Senior Back-End Developer

Senior Back-End Developer at 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.

What You’ll Be Doing

• Design and develop the scalable and innovative back-end of the nesto platform, contributing to a seamless and digital mortgage experience.
• Collaborate closely with front-end developers and the data team to build and optimize robust, high-performance data services.
• Write clean and maintainable code with a strong emphasis on solid coding principles (e.g., modularity, testability, microservices architecture).
• Apply strong technical skills in design, coding, testing, and debugging to create top-quality software.
• Troubleshoot complex issues: Investigate and resolve difficult-to-reproduce bugs, narrow down failure conditions, and perform thorough testing of new functionalities.
• Drive technical improvement: Continuously learn about the system and cutting-edge technologies, leveraging newfound knowledge to drive improvements in architecture and development processes.

Who We Are Looking For

• Bachelor's or Master's degree in Computer Science, Software Engineering, or an equivalent technical field.
• 5+ years of professional software development experience in a Back-End focused role.
• Proven professional experience with one or more of the following key technologies: Go, Python, Node.js, or C#.
• Passionate about creating highly effective applications that users will love and use.
• Eager to learn and share knowledge within the team and across the organization.
• Excellent communication skills, with the ability to explain complex technical concepts to both technical and non-technical stakeholders.
• Strong collaborative spirit, enjoying teamwork with diverse backgrounds.
• Detail-oriented with a proven ability to apply deliberate, long-term system thinking to technical design and implementation.

Preferred But Not a Must

• Experience in the financial services or mortgage industry (Fintech).

You shouldn't apply if

• You are not motivated by the challenge of building a scalable cloud-native tech platform in a high-growth scale-up environment, preferring highly stable, low-pressure roles.
• You are unwilling to invest time in writing clean, modular, and maintainable code, prioritizing speed over technical debt management.
• You prefer to avoid the collaborative aspect of integrating with Front-End developers and Data teams, or you are uncomfortable troubleshooting difficult, low-level system bugs.

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 (Hybrid model).

Diversity and Inclusion

At nesto, we believe that creativity and collaboration are the result of a diverse team. We are committed to fostering a culture of diversity, equity, inclusion, and belonging, and we strongly encourage women, people of color, LGBTQIA+ individuals, and individuals with disabilities to apply. We are committed to creating a workplace that is inclusive and welcoming to all.

Key skills/competency

• Go
• Python
• Node.js
• C#
• Microservices Architecture
• Scalable Systems
• Data Services
• API Development
• Troubleshooting
• Software Design