73 Data Scientists jobs in Greater Toronto Area

**Work Location:**
Toronto, Ontario, Canada
**Hours:**
37.5
**Line of Business:**
Technology Solutions
**Pay Details:**
$126,100 - $164,100 CAD
This role is eligible for a discretionary variable compensation award that considers business and individual performance.
TD is committed to providing fair and equitable compensation opportunities to all colleagues. Growth opportunities and skill development are defining features of the colleague experience at TD. Our compensation policies and practices have been designed to allow colleagues to progress through the salary range over time as they progress in their role. The base pay actually offered may vary based upon the candidate's skills and experience, job-related knowledge, geographic location, and other specific business and organizational needs.
As a candidate, you are encouraged to ask compensation related questions and have an open dialogue with your recruiter who can provide you more specific details for this role.
**Job Description:**
**Department Overview**
TD Securities offers a wide range of capital markets products and services to corporate, government, and institutional clients who choose us for our innovation, execution, and experience.
With more than 6,500 professionals operating out of 40 cities across the globe, we help clients meet their needs today and prepare for tomorrow. Our services include underwriting and distributing new issues, providing trusted advice and industry-leading insight, extending access to global markets, and delivering integrated transaction banking solutions.
We are growth-oriented, people-focused, and community-minded. As a team, we work to deliver value for our clients every day.
**Job Description**
We are looking for an experienced **Senior Big Data Engineer (Engineer II)** that will work on critical initiatives at TD Securities -- the design and implementation of the Trading Risk Warehouse platform. The successful candidate will be responsible for the design and development of a software solution that will be used by Risk Analysts, Front Office Traders, and Senior Executives. This is a unique opportunity to work on cutting-edge technologies to solve problems of scale and speed. Responsibility of this position includes the following:
**Responsibilities**
+ Implement high quality and efficient codes to leverage distributed computing on Hadoop platform.
+ Ability to build new and modify existing components based on requirements for web UI, RestAPI and data pipeline (ETL).
+ Perform unit testing & integration testing.
+ Find opportunities to optimize current codes.
+ Ability to pinpoint root cause and resolve production issues.
+ Leverage best practices in continuous integration and delivery.
+ Drive transformation by continuously looking for ways to improve existing processes, architecture and software quality.
+ Explore new capabilities and technologies to drive innovation.
**Desired Skillsets:**
+ Java/JEE
+ Spark/Scala
+ Big Data/Hadoop/Hive
+ Spring Boot/Angular/RestAPI
+ Cassandra/No SQL database
+ MS SQL Server
+ Git
+ Linux
**Technical Skills**
+ 7+ years of Java/JEE experience
+ 5+ years of Big Data Technologies (Hadoop, Spark/Scala, Hive)
+ Experience in the Spring tech stack and building microservices using Spring Boot.
+ Experience in Linux environment.
+ Experience in designing and integrating with REST API.
+ Experience working with messaging technologies.
+ Experience with RDBMS, demonstrable fluency in SQL and any non-relational db such as Cassandra (is preferred).
+ Experience of Git, CI/CD toolset (Maven), Jenkins, working within an Agile environment.
+ Strong understanding of design patterns and coding practices.
+ Experience working with scalable and low latency systems.
+ A passion for simplifying and automating work, for making things better, for being efficient and helping others.
**Business Skills**
+ Good communication skills. Experience in collaborating efficiently within a global team
+ Demonstrable experience working in a fast-paced environment, working with PMs and our business sponsors
+ Nice to have - Knowledge of capital markets products including derivatives and cross-asset products
+ Nice to have - Hands-on experience with market risk and/or PnL (profit and loss).
**Additonal Information**
**Join in on what others in TD Technology Solutions are doing:**
+ Inspire a positive work environment and help champion quality, innovation, teamwork and service to the business.
+ Learn voraciously, stretch your thinking, share your knowledge and educate others.
+ Communicate and collaborate with both technical and non-technical professionals.
+ Cultivate winning relationships by building trust with business and technology partners.
+ Share our commitment to productivity, effectiveness and operational efficiency.
#LI-Tech
**Who We Are:**
TD Securities offers a wide range of capital markets products and services to corporate, government, and institutional clients who choose us for our innovation, execution, and experience. With more than 6,500 professionals operating out of 40 cities across the globe, we help clients meet their needs today and prepare for tomorrow. Our services include underwriting and distributing new issues, providing trusted advice and industry-leading insight, extending access to global markets, and delivering integrated transaction banking solutions. In 2023, we acquired Cowen Inc., offering our clients access to a premier U.S. equities business and highly-diverse equity research franchise, while growing our strong, diversified investment

The Big Data Lead Developer (Apps Dev Tech Lead Analyst - C13) is a Vice President level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities.
**Responsibilities:**
+ Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements
+ Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
+ Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
+ Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
+ Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
+ Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
+ Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary
+ Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.
**Qualifications:**
+ 6+ years of relevant experience in Big Data or systems analysis role, preferably in a financial domain
+ Strong solid understanding of the Big Data architecture and the ability to trouble shoot performance and/or development issues on Hadoop (Cloudera preferably)
+ Hands-on experience working with Hive, Impala and HBase for data curation/conformance related work
+ Hands on experience in migration project with specialization in Oracle DB
+ Strong background knowledge Java or Python.
+ Experience with Spark/Storm/Kafka or equivalent streaming/batch processing and event-based messaging
+ Strong data analysis skills and the ability to slice and dice the data as needed for business reporting
+ Knowledge of NoSQL and RDBMS databases including Redis and MongoDB.
+ Familiarity with Mesos, AWS, and Docker tools.
+ Consistently demonstrates clear and concise written and verbal communication
+ Ability to solve complex networking, data, and software issues.
+ Extensive experience system analysis and in programming of software applications
+ Experience in managing and implementing successful projects
+ Subject Matter Expert (SME) in at least one area of Applications Development
+ Ability to adjust priorities quickly as circumstances dictate
+ Demonstrated leadership and excellent project management skills
**Education:**
+ Bachelor's degree/University degree in computer engineering or computer science or equivalent experience
+ 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.
---
**Job Family Group:**
Technology
---
**Job Family:**
Applications Development
---
**Time Type:**
Full time
---
**Most Relevant Skills**
Please see the requirements listed above.
---
**Other Relevant Skills**
Apache Hadoop, Apache Hive, Apache Impala, Apache Kafka, Apache Spark, Big Data, Java, MongoDB, NoSQL, Oracle Database, Python (Programming Language), Relational Database Management System (RDBMS).
---
_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._
Citi is an equal opportunity and affirmative action employer.
Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.

**As part of the Citi Services Technology team, the Senior Big Data Developer is a senior level position responsible for the development of the team's strategic Big Data implementations, including maintaining and optimizing technologies used on-premises and adopting/extending services on public cloud for pioneer applications. The overall objective of this role is to drive applications systems analysis and programming activities.**
**Responsibilities:**
**Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements**
**Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards**
**Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint**
**Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation**
**Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals**
**Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions**
**Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary**
**Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.**
**Qualifications:**
**6-10 years of relevant experience in Apps Development or systems analysis role, with Big Data technologies, such as Spark (Scala/Python), Kafka streaming, Hadoop, HDFS, and solid understanding of Big Data architecture**
**Good understanding on data file formats, Impala, Hadoop, Parquet, Avro, Iceberg, etc.**
**Extensive experience with web services with Kubernetes, and Version control/CI/CD processes with git, Jenkins, harness, etc.**
**Public cloud experience is preferred, preferably AWS.**
**Strong data analysis skills and the ability to slice and dice the data as needed for business reporting**
**Experience working in an agile environment with a fast paced changing requirements.**
**Excellent planning and organizational skills**
**Ability to adjust priorities quickly as circumstances dictate**
**Demonstrated leadership and project management skills**
**Consistently demonstrates clear and concise written and verbal communication**
**Education:**
**Bachelor's degree/University degree or equivalent experience**
**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.**
---
**Job Family Group:**
Technology
---
**Job Family:**
Applications Development
---
**Time Type:**
Full time
---
**Most Relevant Skills**
Please see the requirements listed above.
---
**Other Relevant Skills**
For complementary skills, please see above and/or contact the recruiter.
---
_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._
Citi is an equal opportunity and affirmative action employer.
Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.

**Job Description:**
Citi is seeking a highly motivated candidate for a Lead BigData Developer position for the Client Financials Platform within Banking International and Client organization. The successful candidates will be responsible for developing and supporting BigData solutions developed using various tools and technologies as part of financial applications. Key responsibilities include interact with business partners to understand requirements, produce high quality technical & release documents, design & develop solutions for systems with large volumes using BigData, Hadoop, Hive, PySpark, Linux RHEL7, etc., provide technical walk-throughs to various stake holders (QA Team, UAT Team, etc.), communicate with internal stakeholders and work through data related inquiries and issues, and be able to work independently as well as within a team. Additional qualities include strong communication and leadership skills, ability to work in a fast-paced environment managing multiple priorities across geographies, and a passion for mentoring/developing team members.
**Education:**
Bachelor's degree in computer science or related field
**Skills and Experience:**
Strong programming skills in PySpark in a BigData environment.
Familiarity with big data processing tools and techniques.
Experience with the Hadoop ecosystem including Hive, HDFS, Sqoop, Spark, Impala, Scala, etc.,
Well versed with shell scripting and Autosys scheduler.
Good understanding of distributed systems.
Should be familiar with data warehouse concepts.
Experience with streaming data platforms.
Excellent analytical and problem-solving skills.
Experience with writing complex SQL queries.
Knowledge on data modeling and data design is essential.
Should be independent and resourceful dealing with risks/issues and resolving them in a timely manner.
Excellent communication and articulation skills.
---
**Job Family Group:**
Technology
---
**Job Family:**
Applications Development
---
**Time Type:**
Full time
---
**Most Relevant Skills**
Please see the requirements listed above.
---
**Other Relevant Skills**
For complementary skills, please see above and/or contact the recruiter.
---
_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._
Citi is an equal opportunity and affirmative action employer.
Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.

About the Role:
+ We are looking for a Senior Data Architectto build and maintain - Platform Modernization, TransformationPrograms
+ You'll be part of a Core Accounts Data team that's responsible for the full software development life cycle, upholding best-in-class engineering standards and modern methodologies.
+ This role involves writing code, collaborating with other developers,understanding business requirements, developing technical solutions, collaborating with other business partners, breaking down acceptance criteria to understand team backlog deliverables, complexities, and risks, and contributing effectively to an agile team.
Key Responsibilities:
+ Design, develop, and maintain robust, scalable, and high-performance applications
+ Partner with architects, product owners, and cross-functional teams to design scalable and distributed system
+ Follow best-in-class Big Data/ETL Applications design standards, security considerations, scalability, maintainability and resource utilization aspects
+ Ensure high levels of unit test coverage, DevOps principles and a culture of continuous delivery and improvement
+ Actively contribute to hands-on coding, code reviews, and refactoring to maintain high engineering standards
+ Ability of analyzing the results across the environment and finding potential or existing errors in code/builds
+ Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.
+ Mentor junior engineers and foster a culture of engineering excellence and continuous learning.
Skills and Qualifications:
+ 10+ years of experience
+ Excellent Understanding of Bigdata/ETL ecosystem
+ Proficiency in Apache Spark development with Scala
+ Experience in building Spark Streaming and Batch/Live streaming applications
+ Strong experience in creating applications for Big Data and other Data & Analytics technologies (Spark, Scala, Hadoop, Hive etc.)
+ Ability to analyze Spark job performance in Spark UI and apply required performance tuning
+ Experience of working with Linux Scripting, Kafka, Git, Maven, SSH
+ Well versed with creating and debugging Scala code in IntelliJ IDEA
+ Good problem solving skills
---
**Job Family Group:**
Technology
---
**Job Family:**
Applications Development
---
**Time Type:**
Full time
---
**Most Relevant Skills**
Please see the requirements listed above.
---
**Other Relevant Skills**
For complementary skills, please see above and/or contact the recruiter.
---
_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._
Citi is an equal opportunity and affirmative action employer.
Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.

The Senior Big Data Developer is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to contribute to applications systems analysis and programming activities.
We are seeking a Senior Big Data Developer to join our team. The ideal candidate will be responsible for developing, managing, and optimizing scalable data pipelines and applications. You will work closely with data engineers, data scientists, and business stakeholders to ensure efficient data processing, storage, and analysis across large datasets
**Responsibilities:**
+ Conduct tasks related to feasibility studies, time and cost estimates, IT planning, risk technology, applications development, model development, and establish and implement new or revised applications systems and programs to meet specific business needs or user areas
+ Monitor and control all phases of development process and analysis, design, construction, testing, and implementation as well as provide user and operational support on applications to business users
+ Utilize in-depth specialty knowledge of applications development to analyze complex problems/issues, provide evaluation of business process, system process, and industry standards, and make evaluative judgement
+ Recommend and develop security measures in post implementation analysis of business usage to ensure successful system design and functionality
+ Consult with users/clients and other technology groups on issues, recommend advanced programming solutions, and install and assist customer exposure systems
+ Ensure essential procedures are followed and help define operating standards and processes
+ Serve as advisor or coach to new or lower-level analysts
+ Has the ability to operate with a limited level of direct supervision.
+ Can exercise independence of judgement and autonomy.
+ Acts as SME to senior stakeholders and /or other team members.
+ Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.
**Qualifications:**
+ 5-8 years of relevant experience
+ Proven experience with big data tools and frameworks such as Hadoop, Spark, Hive, Kafka, etc.
+ Proficiency in programming languages such as Java, Scala, Python, or SQL.
+ Experience with data storage solutions (e.g., HDFS, HBase, Amazon S3).
+ Familiarity with cloud platforms like AWS, Azure, or GCP and services like EMR,
+ Strong understanding of distributed systems, data modeling, and ETL/ELT best practices.
+ Excellent problem-solving, communication, and analytical skills.
+ Experience in systems analysis and programming of software applications
+ Experience in managing and implementing successful projects
+ Working knowledge of consulting/project management techniques/methods
+ Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements
**Education:**
+ Bachelor's degree/University degree or equivalent experience
---
**Job Family Group:**
Technology
---
**Job Family:**
Applications Development
---
**Time Type:**
Full time
---
**Most Relevant Skills**
Please see the requirements listed above.
---
**Other Relevant Skills**
For complementary skills, please see above and/or contact the recruiter.
---
_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._
Citi is an equal opportunity and affirmative action employer.
Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.

The Applications Development Technology Lead Analyst is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities.
**Responsibilities:**
+ Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements
+ Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
+ Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
+ Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
+ Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
+ Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
+ Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary
+ Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.
**Qualifications:**
+ 6-10 years of relevant experience in Apps Development or systems analysis role
+ Extensive experience system analysis and in programming of software applications
+ Experience in managing and implementing successful projects
+ Subject Matter Expert (SME) in at least one area of Applications Development
+ Ability to adjust priorities quickly as circumstances dictate
+ Demonstrated leadership and project management skills
+ Consistently demonstrates clear and concise written and verbal communication
**Education:**
+ Bachelor's degree/University degree or equivalent experience
+ 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.
Citi Canada is an equal opportunity employer. Accordingly, we will make accommodations to respond to the needs of people with disabilities (including, without limitation, physical and mental health disabilities) during the recruitment process and otherwise in accordance with law. Individuals who view themselves as Aboriginals, members of visible minority or racialized communities, and people with disabilities are encouraged to apply.
---
**Job Family Group:**
Technology
---
**Job Family:**
Applications Development
---
**Time Type:**
Full time
---
**Most Relevant Skills**
Please see the requirements listed above.
---
**Other Relevant Skills**
For complementary skills, please see above and/or contact the recruiter.
---
_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._
Citi is an equal opportunity and affirmative action employer.
Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.