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Senior Software Engineer; Python, Web API

Job in Toronto, Ontario, C6A, Canada
Listing for: Mphasis
Full Time position
Listed on 2026-02-14
Job specializations:
  • Software Development
    Senior Developer, Software Engineer
Job Description & How to Apply Below
Position: Senior Software Engineer (Python, Web API)
We are looking for a Senior Software Engineer with strong Python and Web API experience to join a high-impact B2C platform team. This role is ideal for someone who has built scalable, customer-facing products and can clearly articulate the features they’ve developed and the impact they’ve had.

Key Requirements

Strong hands-on experience in Python development and feature delivery

Proven experience building and enhancing B2C platforms

Candidates must clearly describe the features they have built, including functional details and business impact

Experience should include features related to:

User

Experience:

advanced search, product catalogs, seamless checkout flows to drive engagement and conversion

Payment Gateways: secure and reliable payment processing integrations

Customer Management: account management, reviews, ratings, and customer-facing tools

Scalability: systems designed to handle growth in users and transactions without performance degradation

Mobile Accessibility: responsive and mobile-friendly platforms across devices

Metrics are essential. Profiles should include measurable impact such as:

Number of users/customers onboarded per week or month

Volume of transactions or transfers processed

Performance, scalability, or conversion improvements achieved

Technical Stack
Education

Bachelor’s or Master’s degree from a Canadian University (mandatory)

Responsibilities

Design and deliver high-quality, secure features and enhancements

Collaborate on technical design and architecture decisions

Provide accurate estimates and actively participate in sprint planning

Optimize performance to meet SLA requirements in distributed systems

Ensure high security assurance across all solutions

Mentor and support other engineers, promoting best practices and fast, high-quality delivery

Please note

Infrastructure-focused roles, data pipelines, ETL, or scripting-only backgrounds are not a fit for this position

If you are a senior engineer who enjoys building scalable B2C products, working onsite with a collaborative team, and making a measurable impact, we’d love to connect.

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Position Requirements
10+ Years work experience
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