ZipRecruiter

Log In

1

Contract Senior Java Developer Jobs in Ontario (NOW HIRING)

Citi

Senior Java Developer - Vice President

Mississauga, ON · On-site

CA$120K - CA$170K/yr

We are seeking a highly skilled and experienced Senior Java Engineer to join our dynamic team. The ideal candidate will be a hands-on developer with leadership quality, proficient in modern Java ...

New

Infoya

CA$80K - CA$100K/yr

We are looking for an experienced Java Developer to design, build, and maintain robust, scalable, and high-performance applications. This role focuses on developing modern e-commerce and enterprise ...

New

StackandCo

... n We need Senior Java Engineers who have led teams, to work on both the Architecture and Development on multiple key projects. \n \n \n \n \n \n This is ideal for someone who enjoys mentoring ...

StackandCo

... n * 5+ years' Java Development experience \n * Cloud experience \n * An interest in Machine ... An ambition to lead engineers would be nice to have \n * Solid Linux background \n \n \n \n \n \n

StackandCo

\n \n \n \n \n Our client has a requirement for a highly experienced Java Developer for a contract position in Dublin. You will be joining a highly collaborative team offering you the opportunity to ...

StackandCo

\n \n \n \n \n We are looking for an experienced Java Developer for a contract position. This will be an initial 6 month contract with the possibility of extending after that (remote interviewing and ...

StackandCo

\n \n \n \n \n We are looking for an experienced Java Developer for a contract position in Dublin. You will be joining a well established team of experienced developers, giving you the perfect ...

StackandCo

\n \n \n \n \n We have an exciting contract position available for a Full Stack Java Developer in Waterford. It will an initial 6 months with the strong possibility of extending after that. \n \n \n ...

StackandCo

... Java Development Experience \n * Agile & Test Driven experience \n * Microservices experience \n * AWS experience \n * Knowledge of web protocols and various operating systems \n \n \n \n \n \n Nice ...

StackandCo

... Contract ( extensions highly likely) \n \n \n \n \n \n What you will be doing ... You will work on a high performing team of Senior Full Stack Engineers where you will be building a ...

Td

Senior Java Developer, TD Securities

Toronto, ON

CA$102K - CA$125K/yr

Working knowledge of building Java services * 6+ years of experience as a software engineer working on large scale development projects * 2 to 3 years product manager experience * Strong ...

Td

Senior Java Developer, TD Securities

Toronto, ON · On-site

CA$125K - CA$156K/yr

Team Description The Counterparty Credit Risk group at TD Securities is seeking experienced Java Developers to build the next generation of risk computation platforms. The core mission of the ...

previous page

Showing results 41-60

All JobsContract Java Developer JobsContract Senior Java Developer JobsContract Senior Java Developer Jobs in Ontario

Contract Senior Java Developer information

What is a contract senior Java developer?

A Contract Senior Java Developer is an experienced software engineer who specializes in Java programming and works on a contract basis rather than as a permanent employee. They are typically responsible for designing, developing, and maintaining complex Java applications, often leading technical teams and ensuring code quality. Their contract status means they are hired for specific projects or time frames, providing flexibility to both the developer and the employer. Senior Java Developers usually have several years of experience and a deep understanding of Java frameworks, best practices, and software architecture.

What are some common challenges faced by contract senior Java developers when joining new projects?

Contract Senior Java Developers often encounter challenges such as quickly adapting to unfamiliar codebases, integrating with established development teams, and understanding unique business requirements. Since contracts are typically time-limited, there is pressure to deliver results efficiently while maintaining high code quality. Building rapport with permanent staff and navigating different development processes or toolchains are also common hurdles, but strong communication skills and adaptability can help overcome these challenges.

What are the key skills and qualifications needed to thrive as a contract senior Java developer, and why are they important?

To thrive as a Contract Senior Java Developer, you need advanced proficiency in Java programming, object-oriented design, and experience with frameworks like Spring or Hibernate, typically backed by a bachelor's degree in computer science or related field. Familiarity with version control systems (such as Git), CI/CD pipelines, and cloud platforms like AWS or Azure is often required, along with relevant Java certifications. Strong problem-solving, communication, and time management skills help you effectively collaborate with distributed teams and deliver quality code on tight deadlines. These skills and qualities are crucial for building robust applications, adapting to evolving project requirements, and excelling in fast-paced contract environments.

What is the difference between Contract Senior Java Developer vs Contract Java Developer?

AspectContract Senior Java DeveloperContract Java Developer
Required CredentialsJava certifications, experience in complex projectsJava certifications, basic to intermediate experience
Work EnvironmentLarge enterprise, complex systemsStartups, small to medium projects
Employer & Industry UsageFinancial, healthcare, tech firmsTech startups, software agencies
Search & Comparison IntentSeeking experienced Java roles, seniority levelEntry to mid-level Java roles

The main difference between a Contract Senior Java Developer and a Contract Java Developer lies in experience, project complexity, and industry usage. Senior developers typically handle complex systems and require advanced certifications, while Java Developers may work on simpler projects with less experience. Both roles are in demand across various industries, but the senior position emphasizes leadership and technical expertise.

What are the most commonly searched types of Senior Java Developer jobs in Ontario?

The most popular types of Senior Java Developer jobs in Ontario are:

What are popular job titles related to Contract Senior Java Developer jobs in Ontario?

For Contract Senior Java Developer jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Contract Senior Java Developer jobs in Ontario look for?

The top searched job categories for Contract Senior Java Developer jobs in Ontario are:

What cities in Ontario are hiring for Contract Senior Java Developer jobs?

Cities in Ontario with the most Contract Senior Java Developer job openings:

Contract Senior Java Developer jobs near you
Infographic showing various Contract Senior Java Developer job openings in Ontario as of August 2026, with employment types broken down into 75% Full Time, 12% Part Time, and 13% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution.

Senior Java Developer - Vice President

Citi

Mississauga, ON • On-site

CA$120K - CA$170K/yr

Full-time

Posted yesterday

New

Citibank rating

8.3

Company rating: 8.3 out of 10

Based on 177 frontline employees who took The Breakroom Quiz

39th of 171 rated banks

Job description

We are seeking a highly skilled and experienced Senior Java Engineer to join our dynamic team. The ideal candidate will be a hands-on developer with leadership quality, proficient in modern Java technologies and SQL skills, and passionate about leveraging cutting-edge AI tools and methodologies to build innovative and robust enterprise solutions.

Responsibilities :

  • Write clean, secure, and highly performant Java code using Spring Boot and related frameworks, adhering to best practices and coding standards.
  • Build modern, responsive front-end interfaces with a focus on user experience and robust, scalable RESTful APIs.
  • Lead architectural decisions, perform comprehensive code reviews, and mentor junior and mid-level developers, fostering a culture of technical excellence.
  • Collaborate closely with product managers and UI/UX designers to translate complex requirements into elegant and efficient technical solutions.
  • Champion continuous integration/continuous deployment (CI/CD) practices and oversee automated cloud deployments on platforms like AWS/GCP.
  • Actively utilize AI-powered development tools such as GitHub Copilot, Devin, Claude Code, and Cursor to accelerate development, improve code quality, and assist in debugging and refactoring efforts.
  • Contribute to the design and implementation of AI/ML integration patterns within applications, understanding the lifecycle of LLM-powered features.
  • Explore and integrate new AI technologies and frameworks to enhance application capabilities and developer productivity.

Skills

  • Backend: Advanced proficiency in Core Java, Spring Boot, microservices architecture, and asynchronous programming. Experience with performance tuning and optimization.
  • Databases: Extensive experience with relational (SQL Server, PostgreSQL, Oracle) and non-relational (MongoDB, Cassandra) databases, including schema design, query optimization, and data migration strategies.
  • Frontend: Experience in developing application using JavaScript (ES6+), TypeScript, and modern frameworks (e.g., React or Angular) will be plus.
  • DevOps & Cloud: Experience working with Docker, Kubernetes, and experience with cloud platforms (e.g., AWS, Azure, GCP, OpenShift).
  • Version Control: Expert-level knowledge of Github and branching strategies.
  • AI/ML & Tooling:
    • Demonstrated experience with AI-powered development tools (e.g., GitHub Copilot, Devin, Claude Code, Cursor) for code generation, debugging, and refactoring.
    • Fundamental understanding of Large Language Models (LLMs) and their application in software development is a plus.
    • Proficiency in Python for scripting, data processing, and integration with AI/ML frameworks will be a huge plus.
  • Soft Skills: Exceptional problem-solving abilities, strong communication, technical leadership, mentorship, and a proactive approach to continuous learning and innovation.

Experience

  • 6+ years of professional software engineering experience, with at least 3 years focused on modern full-stack development.
  • Proven track record of successfully designing, deploying, and maintaining high-scale, customer-facing applications in production environments.
  • Experience taking ownership of key project areas, driving technical initiatives, and leading cross-functional teams.
  • Prior experience integrating or working with AI/ML components or services is highly desirable.

Education

  • Bachelor’s or Master’s degree in Computer Science, Software Engineering, or an equivalent technical field.

------------------------------------------------------

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.

What Citibank employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom

Citigroup Inc logo

About Citigroup Inc

Sourced by ZipRecruiter

We live in an increasingly complex world. Companies these days are either born global or are going global at record speed. Business and geopolitics are forging an entirely new dynamic and consumers now expect financial services to be a seamless part of their digital lives. Citi is a bank that’s uniquely positioned for this moment. Through our vast global network and our on-the-ground expertise, we can connect the dots, anticipate change and empathize the needs of our clients and customers in ways that other banks simply cannot. Citi's mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. We have set expectations for how we must act to bring our mission to life. These expectations are at the heart of our Leadership Principles – we take ownership, we deliver with pride and we succeed together.

Industry

Banking and credit intermediation

Company size

5,001 - 10,000 Employees

Headquarters location

New York City, NY, US

View All Citigroup Inc Jobs

Apply