Toronto, On Junior python developer Jobs – 75 Openings This Week

Java Backend Lead
Citi —Mississauga, ON
- $120,800–$170,800 a year
- Full-time
- Hybrid work
- Azure
- Computer Science
- Engineering
PySpark Big Data Senior Developer - Vice President
Citi —Mississauga, ON
- $120,800–$170,800 a year
- Full-time
- Hybrid work
- Azure
- Computer Science
- Engineering
Senior QE specialist
CGI —Toronto, ON
- $65,000–$115,000 a year
- Full-time
- Azure
- Java
- AWS
Quick apply
7d
Senior Integration Engineer (Future oppourtunity)
GFL Environmental —Vaughan, ON
- DevOps
- Java
- Databases
Site Reliability Engineer III (SRE III)
Emburse —Toronto, ON
- Full-time
- Azure
- Computer Science
- DevOps
Pre-Silicon Signoff Lead - 16513
Synopsys —Mississauga, ON
- $146,000–$219,000 a year
- Doctoral degree
- Engineering
- Master's degree
kdb+ Engineer
Data Intellect —Toronto, ON
- Full-time
- Hybrid work
- Azure
- AWS
- Linux
Quick apply
2d
Firmware Engineer, Senior Staff
Qualcomm —Toronto, ON
- Full-time
- Computer science
- Doctoral degree
- Computer Science
17h
Senior iOS Tooling Engineer
Lyft —Toronto, ON
- $136,000–$170,000 a year
- Hybrid work
- Project management
- In-person
- AI
- Commuter benefits
- Dental care
Senior Manager Data Engineering
BMO Financial Group —Toronto, ON
- $94,600–$176,000 a year
- Full-time
- Hybrid work
- Azure
- DevOps
- Data analysis skills
- Tuition reimbursement
- Life insurance
2d

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Advanced degree, Ph.D. preferred, in Clinical or Medical or Life Sciences, or Master’s degree with substantial experience in the subject matter.
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Senior Manager Data Engineering
BMO Financial Group —Toronto, ON
A recruiting agency must first have a valid, written and fully executed agency agreement contract for service to submit resumes.
$94,600–$176,000 a year
2d
Senior Systems Developer/Designer (2) - Temporary Assignment Up To 18 Months
Municipal Property Assessment Corporation —Pickering, ON
Please note that MPAC prohibits employees from holding a current/valid real estate license and successful applicants must at least suspend their real estate…
$95,160–$115,796 a year
5h

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Java Backend Lead

Citi -
Mississauga, ON

Apply Now

Job details

Full-time
$120,800–$170,800 a year

Qualifications

Performance tuning
Azure
Computer Science
CSS
Bootstrap
React
Kubernetes
Engineering
NoSQL
Google Cloud Platform
Java
Master's degree
Databases
AWS
Docker
Bachelor's
Machine learning
JavaScript
SASS
REST
Redux
Natural language processing
Scrum
Software development
APIs
Agile
Kafka
Business requirements
AI
Business
Communication skills
Python
Spring framework
Software architecture
HTML
Hibernate
Design patterns

Full job description

Job Req Id:

26956686

Location(s):

Mississauga, Ontario, Canada

Job Type:

Hybrid

Posted:

Apr. 28, 2026

Discover your future at Citi

Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview

We are seeking a highly skilled and experienced Java/Backend Lead to join our dynamic development team. The successful candidate will be responsible for leading the backend engineering efforts for our Content Management Solution, which supports multiple high-traffic websites. This role requires a strong background in Java development, exceptional analytical and problem-solving skills, and a passion for building robust and scalable systems. The ideal candidate will also have a keen interest in and experience with Artificial Intelligence technologies.

Key Responsibilities

Lead the design, development, and maintenance of our backend services and APIs.
Collaborate with cross-functional teams, including front-end developers, product managers, and designers, to deliver high-quality software solutions.
Architect and implement data integration solutions, including real-time data streaming with Kafka and batch uploads.
Manage and optimize API gateways to ensure secure, reliable, and performant API consumption.
Drive performance optimization and scalability initiatives across the platform.
Mentor and guide junior developers, fostering a culture of technical excellence and continuous improvement.
Troubleshoot and resolve complex technical issues, ensuring the stability and reliability of our systems.
Stay up-to-date with the latest industry trends and technologies and advocate for their adoption where appropriate.
Contribute to the evolution of our architecture to support new features and business requirements.

Required Qualifications

Bachelor's degree in Computer Science, Engineering, or a related field.
8+ years of professional experience in backend software development.
Proven expertise in Java and its ecosystem (Spring Framework, Hibernate, etc.).
Strong understanding of software architecture principles, design patterns, and best practices.
Extensive experience with building and consuming RESTful APIs.
Solid experience with relational and NoSQL databases.
Excellent analytical and problem-solving skills, with a keen attention to detail.
Strong communication and interpersonal skills, with the ability to lead and collaborate effectively.
Preferable experience in Python, Knowledge Graphs, Search engines
Knowledge about Artificial technologies GenAI, RAG, Co-Pilot

Preferred Qualifications

Master's degree in Computer Science, Engineering, or a related field.
Experience with Artificial Intelligence, Machine Learning, or Natural Language Processing.
Hands-on experience with Apache Kafka or other message queuing systems.
Experience with API gateways (e.g., Apigee, AWS API Gateway).
Familiarity with cloud platforms (e.g., AWS, Google Cloud, Azure).
Experience with containerization and orchestration technologies (e.g., Docker, Kubernetes).
Good knowledge of JavaScript, CSS, HTML, and front-end languages such as React.js, NextJS, Web pack, Bootstrap, SASS, Express, Redux, and Flux.
Knowledge of performance tuning and optimization techniques.
Experience working in an Agile/Scrum development environment.

Education

Bachelor’s degree/University degree or equivalent experience

Job Family Group:

Technology

Job Family:

Applications Development

Time Type:

Full time

Primary Location Full Time Salary Range:

$120,800.00 - $170,800.00

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

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

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.

This job opening is for an existing job vacancy.

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.

Apply Now

Refine Your Search

junior python developer jobs in toronto, on

Java Backend Lead

PySpark Big Data Senior Developer - Vice President

Senior QE specialist

Senior Integration Engineer (Future oppourtunity)

Site Reliability Engineer III (SRE III)

Pre-Silicon Signoff Lead - 16513

kdb+ Engineer

Firmware Engineer, Senior Staff

Senior iOS Tooling Engineer

Senior Manager Data Engineering