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Senior Full Stack Engineer (Digital Mortgages)

Flexiti Financial

Flexiti Financial

Software Engineering
Multiple locations
Posted on Oct 18, 2025

What’s in it for you as an employee of QFG?

  • Health & wellbeing resources and programs

  • Paid vacation, personal, and sick days for work-life balance

  • Competitive compensation and benefits packages

  • Work-life balance in a hybrid environment with at least 3 days in office

  • Career growth and development opportunities

  • Opportunities to contribute to community causes

  • Work with diverse team members in an inclusive and collaborative environment

We’re looking for our next Senior Full Stack Engineer. Could It Be You?

This is a unique opportunity to combine your passion for full-stack engineering with your expertise in the rapidly evolving world of mortgage lending and AI-driven products, all while driving our technological evolution.

Need more details? Keep reading…

As a Full Stack Engineer specializing in Digital Mortgages at Questrade, you will play a pivotal role in shaping the future of our digital mortgage offerings. You'll be instrumental in building a direct-to-consumer mortgage product, leveraging AI for the fastest mortgage experience, and establishing the core infrastructure for our new digital mortgage business.

  • Platform Development: Architect, design, develop, and maintain robust, scalable, and secure full-stack applications for Questrade's mortgage business, leveraging modern architectural patterns, micro frontend approaches, and best-in-class technologies.
  • Infrastructure Expansion: Drive the expansion of prime mortgage lending, ensuring seamless integration, high performance, and future scalability.
  • New Product Launches: Lead the development and launch of new prime mortgage capabilities for Questrade clients, from ideation to deployment, with an emphasis on speed-to-market and quality.
  • Growth Portfolio Innovation: Contribute to the architecture, build, and delivery of other new alternative trading products within the dedicated Growth Portfolio entity, actively identifying and adopting emerging technologies.
  • API Design & Integration: Create, document, and integrate with clear, efficient, and secure APIs (including RESTful and WebSocket APIs) to facilitate all aspects of mortgage transactions, setting standards for integration and developer experience.
  • Team Leadership & Mentorship: Coach and mentor junior and intermediate team members, fostering a culture of continuous improvement, knowledge sharing, and adoption of innovative development practices within the software development team.
  • Operational Support: Provide expert support for all prime mortgage solutions, ensuring system stability and reliability through proactive monitoring and incident resolution.
  • Efficiency & Automation: Identify opportunities to automate workflows, optimize system performance, and enhance development pipelines to boost team efficiency and accelerate delivery cycles.
  • Problem Solving: Diagnose and troubleshoot complex technical issues, ensuring high availability and optimal performance of mortgage origination systems.
  • Collaboration: Work closely with product owners, developers, QA engineers, and other stakeholders to translate business requirements into cutting-edge technical solutions.
  • Research & Innovation: Stay abreast of the latest trends and technologies in residential lending space, actively bringing innovative solutions and new AI tools to the team to maintain our competitive edge.

So are YOU our next Senior Full Stack Developer? You are if you…

  • Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
  • 5+ years of experience in software development, with a strong focus on building scalable and resilient systems and user interfaces.
  • Proficiency in modern frontend frameworks (e.g., Angular, React, VUE, React Native).
  • Proficiency in one or more modern backend programming languages (e.g., C#, Java, Go, Python, Node.js), with a preference for Java and Spring Boot.
  • Experience designing and building highly interactive and responsive web and mobile applications.
  • Experience designing and building RESTful and WebSocket APIs.
  • Solid understanding of object-oriented programming (OOP) and SOLID principles.
  • Experience with relational and/or NoSQL databases, and optimizing applications for large datasets.
  • Experience with event-driven architecture and message queues (e.g., PubSub, Kafka, RabbitMQ).
  • Experience with state management libraries and patterns.
  • Experience with unit and integration testing frameworks and practices (e.g., Jest, Mira, Cypress).
  • Proven ability to design and architect complex, high-availability systems with a focus on performance, security, and maintainability.
  • Exceptional analytical and problem-solving abilities, with a keen eye for detail and a proactive approach to issue resolution.
  • Excellent verbal and written communication skills, with the ability to articulate complex technical concepts clearly to both technical and non-technical audiences.
  • A strong team player who thrives in a collaborative environment and is eager to share knowledge and expertise, fostering a culture of continuous learning.
  • A self-starter with a proactive mindset and a relentless drive to deliver high-quality solutions and push technological boundaries.

Additional kudos if you…

  • Experience with micro frontend architectures is desired.
  • Experience with cloud platforms (e.g., GCP, Azure, AWS) and containerization technologies (e.g., Docker, Kubernetes) is a plus.

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