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Senior software developer - back end

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Randstad

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Location:
Canada , North York, Toronto

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

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Job Description:

We are looking for a highly technical Senior Software Developer (Back End) to lead the development and management of server-side logic and data interchange. In this role, you will translate complex technical specifications into robust, production-ready applications, ensuring high performance and responsiveness for all front-end requests. You will be a key contributor to the design and implementation of enterprise-grade APIs and middle-tier services.

Job Responsibility:

  • Application Development: Translate technical specifications into working, tested code using Java, Spring Boot, and Node.js
  • API Design & Integration: Design and implement scalable RESTful and SOAP interfaces, incorporating load balancing, service discovery, and resiliency patterns
  • System Optimization: Tune performance across the entire stack, including middleware processing, database query optimization, and API response times
  • Microservices & Architecture: Design and implement microservices based on modern cloud-based architectural principles and component-driven development
  • Security & Compliance: Apply secure coding practices and API hardening techniques to ensure data protection in compliance with PCI standards and WCAG 2.0/AODA requirements
  • Database Management: Manage the definition and maintenance of central databases, utilizing extensive experience with Oracle and Open Source technologies
  • DevOps Integration: Utilize Azure DevOps for backlog management, CI/CD pipeline execution, code branching, and automated deployments
  • Collaboration: Partner with IT professionals throughout the SDLC, participating in design walkthroughs and providing post-implementation support

Requirements:

  • Extensive experience with Java, Spring Boot, JPA, and Apache Camel
  • Deep hands-on experience with Node.js for developing scalable back-end services
  • 10+ years of experience with Oracle and Open Source databases
  • Proficiency with Azure DevOps and modern cloud-based architectures
  • Proven track record in designing RESTful interfaces that support enterprise-grade front-end applications (React)
  • Strong knowledge of secure web application development, including PCI standards and AODA/WCAG 2.0 compliance
  • Excellent analytical, negotiation, and problem-solving skills with a team-player mindset
What we offer:
  • High-Performance Environment: Work on enterprise-grade applications with a modern, diversified tech stack (Java + Node.js)
  • Strategic Location: Convenient onsite engagement in downtown Toronto
  • Immediate Impact: Influence microservice design and architectural implementation from day one
  • Extension Potential: Initial 4-month contract with a clear path for continued engagement

Additional Information:

Job Posted:
March 04, 2026

Expiration:
April 27, 2026

Employment Type:
Fulltime
Work Type:
On-site work
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