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Added 10 mins ago
SM
RQ11617 – UX Designer – Junior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Junior UX Designer with experience in user experience (UX) design, user interface (UI) design, interactive design, user research, wireframing, prototyping, and designing…
Added 10 mins ago
SM
RQ11736 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Experience developing detailed programming specifications and designing, coding, debugging, documenting, and maintaining responsive user-interface components.
Added 10 mins ago
SM
RQ11618 – UX Designer – Junior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Junior UX Designer with experience designing intuitive, user-friendly, and visually appealing digital experiences for web and mobile applications. The ideal candidate will…
Added 10 mins ago
SM
RQ11737 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
…deploys, and maintains enterprise platform capabilities across the user-interface, service, API, workflow, integration, and data-access…
Added 17 hours ago
SM
RQ11618 – UX Designer – Junior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Junior UX Designer with experience designing intuitive, user-friendly, and visually appealing digital experiences for web and mobile applications. The ideal candidate will…
Added 17 hours ago
SM
RQ11737 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
…deploys, and maintains enterprise platform capabilities across the user-interface, service, API, workflow, integration, and data-access…
Added 17 hours ago
SM
RQ11736 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Experience developing detailed programming specifications and designing, coding, debugging, documenting, and maintaining responsive user-interface components.
Added 1 day ago
SM
RQ11736 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Experience developing detailed programming specifications and designing, coding, debugging, documenting, and maintaining responsive user-interface components.
Added 1 day ago
A
Senior Interaction Designer [AQ-23642]
Aquent
Toronto, ON
- Contract
Drive user comprehension and optimize task performance by expertly leveraging user interface patterns and behaviors.
Added 1 day ago
LI
UX Designer
Lotus IT Solutions
Toronto, ON
- Contract
…Business Service Delivery and Procurement, is seeking a Junior UX Designer to join their team on a fully onsite basis. In this role, the successful consultant will design intuitive,…
Added 1 day ago
LI
UX Designer
Lotus IT Solutions
Toronto, ON
- Contract
…Business Service Delivery and Procurement, is seeking a Junior UX Designer to join their team on a fully onsite engagement in Toronto. The successful candidate will design intuitive,…
Added 1 day ago
SM
RQ11736 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Experience developing detailed programming specifications and designing, coding, debugging, documenting, and maintaining responsive user-interface components.
Added 1 day ago
SM
RQ11736 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Experience developing detailed programming specifications and designing, coding, debugging, documenting, and maintaining responsive user-interface components.
Added 1 day ago
SM
RQ11736 – Software Developer – Front End – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
Experience developing detailed programming specifications and designing, coding, debugging, documenting, and maintaining responsive user-interface components.
Added 1 day ago
B
Digital CX/UX Designer
BrokerLink
Calgary, AB · AB · Toronto, ON
- Full-time
As a UX/UI Designer, you'll play a key role in shaping digital experiences used by thousands of customers, brokers, and employees. You'll combine customer insights, design expertise, and…
Added 3 days ago
RT
User Experience Designer
Russell Tobin
Toronto, ON
- $50 to $60 CAD / hour
- Contract
Relevant experience creating GUI designs based on user interaction and performance
Added 3 days ago
Senior Lead Designer- UI/UX
Electronic Arts
Vancouver, BC
…and the ability to inspire teams to think beyond traditional interface…
Added 3 days ago
Lead Designer - UI/UX
Electronic Arts
Vancouver, BC
…Design, Game Design, and Art, helping teams connect traditional interface design with spatial, environmental, and in-world…
Added 3 days ago
UX Designer (12-Month Fixed Term Contract)
OCS Ontario Cannabis Store
Toronto, ON
The UX Designer defines and champions user-centric experiences across both Business-to-Business (B2B) and Business-to-Consumer (B2C) platforms. In this role, you will collaborate with a…
Added 3 days ago
M
RQ11736 - Software Developer- Front End - Senior
Maarut
Toronto, ON
- Contract
accessible, responsive, and user-facing capabilities of the enterprise
Added 3 days ago
M
RQ11737 - Software Developer - Full Stack - Senior
Maarut
Toronto, ON
- Contract
enterprise platform capabilities across the user-interface, service, API,
Added 3 days ago
OO
UX Designer (12-Month Fixed Term Contract)
OCS Ontario Cannabis Store
Toronto, ON
- Contract
The UX Designer defines and champions user-centric experiences across both Business-to-Business (B2B) and Business-to-Consumer (B2C) platforms. In this role, you will collaborate with a…
Added 3 days ago
SE
User Experience Designer
SmartSource Electronics
Mississauga, ON
- Full-time
Role Description This is a full-time, on-site User Experience Designer role based in Mississauga, ON. The User Experience Designer will translate business and user needs into intuitive,…
Added 3 days ago
FS
FPGA Designer
Fidus Systems
Canada
- Full-time
The FPGA Designer plays a key role in designing and delivering complex FPGA-based systems for Fidus clients. You will work directly with customers and internal Fidus teams to define…
Added 3 days ago
I
Senior UX Designer
IMDEX
Calgary, AB
- $86,000 to $121,000 CAD / year
- Full-time
Define and drive the UX strategy at the product level, ensuring design decisions are grounded in user needs and aligned to business objectives. Work closely with UI Designers, Product…

Maarut

RQ11737 - Software Developer - Full Stack - Senior

Toronto, ON, Canada

Contract

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Job details

Job type: Contract
Posting language: English
Posted: Oct 22, 2026

Original job description

Description:

Designs, develops, integrates, tests, deploys, and maintains enterprise platform capabilities across the user-interface, service, API, workflow, integration, and data-access layers. The role builds reusable platform services that can support multiple government programs, while also implementing the service-specific connections required to onboard registries, permitting, forms, payments, notifications, documents, identity, and other business-facing functions. Working with architects, product managers, analysts, UX designers, QA specialists, DevOps engineers, security and privacy teams, and ministry partners, the Senior Software Developer – Full Stack converts approved designs and requirements into secure, scalable, observable, and maintainable software. The role provides technical leadership through design input, estimation, code review, automated testing, troubleshooting, documentation, mentoring, and production support, helping ensure the platform remains stable while evolving through frequent releases and new integrations.

Experience:

Ten or more years of experience designing and developing large-scale, multi-client web applications, or an 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.
Experience translating technical system specifications into working, tested applications, including detailed programming specifications, code development, compilation, debugging, documentation, maintenance, and unit testing.
Knowledge and 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 and using rapid application development or Agile delivery approaches.
Experience with relational and hierarchical database technologies, query languages, SQL tuning, and data-access components.
Experience with security gateways and protocols such as JSON Web Tokens, 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.
Experience eliciting and documenting information from diverse business stakeholders, subject-matter experts, architects, and other IT professionals.
Experience providing implementation, conversion, migration, and post-implementation support for complex applications.

General Skills / Duties:

Translate approved technical system specifications into working, tested, secure, and maintainable enterprise platform applications.
Develop detailed programming specifications and design, write, generate, compile, debug, document, maintain, and unit test application code.
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.
Create and maintain automated unit, integration, API, database, and user-interface tests.
Participate in design walkthroughs, impact assessments, code reviews, estimation, backlog refinement, sprint planning, release 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.
Collaborate with business analysts, architects, UX designers, testers, DevOps engineers, security specialists, and other IT professionals throughout the software development lifecycle.
Provide post-implementation support, resolve production issues, and improve application performance, reliability, extensibility, and maintainability.
Prepare and maintain user, system, technical, deployment, and support documentation.
Provide technical guidance and quality oversight while meeting delivery commitments and adapting to changing priorities.

Requirements

Experience and Skill Set Requirements:

Must Haves:

Ten or more years of experience as a designer and developer of large-scale, multi-client web applications, or equivalent senior experience.
Extensive hands-on Java development experience with Oracle, SQL, or comparable relational databases.
Significant experience with REST APIs, RESTful web services, microservice architecture, and Internet-ready applications.
Experience with security gateways and protocols, including JSON Web Tokens, OAuth 2.0, SSL certificates, secure communications, and identity integration.
Experience with relational and hierarchical databases, query languages, SQL tuning, middleware, gateways, communications protocols, conversion, and migration.

Nice to have:

OPS or public sector exp.

Skill Set Requirements:

Core Skills and Experience:

Ten or more years of experience as a designer and developer of large-scale, multi-client web applications, or equivalent senior experience.
Extensive hands-on Java development experience with Oracle, SQL, or comparable relational databases.
Significant experience with REST APIs, RESTful web services, microservice architecture, and Internet-ready applications.
Experience translating specifications into working applications using structured and Agile methods, object-oriented practices, design patterns, clean code, automated testing, and Azure DevOps.

Technical Skills and Experience:

Experience with security gateways and protocols, including JSON Web Tokens, OAuth 2.0, SSL certificates, secure communications, and identity integration.
Strong understanding of Agile methodologies, structured development methods, object-oriented design, current design patterns, refactoring, and clean code.
Experience with relational and hierarchical databases, query languages, SQL tuning, middleware, gateways, communications protocols, conversion, and migration.
Experience with application design, deployment, installation scripts, troubleshooting, post-implementation support, and technical documentation.

Soft Skills:

Strong written and verbal communication, analytical, systematic problem-solving, decision-making, interpersonal, and negotiation skills.
Ability to develop and present ideas, lead or participate in design walkthroughs, and work effectively with functional and technical teams.
Demonstrated ability to perform under pressure, adapt to change, work within aggressive timelines, and consistently meet deadlines.

Public-Sector Experience:

Knowledge of Ontario Public Service development standards, processes, governance, security, accessibility, information-management, and documentation expectations.

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More about this job

Responsibilities

The Senior Software Developer designs, develops, and maintains enterprise platform capabilities across the full stack, including UI, services, and data-access layers. They provide technical leadership through code reviews, mentoring, and collaboration with cross-functional teams to ensure scalable and secure software delivery.

Requirements

Candidates must have ten or more years of experience in large-scale web application development with extensive hands-on Java and relational database expertise. Proficiency in microservice architecture, RESTful APIs, and security protocols like OAuth 2.0 is essential for this role.

Skills

Java
Full stack development
REST APIs
Microservices
Oracle
SQL
Azure DevOps
Agile methodologies
JSON Web Tokens
OAuth 2.0
SSL certificates
System design
Code review
Automated testing
Database tuning
Middleware

Visa sponsorship

Not detected in the job text

Keywords

Software Developer
Full Stack
Java
Oracle
SQL
REST APIs
Microservices
Azure DevOps
Agile
JSON Web Tokens
OAuth 2.0
SSL
Middleware
Database tuning
System architecture
Unit testing
CI/CD
Enterprise integration
Object-oriented programming
Design patterns
Clean code
Refactoring
Technical documentation
Production support
Security gateways
Identity management
Data migration
Web applications
Scalability
Observability

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