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Added 12 hours ago
GD
Software Engineer
General Dynamics Missions System International
Ottawa, ON
- $85,000 to $110,000 CAD / year
- Full-time
Demonstrated experience building desktop or embedded Java applications (not exclusively web/microservices)
Added 15 hours ago
J
Application Security Engineer
Jobgether
Canada
- Full-time
Conduct application security reviews: Perform threat modeling and secure code reviews for Java and Python microservices.
Added 16 hours ago
DT
Quality Engineer with Automation
Diligente Technologies
Canada
- Contract
Results-driven Quality Engineer with strong hands-on experience in test automation, quality strategy, and AI-enabled quality engineering practices. Responsible for designing, developing,…
Added 16 hours ago
AS
Full Stack Developer
Apex Systems
Toronto, ON
- $55 to $67 USD / hour
- Contract
We are seeking an Expert Full Stack Developer to design, build, and maintain both front-end interfaces and back-end systems, including APIs, microservices, databases, and cloud deployments.…
Added 16 hours ago
J
Application Security Engineer
Jobgether
Canada
- Full-time
Conduct application security reviews: Perform threat modeling and secure code reviews for Java and Python microservices.
Added 16 hours ago
IG
Full Stack Developer
Insight Global
Toronto, ON
- $50 to $60 CAD / hour
- Contract
Insight Global is seeking an expert Full Stack Developer to design, build, and maintain both front-end interfaces and back-end systems, including APIs, microservices, databases, and cloud…
Added 16 hours ago
C
Technical Lead
Cognizant
Toronto, ON
- Full-time
7+ years of software development experience with strong expertise in Java or Python, including REST APIs and microservices.
Added 16 hours ago
C
Senior Generative AI Engineer
Cognizant
Toronto, ON
- Full-time
7+ years of software development experience with strong expertise in Java or Python, including REST APIs and microservices.
Added 17 hours ago
Senior Core Java Engineer
Capgemini
Montreal, QC
We are seeking a Senior Core Java Engineer to design, develop, and support high-performance, scalable enterprise applications. The ideal candidate will have strong expertise in Core Java,…
Added 17 hours ago
C
Principal Backend Engineer Vice President
Citi
Mississauga, ON
- Full-time
Citi is looking for a Principal Backend Engineer to take strategic ownership of the backend systems powering a global digital experience platform that serves hundreds of thousands of…
Added 19 hours ago
RB
Lead Senior Software Engineer
Royal Bank of Canada
Toronto, ON
- Full-time
As a Senior Java Software Engineer, collaborate with Solution Architects, Software Engineers, and others. You will lead the design and hands-on development of innovative, high performing…
Added 1 day ago
TT
Principal Engineer
Tundra Technical Solutions
Markham, ON
- $90 to $105 CAD / hour
- Contract
Our client is seeking a senior, hands-on Principal Software Engineer to help shape and deliver the next generation of its enterprise technology landscape.
Added 1 day ago
T
Quality Engineer II
TD
Toronto, ON
- Full-time
…accountability for reliable automated regression coverage across APIs, microservices, integrations, and critical end-to-end payment…
Added 1 day ago
R
Lead Senior Software Engineer
RBC
Toronto, ON
- Full-time
As a Senior Java Software Engineer, collaborate with Solution Architects, Software Engineers, and others. You will lead the design and hands-on development of innovative, high performing…
Added 1 day ago
CO
Staff Software Engineer
Capital One
Toronto, ON
- Full-time
161 Bay Street (93021), Canada, Toronto,Toronto, Ontario,Staff Software Engineer
Added 1 day ago
ST
Backend Developer
Soroc Technology
Toronto, ON
- $45 to $50 CAD / hour
- Contract
We are seeking a highly skilled backend developer with strong experience in modern programming languages and frameworks. The ideal candidate will have:
Added 1 day ago
RT
Senior Java Software Engineer
Reveille Technologies,Inc
Vancouver, BC
- Full-time
Design, development, and implementation of Java-based microservices and backend solutions using SpringBoot and related frameworks.
Added 1 day ago
C
Principal Machine Learning Developer
Cisco
AB · Calgary, Alberta
- Full-time
As a Principal Machine Learning Engineer Developer you will define how AI, LLMs, and autonomous operations transform network and security management across Cisco’s wireless, wired, cloud,…
Added 1 day ago
SI
Application Developer with Java, React.JS, Python and Linux experience
Smart IT Frame LLC
Toronto, ON
- Contract
Role: Application Developer Software Engineer with experience in Java, React.JS, Python and Linux
Added 1 day ago
V
Application Security Engineer
VGS
Canada
- Full-time
As an Application Security Engineer, you will partner directly across Security and Engineering to build a friction-free, developer-centric security program. You will shape our Secure SDLC,…
Added 2 days ago
RI
Senior Backend Java Engineer - Risk Calculations
Rose International
Mississauga, ON
- Full-time
…enterprise software solutions. The role involves extensive Java development, microservices, cloud computing using AWS, and containerization technologies including OpenShift and Kubernetes.…
Added 2 days ago
SI
Java Software Engineer - Strong in Python, Reactjs and Linux experience
Smart IT Frame LLC
Toronto, ON
- Contract
Job Title: Java Software Engineer - Strong in Python, Reactjs and Linux experience
Added 2 days ago
SI
Application Developer Software Engineer
Smart IT Frame LLC
Toronto, ON
- Contract
Job Title: Application Developer Software Engineer
Added 2 days ago
SI
Java Software Engineer
Smart IT Frame LLC
Mississauga, ON
- Full-time
Seeking a Senior Java Developer with strong Solace PubSub+ expertise to design, build, and optimize high-throughput, low-latency event-driven microservices for enterprise trading platforms.
Added 4 days ago
MC
Senior QA Engineer III – Automation | Banking | API | Kafka | ETL (35729)
Myticas Consulting
Ottawa, ON
- Full-time
You are a hands-on senior QA automation engineer who can go beyond executing existing test scripts. You can design frameworks, understand complex backend integrations, trace data across…

Capgemini

Senior Core Java Engineer

Montreal, QC, Canada

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Job details

Experience: 7+ years of experience in software development with a strong focus on Java.
Posting language: English
Posted: Sep 14, 2026

Original job description

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world.

Job Description

We are seeking a Senior Core Java Engineer to design, develop, and support high-performance, scalable enterprise applications. The ideal candidate will have strong expertise in Core Java, distributed systems, backend engineering, and software design principles.

Key Responsibilities:
Design, develop, test, and maintain robust, scalable, and highly available Java-based applications.
Develop backend services, APIs, and microservices to support business-critical applications.
Participate in system architecture, technical design, and code reviews to ensure high-quality deliverables.
Optimize application performance, scalability, reliability, and security.
Troubleshoot production issues and implement sustainable solutions.
Collaborate with product owners, business stakeholders, architects, and development teams to deliver technical solutions aligned with business objectives.
Contribute to Agile development processes, including sprint planning, estimation, and retrospectives.
Advocate and implement software engineering best practices, coding standards, and development frameworks.
Mentor and guide junior developers, fostering technical growth and knowledge sharing.
Stay current with emerging technologies and recommend improvements to existing systems and processes.

Required Qualifications:
Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field.
7+ years of experience in software development with a strong focus on Java.
Strong expertise in Core Java, object-oriented programming, multithreading, collections, concurrency, and JVM internals.
Experience designing and developing enterprise-scale applications and distributed systems.
Strong understanding of software design patterns, data structures, and algorithms.
Experience building RESTful APIs and service-oriented architectures.
Strong knowledge of relational databases such as Oracle, SQL Server, PostgreSQL, or MySQL.
Experience with version control tools such as Git.
Familiarity with Linux/Unix environments and scripting.
Strong debugging, troubleshooting, and performance tuning skills.
Excellent communication, analytical, and problem-solving abilities.

Preferred Qualifications:
Experience with Spring Boot, Spring Framework, and microservices architecture.
Experience with messaging technologies such as Kafka, RabbitMQ, or JMS.
Familiarity with containerization technologies such as Docker and Kubernetes.
Exposure to cloud platforms including AWS, Azure, or Google Cloud Platform (GCP).
Experience with CI/CD pipelines and DevOps practices.
Knowledge of NoSQL databases such as MongoDB, Cassandra, or DynamoDB.
Experience working in highly regulated or large-scale enterprise environments.

Technical Skills:
Core Competencies:
Core Java (Java 8/11/17+)
Multithreading & Concurrency
Collections Framework
JVM Performance Tuning
Object-Oriented Design
Data Structures & Algorithms
Design Patterns

Backend Technologies:
Spring Boot
REST APIs
Microservices
Hibernate/JPA
Messaging Frameworks

Databases:
Oracle
SQL Server
PostgreSQL
MySQL
MongoDB (Preferred)

Tools & Platforms:
Git
Jenkins
Maven/Gradle
Docker
Kubernetes
Linux/Unix
AWS/Azure/GCP

Experience:
7+ years of professional software engineering experience
Proven experience building, deploying, and supporting large-scale enterprise applications.
Demonstrated success in delivering high-quality solutions in Agile environments.

The base compensation range for this role in the posted location is: 80,000 - 90,000.

Capgemini provides compensation range information in accordance with applicable national, state, provincial, and local pay transparency laws. The base compensation range listed for this position reflects the minimum and maximum target compensation Capgemini, in good faith, believes it may pay for the role at the time of this posting. This range may be subject to change as permitted by law.

The actual compensation offered to any candidate may fall outside of the posted range and will be determined based on multiple factors legally permitted in the applicable jurisdiction.

These may include, but are not limited to: Geographic location, Education and qualifications, Certifications and licenses, Relevant experience and skills, Seniority and performance, Market and business consideration, Internal pay equity.

It is not typical for candidates to be hired at or near the top of the posted compensation range.

In addition to base salary, this role may be eligible for additional compensation such as variable incentives, bonuses, or commissions, depending on the position and applicable laws.

Capgemini offers a comprehensive, non-negotiable benefits package to all regular, full-time employees. In the U.S. and Canada, available benefits are determined by local policy and eligibility and may include:

Paid time off based on employee grade (A-F), defined by policy: Vacation: 12-25 days, depending on grade, Company paid holidays, Personal Days, Sick Leave

Medical, dental, and vision coverage (or provincial healthcare coordination in Canada)
Retirement savings plans (e.g., 401(k) in the U.S., RRSP in Canada)
Life and disability insurance
Employee assistance programs
Other benefits as provided by local policy and eligibility

Important Notice: Compensation (including bonuses, commissions, or other forms of incentive pay) is not considered earned, vested, or payable until it becomes due under the terms of applicable plans or agreements and is subject to Capgemini’s discretion, consistent with applicable laws. The Company reserves the right to amend or withdraw compensation programs at any time, within the limits of applicable legislation.

Disclaimers

Capgemini is an Equal Opportunity Employer encouraging inclusion in the workplace. Capgemini also participates in the Partnership Accreditation in Indigenous Relations (PAIR) program which supports meaningful engagement with Indigenous communities across Canada by promoting fairness, accessibility, inclusion and respect. We value the rich cultural heritage and contributions of Indigenous Peoples and actively work to create a welcoming and respectful environment. All qualified applicants will receive consideration for employment without regard to race, national origin, gender identity/expression, age, religion, disability, sexual orientation, genetics, veteran status, marital status or any other characteristic protected by law.

This is a general description of the Duties, Responsibilities and Qualifications required for this position. Physical, mental, sensory or environmental demands may be referenced in an attempt to communicate the manner in which this position traditionally is performed. Whenever necessary to provide individuals with disabilities an equal employment opportunity, Capgemini will consider reasonable accommodations that might involve varying job requirements and/or changing the way this job is performed, provided that such accommodation does not pose an undue hardship. Capgemini is committed to providing reasonable accommodation during our recruitment process. If you need assistance or accommodation, please reach out to your recruiting contact.

Please be aware that Capgemini may capture your image (video or screenshot) during the interview process and that image may be used for verification, including during the hiring and onboarding process.

Click the following link for more information on your rights as an Applicant in the United States. http://www.capgemini.com/resources/equal-employment-opportunity-is-the-law

Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem.

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More about this job

Responsibilities

The Senior Core Java Engineer will design, develop, and maintain high-performance, scalable enterprise applications and backend services. They will also collaborate with cross-functional teams to implement technical solutions and mentor junior developers.

Requirements

Candidates must have a bachelor's degree in a relevant field and at least 7 years of professional software development experience with a focus on Java. Strong expertise in object-oriented programming, distributed systems, and database management is required.

Skills

Core Java
Multithreading
Concurrency
JVM internals
Distributed systems
Backend engineering
RESTful APIs
Microservices
Spring Boot
SQL
Git
Linux
Agile
Software design patterns
Performance tuning
Cloud platforms

Benefits

Paid time off
Company paid holidays
Personal days
Sick leave
Medical coverage
Dental coverage
Vision coverage
Retirement savings plans
Life insurance
Disability insurance
Employee assistance programs

Visa sponsorship

Not detected in the job text

Keywords

Core Java
Java 17
Multithreading
Concurrency
JVM
Spring Boot
Microservices
REST APIs
Hibernate
JPA
Oracle
PostgreSQL
MySQL
Git
Jenkins
Maven
Docker
Kubernetes
Linux
AWS
Azure
GCP
Agile
Software design patterns
Data structures
Algorithms
CI/CD
DevOps
NoSQL
Enterprise applications

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