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Added 10 mins ago
MM
Manufacturing Engineer
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- Full-time
The Manufacturing Engineer plays a key role in transforming customer requirements and engineering designs into effective, efficient, and repeatable manufacturing processes.
Added 10 mins ago
AM
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Added 25 mins ago
AI
Senior Machine Learning Systems Engineer
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- Contract
We are looking for an experienced Senior Machine Learning Systems Engineer to optimize large language model (LLM) inference performance across AWS Trainium platforms, including Trainium2…
Added 25 mins ago
A
Firmware Engineer
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Montreal, QC
- $45 to $60 CAD / hour
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Added 25 mins ago
IG
Windows Server Administrator
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AB · Alberta, Canada
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Added 25 mins ago
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Added 26 mins ago
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Added 26 mins ago
A
Hardware Compliance Engineer
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Ottawa, ON
- $90,300 to $140,000 CAD / year
- Full-time
…EMI/EMC and related compliance standards. The Hardware Compliance Engineer works closely with design teams to assess requirements, mitigate compliance risks, guide design decisions, and…
Added 26 mins ago
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Test Engineer
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- $40 to $58 CAD / hour
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Job Title: Validation & Verification (V&V) Engineer Job Description
Added 26 mins ago
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- Full-time
…recovery practices, and shared documentation. Improve deployment validation and rollback to support more frequent releases with less manual intervention, and participate in the team's…
Added 40 mins ago
RL
Calibration Engineer - 12 month contract
RBR Ltd.
Ottawa, ON
- $70,000 to $90,000 CAD / year
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We are looking for a Calibration Engineer at RBR for a 12 month contract where you will help ensure the calibrations behind our instruments are rigorous, repeatable, and traceable. In this…
Added 55 mins ago
NM
Reliability Engineering
Natus Medical Incorporated
Oakville, ON
- Full-time
We are seeking an experienced Reliability Engineer to lead product reliability activities and help ensure our neurology medical devices and applications consistently deliver their intended…
Added 55 mins ago
XG
QA Engineer
Xforia Global Talent & Technology Solutions
Mississauga, ON
- Contract
We are expanding our Quality Assurance team in Mississauga, ON and looking for an experienced Senior QA Engineer (9+ Years) to join us Day 1 onsite!
Added 55 mins ago
SP
Manager, Product, Pricing & Integrations Operations
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Toronto, ON
- Full-time
…launches and repackaging efforts, moving strategy and technical validation earlier. Own license and entitlement sign-off for…
Added 1 hour ago
C
Senior Java Backend Engineer
Citi
Mississauga, ON
- Full-time
We are looking for a Senior Java Backend Engineer with hands-on experience in designing end-to-end data pipelines using Java and Spring Boot, and enterprise API design. You will own…
Added 1 hour ago
Electrical/Electronic Design Engineer
National Research Council Canada
Ottawa, ON
The engineer will contribute to the development, integration, testing, validation, and demonstration of advanced vehicle systems for automotive, commercial vehicle, rail, and other ground…
Added 1 hour ago
PE
Junior Air Emissions Engineer
Process Ecology Inc
Calgary, AB
- Full-time
Added 1 hour ago
H
Machine Learning Engineer
Hays
Toronto, ON
- Contract
We’re looking for a hands-on Machine Learning Engineer to develop and improve ML and deep learning models that power personalization across our retail ecosystem.
Added 1 hour ago
AR
Tooling Engineer Manager - Injection Mold - Automotive (35792)
Activ8 Recruitment & Solutions
Woodstock, ON
- $90,000 to $130,000 CAD / year
- Full-time
Oversee mold design, development, procurement, validation, and implementation.
Added 1 hour ago
MR
Ice Cream Process Engineer
Magnum RFM Ice Cream, Inc. (Selecta Philippines)
ON · Simcoe -Simcoe Plant - GHP
- Full-time
Working directly with the line crews on a daily basis the Process Engineer also acts as the technical trainer for line teams and provides coaching in phenomena identification, root cause…
Added 2 hours ago
EM
Process Engineer - SMT Support
Evertz Microsystems Limited
Burlington, ON
- Full-time
The Process Engineer - SMT Support is responsible for developing, optimizing, and sustaining surface mount technology (SMT) manufacturing processes used in the production of broadcast and…
Added 2 hours ago
M
Senior Manager, Commercial Management
Metrolinx
Canada
- Full-time
…management excellence and continuous improvement, including: the validation of Metrolinx project requirements, and the recommendation of commercial strategies that are consistent with the…
Added 2 hours ago
QT
Senior Linux Systems Engineer - Automation & Performance Monitoring (6-Month Contract)
Quantum Technology Recruiting Inc. (QTR)
Toronto, ON
- $70 to $90 CAD / hour
- Contract
Position: Senior Linux Systems Engineer - Automation & Performance Monitoring (6-Month Contract)
Added 2 hours ago
UH
R&D Engineer
University Health Network
Mississauga, ON
- Full-time
The R&D Engineer is generally responsible for translating clinical needs from transplant surgeons into product ideas. They research new technologies, build proof-of-concept prototypes,…
Added 2 hours ago
AI
Windows Server Administrator - SCCM
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Calgary, AB
- Full-time
…server readiness, controlled patch and remediation testing, validation of server health, and clear documentation of results. This is a testing assignment and does not include production…

Citi

Senior Java Backend Engineer

Mississauga, ON, Canada

$94,300.00 - $141,500.00 · Full-time

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Job details

Pay: $94,300.00 - $141,500.00
Job type: Full-time
Experience: 4+ years of relevant experience
Posting language: English
Posted: Oct 30, 2026

Original job description

We are looking for a Senior Java Backend Engineer with hands-on experience in designing end-to-end data pipelines using Java and Spring Boot, and enterprise API design. You will own end-to-end delivery of enterprise reporting APIs backed by complex data pipelines - from Oracle query design and ETL/ELT workflows to secure Spring Boot services deployed on shared infrastructure. The ideal candidate bridges the gap between application engineering and data platforms.

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.

Skills & Requirements

Strong in Core Java - collections, generics, streams, lambdas, exception handling, OOPs concepts, and multithreading/concurrency (executors, threads).
Strong in Spring Boot - Spring Data, Spring Batch, Spring Security.
Experience with Spring Data JPA/JDBC - repositories, entity mapping, transactions (@Transactional), connection pooling (HikariCP), and lazy/eager loading.
Hands-on with Spring Security - authentication/authorization, BCrypt, role-based access control, and securing REST endpoints.
Design, develop, and maintain RESTful APIs using Java and Spring Boot.
Good understanding of the end-to-end API development lifecycle - from design and contract definition through implementation, testing, deployment, and monitoring.
Strong understanding and implementation experience of integrating APIs with API gateways such as Apigee and Amazon API Gateway.
Proficient with Jackson (ObjectMapper config, custom serializers, strict request validation) and OpenAPI/Swagger for API documentation.
Write and optimize complex Oracle SQL queries (multi-table joins, analytic functions, subqueries, performance tuning).
Experience with Kafka, MQ, or event-streaming platforms for real-time data ingestion and processing.
Open to working on data pipelines and building ETL workflows using Java or other programming languages such as Scala as required.
Work with data warehousing concepts - fact/dimension modeling, slowly changing dimensions, and data quality checks.
Basic understanding of the Big Data ecosystem is a plus.
Good to have experience building and optimizing data workflows using tools such as Apache Spark.

Recommended Qualifications:

4+ years of relevant experience
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

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:

$94,300.00 - $141,500.00

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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

You will design and own end-to-end enterprise reporting APIs and complex data pipelines using Java and Spring Boot. Responsibilities include conducting feasibility studies, managing the full development lifecycle, and providing technical leadership to team members.

Requirements

The role requires 4+ years of experience in systems analysis and software programming with strong expertise in Java, Spring Boot, and Oracle SQL. Candidates must possess a bachelor's degree and demonstrate the ability to manage complex projects and provide advanced programming solutions.

Skills

Java
Spring Boot
Spring Data
Spring Security
RESTful APIs
Oracle SQL
ETL
Data Pipelines
Kafka
API Gateway
Apigee
Jackson
OpenAPI
Multithreading
Data Warehousing
Apache Spark

Visa sponsorship

Not detected in the job text

Keywords

Java
Spring Boot
Spring Data JPA
Spring Batch
Spring Security
RESTful APIs
Oracle SQL
ETL
ELT
Kafka
MQ
Apigee
Amazon API Gateway
Jackson
OpenAPI
Swagger
Multithreading
Data Warehousing
Apache Spark
Big Data
Systems Analysis
Software Development
API Design
Data Pipelines
Project Management
Risk Technology
Performance Tuning
Concurrency
Object-Oriented Programming
Enterprise Reporting

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