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Senior Java Backend Developer

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Summary

A senior backend engineer in Toronto who designs, builds and maintains scalable Java and Spring Boot microservices and REST APIs for high-volume, business-critical systems. Day to day spans solution design, development, testing, code reviews and production support, with growing use of AI-assisted development tools.

  • Design, develop and enhance scalable backend applications and services using Java and Spring-based technologies
  • Build and maintain APIs and microservices supporting high-volume, business-critical applications
  • Work across solution design, development, testing, code review and production support
  • Collaborate with developers, Business Systems Analysts, Technical Leads and stakeholders to translate business requirements into technical solutions
  • Apply object-oriented design principles, engineering practices and design patterns
  • Develop and integrate RESTful APIs and services within complex enterprise environments
  • Work with relational databases and data persistence technologies
  • Participate in code reviews, automated testing, debugging and performance optimization
  • Contribute to continuous improvement of engineering practices, development processes and delivery effectiveness
  • Use modern development tools and explore AI-assisted engineering techniques
  • Communicate with client and internal teams in a collaborative delivery environment

Requirements

  • 5+ years of professional software development experience, with strong hands-on experience developing backend applications in Java
  • Strong experience with Spring and Spring Boot
  • Experience designing and developing REST APIs and microservices
  • Strong understanding of object-oriented programming, software design principles and common design patterns
  • Experience working with relational databases, SQL and core database concepts
  • Experience with Git-based source control and modern software development practices
  • Experience writing and maintaining automated tests and participating in code reviews
  • Strong debugging, problem-solving and analytical skills
  • Experience working within Agile software delivery teams
  • Strong communication and collaboration skills, with the ability to work effectively with both technical and business stakeholders
  • Bachelor's degree in Computer Science, Engineering or a related discipline, or equivalent practical experience
  • Previous experience within banking, payments or financial services
  • Experience building or supporting high-volume, transaction-oriented systems
  • Experience with cloud-native application development and modern enterprise architectures
  • Experience with messaging, event-driven architectures or distributed systems
  • Hands-on experience using AI-assisted software development tools such as GitHub Copilot, Cursor, Claude Code or similar
  • Interest in applying AI across requirements analysis, solution design, coding, testing, debugging and code review
  • Experience working in consulting or client-facing delivery environments

Core Competencies

Demonstrates expertise in designing and developing scalable backend applications using Java and Spring technologies, with a strong focus on RESTful APIs and microservices. Proven ability to collaborate effectively with cross-functional teams and apply modern software development practices, including Agile methodologies.

Highest-signal resume keywords

  • Java Development
  • Spring Framework
  • REST API Development
  • Relational Database Management
  • Agile Software Delivery

ATS Optimization Keywords

Hard Skills

  • Backend Application Development
  • Microservices Architecture
  • Object-Oriented Programming
  • SQL
  • Automated Testing
  • Code Review
  • Debugging
  • Performance Optimization
  • Design Patterns
  • Cloud-Native Application Development

Soft Skills

  • Problem-Solving
  • Analytical Skills
  • Communication
  • Collaboration

Certifications & Qualifications

  • Bachelor's Degree in Computer Science
  • Engineering or Related Discipline

Industry Keywords

  • Banking
  • Payments
  • Financial Services
  • High-Volume Systems
  • Consulting

Tools & Technologies

  • Git
  • AI-Assisted Development Tools
  • Spring Boot
  • Modern Development Tools

Skills

See also

Backend jobs by country — openings, pay and top skills →

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