build, and optimize the infrastructure for an "MLLM-as-a-Judge" evaluation system for scalable, automated feedback.
• Implement and experiment with inference-time alignment techniques (Prompt Engineering, RAG, ICL) to directly improve model output quality.
• Establish and manage a comprehensive benchmarking process to compare various foundation models on design-centric tasks.
• Analyze evaluation data to identify model failure modes and provide actionable recommendations to the research team.
• Collaborate with research scientists and ML engineers to integrate the agentic judge system into the model development lifecycle.
• Translate the latest research in LLM evaluation and agentic AI into practical, production-ready engineering solutions.

You're probably a match if you:

• You have a strong understanding of generative AI models (e.g., Diffusion Models, GANs, Transformers) and their architectures, with practical experience that informs robust evaluation strategies
• Excel at creating data-driven evaluation methodologies, turning user analytics into clear, actionable insights.
• You've successfully managed or optimized large-scale distributed model training across hundreds of GPUs
• You have a solid understanding of machine learning, have worked with PyTorch and know how to optimize such codes for speed
• You have disciplined coding practices, and are experienced with code reviews and pull requests.
• You have experience working in cloud environments, ideally AWS

Nice to Have:

• Familiarity with evaluation libraries and frameworks.
• Experience building or working with agentic AI systems or multi-agent coordination.
• Knowledge of data visualization tools to communicate findings effectively.
• A background or interest in human-computer interaction, design principles, or AI ethics.

Qualifications

Additional Information

What's in it for you?

Achieving our crazy big goals motivates us to work hard - and we do - but you'll experience lots of moments of magic, connectivity and fun woven throughout life at Canva, too. We also offer a stack of benefits to set you up for every success in and outside of work.

Here's a taste of what's on offer:

• Equity packages - we want our success to be yours too
• Inclusive parental leave policy that supports all parents & carers
• An annual Vibe & Thrive allowance to support your wellbeing, social connection, home office setup & more
• Flexible leave options that empower you to be a force for good, take time to recharge and supports you personally

Check out lifeatcanva.com for more info.

Other stuff to know

We make hiring decisions based on your experience, skills and passion, as well as how you can enhance Canva and our culture. When you apply, please tell us the pronouns you use and any reasonable adjustments you may need during the interview process.

Please note that interviews are predominantly conducted virtually.