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Added 15 mins ago
I
Senior Mechanical Engineer (Semiconductor Packaging)
Inpho
Ottawa, ON · Kanata, ON
- Full-time
We are looking for a Senior Mechanical Engineer who thrives at the intersection of precision design and robust process development to help us bring our optical subassemblies to the global…
Added 30 mins ago
PE
PV Designer
Polaron Energy
Toronto, ON · North York, ON
- Volunteer
Polaron Energy Corp. is seeking a motivated and detail-oriented Solar PV System Designer to join the Commercial department, supporting the design, planning, coordination, and delivery of…
Added 30 mins ago
O(
Quality Engineer - 6-month contract
OTIP (Ontario Teachers Insurance Plan)
Waterloo, ON
- Contract
Reporting to the Senior Manager, DevOps & System Integration, the Quality Engineer is responsible for creating, reviewing, executing, and documenting the tests necessary to ensure that…
Added 45 mins ago
Senior Software Engineer - Mobile (React Native/iOS/Android)
BitGo
Toronto, ON
BitGo is hiring a Senior Mobile Software Engineer to build the apps our retail users use to manage and move digital assets. You will own features from design through release, with a focus…
Added 45 mins ago
Senior Software Engineer - Mobile Backend
BitGo
Toronto, ON
BitGo is looking for a Senior Software Engineer (Backend) to join our Mobile team and help us build the first-time user experience for our retail users.
Added 1 hour ago
TW
Repair Solutions Engineer II
T.D. Williamson
Edmonton, AB · Canada Edmonton
- Full-time
…individuals from other engineering specialties for finished system or…
Added 1 hour ago
Senior Backend Engineer II - Patient Experience
Prenuvo
Vancouver, BC
We're looking for a Senior Backend Engineer II to join our Patient Experience team and own the communications platform that keeps patients informed throughout their journey: booking…
Added 2 hours ago
AI
Senior Embedded Software Engineer
Aversan Inc.
Montreal, QC
- Full-time
We are currently seeking a qualified Senior Software Developer to join our team.
Added 2 hours ago
Concepteur(trice) mécanique senior / Senior Mechanical Designer
Primero Group
Quebec, QC
As a Senior Mechanical Designer, you will be responsible for the development of layouts, mechanical detail drawings, 3D models, 2D drawings and general arrangements in accordance with…
Added 2 hours ago
C
Senior Software Engineer
CARFAX
London, ON
- $93,000 to $139,000 CAD / year
- Full-time
Writing high-performing, robust code to guarantee fast and accurate delivery of new system features on high-visibility projects.
Added 2 hours ago
A
Staff Software Engineer - Open Source Data Platform (ODP)
Acceldata
Kitchener, ON
- Full-time
We are seeking a Staff Engineer with at least 9 years of experience in distributed systems or data platform development. In this role, you will be a technical leader responsible for…
Added 2 hours ago
R
SCADA Transmission Engineer
Raise
Burnaby, BC
- Full-time
The SCADA Transmission Engineer to join our clients team and play a key role in delivering complex, multi-discipline capital projects. In this role, your primary focus will be delivering…
Added 2 hours ago
ED
Sr Software Developer (Lead) - EN 178
Export Development Canada | Exportation et développement Canada
Toronto, ON
- $96,557 to $128,743 CAD / year
- Full-time
Software Engineer 18: Salaries typically range from $96,557 to $128,743 annually, based on qualifications and experiences, plus a performance-based incentive
Added 2 hours ago
ED
Sr Software Developer (Lead) - EN 178
Export Development Canada | Exportation et développement Canada
Calgary, AB
- $96,557 to $128,743 CAD / year
- Full-time
Software Engineer 18: Salaries typically range from $96,557 to $128,743 annually, based on qualifications and experiences, plus a performance-based incentive
Added 2 hours ago
P
Concepteur(trice) mécanique senior / Senior Mechanical Designer
Primero
Montreal, QC
- Full-time
As a Senior Mechanical Designer, you will be responsible for the development of layouts, mechanical detail drawings, 3D models, 2D drawings and general arrangements in accordance with…
Added 2 hours ago
ED
Sr Software Developer (Lead) - EN 178
Export Development Canada | Exportation et développement Canada
Montreal, QC
- $96,557 to $128,743 CAD / year
- Full-time
Software Engineer 18: Salaries typically range from $96,557 to $128,743 annually, based on qualifications and experiences, plus a performance-based incentive
Added 2 hours ago
T
Full Stack Engineer
TEEMA
Toronto, ON
- $70 to $75 CAD / hour
- Contract
We are looking for a Senior Full Stack Developer to join a collaborative Agile technology team building and enhancing cloud-native applications.
Added 2 hours ago
CG
Ingénieur mécanique principal / Senior Mechanical Engineer
Calian Group
Vaudreuil-Dorion, QC
- Full-time
We are currently seeking a candidate for the position of Senior Mechanical Design Engineer. The successful candidate will lead the design, analysis, development, production, maintenance and…
Added 3 hours ago
G
Integrations Engineer I (Remote, Canada)
GoCanvas
Remote, Canada
- Full-time
- Remote
The Integrations Engineer I will entail transforming customer requirements into complete solutions - including custom, code-based integrations when pre-built connectors aren't enough - that…
Added 3 hours ago
SL
Senior UI/UX Software Engineer (UE5)
SkyBox Labs
Burnaby, BC
- Full-time
SkyBox Labs is looking for a Senior UI/UX Engineer to join our team on an ambitious AAA co-development project set within a highly anticipated universe.
Added 3 hours ago
SL
UI/UX Software Engineer (UE5)
SkyBox Labs
Burnaby, BC
- Full-time
SkyBox Labs is looking for a Senior UI/UX Engineer to join our team on an ambitious AAA co-development project set within a highly anticipated universe.
Added 3 hours ago
WI
Lead Instrumentation & Control Engineer, Resources
WSP in Canada
Sudbury, ON · Greater Sudbury, ON
- Full-time
…Sudbury, Ontario OR Saskatoon, Saskatchewan office as a Lead I&C Engineer, you will support as a senior subject matter expert in the instrumentation and controls engineering for both new…
Added 3 hours ago
WI
Senior Instrumentation & Controls Engineer, Resources
WSP in Canada
Sudbury, ON · Greater Sudbury, ON
- Full-time
…our Sudbury, Ontario or Saskatoon Saskatchewan office as a Senior I&C Engineer, you will support as a senior subject matter expert in the instrumentation and controls engineering for both…
Added 3 hours ago
WI
Lead Instrumentation & Control Engineer, Resources
WSP in Canada
Sudbury, ON · Greater Sudbury, ON
- Full-time
…Sudbury, Ontario OR Saskatoon, Saskatchewan office as a Lead I&C Engineer, you will support as a senior subject matter expert in the instrumentation and controls engineering for both new…
Added 3 hours ago
WI
Lead Electrical Engineer, Resources
WSP in Canada
Sudbury, ON · Greater Sudbury, ON
- Full-time
…Ontario or Saskatoon Saskatchewan office, as the Lead Electrical Engineer, you will lead as a senior subject matter expert in the electrical design for both new construction and brownfield…

Citi

Senior Python Engineer

Mississauga, ON, Canada

$120,800.00 - $170,800.00 · Full-time

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Job details

Pay: $120,800.00 - $170,800.00
Job type: Full-time
Apply by: Oct 13, 2026
Experience: 6+ years of hands-on experience in Application Development, primarily with Python.
Posting language: English
Posted: Oct 9, 2026

Original job description

Job Description

We are seeking a highly experienced and technically proficient Senior Python Developer with 6+ years of hands-on experience to design, develop, and deliver critical, scalable, highly available, and performant applications. This role demands deep technical expertise, a strong focus on execution, and a proven ability to deliver robust software solutions, particularly within quantitative and market risk domains.

Key Technical Responsibilities:

Lead hands-on implementation and architecture of Python frameworks for scalable, resilient, and performant applications.
Develop solutions adhering to architectural standards, utilizing in-depth technical and business domain knowledge.
Enforce industry-standard SDLC best practices and contribute to code quality through reviews.
Collaborate with cross-functional teams (Risk, Quants, FO, DevOps, Production Support) for seamless delivery.
Drive development for Stress Testing and Regulatory Risk projects in the Market Risk domain.
Manage project technical aspects, including planning, governance, and taking ownership of initiatives.
Deliver high-quality solutions independently within a globally matrixed environment and under tight deadlines.

Required Technical Qualifications:

I. Core Python & System Development:

6+ years of hands-on experience in Application Development, primarily with Python.
Expert-level Python 3.x proficiency for scalable, resilient, and high-performance applications.
Advanced knowledge of Python frameworks (FastAPI, Django, Flask), best practices, and design patterns (OOP).
Strong understanding of software architecture principles and distributed system design (Microservices, Event-Driven Architecture).
Extensive experience with relational (PostgreSQL, Oracle, SQL Server) and NoSQL databases (MongoDB, Cassandra, Redis), including advanced SQL.
Proven expertise in designing, developing, and securing RESTful APIs and integration patterns.
Hands-on experience with CI/CD systems (Jenkins, GitLab CI, GitHub Actions, Bitbucket Pipelines) for automated deployment.
Highly experienced with Unix-based operating systems.

II. Cloud & DevOps:

Strong background in cloud platforms (AWS, Azure, GCP), including containerization (Docker) and contributing to Kubernetes orchestration.
Advanced troubleshooting, debugging, and performance optimization for distributed systems.
Proficiency in automated testing frameworks (Pytest, unittest) and TDD methodologies.
Solid understanding of secure coding practices and application security principles (OWASP Top 10).
Expertise in Git (Bitbucket, GitHub) for advanced branching and pull request workflows.

III. Quantitative & Risk Domain:

Experience developing Quantitative/Calc-intensive Python solutions with advanced computation libraries.
Sound understanding and exposure to various Risk Methodologies.
Exposure to mathematical modeling/finance insights.

IV. Artificial Intelligence (AI) Integration (Exposure):

Exposure to AI/ML tools and frameworks (TensorFlow, PyTorch, scikit-learn).
Practical experience with AI tools (Copilot, Devin, Claude/Gemini/GPT) for development workflows.
Experience with Agentic AI tools, including writing Agents and Skills, and contributing to Agentic frameworks.
Understanding and practical application of Generative AI concepts in software development.

Professional Skills:

Deep understanding and practical experience with Agile/Scrum methodologies.
Exceptional ability to manage priorities and tasks effectively.
Strong analytical, logical, systems thinking, and critical analysis skills.
Excellent written and verbal communication for diverse audiences.
Ability to work independently, take ownership, and collaborate effectively in global teams.

Desirable Qualifications:

Polyglot Programming Exposure (e.g., Java).
Big Data Technologies (Apache Spark, Hadoop, Kafka) and data warehousing.
Frontend Development (React, Angular, Vue.js).
Relevant Cloud or Industry Certifications.
Experience with banking domain (pricing, risk), CFA/FRM certification.

Key Focus Areas / Desirable Skills

• Foundational Models: Gemini, OpenAI, Claude, Llama, Local Models

• Machine Learning: PyTorch, TensorFlow, Fine-tuning

• Frameworks: LangChain, LlamaIndex, Hugging Face

• Retrieval Augmented Generation: PostgreSQL, Vector DBs, Advanced Retrieval

• Orchestration: LangGraph, Multi-Agent Systems

• Development: Python, FastAPI, Async Programming

• Deployment: Docker, Production APIs, Monitoring

• Applied Methodology: Prompt Engineering, Workflow Design, GenAI Optimization

Education:

Bachelor’s degree/University degree or equivalent experience in Computer Science, Engineering, or Technology
Master’s degree preferred

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

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Job Family Group:

Technology

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Job Family:

Applications Development

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Time Type:

Full time

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Primary Location Full Time Salary Range:

$120,800.00 - $170,800.00

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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Automated Processing and AI

We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

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This job opening is for an existing job vacancy.

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Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.

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More about this job

Responsibilities

Lead the architecture and implementation of scalable, high-performance Python frameworks for quantitative and market risk applications. Collaborate with cross-functional teams including Quants, Risk, and DevOps to deliver robust software solutions within a global environment.

Requirements

Requires 6+ years of hands-on Python development experience with expertise in system architecture, distributed systems, and cloud platforms. Candidates should possess strong analytical skills and experience in quantitative or risk-intensive domains.

Skills

Python
FastAPI
Django
Flask
PostgreSQL
SQL
AWS
Azure
GCP
Docker
Kubernetes
CI/CD
Pytest
Git
Generative AI
Machine Learning

Visa sponsorship

Not detected in the job text

Keywords

Python
FastAPI
Django
Flask
PostgreSQL
NoSQL
AWS
Azure
GCP
Docker
Kubernetes
CI/CD
Jenkins
Git
Pytest
TDD
Microservices
Event-Driven Architecture
Generative AI
Machine Learning
PyTorch
TensorFlow
Agile
Scrum
Market Risk
Quantitative Analysis
RESTful APIs
System Architecture
Cloud Computing

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