Senior AI Software Engineer, Full-Stack Applications - AI Innovation Teams

Fitch Group; Toronto; On-site; CAD 130,000 - 180,000; Full time

Job summary

Fitch Group in Toronto is seeking a Senior AI Software Engineer, Full-Stack Applications, to lead development of AI-powered, production-grade platforms. You will own critical components, drive architectural decisions, and collaborate with ML engineers to integrate generative AI into scalable applications.

This role offers high visibility, mentorship of engineers, and the chance to shape the future of financial tech in a fast-growing Toronto innovation hub.

Qualifications

• 12+ years of hands-on full-stack experience.
• Proficiency in Java and Python; RESTful APIs and modern web tech.
• Strong architectural and design skills; scalable systems.
• Bachelor's degree in CS/SE or related field.
• Experience leading cross-functional teams and mentoring engineers.
• Solid understanding of AI/ML integration and generative AI.
• Cloud-native experience (Docker, Kubernetes, AWS/Azure).

Responsibilities

• Architect and lead full-stack applications with AI at the core.
• Drive AI/ML integration architecture and patterns.
• Mentor engineers and drive engineering best practices.
• Collaborate with ML, product, and business stakeholders.
• Own production reliability and observability of systems.

Skills

Full-stack engineering

AI integration

Leadership

Architectural design

Cross-functional collaboration

AI understanding

Problem solving

Education

Bachelor's degree in CS/SE or related field

Tools

Docker

Kubernetes/EKS

AWS/Azure

RESTful APIs

Job description

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Senior AI Software Engineer, Full-Stack Applications - AI Innovation Teams

Business Unit: Fitch Group

Category: Information Technology

Location: Toronto, ON, CA

Date Posted: Sep 3, 2026

Senior Software Engineer, Full-Stack Applications - AI Innovation Teams

As one of the world’s top three credit ratings agencies, Fitch Ratings plays a critical role in global capital markets by providing credit analysis, ratings, research, and commentary to financial market participants. For over 100 years, Fitch Ratings has been creating value for global markets through its rigorous analysis and deep expertise, which have resulted in a variety of market leading tools, methodologies, indices, research, and analytical products. Fitch Ratings is part of Fitch Group, a global leader in financial information services with operations in more than 30 countries, which also includes Fitch Solutions. With dual headquarters in London and New York, Fitch Group is owned by Hearst.

Join our fast‑growing Toronto innovation hub, where we’re building production‑grade AI to reshape global credit decisions. Here, you won’t just ship features—you’ll help reinvent an industry using decades‑deep proprietary data and a modern tech stack, free from heavy legacy. Backed by full enterprise support, you’ll build reliable, explainable intelligence at real scale within a collaborative, outcome‑driven community. If you’re looking for purposeful work, constant learning, and a place where your impact and growth accelerate—this is where you’ll thrive.

Fitch Ratings is seeking aSenior Software Engineerto join our new AI Innovation teams in Toronto—where we're building the AI-powered platforms and applications that will transform financial analysis. This isn't about maintaining legacy systems or making incremental improvements. This is aboutleading the developmentof what comes next: intelligent applications, full-stack platforms that seamlessly integrate cutting‑edge AI capabilities, and user experiences that will fundamentally change how Ratings analysts work and how Fitch delivers insights to global financial markets.

We're at a defining moment. Fitch is making a major strategic bet on AI, investing heavily in Toronto as our innovation center, and we're building teams that combine exceptional full‑stack engineers with world‑class ML engineers. As aSenior Software Engineer, you'llown critical componentsof the applications and infrastructure that bring breakthrough AI to life—driving technical decisions, architecting scalable solutions, implementing backend services, and creating the integrations that make sophisticated ML models accessible and useful. You're joining at the perfect time tomake significant technical impactwhileshaping the directionof transformative AI-powered platforms.

We needexperienced full‑stack engineerswho understand AI's potential and canlead technical initiatives—not AI specialists, but seasoned technologists who canarchitect solutionsthat leverage generative AI, intelligent automation, and ML to transform workflows. If you're energized by "let's architect this the right way and push what's possible" rather than "this is how we've always done it," this is ahigh-impact rolewhere you'll work alongside talented ML engineers,mentor engineers, anddrive technical excellencein one of the most exciting areas of technology today.

What We Offer:

• Lead transformative full‑stack applications with AI at the core– Drive architecture and implementation of net‑new applications using Java/Springboot, Python, and REACT that integrate cutting‑edge generative AI and ML capabilities; own technical decisions that enable elegant user experiences and bring intelligent automation to life
• Shape technical direction at the intersection of full‑stack engineering and AI– Partner directly with ML engineers building breakthrough AI systems; influence architectural decisions; establish patterns for AI integration;mentor engineerswhile deepening your expertise in AI-powered applications that will define the next generation of financial technology
• Greenfield innovation with enterprise backing and ownership–Lead technical initiativesbuilding net‑new platforms from scratch withownership of architectural decisions, modern frameworks, and cutting‑edge technologies—backed by the resources, compute power, and organizational support that enable you to focus on building breakthrough solutions
• Toronto as Fitch's AI innovation hub– Be part of our strategic investment in Toronto as a center of excellence for AI‑driven innovation; work in one of North America's most vibrant tech ecosystems alongside talented full‑stack and ML engineers;establish yourself as a technical leaderin this growing innovation center
• Strategic impact and high visibility–Own production applicationsthat analysts and financial professionals use daily; see your architectural decisions directly enable sophisticated AI capabilities;drive systems that changehow global financial markets operate; gain visibility throughtechnical leadershipand meaningful contributions
• Technical leadership and influence–Drive engineering best practices,mentor team members, participate in architectural reviews, and grow toward principal/architect/leadership tracks; opportunity to establish yourself as athought leaderin AI‑powered applications with influence across teams
• Innovation‑first culture with technical ownership–Drive experimentationwith emerging technologies andshape technical direction; work with talented engineers who celebrate curiosity, embrace experimentation, and value yourtechnical perspective and experience; environment where yourleadership matters.

We'll Count on You To:

• Architect and lead full‑stack applications–Design and drive implementationof scalable application features using Java/Springboot, Python, and REACT;own architectural decisionsfor user interfaces, backend services, APIs, and infrastructure;establish technical patternsthat make AI capabilities accessible and maintainable
• Lead AI/ML integration architecture–Drive the technical approachfor integrating generative AI, LLMs, and intelligent automation into full‑stack applications;establish patternsfor connecting ML models with user experiences;own technical decisionson how AI features are architected and implemented
• Champion engineering excellence–Establish and enforceengineering best practices, conduct code reviews,mentor engineerson code quality, drive CI/CD pipeline improvements, andlead technical discussionsthat balance innovation with reliability;own technical debt managementand architectural improvements
• Drive technical decisions across teams–Lead collaborationwith ML engineers, product managers, and business stakeholders;influence technical strategy;facilitate architectural discussions; andensure alignmentbetween AI innovation and application delivery through technical leadership
• Mentor and elevate team capabilities–Provide technical mentorshipto engineers,lead knowledge‑sharing initiatives,conduct design reviews, drive technical growth through thoughtful feedback, and contribute to building aculture of engineering excellenceand continuous learning
• Balance innovation with pragmatic delivery–Drive featuresthat move fast whileestablishing engineering standards;lead technical discussionson trade‑offs;proactively identify and solve complex technical challenges; andown building applicationsthat are both cutting‑edge and production‑ready
• Own production reliability and technical excellence–Lead troubleshootingof complex issues,drive system performanceand scalability improvements,establish monitoring and observability practices, andown operational excellenceof systems you architect

What You Need to Have:

• Deep full‑stack engineering expertise–12+ yearsof hands‑on experience building web applications, withexpert‑level proficiencyin Java, Springboot, Python, REACT, and modern web technologies;proven track recordof delivering complex, production‑quality full‑stack solutions at scale
• Polyglot programming mastery–Extensive professional experiencewith both Java and Python; ability todrive technical decisionsacross different technology stacks andarchitect solutionsthat span diverse codebases
• Strong architectural and design expertise–Proven experiencedesigning maintainable, scalable systems;deep understandingof design patterns, RESTful APIs, microservices, distributed systems;ability to make and own architectural decisionsthat impact multiple teams
• Bachelor's degree in Computer Science, Software Engineering, or related field(or equivalent experience)
• Mastery of modern development practices–Expert knowledgeof software development fundamentals including test‑driven development, advanced Git workflows, sophisticated CI/CD pipelines, anddriving code qualityacross teams
• Leadership and collaboration skills–Proven abilityto lead cross‑functional teams,mentor engineers,influence technical direction, communicate complex technical concepts to diverse audiences, and drive alignment across ML engineers, product, and stakeholders
• Strategic mindset with AI understanding–Solid understandingof how AI/ML and generative AI can transform workflows;experience evaluatingemerging technologies; comfort with technical ambiguity; track record ofdriving adoptionof AI‑powered capabilities in production applications
• Advanced problem‑solving and technical depth–Exceptional analytical skills, experience navigating complex technical challenges, ability todrive multiple strategic initiatives, and proven success tackling sophisticated problems at the intersection of full‑stack engineering and AI

What Would Make You Stand Out:

• Cloud‑native architecture expertise–Deep hands‑on experiencewith Docker, Kubernetes/EKS, AWS/Azure, microservices architecture, sophisticated CI/CD pipelines, andarchitecting cloud‑native solutionsat scale
• AI integration and production experience–Hands‑on experience architecting and implementingAI/ML capabilities in production applications, working with LLM APIs, generative AI services, orbuilding systemsthat leverage emerging AI technologies;proven track recordmaking AI useful in production environments
• API architecture and system integration expertise–Expert experiencedesigning scalable RESTful APIs, architecting complex integrations, designing asynchronous workflows, andcreating robust interfacesbetween systems
• Advanced frontend architecture–Deep expertisewith modern REACT patterns, complex state management, performance optimization, andarchitecting intuitive user experiencesfor sophisticated functionality
• Technical leadership in innovation environments– History ofleading technical initiativesin fast‑paced environments,driving architectural decisionsfor greenfield products, orowning technical directionin early‑stage initiatives built from the ground up
• Mentorship and technical influence–Proven track recordof mentoring engineers,driving technical growthacross teams,leading code review culture, andestablishing engineering best practices; recognized as atechnical leaderby peers
• Financial services or complex domain expertise–Deep understandingof analytical workflows, financial products, or complex business domains; experiencetranslating business complexityinto elegant technical solutions
• Technical thought leadership–Active participationin Toronto's tech community, speaking at meetups or conferences, contributing to open source, or recognized expertise in relevant technical domains
• Passion for engineering excellence and architecture–Drive high standardsfor architectural practices, clean code, comprehensive testing, and maintainable systems;recognized for technical craftsmanshipandestablishing quality standards
• Track record of technical evolution–Demonstrated historyof driving technology adoption,leading architectural transformations, andexpanding technical capabilitiesacross teams and organizations.

If you're ready tolead the developmentof innovative AI‑powered applications,drive technical excellence, andmake strategic impactwith cutting‑edge technology—this is the moment to join us.

Why Fitch?

At Fitch Group, the combined power of our global perspectives is what differentiates us. Our global network of colleagues comes together to accomplish things greater than they ever could alone.

Every team member is essential to our business, and each perspective is critical to our success. We embrace a diverse culture that encourages a free exchange of ideas, guaranteeing your voice will be heard and your work will have an impact, regardless of seniority.

We are building incredible things at Fitch and we invite you to join us on our journey.

About Fitch Group

Fitch Group is a global leader in financial information services with operations in more than 30 countries. Wholly owned by the Hearst Corporation, we are comprised of three main businesses: Fitch Ratings | Fitch Solutions | Fitch Learning.

Fitch is committed to providing global securities markets with objective, timely, independent and forward‑looking credit opinions. To protect Fitch's credibility and reputation, our employees must take every precaution to avoid conflicts of interests or any appearance of a conflict of interest. Should you, or your immediate family, have any holdings that may conflict with your work responsibilities, you may be asked to divest yourself of them before beginning work.

Fitch Group is proud to be an Equal Opportunity and Affimative Action Employer. We evaluate qualified applicants without regard to race, color, national origin, religion, sex, sexual orientation, gender identity, disability, protected veteran status, and other statuses protected by law.

FOR TORONTO ROLES ONLY:Expected base pay rates for the role will be between 130,000 CAD and 180,000 CAD. Actual salaries will be determined on an individualized basis and may vary based on factors including but not limited to education, training, experience, past performance, and other job‑related factors. Base pay is one part of Fitch’s total compensation package, which, depending on the position, may also include commission earnings, discretionary bonuses, long‑term incentives, and other benefits sponsored by Fitch.