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Added 7 hours ago
E
Full Stack Engineer
E-IT
Toronto, ON
- Contract
Backend: 6+ years of strong experience in Java (Java 11/17/21), Spring Framework, Spring Boot, Spring Security, and Spring Data JPA/Hibernate.
Added 8 hours ago
P
Java Fullstack Developer
Prolifics
Montreal, QC
- Contract
We are looking for an experienced Java Full Stack Developer to join our team in Montreal. The ideal candidate will have strong hands-on experience developing enterprise applications using…
Added 8 hours ago
FI
Full Stack Engineer
Flexton Inc.
Toronto, ON
- Contract
We are looking for a skilled Software Engineer with strong experience in Java, Spring MVC, JavaScript, React.js and modern web application development. The ideal candidate should have a…
Added 8 hours ago
2I
Senior Software Developer Back End
2iSolutions Inc.
Toronto, ON
- Contract
Our Toronto-based client is hiring a Software Developer – Back End – Senior for a 9-month onsite contract opportunity in Toronto, ON. This role requires 5 days onsite at 222 Jarvis Street.
Added 8 hours ago
M
Sr. Full Stack Liferay Developer
McKesson
Mississauga, ON
- Full-time
We are seeking a Sr. Full Stack Liferay Developer to design, develop, and support secure, scalable, and high-performing customer portal solutions. This is an excellent opportunity for a…
Added 11 hours ago
SI
Full Stack Engineer
Stelvio Inc.
Saskatoon, SK
- Full-time
We are Looking for a Intermediate Full stack Developer to join an established technology team.
Added 12 hours ago
M
Senior TypeScript Engineer
MapsPeople
Richmond Hill, ON
- Full-time
…modern TypeScript-first stack, complemented by high-performance backend services in…
Added 17 hours ago
SG
Software Engineer – Full-Stack (React, TypeScript, Java)
S&P Global
Toronto, ON
- Full-time
Build scalable, performant UIs using React and TypeScript, and deliver backend services and REST APIs in Node.js and Java, contributing to a platform that powers financial risk decisions…
Added 21 hours ago
SG
Software Engineer – Full-Stack (React, TypeScript, Java)
S&P Global
Toronto, ON
- Full-time
Build scalable, performant UIs using React and TypeScript, and deliver backend services and REST APIs in Node.js and Java, contributing to a platform that powers financial risk decisions…
Added 1 day ago
O
Senior Software Developer, DevOps & Infrastructure
OSEDEA
Montreal, QC
- Full-time
As a Senior Software Developer with strong Cloud, DevOps, and infrastructure experience, you design, build, and deliver robust software solutions, architectures, and infrastructure for our…
Added 1 day ago
AS
Full Stack Developer
AgileGrid Solutions
Canada
- Full-time
As a Full Stack Developer, you will build and maintain web applications using React.js, Node.js, and Java. You will participate throughout the development lifecycle, from implementing…
Added 1 day ago
TA
Senior Software Engineer
Treasure AI
Vancouver, BC
- $132,500 to $171,000 CAD / year
- Full-time
Strong backend proficiency (experience with Ruby, Go, Java, or Kotlin is preferred), including a solid understanding of database design and API scalability.
Added 2 days ago
TI
Java Backend Developer with Python
Tekgence Inc
Mississauga, ON
- Full-time
Java and Python We are seeking a skilled Backend Developer with 9 to 10 must years of experience in designing, developing, and maintaining scalable backend applications. The ideal candidate…
Added 2 days ago
TI
Java Backend developer with Python
Tekgence Inc
Mississauga, ON
- Full-time
Java and Python We are seeking a skilled Backend Developer with 7 to 10 years only of experience in designing, developing, and maintaining scalable backend applications. The ideal candidate…
Added 2 days ago
HT
Java Spark Backend Developer
Hirematic Talent Solutions
Montreal, QC
- $50 to $55 CAD / hour
- Contract
We are seeking a highly skilled and experienced Senior Java Backend Developer to join our core engineering team. In this role, you will be responsible for designing, building, and…
Added 2 days ago
C
Senior Mobile Solutions Lead
Cognizant
Toronto, ON
- $60,000 to $95,000 CAD / year
- Full-time
…Solutions Lead to drive the design and development of mobile and backend solutions supporting the Life & Annuities Insurance domain. This role will focus on delivering scalable REST API…
Added 2 days ago
AS
Full Stack Designer /Developer
Apex Systems
Toronto, ON
- $55 to $80 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 2 days ago
LI
Software Developer - Back End
Lotus IT Solutions
Toronto, ON
- Contract
…Delivery and Procurement) is seeking a Senior Back End Software Developer for an onsite engagement in Toronto. The successful candidate will be responsible for designing, developing, and…
Added 2 days ago
OT
Sr. IT Software Developer
Open Text Corporation
Waterloo, ON
- Other
As a Sr. IT Software Developer (Digital Fullstack), you will independently deliver full-stack and platform capabilities for OpenText's digital experience ecosystem. You will work across…
Added 2 days ago
MC
Senior QA Engineer III – Automation | Banking | API | Kafka | ETL (35729)
Myticas Consulting
Ottawa, ON
- Full-time
Automate API workflows, backend validations, and data-processing scenarios using Java or Python.
Added 2 days ago
C
Full Stack Developer
CGI
Vancouver, BC
- Full-time
CGI is seeking a Full Stack Developer to design, develop, test, integrate, and support modern enterprise applications.
Added 3 days ago
D
Senior Full Stack Developer (Java And React/Angular) - Operate (Future Opportunity)
Deloitte
Toronto, ON
- Full-time
We are passively seeking Full Stack Java Developers to join our team on a 1-year fixed term. As a Full Stack Java Developer at Deloitte, you will play a crucial role in designing,…
Added 3 days ago
D
Senior Java Backend Developer - Operate (Future Opportunity)
Deloitte
Toronto, ON
- Full-time
We are passively seeking Senior Java Developers to join our team on a 1-year fixed term. As a Java Developer at Deloitte, you will play a crucial role in designing, developing, and…
Added 3 days ago
BV
Data Engineer (Sports & Prediction Markets)
Betstamp Ventures
Toronto, ON
- Internship
Strong fundamentals in a backend language such as Go, Java, C#, Rust, C++, Kotlin, or server-side TypeScript
Added 3 days ago
RI
Senior Full Stack Java Developer - Capital Markets
Rose International
Mississauga, ON
- Full-time
The role requires an experienced Full-Stack or Backend Architect who can translate complex and ambiguous business requirements into working software, make effective tradeoffs between scope,…

Lotus IT Solutions

Software Developer - Back End

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 29, 2026
Posting language: English
Posted: Oct 30, 2026

Original job description

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Ref: RQ11429 Contract – 9 Months (Extension Possible) Onsite – Toronto (222 Jarvis Street)

Posted Date: 2026-10-30

Location: Onsite – Toronto (222 Jarvis Street)

Public Sector Experience: Required – OPS / Public Sector

Contract End Date: 2027-05-31 *

Rate: $99/hour

Overview

The Government Services Integration Cluster (Ministry of Public and Business Service Delivery and Procurement) is seeking a Senior Back End Software Developer for an onsite engagement in Toronto. The successful candidate will be responsible for designing, developing, and maintaining server-side logic and database architecture for large-scale, multi-client web applications. This role operates within an Agile delivery environment and requires close collaboration with front-end developers, architects, and cross-functional project teams.

Key Responsibilities

Design and develop robust server-side logic, central database definitions, and ensure high performance and responsiveness to front-end requests
Translate technical systems specifications into working, tested, and well-documented applications
Develop detailed programming specifications and write or generate production-quality code
Build and maintain RESTful APIs and RESTful Web Services to support front-end and third-party integrations
Integrate front-end elements into server-side applications and support full-stack collaboration
Apply microservice architecture principles to enhance product extensibility, maintainability, and scalability
Work with relational and hierarchical databases (Oracle, SQL) including data retrieval using query languages
Implement and enforce security protocols including JWT, OAuth 2.0, and SSL Certificates
Conduct unit testing, compile data-driven programs, and perform debugging and troubleshooting of technical issues
Participate in design walkthrough sessions and contribute to code reviews with the project team
Support post-implementation activities and resolve technical issues as they arise
Follow OPS development standards and contribute to Agile ceremonies and sprint delivery

Must-Have Requirements

10+ years of experience as a designer and developer on large-scale, multi-client web applications
10+ years of hands-on Java development experience with Oracle or SQL databases
5+ years of hands-on experience with REST APIs and RESTful Web Services
Extensive experience in modern web framework technology stack: React, JavaScript, Next.js, Node.js, CSS, and RESTful APIs
Extensive experience with responsive web development and HTML5
Extensive experience coding for mobile devices
10+ years of experience developing applications in compliance with PCI and WCAG 2.2 standards and achieving AODA compliancy
Experience with JAWS, WAI-ARIA, and HTML5 for accessible application development
Knowledge and experience with microservice architecture and core architecture principles
Experience using Azure DevOps for source control, CI/CD, and project management
Knowledge of security gateways and protocols including JWT, OAuth 2.0, and SSL Certificates
Strong understanding of Agile methodologies and object-oriented coding practices including design patterns, refactoring, and clean code principles

Nice-to-Have Skills

Previous experience developing and supporting Driver, Vehicle, Healthy Smiles Ontario, and High Occupancy Lanes services within the ServiceOntario web portal
Experience with Canada Post Address module and Government Payment Gateway integrations
Knowledge of rapid application development (RAD) methodologies
Experience with middleware and gateways
Familiarity with OPS development standards and processes
Prior Ontario Public Sector or broader public sector development experience

Work Environment

This is a fully onsite role based in Toronto at 222 Jarvis Street, five days per week. No security clearance is required. The team follows Agile methodologies and the consultant will work closely with both functional and technical team members throughout the software development life cycle.

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Final role details, responsibilities, and terms will be confirmed with shortlisted candidates. Compensation may vary based on experience. Errors and omissions excepted.

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More about this job

Responsibilities

Design, develop, and maintain server-side logic, database architecture, and RESTful services for large-scale web applications, ensuring performance, security, and accessibility. Collaborate with front-end developers and cross-functional teams in an Agile environment, while testing, debugging, reviewing code, and supporting post-implementation activities.

Requirements

Requires 10+ years of experience developing large-scale web applications and Java applications with Oracle or SQL, plus at least five years working with REST APIs and web services. Candidates must also have extensive experience with modern web technologies, responsive and mobile development, PCI and WCAG 2.2 compliance, accessibility tools, microservices, Azure DevOps, security protocols, and Agile practices.

Skills

Java
Oracle
SQL
REST APIs
React
JavaScript
Next.js
Node.js
CSS
HTML5
Responsive Web Development
Mobile Development
Microservices
Azure DevOps
Web Accessibility
Agile Methodologies

Visa sponsorship

Not detected in the job text

Keywords

Java
Oracle
SQL
REST APIs
RESTful Web Services
React
JavaScript
Next.js
Node.js
CSS
HTML5
Responsive Web Development
Mobile Development
Microservice Architecture
Azure DevOps
CI/CD
PCI Compliance
WCAG 2.2
AODA
JAWS
WAI-ARIA
JWT
OAuth 2.0
SSL Certificates
Agile
Object-Oriented Programming
Design Patterns
Refactoring
Middleware
Government Payment Gateway

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