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Fullstack Developer Java Jobs in Ontario (NOW HIRING)

Use object\-oriented analysis and design (Java) skills to create dynamic user facing pages\n \n ... n \n \n \n Fullstack Skills \/ Knowledge \/ Abilities\n \n Backend \n \n \n * Fluency or ...

... a fullstack developer * 2+ years working as a team lead * Experience in typescript/node or java/spring boot on backend, typescript/react/angular on frontend. * Strong experience building and ...

... Java. * Strong communication and collaboration skills. You are comfortable working closely with ... engineers, designers, product managers, and distributed teams, and can influence technical ...

Use object\-oriented analysis and design (Java) skills to create dynamic user facing pages\n \n ... n \n \n \n Fullstack Skills \/ Knowledge \/ Abilities\n \n Backend \n \n \n * Fluency or ...

Qualifications * 8+ years of overall fullstack experience - we use Node/React and Java * BS/MS in ... team operating in a DevOps model. * Expertise in service design, discovery, and runtime ...

As a Senior Full-Stack Engineer , you will have a hand in architecting the technology and customer ... Rich development experience with Java / Spring Boot, React, ECMAScript standard and SQL (MySQL)

AI Engineer

Ottawa, ON

CA$77K - CA$117K/yr

Collaborate closely with AI Architects, AI Studio Leads, ML Engineers, Data Scientists, FullStack ... Expertlevel proficiency in Python, with working familiarity in Java and/or TypeScript for ...

AI Engineer

Oakville, ON

CA$77K - CA$117K/yr

Collaborate closely with AI Architects, AI Studio Leads, ML Engineers, Data Scientists, FullStack ... Expertlevel proficiency in Python, with working familiarity in Java and/or TypeScript for ...

AI Engineer

London, ON

CA$77K - CA$117K/yr

Collaborate closely with AI Architects, AI Studio Leads, ML Engineers, Data Scientists, FullStack ... Expertlevel proficiency in Python, with working familiarity in Java and/or TypeScript for ...

AI Engineer

Toronto, ON

CA$77K - CA$117K/yr

Collaborate closely with AI Architects, AI Studio Leads, ML Engineers, Data Scientists, FullStack ... Expertlevel proficiency in Python, with working familiarity in Java and/or TypeScript for ...

AI Engineer

Markham, ON

CA$77K - CA$117K/yr

Collaborate closely with AI Architects, AI Studio Leads, ML Engineers, Data Scientists, FullStack ... Expertlevel proficiency in Python, with working familiarity in Java and/or TypeScript for ...

Use Java, Node.js, Angular, REST APIs, SQL, and related technologies to build and support ... Work collaboratively with engineers, quality specialists, analysts, architects, infrastructure ...

Showing results 21-40

Fullstack Developer Java information

What are the roles and responsibilities of a fullstack developer Java?

A Fullstack Developer Java is responsible for designing, developing, and maintaining both the front-end and back-end components of web applications using Java and related technologies. Their duties include building user interfaces, developing server-side logic, integrating APIs, and managing databases. They often work with frameworks such as Spring Boot for back-end development and may use JavaScript frameworks like React or Angular for the front-end. Fullstack Java developers also ensure the application is secure, scalable, and meets client requirements. Collaboration with other team members, such as UI/UX designers and testers, is a key part of the role.

How does a fullstack developer Java balance front-end and back-end responsibilities within a team?

Fullstack Developer Java roles often require a flexible approach, as you may shift between front-end tasks like building user interfaces (using frameworks such as React or Angular) and back-end development (using Java, Spring Boot, etc.) based on project needs. Collaboration with UI/UX designers, DevOps engineers, and backend specialists is common, especially in agile environments where responsibilities can change sprint-to-sprint. It's important to communicate openly with team members to ensure seamless integration and to manage workload effectively. Being comfortable with both client-side and server-side technologies allows you to contribute across the stack and increases your value within the team.

What are the key skills and qualifications needed to thrive as a fullstack developer Java?

To thrive as a Fullstack Developer Java, you need strong proficiency in Java, JavaScript, HTML, CSS, and a solid understanding of both backend and frontend frameworks, typically supported by a degree in computer science or related field. Familiarity with tools like Spring Boot, React or Angular, REST APIs, version control systems like Git, and experience with databases such as MySQL or MongoDB are commonly required. Excellent problem-solving, teamwork, and communication skills help developers collaborate effectively and deliver robust solutions. These competencies ensure seamless end-to-end development, allowing for the creation of scalable, maintainable, and user-friendly web applications.

What is the difference between Fullstack Developer Java vs Backend Developer Java?

AspectFullstack Developer JavaBackend Developer Java
Primary FocusDeveloping both frontend and backend componentsDeveloping server-side logic and database integration
Required SkillsJava, HTML, CSS, JavaScript, frameworks like React or AngularJava, Spring, Hibernate, database management
Work EnvironmentCollaborates on full application stack, often in agile teamsFocuses on backend systems, APIs, and server-side architecture
CertificationsJava certifications, fullstack development coursesJava certifications, backend-specific courses

Fullstack Developer Java and Backend Developer Java share core Java skills and often work within similar industries. However, fullstack developers handle both frontend and backend tasks, while backend developers focus solely on server-side logic. Your choice depends on whether you prefer working across the entire application or specializing in backend systems.

What cities in Ontario are hiring for Fullstack Developer Java jobs?

Cities in Ontario with the most Fullstack Developer Java job openings:

Infographic showing various Fullstack Developer Java job openings in Ontario as of August 2026, with employment types broken down into 72% Full Time, 14% Part Time, and 14% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution.

Senior Lead Java Fullstack Software Engineer

Mississauga, ON • On-site

Citi
Banking and Credit Intermediation • 5 - 10K employees

CA$145K - CA$217K/yr

Full-time

Posted 21 days ago


Citibank rating

8.4

Company rating: 8.4 out of 10

Based on 179 frontline employees who took The Breakroom Quiz


Job description

The Applications Development Technology Senior 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: Lead integration of functions to meet goals, deploy new products, and enhance processes Analyze complex business processes, system processes, and industry standards to define and develop solutions to high level problems Provide expertise in area of advanced knowledge of applications programming and plan assignments involving large budgets, cross functional project, or multiple projects Develop application methodologies and standards for program analysis, design, coding, testing, debugging, and implementation Utilize advanced knowledge of supported main system flows and comprehensive knowledge of multiple areas to achieve technology goals Consult with end users to identify system function specifications and incorporate into overall system design Allocate work, and act as an advisor/coach developers, analysts, and new team members Influence and negotiate with senior leaders and communicate with external parties 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.

Required Skills & Qualifications 10+ years of experience in full-stack web application development. Strong backend development experience with Java and Spring Boot (REST APIs, security concepts, performance, and scalability). Strong front-end development experience with Angular including TypeScript, HTML5, and CSS.

Experience using UI component libraries such as Kendo UI. Working knowledge of micro front-end architecture and patterns. Solid understanding of API design and microservices (service boundaries, resilience, observability basics).

Hands-on experience with SQL Server and relational data modeling. Experience with Elasticsearch and event streaming with Kafka. Proficiency with GitHub / Bitbucket workflows and practical experience with CI/CD pipelines.

Strong communication skills, ownership mindset, and ability to work collaboratively in an agile team. Preferred / Nice to Have Experience with cloud platforms (AWS, Azure, or GCP). Containerization and orchestration experience (Docker, Kubernetes/OpenShift).

Experience with automated testing frameworks (unit, integration, and UI testing). Exposure to observability practices (logging, metrics, tracing) and production support Education: Bachelor's degree/University degree or equivalent experience Master's degree preferred ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Primary Location Full Time Salary Range: $145,100.00 - $217,700.00 ------------------------------------------------------ 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