d1g1t

Senior Software Engineer, Backend

Toronto, Ontario · Senior

Sponsorship not specifiedDetected 16 days ago

PythonDjangoFastAPIBackend DevelopmentGitPostgreSQLRedisAWSRESTPandasNumPyLeadershipCommunicationCollaboration

About the role

We are looking for a Senior Software Engineer, Backend to join our engineering team and contribute to a large, complex production platform used by sophisticated financial services clients.
This is a hands-on backend role for someone whose career has become deeply Python-focused.
You should be comfortable navigating a mature codebase, owning features end-to-end, debugging issues across system layers, and making practical engineering decisions that balance quality, scalability, and business impact.

Collaborate with Product and Engineering to understand, refine, and shape functional requirements.
Design, build, test, deploy, and maintain backend features using Python, Django, PostgreSQL, and related technologies.
Take ownership of work from technical design through implementation, production release, and ongoing support.
Identify performance bottlenecks and implement practical, scalable improvements.
Write clean, maintainable, well-tested code that supports long-term product reliability.
Demonstrated experience owning features or technical projects from design through deployment and maintenance.

5+ years of backend software development experience.
Strong, career-depth experience with Python as your primary backend language.
Production experience with Django, or deep experience with another Python web framework such as FastAPI or Flask.
Hands-on experience with PostgreSQL, including indexing, query optimization, and diagnosing slow queries.
Ability to reason about performance, scalability, and reliability in production systems.
Familiarity with tools and technologies such as Celery, Redis, Git, and modern backend development workflows.
Clear communication skills and the ability to work independently while knowing when to align with the broader team.

Experience with trading, portfolio management, wealth management, risk, reporting, or other financial software systems.
Experience working with large datasets or complex data-heavy applications.
Experience with AWS or other cloud platforms.
Experience with NumPy, pandas, or similar Python data tools.
Background in Computer Science, Mathematics, Engineering, or a related technical discipline.
Work on a complex, high-impact platform where backend engineering decisions matter.
Contribute to a culture of innovation, collaboration, and continuous improvement where your voice is valued.
Employee and Family Assistance Program.

This listing is sourced directly from d1g1t's careers page and normalized into a canonical job model.