cover image
GTS

Python Developer – Kitchener, Ontario

On site

Kitchener, Canada

Junior

Full Time

18-10-2025

Share this job:

Skills

Communication Python NoSQL MySQL CI/CD Docker Problem-solving Attention to detail Architecture Linux Databases Organizational Skills Redis FastAPI Artificial Intelligence Kafka

Job Specifications

Overview

We are looking for a Python developer with excellent problem-solving skills to join our Data Services team. In this role, you will build and improve critical systems that power our firm's trading infrastructure, ranging from reference data ingestion to API development, database design, and compliance reporting. You will collaborate with our global technical team and gain exposure to senior management, providing unparalleled access to industry expertise and the freedom to influence technical architecture and business operations.

GTS is a collection of financial services companies spanning a wide array of asset classes and investment approaches, all powered by the combination of market expertise with innovative, proprietary technology. With roots as a quantitative trading firm continually building for the future, the GTS family of companies are able to leverage the latest in artificial intelligence systems and sophisticated pricing models to bring consistency, efficiency, and transparency to today's financial markets. GTS's electronic market maker GTS Securities accounts for 3-5% of daily cash equities volume in the U.S. and is a leading Designated Market Maker (DMM) at the New York Stock Exchange, responsible for nearly $13 trillion of market capitalization. For more information on GTS, please visit www.gtsx.com .

Responsibilities

Build and maintain data ingestion and transformation pipelines (e.g., security master lists, market data)
Develop APIs for reference data distribution and trading operations
Maintain and optimize databases
Automate processes and deploy services
Support and develop applications for compliance reporting
Maintain and improve CI/CD infrastructure

Qualifications

Requirements:

Strong proficiency in Python
Hands-on experience with relational databases (preferably MySQL)
A bachelor's degree in computer science, engineering, or a related field, or equivalent practical experience
Strong communication skills, with the ability to explain technical concepts to diverse audiences
Demonstrated experience operating in a Linux environment
Strong organizational skills and sense of responsibility
Excellent attention to detail and pride in the quality of one's work
Demonstrated ability to make informed trade-offs and design decisions
Ability to work collaboratively and autonomously, with a willingness to share knowledge and support junior team members.

Nice-to-Haves:

2+ years of professional Python experience (especially in the finance industry)
An interest in ownership and a desire to become a subject matter expert
Familiarity with:
A Python REST API framework (preferably FastAPI)
The Airflow scheduler
Message queues, preferably Kafka
NoSQL data stores, preferably Redis
Containerization and orchestration technologies, preferably Docker and Nomad respectively

We're proud to employ some of the leading talent in the industry, and we work to ensure our employees enjoy a high quality-of-life.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, age, national origin, or protected veteran status, and will not be discriminated against on the basis of disability .

What We Offer:

In-office perks - Free lunch daily and access to a fully stocked pantry (when working in the office).
Casual dress code (when working in the office).

Unsolicited resumes

We do not accept unsolicited headhunter and agency resumes and will not pay fees to any third-party agency or company that does not have a signed agreement with GTS.

About the Company

GTS is a collection of financial services companies spanning a wide array of asset classes and investment approaches, all powered by the combination of market expertise with innovative, proprietary technology. With roots as a quantitative trading firm continually building for the future, the GTS family of companies are able to leverage the latest in artificial intelligence systems and sophisticated pricing models to bring consistency, efficiency, and transparency to today's financial markets. GTS's electronic market maker G... Know more