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Added 1 month ago
Senior, AI & Data Science
Welcome to the Jungle
Montreal, QC
…analysts, and digital experts to solve complex business challenges with pragmatic, production-ready…
Added 1 month ago
FG
Lead Software Engineer, Full-Stack Applications - Ratings Technology
Fitch Group
Toronto, ON
- $180,000 to $220,000 CAD / year
Fitch Ratings is seeking a Lead Software Engineer to join our global Ratings Technology team in Toronto. This is an opportunity to build mission-critical platforms while helping shape the…
Added 2 months ago
W
Senior Software Developer, LLM Infrastructure
Wealthsimple
Canada
- Full-time
As a Senior Software Engineer on the ML Infrastructure team, you will design and implement the core backend and infrastructure powering our AI systems. You will work closely with data…
Added 1 month ago
AI & Agentic Engineer, Senior
Welcome to the Jungle
Montreal, QC
Artefact is looking for a Senior AI & Agentic Engineer: a full-stack engineer who takes AI features from idea to production.
Added 1 month ago
PI
AI Engineer (Agentic Workflows)
Protocase Inc./45Drives Ltd.
NS · Sydney, Nova Scotia
- Full-time
Position Title: AI Engineer (Agentic Workflows)
Added 1 month ago
TR
Lead Cloud Platform Engineer, Azure
Thomson Reuters
Toronto, ON · Canada, Toronto, Ontario
- Full-time
This is a hands-on senior individual contributor position with broad technical authority. You will write Bicep, operate and improve our AKS footprint, review other people’s infrastructure…
Added 1 month ago
T
Senior/Staff Software Engineer, Data Platform
Terminal
Toronto, ON
- $200,000 to $295,000 CAD / year
- Full-time
…together in person in Toronto, combining early-stage speed with late-stage maturity while processing many terabytes of vehicle data every…
Added 1 month ago
H
Senior Software Engineer, Machine Learning
Hive
Remote, Canada
- $123,600 to $187,900 USD / year
- Full-time
- Remote
As a Senior Data Engineer, you’ll play a vital role in evolving our data platform, which directly determines what our customers can do, how fast our product moves, and how confidently…
Added 1 month ago
C
Senior Software Engineer
Clutch
Toronto, ON
- $160,000 to $200,000 USD / year
- Full-time
Have experience with one or more modern programming languages such as TypeScript, Python, Go, Java, C#, Rust, or Ruby.
Added 1 month ago
F
Senior Security Engineer
Forma.ai
Toronto, ON
- $160,000 to $190,000 USD / year
- Full-time
As a Senior Security Engineer, you will be a hands-on technical leader strengthening security across Forma's application, cloud infrastructure, development lifecycle, internal systems, and…
Added 1 month ago
J
Senior Power System Studies Engineer
Jacobs
Calgary, AB
- $133,800 to $175,650 USD / year
- Full-time
As a power system studies engineer, you will closely work with regional and global power systems teams to support and/or lead ongoing projects as well as business development and proposal…
Added 1 month ago
J
Senior Power System Studies Engineer
Jacobs
Toronto, ON
- $133,800 to $175,650 USD / year
- Full-time
As a power system studies engineer, you will closely work with regional and global power systems teams to support and/or lead ongoing projects as well as business development and proposal…
Added 1 month ago
F
Senior Security Engineer
Forma.ai
Toronto, ON
- Full-time
As a Senior Security Engineer, you will be a hands-on technical leader strengthening security across Forma's application, cloud infrastructure, development lifecycle, internal systems, and…
Added 1 month ago
E
Senior AI Platform Engineer
Epiq
ON
- Full-time
…collections range from thousands to millions of records. As a Senior AI Platform Engineer, you will design and build the platform our AI agents and accelerators run on, including…
Added 1 month ago
WT
Senior Software Developer, LLM Infrastructure
Wealthsimple Technologies
Remote, Canada
- $152,900 to $189,000 CAD / year
- Full-time
- Remote
As a Senior Software Engineer on the ML Infrastructure team, you will design and implement the core backend and infrastructure powering our AI systems. You will work closely with data…
Added 1 month ago
H
Senior Firmware and Embedded Software Engineer
Humanoid
Burnaby, BC
- Full-time
Strong proficiency in C and C++, with experience using Python for testing or tooling
Added 1 month ago
Senior Software Engineer, Recommendations
Lyft
Toronto, ON
Lyft is looking for software engineers from a scope of disciplines. We are growing our team with people who want to build, improve and incorporate technologies that make the lives of our…
Added 1 month ago
E
Senior DevOps Engineer
e-STORAGE
Kitchener, ON
- Full-time
We are seeking a talented Sr DevOps Engineer to join our dynamic team and contribute to the delivery of on-site and cloud-based Energy Management System (EMS) for utility grade systems. The…
Added 1 month ago
S
Applied Artificial Intelligence Engineer
SJC
Toronto, ON · North York, ON
- $110,000 to $130,000 CAD / year
- Full-time
Senior engineering ability: Write clean, documented code (Python, Go, JavaScript, etc.) and use agentic coding tools (Claude Code, Codex, Cursor, Hermes) as a core part of your development…
Added 1 month ago
XR
Senior AI - Computer Vision Engineer
XYZ Reality
Remote, Canada
- Full-time
- Remote
We’re looking for a Senior AI / Computer Vision Engineer with deep expertise in 3D computer vision and spatial AI to join the team and help develop the next generation of perception…
Added 1 month ago
S
Senior Ethical Hacker
Stantec
Toronto, ON
- Full-time
Engineer custom Python, Terraform, and Ansible extensions to enable specialized security and
Added 1 month ago
Senior Software Engineer, Full-Stack Applications (Python & React)
Fitch Group
Toronto, ON
…that support core business capabilities, partnering closely with engineers, product managers, and business stakeholders. We are looking for a highly experienced software engineer with deep…
Added 1 month ago
E
Senior SDET (IC4) - Senior Software Engineer in Test
Emburse
Toronto, ON
- Full-time
Emburse is seeking a skilled and detail-oriented Senior Software Development Engineer in Test (SDET) to join our engineering team. In this role, you will bridge the gap between software…
Added 1 month ago
S
Senior Quality Assurance Specialist
Synechron
Toronto, ON · Greater Toronto Area, Canada
- $120,000 to $125,000 CAD / year
- Full-time
Strong Python skills (pytest, pandas, numpy, cx_Oracle) and comfort with SQL (Oracle and/or Sybase/SQL Server).
Added 1 month ago
CI
Senior Quality Engineer, Real Assets, Alternative Investment Technology
CPP Investments | Investissements RPC
Toronto, ON
- Full-time
As a Senior Quality Engineer, you will design, build and implement test automation to ensure quality delivery in support of value-add technology solutions and products. You will proactively…

Fitch Group

Senior Software Engineer, Full-Stack Applications (Python & React)

Toronto, ON, Canada

FOR TORONTO ROLES ONLY: Expected base pay rates for the role will be between 140,000 CAD and 180,000 CAD.

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Job details

Pay: FOR TORONTO ROLES ONLY: Expected base pay rates for the role will be between 140,000 CAD and 180,000 CAD.
Posting language: English
Posted: Aug 19, 2026

Original job description

Senior Software Engineer, Full-Stack Applications (Python & React)

Fitch Ratings is seeking a Senior Software Engineer to join our global Ratings Technology team in Toronto. This is an opportunity to build and enhance mission-critical applications that power the workflows, analytics, and decision-making processes used by analysts across a world-leading credit ratings organization.

As a member of our Ratings Technology team, you will work on modern full-stack applications that support core business capabilities, partnering closely with engineers, product managers, and business stakeholders. We are looking for a highly experienced software engineer with deep expertise in Python and React, strong software engineering fundamentals, and a passion for building scalable, reliable, and user-focused solutions.

We are particularly interested in engineers who are excited about the next generation of software development, including the use of AI-powered technologies and large language models (LLMs) to improve applications, automate workflows, and create better user experiences.

What We Offer:

Meaningful technical impact – Build applications and services that directly support Fitch Ratings' analytical and operational workflows, used by teams across the organization.
Innovation-first culture and experimentation – Permission to challenge established patterns, explore emerging technologies including AI, and drive proof-of-concepts with access to cutting-edge tools and a community that celebrates curiosity and bold thinking
Continuous learning and career growth – Training, certifications, conferences, mentorship opportunities, and clear paths to principal/architect/leadership tracks as you establish yourself as a thought leader
Flexibility and world-class environment – Work from premier offices in Toronto with hybrid flexibility, competitive compensation reflecting your seniority, comprehensive benefits, and a culture that values both innovation and work-life harmony

We'll Count on You To:

· Design, develop, and maintain full-stack applications using Python, React, and modern software development practices.

· Build scalable backend services and APIs that support business-critical workflows and data-driven applications.

· Develop intuitive frontend experiences using React, TypeScript, and modern web technologies.

· Collaborate with cross-functional teams to understand requirements, define technical solutions, and deliver high-quality software.

· Contribute to application architecture and technical design, ensuring scalability, maintainability, security, and performance.

· Promote engineering excellence through code reviews, testing, documentation, CI/CD automation, and software development best practices.

· Explore and implement AI-powered capabilities where they can create business value, improve user experiences, or enhance operational efficiency.

What You Need to Have:

· 8+ years of professional software engineering experience building and supporting enterprise-grade applications.

· 8+ years of hands-on Python development experience, building scalable backend services, APIs, and data-driven applications using frameworks such as FastAPI, Flask, Django, or similar.

· 5+ years of hands-on React experience developing modern, responsive, and scalable web applications in production environments.

· Strong experience with TypeScript/JavaScript, HTML, CSS, and modern frontend development practices.

· Experience designing and developing RESTful APIs and integrating with third-party services.

· Solid understanding of software design principles, design patterns, object-oriented programming, data structures, algorithms, and scalable system architecture.

· Experience working with relational and NoSQL databases.

· Familiarity with Agile development methodologies and modern software delivery practices

· AI Fluency – Experience or familiarity with integrating AI-powered capabilities into software applications, including LLM APIs such as OpenAI, AWS Bedrock, Anthropic, or similar platforms. Understanding of concepts such as prompt engineering, retrieval-augmented generation (RAG), AI agents, and responsible AI practices, with the ability to evaluate and apply AI technologies to solve real business problems.

· Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.

· Strong communication and collaboration skills, with the ability to work effectively in cross-functional teams.

What Would Make You Stand Out:

Experience with Infrastructure as Code (Terraform, AWS CDK, or CloudFormation)
Familiarity with Apache Spark or other distributed processing frameworks
Experience with dbt, Airflow, or similar data pipeline orchestration tools
Knowledge of MLOps practices and model deployment
Experience working in Agile/Scrum environments
Familiarity with observability tools (e.g., Datadog, Grafana, OpenTelemetry)
Familiarity with data visualization tools like Qlik Sense, Power BI, Amazon Quicksight

If you are a seasoned technologist with a passion for innovation, a desire to shape organizational direction, and the courage to question the status quo, we would love to hear from you!

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.

For more information please visit our websites: www.fitchratings.com | www.fitchsolutions.com | www.fitchlearning.com

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 be successful in the recruitment process at Fitch Ratings you will be asked to declare any securities holdings and other potential conflicts prior to commencing employment. If 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 Affirmative 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 140,000 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.

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More about this job

Responsibilities

Design, develop, and maintain full-stack applications using Python and React to support mission-critical analytical workflows. Collaborate with cross-functional teams to define technical solutions and integrate AI-powered capabilities to enhance operational efficiency.

Requirements

Requires 8+ years of professional software engineering experience with deep expertise in Python and React. Candidates must possess strong software design fundamentals and experience with scalable backend services and modern frontend development.

Skills

Python
React
TypeScript
JavaScript
FastAPI
Flask
Django
RESTful APIs
SQL
NoSQL
Agile
LLM
Prompt engineering
RAG
CI/CD
Software architecture

Benefits

Competitive compensation
Comprehensive benefits
Training
Certifications
Mentorship opportunities
Hybrid flexibility

Visa sponsorship

Not detected in the job text

Keywords

Python
React
TypeScript
JavaScript
FastAPI
Flask
Django
RESTful APIs
SQL
NoSQL
Agile
LLM
Prompt engineering
RAG
CI/CD
Terraform
AWS
Apache Spark
dbt
Airflow
MLOps
Datadog
Grafana
OpenTelemetry
Full-stack
Software engineering
Financial services
Credit ratings
Cloud computing
Data-driven

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