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Added 2 days ago
M
Senior Java Full Stack Developer
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Full Stack Developer to design, build and maintain both front-end interfaces and back-end systems, including APIs, microservices, databases and cloud…
Added 2 days ago
M
Senior Java Full Stack Developer
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Full Stack Developer to design, build and maintain both front-end interfaces and back-end systems, including APIs, microservices, databases and cloud…
Added 2 days ago
M
Senior Java Full Stack Developer
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Full Stack Developer to design, build and maintain both front-end interfaces and back-end systems, including APIs, microservices, databases and cloud…
Added 2 days ago
M
Senior Java Full Stack Developer
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Full Stack Developer to design, build and maintain both front-end interfaces and back-end systems, including APIs, microservices, databases and cloud…
Added 2 days ago
I-
Senior Full Stack Developer
I8IS - Infiniti Software Solutions
Toronto, ON
- Full-time
We are seeking an experienced Senior Software Developer – Full Stack to design, develop, integrate, test, deploy, and maintain enterprise-level applications for government programs. The…
Added 2 days ago
M
Senior Java Full Stack Developer
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Full Stack Developer to design, build and maintain both front-end interfaces and back-end systems, including APIs, microservices, databases and cloud…
Added 2 days ago
M
Senior Java Full Stack Developer
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Full Stack Developer to design, build and maintain both front-end interfaces and back-end systems, including APIs, microservices, databases and cloud…
Added 2 days ago
D
Business Technical Analyst
Deloitte
Toronto, ON
- Full-time
We're growing our Product Engineering & Development team and seeking an experienced Junior Developer who can contribute to both delivery and pre-sales activities. Depending on your…
Added 2 days ago
M
Senior Java Developer (with LLM expertise)
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Java Developer with LLM expertise to lead the technical design, development and integration of core banking application systems for a major financial services…
Added 2 days ago
M
Senior Java Developer (with LLM expertise)
Miratech
Toronto, ON
- Full-time
We are looking for a Senior Java Developer with LLM expertise to lead the technical design, development and integration of core banking application systems for a major financial services…
Added 3 days ago
LI
Senior Software Developer - Full Stack
Lotus IT Solutions
Toronto, ON
- Contract
…and Business Service Delivery and Procurement) is seeking a Senior Software Developer – Full Stack to design, develop, integrate, test, deploy, and maintain enterprise platform capabilities…
Added 3 days ago
MI
Senior Software Developer (Healthcare)
Maarut Inc
Toronto, ON
- Contract
Senior-level hands-on experience developing Java and Spring Boot services and REST APIs, including use of the HAPI FHIR library to process FHIR R4 and DSTU2 resources.
Added 3 days ago
P
Software Engineer
ProxyLink
Toronto, ON
- Contract
ProxyLink is hiring an experienced Senior Java Developer / Technical Lead to design, develop, integrate, test, deploy, and maintain complex enterprise applications and cloud-based software…
Added 3 days ago
RB
Senior Full Stack Developer
Royal Bank of Canada
Burlington, ON
- Full-time
…revolutionizing payment solution for businesses. We're seeking a talented Senior Full Stack Developer to help design, develop, and maintain our secure and high-performing digital platform.…
Added 3 days ago
J
Senior Software Developer / Full Stack Technical Lead
Joblinxsapp
Toronto, ON
- Full-time
Job Title: Senior Software Developer / Full Stack Technical Lead
Added 3 days ago
J
Senior Full Stack Software Developer – Java / Angular
Joblinxsapp
Toronto, ON
- Full-time
The Government of Ontario is seeking an experienced Senior Full Stack Software Developer to support application development, data analysis, database design, and technical implementation…
Added 3 days ago
RT
Senior Full Stack Software Developer
Russell Tobin
Toronto, ON
- $70 to $80 CAD / hour
- Contract
The Agency requires a Senior Full stack Developer contract resource to support the Ontario Clinical Report Exchange (OCRE) project. The resource will help design and build a Java Spring…
Added 3 days ago
R
Senior Full Stack Developer
RBC
Burlington, ON
- Full-time
…revolutionizing payment solution for businesses. We're seeking a talented Senior Full Stack Developer to help design, develop, and maintain our secure and high-performing digital platform.…
Added 3 days ago
IC
AppOps, Senior Specalist
Interac Corp.
Toronto, ON · Interac Corp. Head Office
- Full-time
Advanced troubleshooting and debugging experience across the Java technology stack, including API- and network-level investigation.
Added 3 days ago
L
Senior Back-End Engineer
LotusFlare
Toronto, ON
- Full-time
At LotusFlare, Senior Backend Engineers are replacing traditional business back ends with an engagement-centric, dynamic product stack. You’ll develop, secure and scale the back-end…
Added 3 days ago
SL
Senior Software Engineer, Operations – Core Java & iOS focus
Sun Life
Toronto, ON · Waterloo, ON · Sun Life Waterloo King
- Full-time
We are looking for a Senior Software Engineer with strong full-stack Java experience and hands-on iOS development skills. You will develop and support reliable applications across the web,…
Added 3 days ago
M
RQ11737 - Software Developer - Full Stack - Senior
Maarut
Toronto, ON
- Contract
ministry partners, the Senior Software Developer – Full Stack converts approved
Added 3 days ago
IG
Full Stack Java Developer/Designer
Insight Global
Toronto, ON
- $50 to $70 CAD / hour
- Contract
Insight Global is looking for a Senior Full-Stack Solution Designer to lead the design and delivery of enterprise applications across both front-end and back-end environments. This person…
Added 3 days ago
M
RQ00811 - Software Developer - Full Stack - Senior
Maarut
Toronto, ON
- Contract
Senior-level hands-on experience developing Java and Spring Boot services and REST APIs, including use of the HAPI FHIR library to process FHIR R4 and DSTU2 resources.
Added 3 days ago
TI
Senior Full Stack Java Developer
Themesoft Inc.
Toronto, ON
- Contract
Develop microservices using Java, Spring Boot, Spring MVC, Spring Data JPA, Hibernate, Angular/ReactJS.

I8IS - Infiniti Software Solutions

Senior Full Stack Developer

Toronto, ON, Canada

Full-time

Apply About employer

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Job details

Job type: Full-time
Apply by: Nov 21, 2026
Experience: 10+ years of experience designing and developing large-scale, multi-client web applications or equivalent senior-level development experience.
Posting language: English
Posted: Oct 22, 2026

Original job description

Senior Full Stack Developer

Location: Toronto, ON
Work Arrangement: Onsite – 5 days per week
Contract Duration: November 9, 2026 – September 28, 2027
Contract Type: Contract

About the Role

We are seeking an experienced Senior Software Developer – Full Stack to design, develop, integrate, test, deploy, and maintain enterprise-level applications for government programs. The successful candidate will build secure, scalable, and maintainable platform services across frontend, backend, API, workflow, integration, and data-access layers.

This role involves developing Java-based microservices, REST APIs, database components, and enterprise integrations while collaborating with architects, business analysts, UX designers, QA specialists, DevOps engineers, security teams, and other stakeholders. The developer will also provide technical leadership, conduct code reviews, troubleshoot issues, and support production deployments and ongoing application enhancements.

Key Responsibilities

Design, develop, test, deploy, and maintain secure and scalable enterprise applications.
Build and maintain Java-based microservices, REST APIs, RESTful web services, and reusable platform services.
Develop frontend, backend, workflow, middleware, integration, and data-access components.
Translate technical specifications and business requirements into working, tested applications.
Design and maintain database objects, SQL queries, data transformations, conversion routines, and integration components.
Implement security protocols and gateways, including JWT, OAuth 2.0, SSL certificates, identity integration, and secure communications.
Develop and maintain automated unit, integration, API, database, and user-interface tests.
Participate in design walkthroughs, code reviews, impact assessments, estimation, sprint planning, and release planning.
Review, modify, test, and troubleshoot build, configuration, installation, and deployment scripts.
Resolve technical issues related to development, implementation, migration, deployment, and production operations.
Collaborate with cross-functional business and technical teams throughout the software development lifecycle.
Provide post-implementation support and improve application performance, reliability, extensibility, and maintainability.
Prepare and maintain technical, system, deployment, user, and support documentation.
Provide technical guidance, mentoring, and quality oversight while meeting project deadlines.

Must-Have Skills and Qualifications

10+ years of experience designing and developing large-scale, multi-client web applications or equivalent senior-level development experience.
Extensive hands-on Java development experience with Oracle, SQL, or comparable relational database technologies.
Strong experience designing and developing REST APIs and RESTful web services.
Experience with microservice architecture and Internet-ready applications.
Experience with security gateways and protocols, including JWT, OAuth 2.0, SSL certificates, secure communications, and identity integration.
Strong knowledge of relational and hierarchical databases, query languages, SQL tuning, middleware, gateways, and communications protocols.
Experience with data conversion, migration, and enterprise integration activities.
Strong understanding of object-oriented programming, design patterns, refactoring, clean code, and structured development methodologies.
Experience with Agile delivery approaches, automated testing, and Azure DevOps or comparable tools.
Experience with application deployment, troubleshooting, technical documentation, and post-implementation support.

Technical Skills and Experience

Java development and enterprise application architecture
REST APIs and RESTful web services
Microservices and reusable platform services
Oracle, SQL, and relational or hierarchical databases
SQL tuning and data-access components
JWT, OAuth 2.0, SSL certificates, and identity integration
Middleware, gateways, and enterprise integrations
Azure DevOps, source control, build, testing, and deployment pipelines
Automated testing, debugging, and production support
Agile methodologies and software development lifecycle practices

Soft Skills

Strong written and verbal communication skills.
Excellent analytical, problem-solving, and decision-making abilities.
Ability to communicate technical concepts and present ideas effectively.
Strong collaboration and interpersonal skills.
Ability to work under pressure, adapt to changing priorities, and meet aggressive deadlines.
Experience participating in technical discussions, design reviews, and cross-functional collaboration.

Nice to Have

Experience working with the Ontario Public Service (OPS) or other public-sector organizations.
Knowledge of public-sector development standards, governance, security, accessibility, information management, and documentation requirements.

How to Apply

Interested candidates can send their resumes to itjobs@i8is.com or contact me directly.

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More about this job

Responsibilities

Design, develop, test, deploy, and maintain secure enterprise applications, including Java microservices, REST APIs, frontend and backend components, database objects, and integrations. Provide technical leadership and production support while collaborating with cross-functional teams on reviews, testing, deployments, documentation, and ongoing application improvements.

Requirements

Requires 10+ years of experience developing large-scale web applications, extensive Java and relational database experience, and strong skills in REST APIs, microservices, security protocols, and enterprise integration. Candidates should also have experience with Agile delivery, automated testing, Azure DevOps or comparable tools, deployment, troubleshooting, and technical documentation.

Skills

Java
REST APIs
Microservices
Oracle
SQL
Relational Databases
JWT
OAuth 2.0
SSL Certificates
Identity Integration
Enterprise Integration
Azure DevOps
Automated Testing
Agile Methodologies
Application Deployment
Production Support

Visa sponsorship

Not detected in the job text

Keywords

Java
Full-Stack Development
Enterprise Applications
Microservices
REST APIs
RESTful Web Services
Oracle
SQL
Relational Databases
Hierarchical Databases
SQL Tuning
JWT
OAuth 2.0
SSL Certificates
Identity Integration
Middleware
Enterprise Integration
Azure DevOps
Source Control
Build Pipelines
Deployment Pipelines
Automated Testing
Agile
Object-Oriented Programming
Design Patterns
Data Migration
Production Support
Government Programs
Technical Documentation
Application Security

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