Software developer jobs in Mississauga, ON and nearby

Software developer jobs within 25 km of Mississauga, ON, Canada. Nearby towns and cities are included. Distances are straight-line, not driving distances.

Counted Nov 5, 2026

Hiring at a glance

View jobs

Open jobs: 746
Employers: 194

Advertised starting pay

Average starting payCAD / hour: $67.58Across 40 listings
Average starting payCAD / year: $92,570Across 40 listings

Employer-advertised starting pay, not employee salaries. Currencies and pay periods stay separate.

Where work happens

Remote: 0%0 listings
Hybrid: 32%239 listings
On-site: 68%506 listings

Not specified: <1% (1 listing)

Employers hiring include S M Software Solutions Inc (239), Intuit (20), Lotus IT Solutions (19).

Sources & calculation notes

These figures describe the listings on this role page at the date shown, not the whole job market. Listings can change.

Employer-listed minimums from at least 10 listings per currency and pay period. These are advertised starting amounts, not employee salaries. Jobs without a minimum and unusual amounts are excluded.

Hybrid and on-site classifications may be inferred from descriptions. Check the original ad. How we count

Software developer jobs in Mississauga, ON and nearby

Within 25 km

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Added 9 days ago
SM
RQ11736 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer – Front End with extensive experience designing, developing, testing, deploying, and maintaining large-scale, multi-client, Internet-ready web…
Added 9 days ago
SM
RQ11557 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Front-End Software Developer with extensive experience in web application development, GIS mapping customization, and front-end technologies. The ideal candidate…
Added 9 days ago
SM
RQ11557 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Front-End Software Developer with extensive experience in web application development, GIS mapping customization, and front-end technologies. The ideal candidate…
Added 9 days ago
LI
Senior Software Developer - Full Stack
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
Added 9 days ago
SM
RQ11557 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Front-End Software Developer with extensive experience in web application development, GIS mapping customization, and front-end technologies. The ideal candidate…
Added 9 days ago
SM
RQ00795 – Software Developer – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a Senior Software Developer with strong experience in Microsoft Visual Studio (.NET) MVC, SQL Server, Microsoft Azure, Python, Django, AWS, Celery, GraphQL, and REST APIs.…
Added 9 days ago
SM
RQ00795 – Software Developer – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a Senior Software Developer with strong experience in Microsoft Visual Studio (.NET) MVC, SQL Server, Microsoft Azure, Python, Django, AWS, Celery, GraphQL, and REST APIs.…
Added 9 days ago
LI
Senior Software Developer - Full Stack
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
Added 9 days ago
SM
RQ00795 – Software Developer – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a Senior Software Developer with strong experience in Microsoft Visual Studio (.NET) MVC, SQL Server, Microsoft Azure, Python, Django, AWS, Celery, GraphQL, and REST APIs.…
Added 9 days ago
SM
RQ11737 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer – Full Stack with extensive experience designing and developing large-scale, multi-client web applications, Java-based enterprise solutions, REST…
Added 9 days ago
SM
RQ11738 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience designing, developing, integrating, testing, deploying, and maintaining large-scale enterprise web…
Added 9 days ago
SM
RQ10575 – Software Developer – ETL – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a Senior Software Developer – ETL with extensive experience in data migration, ETL development, data conversion, database technologies, and digital transformation…
Added 9 days ago
SM
RQ11736 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer – Front End with extensive experience designing, developing, testing, deploying, and maintaining large-scale, multi-client, Internet-ready web…
Added 9 days ago
SM
RQ11736 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer – Front End with extensive experience designing, developing, testing, deploying, and maintaining large-scale, multi-client, Internet-ready web…
Added 9 days ago
SM
RQ10575 – Software Developer – ETL – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a Senior Software Developer – ETL with extensive experience in data migration, ETL development, data conversion, database technologies, and digital transformation…
Added 9 days ago
SM
RQ11737 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer – Full Stack with extensive experience designing and developing large-scale, multi-client web applications, Java-based enterprise solutions, REST…
Added 9 days ago
SM
RQ11738 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience designing, developing, integrating, testing, deploying, and maintaining large-scale enterprise web…
Added 9 days ago
SM
RQ11738 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Full Stack Software Developer with extensive experience designing, developing, integrating, testing, deploying, and maintaining large-scale enterprise web…
Added 9 days ago
SM
RQ11737 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer – Full Stack with extensive experience designing and developing large-scale, multi-client web applications, Java-based enterprise solutions, REST…
Added 9 days ago
SM
RQ10575 – Software Developer – ETL – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a Senior Software Developer – ETL with extensive experience in data migration, ETL development, data conversion, database technologies, and digital transformation…
Added 10 days ago
2I
Senior Software Developer - Full Stack
2iSolutions Inc.
Toronto, ON
- Contract
Our Toronto-based client is hiring a Senior Full Stack Software Developer for an 11-month onsite contract.
Added 10 days ago
TC
Senior Application Developer
Tata Consultancy Services
Toronto, ON
- $90,000 to $100,000 CAD / year
- Full-time
Added 10 days ago
BR
Senior Software Developer – ETL / Data Migration
BITS Recruiting
Toronto, ON
- $90 to $96 CAD / hour
- Contract
We are seeking a Senior Software Developer specializing in ETL and data migration to support a digital transformation initiative for a public-sector client. The successful candidate will…
Added 10 days ago
S
Software Developer Intern - Server (May 2027 - 12 Months)
SOTI
Mississauga, ON
- Full-time
As an intern at SOTI you will be involved in the design/development/support of new or existing software applications. These applications range from cloud-based solutions, mobile apps for…
Added 10 days ago
SM
RQ00811 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a Senior Full Stack Software Developer with extensive hands-on experience in Java, Spring Boot, REST APIs, HAPI FHIR, NextGen Connect (Mirth), HL7 v2, ReactJS, and healthcare…

Lotus IT Solutions

Senior Software Developer - Full Stack

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Nov 25, 2026
Experience: 10+ years of experience designing and developing large-scale, multi-client web applications, or equivalent depth of senior development experience.
Posting language: English
Posted: Oct 26, 2026

Original job description

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Ref: RQ11738 Contract – 11 Months (Extension Possible) Onsite – Toronto (222 Jarvis St. 5th Floor)

Posted Date: 2026-10-26

Location: Onsite – Toronto (222 Jarvis St. 5th Floor)

Public Sector Experience: Required – OPS / Public Sector

Contract End Date: 2027-09-28 *

Rate: $103/hour

Overview

The Government Services Integration Cluster (Ministry of Public and Business Service Delivery and Procurement) is seeking a Senior Software Developer – Full Stack to design, develop, integrate, and maintain enterprise platform capabilities across the full application stack. Working alongside architects, product managers, UX designers, QA specialists, DevOps engineers, and ministry partners, you will build reusable platform services that support multiple government programs while delivering secure, scalable, and maintainable software through frequent Agile releases and new integrations.

Key Responsibilities

Translate approved technical system specifications into working, tested, secure, and maintainable enterprise platform applications.
Design and develop frontend, backend, API, integration, workflow, middleware, and data-access components using approved patterns and standards.
Build and maintain Java-based microservices, REST APIs, RESTful web services, Internet-ready applications, and reusable platform services.
Develop and maintain database objects, queries, data transformations, conversion routines, and integration components using relational or hierarchical database technologies.
Implement security gateways and protocols, including identity, access, token, certificate, and secure communications requirements (JWT, OAuth 2.0, SSL).
Create and maintain automated unit, integration, API, database, and user-interface tests.
Participate in design walkthroughs, code reviews, impact assessments, estimation, backlog refinement, sprint planning, and technical decision-making.
Review, analyse, and modify build, configuration, product-installation, and deployment scripts including coding, testing, and debugging.
Resolve and troubleshoot technical problems arising during development, implementation, conversion, migration, deployment, and operation.
Provide post-implementation support, resolve production issues, and improve application performance, reliability, extensibility, and maintainability.
Collaborate with business analysts, architects, UX designers, testers, DevOps engineers, and security specialists throughout the full software development lifecycle.
Prepare and maintain user, system, technical, deployment, and support documentation.

Must-Have Requirements

10+ years of experience designing and developing large-scale, multi-client web applications, or equivalent depth of senior development experience.
Extensive hands-on Java development experience with Oracle, SQL, or comparable relational database technologies.
Significant experience designing and developing REST APIs and RESTful web services.
Proven experience with microservice architecture and applying core architecture principles to improve extensibility and maintainability.
Experience with object-oriented coding practices, current design patterns, refactoring, clean code, and structured development methodologies.
Experience developing Internet-ready applications using Agile or rapid application development approaches.
Experience with relational and hierarchical database technologies, query languages, SQL tuning, and data-access components.
Experience with security gateways and protocols including JSON Web Tokens (JWT), OAuth 2.0, and SSL certificates.
Experience with middleware, gateways, communications protocols, enterprise integrations, and data migration or conversion activities.
Experience using Azure DevOps or comparable tools for work management, source control, build, testing, and deployment pipelines.
Experience conducting design walkthroughs, code reviews, impact assessments, and technical troubleshooting.

Nice-to-Have Skills

Experience eliciting and documenting requirements from diverse business stakeholders, subject-matter experts, architects, and IT professionals.
Experience providing implementation, conversion, migration, and post-implementation support for complex enterprise applications.
Strong written and verbal communication, analytical, problem-solving, and negotiation skills with the ability to present ideas and lead technical discussions across functional and technical teams.

Work Environment

This is a fully onsite role based at 222 Jarvis St., 5th Floor, Toronto, ON, 5 days per week. The team follows Agile delivery methodologies including sprint planning, backlog refinement, and iterative releases. No security clearance is required for this engagement.

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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, integrate, test, and maintain secure, scalable full-stack enterprise applications, including Java microservices, REST APIs, database components, integrations, and reusable platform services. Collaborate across Agile delivery teams to review designs and code, troubleshoot and support production systems, improve application quality, and maintain technical and operational documentation.

Requirements

Requires 10 or more years of senior software development experience, extensive hands-on Java and relational database experience, and demonstrated expertise in REST APIs, microservices, security protocols, and enterprise integrations. Candidates should also have experience with Agile development, automated testing, Azure DevOps or comparable tools, technical reviews, and troubleshooting.

Skills

Java
Oracle
SQL
REST APIs
Microservices
Relational Databases
Hierarchical Databases
JWT
OAuth 2.0
SSL Certificates
Azure DevOps
Agile Development
Automated Testing
Enterprise Integration
Data Migration
Object-Oriented Programming

Visa sponsorship

Not detected in the job text

Keywords

Java
Oracle
SQL
REST APIs
RESTful Web Services
Microservices
Relational Databases
Hierarchical Databases
JWT
OAuth 2.0
SSL Certificates
Azure DevOps
Agile
Rapid Application Development
Automated Testing
Unit Testing
Integration Testing
API Testing
Database Testing
UI Testing
Middleware
Enterprise Integration
Data Migration
Data Conversion
CI/CD Pipelines
Object-Oriented Programming
Design Patterns
Code Reviews
Government Services
Full-Stack Development

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