Senior ML Developer

About nesto

Join nesto — proudly named Canadian Rocketship 2025*. A Deloitte Fast 50 company evolving alongside Canada’s top tech innovators and disrupting a 2.1 Trillion-dollar mortgage industry at light speed by building the mortgage ecosystem of the future.

BUILD lending technology with the best developers, AI engineers, and mortgage experts in the country. Work on a modern tech stack and a development framework designed to unlock your full potential and accelerate your career.

Why join us

• Hypergrowth: Deloitte Fast 50 — 3 years in a row
• Tech community credibility: TechTO Canadian Rocketship 2025*
• Industry leadership: CLA Lending Company of the Year — 4 consecutive years
• Talent magnet: CMP Top Mortgage Employer 2025
• Trusted technology: powering major financial institutions across Canada
• An entrepreneurial culture built on trust, speed, uncomfortable ambition, being stronger together, and a relentless obsession with our clients.

Who Are You

Builders. Problem-solvers. Curious minds. People who move fast, embrace innovation, and believe we’re stronger together. If you trust your skills and want to build real technology that reshapes an entire industry, join us now.

About Nesto And Nesto Cloud

Nesto is Canada’s leading provider of mortgage technology and financing solutions, managing $73B+ CAD in residential and commercial mortgages, with 1,000+ team members across 12 offices nationwide. You will be working on Nesto Cloud, Canada’s most advanced cloud platform, delivering end-to-end technology solutions for lenders in the digital age.

About The Team

Our machine learning team expertise spans the whole machine learning development cycle from data collection, all the way to model deployment and maintenance, in both computer vision and modern language models.

What You’ll Be Doing as a Senior ML Developer

• Develop scalable and innovative machine learning models.
• Collaborate closely with our DevOps and data team to build and optimize data and machine learning services and infrastructure.
• Create proofs of concept for new features that improve our processes and customer experience.
• Write clean and maintainable code with an emphasis on solid coding principles.
• Apply your strong technical skills in design, coding, testing, and debugging to create top-quality software.
• Investigate and troubleshoot difficult-to-reproduce bugs, narrow down failure conditions, and perform the first test of new functionalities with confidence.
• Continuously learn about the system and cutting-edge technologies, and use your newfound knowledge to drive improvements in your work.

Who Are We Looking For

• Bachelors, Masters or PhD in machine learning, computer science or similar degree.
• 1+ years of experience in machine learning.
• 3+ years of software development experience.
• Solid programming skills in Python (pandas, numpy, fastapi, pydantic, scikit-learn, opencv,...).
• Proven ability to automate and productionize machine learning applications and workflows, build AI-driven products on major cloud platforms (in-depth knowledge of Azure or GCP services is a plus).
• Proven ability to write efficient and testable code.
• Understanding of principles in Software Development Life Cycle, Security by Design.
• Proven ability to work with structured and unstructured data.
• A sound understanding of data security.
• Track record of rapidly iterating on prototypes, as well as maintaining, expanding and improving existing codebases.
• Effectively communicating and documenting the work so that we ensure reusability and reproducibility of code and infrastructure.
• A solid grasp on data engineering and data pipeline is a strong plus.

The Reward

• The A-Team: Work alongside high-performing talent in the industry.
• Accelerated Growth: The slope of your learning curve here will be vertical. You will touch more production systems in one year than you would in five years at a bank.
• Top-Tier Coverage: Premium benefits plan fully paid by nesto, including comprehensive insurance and unlimited access to telemedicine and mental health services for you and your family.
• Rest & Recharge: 4 weeks of vacation to ensure you stay at peak performance.
• Best-in-Class Tools: Access to the resources and tech you need to execute without friction.
• Working framework: the environment that makes you productive and enables teamwork.

Key skills/competency

• Machine Learning Development
• Python Programming
• Cloud Platforms (Azure/GCP)
• Data Engineering
• Model Productionization
• Software Development Life Cycle (SDLC)
• Computer Vision
• Natural Language Processing (NLP)
• Data Security
• Prototyping & Iteration