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Added 1 hour ago
E
Intermediate Structural Designer/Engineer
EXP
Markham, ON
- Full-time
Work with other senior and/or junior engineers collaboratively
Added 14 hours ago
IS
Network Designer - Senior
Innova Solutions
Toronto, ON
- $600 to $620 CAD / day
- Full-time
A client of Innova Solutions is immediately hiring for a Network Designer - Senior
Added 21 hours ago
TS
Interior Designer
TalentSphere Staffing Solutions
AB · Edmonton, AB
- Full-time
Other Titles: Designer / Intermediate Designer / Interior Designer / Junior Interior Designer / Senior Designer
Added 21 hours ago
TS
Interior Designer
TalentSphere Staffing Solutions
Calgary, AB
- Full-time
Other Titles: Designer / Intermediate Designer / Interior Designer / Junior Interior Designer / Senior Designer
Added 23 hours ago
A
Senior Product Manager
Aviso
Toronto, ON
- $120,000 to $135,000 CAD / year
- Full-time
We are looking to fill an opening for a Senior Product Manager to join Aviso's Product Management team and help shape the future of investing for Canadians through a best-in-class wealth…
Added 1 day ago
QC
Enterprise Account Executive
Quiet Cabins
Toronto, ON
- Part-time
A track record of opening doors with senior buyers such as Directors of Workplace, Facilities or Real Estate
Added 2 days ago
A
Senior Service Designer
Aviso
Toronto, ON
- $95,000 to $105,000 CAD / year
- Full-time
We're looking to fill an opening for a Senior Service Designer to join our Client Experience team.
Added 2 days ago
A
Tandem Engineering Group
Archinect
Windsor, ON
- Full-time
Tandem is recruiting for a FULL-TIME PERMANENT POSITION as a SENIOR ARCHITECTURAL DESIGNER to support our client’s projects in our WINDSOR, ON LOCATION. APPLY NOW
Added 2 days ago
A
Senior Delivery Manager, Temporary
Aviso
Toronto, ON
- Temporary
The Senior Delivery Manager will serve as the central point of coordination across Agile Squads, partnering closely with the squad leadership triad consisting of the Product Owner, Product…
Added 2 days ago
SP
Senior Digital Designer, Marketing
Stormtech Performance Apparel
Markham, ON
- Full-time
The Senior Digital Designer, Marketing supports the execution and elevation of Stormtech’s digital-first creative across email, social, ecommerce, web assets, digital sales tools, and…
Added 2 days ago
LI
Software Developer
Lotus IT Solutions
Toronto, ON
- Contract
The Government Services Integration Cluster (GSIC), under the Ministry of Public and Business Service Delivery and Procurement, is seeking a Senior Software Developer to join their team…
Added 2 days ago
LI
Software Developer - API
Lotus IT Solutions
Toronto, ON
- Contract
The Government Services Integration Cluster (Ministry of Public and Business Service Delivery and Procurement) is seeking a Senior Software Developer – API to join their team onsite in…
Added 2 days ago
LI
Software Developer - Back End
Lotus IT Solutions
Toronto, ON
- Contract
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…
Added 2 days ago
MD
Senior Learning & Development Specialist - Training & Development Spec 4
Minnesota Direct Care and Treatment
Saint-Paul, NB · St.-Paul, NB
- Full-time
The Senior Learning & Development Specialist serves as a learning and development strategist and designer on the Employee Experience Team. This position is responsible for developing,…
Added 2 days ago
RE
Sr. Competitive Systems Designer (Apex Legends)
Respawn Entertainment
Vancouver, BC · Greater Vancouver Metropolitan Area
- Full-time
Senior Systems Designer – Competitive Systems
Added 2 days ago
I
Intermediate Mechanical Designer
Introba
Vancouver, BC
- Full-time
Our Vancouver Commercial team is looking for an agile, collaborative, creative Mechanical Designer to join and compliment our team. The Mechanical Designer will be eager to demonstrate…
Added 2 days ago
GI
Intermediate Mechanical Designer
Global Infrastructure
Vancouver, BC
- Full-time
Our Vancouver Commercial team is looking for an agile, collaborative, creative Mechanical Designer to join and compliment our team. The Mechanical Designer will be eager to demonstrate…
Added 2 days ago
T
Accounting Assistant – Peru (Focus on Mass Payments)
TeemoPay
Milton, ON
- Part-time
Collaborate with internal departments such as operations and customer service to ensure smooth payment execution.
Added 2 days ago
KF
Project Coordinator
Korn Ferry
Toronto, ON
- $85,000 to $105,000 CAD / year
- Full-time
…required in this role. As a professional services firm, a client service orientation, maturity, and a calm, composed demeanour is a…
Added 2 days ago
M
Senior Manager, Commercial Management
Metrolinx
Canada
- Full-time
We’re looking for a Senior Manager, Commercial Management to lead and provide commercial oversight for diverse projects within the Stations portfolio at various stages of the delivery…
Added 2 days ago
NB
SENIOR ADVISOR
National Bank of Canada
Montreal, QC
- Full-time
A career as a Senior Investment and Financial Planning
Added 2 days ago
Sr. Competitive Systems Designer (Apex Legends)
Electronic Arts
Vancouver, BC
Senior Systems Designer – Competitive Systems
Added 3 days ago
HO
Senior Full-Stack Developer (Senior Digital Product Developer)
House of Commons (Canada) / Chambre des communes (Canada)
Ottawa, ON
- Full-time
Senior Full-Stack Developers collaborate with multidisciplinary teams to build scalable, user-centred digital solutions that support parliamentary business. Through a combination of…
Added 3 days ago
HO
Senior Full-Stack Developer (Senior Digital Product Developer)
House of Commons of Canada Chambre des communes du Canada
Ottawa, ON
- Full-time
Senior Full-Stack Developers collaborate with multidisciplinary teams to build scalable, user-centred digital solutions that support parliamentary business. Through a combination of…
Added 3 days ago
IS
Network Designer - Senior
Innova Solutions
Toronto, ON
- $600 to $620 CAD / day
- Full-time
A client of Innova Solutions is immediately hiring for a Network Designer - Senior

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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