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Software Developer - Senior (API

Job in Toronto, Ontario, C6A, Canada
Listing for: Innosystech Inc
Full Time position
Listed on 2026-08-05
Job specializations:
  • Software Development
    Backend Developer, Java Developer
Salary/Wage Range or Industry Benchmark: 110000 - 140000 CAD Yearly CAD 110000.00 140000.00 YEAR
Job Description & How to Apply Below
Position: Software Developer - Senior (API)

Job Title: Software Developer Senior (API)

Location: Toronto

Work Model: Onsite

Duration: 8 months

Extension: Yes

Security Clearance: CRJMC

Must Haves
  • Extensive experience in designing, building, and consuming REST APIs, including API documentation and testing, as well as in-depth knowledge of integration patterns and best practices, with experience designing and building integration solutions using Spring Integration.
  • In-depth knowledge of microservice architecture and experience building scalable, highly available systems using various Azure Services, including hands-on experience with messaging queuing, event-driven architecture, and asynchronous communication/multi-threading.
  • Strong skills in SQL and experience working with relational databases such as SQL Server or Oracle.
  • Knowledge of integration with OAuth2, JWT, SAML, and related authentication/authorization technologies.
  • Knowledge of data transformation techniques, such as mapping and normalization, with experience applying them in a Spring Integration context.
  • Ability to transform data between different formats, including JSON, XML, and CSV.
Description / Responsibilities / Skills Description
  • The Courts Digital Transformation (CDT) initiative is a key modernization initiative for the Ministry of the Attorney General (MAG), Superior Court of Justice (SCJ) and Ontario Court of Justice (OCJ).
  • CDT will replace legacy technology, increase standardization of processes, and achieve integration of systems between courts and business lines.
  • CDT is centered around the procurement and implementation of an end-to-end digital justice solution to support e-filing, document management and sharing, case management, scheduling, a public portal.
  • CDT will modernize the way that justice is delivered and administered in Ontario, by providing justice participants with accessible online options.
Scope
  • A senior API Software Developer with 8+ years of experience will be responsible for creating and using APIs to translate functional specifications into working and tested applications.
  • This includes developing detailed programming specifications, user interface designs, prototypes, writing and/or generating code, compiling data driven programs, conducting unit tests and debugging code.
Assignment Deliverables
  • Clean, scalable, and secure REST APIs built using Java and Spring Boot, adhering to best practices and company standards.
  • Comprehensive test coverage using tools like JUnit, Mockito, or Test Containers to ensure code reliability and prevent regressions.
  • Dockized applications with configuration files, docker-compose scripts, and Kubernetes manifests (if applicable) for smooth deployment.
  • Integrated monitoring (e.g., Prometheus, Grafana) and logging (e.g., ELK stack, Logstash, or Splunk) for operational visibility.
  • Regular code reviews, feedback sessions, and mentorship to junior developers, ensuring code quality and knowledge sharing.
  • Support Assist with troubleshooting production issues (24/7) and support day-to-day operations
Deliverables
  • Detailed design and specification documents for RESTful APIs, including endpoints, request/response models, authentication, and error handling.
  • Modular and decoupled microservices, designed and deployed independently, with clear inter-service communication protocols.
  • Profiled and optimized APIs for response time, memory usage, and throughput, ensuring high performance under load.
  • Produce clear documentation for developed systems such as design, deployment instructions, and operational guides.
  • Weekly or sprint-based status updates on development progress, blockers, and delivered functionalities.
  • Timely resolution of production issues, regression fixes, and performance improvements based on user feedback and testing.
  • Code & Documentations of all type assigned for this role.
Experience & Skill Set Requirements Criteria 1:
Technical Design - 30 Points
  • Strong expertise in Java and the Java development ecosystem, including experience with Spring Boot.
  • In-depth knowledge of microservice, Event Driven architecture and experience building scalable, highly available systems.
  • Extensive experience with REST API design and development, including experience with API documentation and testing.
  • Practical knowledge in applying various design patterns and standards to the technical design and development.
  • Strong skills in SQL and experience working with relational databases, such as SQL Server.
Criteria 2:
Integration - 30 Points
  • In-depth knowledge of integration patterns and best practices, including experience designing and building integration solutions using Spring Integration
  • Hands-On experience in messaging queuing (Azure Service Bus) and event driven architecture.
Criteria 3:
Technical Framework and Middleware - 25 Points
  • In-depth knowledge of microservice architecture and experience building scalable, highly available systems using various Azure Services.
  • Must have prior experience in working with containerized environments such as Azure, Open Shift, Docker, Kubernetes, Microservices,…
Position Requirements
10+ Years work experience
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