Senior Python Software Engineer

Quantum Technology Recruiting Inc. (QTR); Toronto; Hybrid; CAD 100,000 - 150,000; Full time

Job summary

Quantum Technology Recruiting Inc. (QTR) is seeking a Senior Python Engineer for a growing financial technology firm in Downtown Toronto. This role involves building scalable backend systems that support investment operations and portfolio analytics.

The ideal candidate will collaborate with engineering, quantitative, and business teams, focusing on high-performance solutions using Python and Rust. A degree in a related field and strong backend experience are required. The position supports hybrid work arrangements.

Qualifications

• Degree in Computer Science, Engineering, Mathematics, Finance, or a related field.
• Strong backend software engineering experience with languages such as Python, Rust, Java, Go, or C++.
• Experience designing APIs, distributed systems, and scalable backend applications.

Responsibilities

• Collaborate with stakeholders to integrate financial data into core platform services.
• Partner with teams to design functionality and improve systems.
• Build and maintain backend services and APIs within a microservices architecture.

Skills

Backend software engineering

Python

Rust

API design

Distributed systems

Database management

Education

Degree in Computer Science or related field

Tools

AWS

Job description

Position: Senior Python Engineer
Location: Downtown Toronto, Hybrid/Onsite
Salary Range: $100K-$150K
Job Type: Permanent
Posting Type: Open Vacancy

We're partnering with a growing financial technology firm looking to add a Senior Backend Engineer to their engineering team in Toronto.

This position focuses on building scalable backend systems that support investment operations, portfolio analytics, risk management, and financial data workflows across a sophisticated cloud-native platform used within capital markets environments.

You'\'ll work closely with engineering, quantitative, and business teams to design and deliver high-performance solutions handling complex financial datasets and workflows across multiple asset classes.

Key Responsibilities

• Collaborate with internal and external stakeholders to understand business requirements and integrate financial and market data into core platform services
• Partner with quantitative, trading, and risk-focused teams to design new functionality and improve existing systems
• Develop an understanding of financial instruments, market data feeds, and investment workflows, particularly across rates and FX products
• Build and maintain backend services and APIs within a modern microservices architecture
• Design scalable cloud-native applications and distributed systems within AWS environments
• Contribute to backend development primarily using Python and Rust
• Model and manage complex financial datasets across multiple database technologies, including relational and NoSQL systems
• Support performance optimization, observability, reliability, and ongoing platform enhancements

Requirements

• Degree in Computer Science, Engineering, Mathematics, Finance, or a related field
• Strong backend software engineering experience with modern programming languages such as Python, Rust, Java, Go, or C++
• Experience designing APIs, distributed systems, and scalable backend applications
• Experience working with databases and data modelling concepts
• Interest in financial systems, trading platforms, risk management, or capital markets environments
• Exposure to cloud infrastructure and AWS services is an asset
• Strong problem‑solving skills and interest in working on complex technical and business challenges

All applications are reviewed by our recruitment team, and hiring decisions are made by people. We may also use AI‑enabled tools to support parts of the application review process.