Senior Python Software Engineer at Quantum Technology Recruiting Inc. (QTR) – Toronto | Jobyssey

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.

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Key Responsibilities

Requirements