RQ09964/RQ09965 - Sr. Software Developer - API

Source Code; Toronto; On-site; CAD 110,000 - 160,000; Full time

Job summary

Source Code is seeking a Sr. Software Developer - API to design, build, and maintain RESTful APIs using Java and Spring Boot. The role focuses on secure, scalable microservices, with emphasis on data transformation, testing, and documentation.

You will work with Azure cloud services, OAuth2/JWT/SAML authentication, and modern tooling (Docker, Kubernetes, Prometheus, Grafana, ELK). Expect code reviews, mentoring, and occasional on-call support.

Qualifications

• 8+ years of experience as a Sr. API Software Developer.
• REST APIs design, development and testing.
• Spring Integration experience.
• Microservice architecture with Azure services.
• OAuth2, JWT authentication integration.
• SQL Server or Oracle familiarity.
• Data transformation with mapping in Spring Integration context.
• Docker/Kubernetes deployment and orchestration.

Responsibilities

• Design, build and maintain RESTful APIs in Java/Spring Boot.
• Create detailed API specs, endpoints and error handling.
• Provide unit tests and ensure code quality through reviews.
• Profile and optimize APIs for performance and scalability.
• Document deployments and operation guides.

Skills

REST APIs

Spring Integration

Microservices

Azure Cloud

SQL / Relational DBs

OAuth2 / JWT

Docker & Kubernetes

JUnit / Testing

Tools

Docker

Kubernetes

Prometheus

Grafana

ELK Stack

Job description

RQ09964/RQ09965 - Sr. Software Developer - API

About the job RQ09964/RQ09965 - Sr. Software Developer - API

RQ09964/RQ09965 - Sr. Software Developer - API

Contract 1 year

2 Openings

Security Level: CRJMC

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.
• Detailed design and specification documents for RESTful APIs, including endpoints, request/response models, authentication, and error handling.
• Clean, scalable, and secure REST APIs built using Java and Spring Boot, adhering to best practices and company standards.
• Modular and decoupled microservices, designed and deployed independently, with clear inter-service communication protocols.
• Using APIs to develop application based on the business requirement to transform and route data.
• Comprehensive test coverage using tools like JUnit, Mockito, or Test Containers to ensure code reliability and prevent regressions.
• Efficient relational database schemas designed and implemented to support API data storage and retrieval.
• Profiled and optimized APIs for response time, memory usage, and throughput, ensuring high performance under load.
• Secure API calls with proper authentication (e.g., OAuth2, JWT), authorization, input validation, and protection against common vulnerabilities (OWASP).
• 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.
• Produce clear documentation for developed systems such as design, deployment instructions, and operational guides.
• Regular code reviews, feedback sessions, and mentorship to junior developers, ensuring code quality and knowledge sharing.
• 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.
• Available for any on-call on weekend for production issues.

Must-haves:

8+ years of experience as a Sr. API Software Developer

• Extensive experience in designing, building, and consuming REST APIs, including experience with API documentation and testing.
• In-depth knowledge of integration patterns and best practices, including 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.
• Hands-On experience in messaging queuing and event-driven architecture.
• Strong skills in SQL and experience working with relational databases such as SQL Server, or Oracle.
• Knowledge on Integration with Oauth2, JWT, SAML, etc.
• Knowledge of data transformation techniques, such as mapping and normalization, and experience using them in a Spring Integration context.

Nice-to-have:

• Knowledge and experience in Criminal Justice Business and System
• Experience with asynchronous communication, multi-threading.
• Ability to transform data between different formats (JSON, XML, CSV).