Senior Java Software Engineer

HCR Permanent Search; Markham; Hybrid; CAD 120,000 - 160,000; Full time

Job summary

HCR Personnel Solutions Inc. seeks a Senior Software Engineer in the Markham area to design and maintain scalable Java-based backend applications, RESTful APIs, and system integrations.

The role emphasizes distributed systems, security, and performance improvements in a hybrid work setting. The ideal candidate brings 8-12+ years of backend experience with CS/SE education, and strong skills in Java, Spring Boot, Kafka, and containerized architectures (Kubernetes/OpenShift).

Qualifications

• 8-12+ years of professional backend development experience with a degree in CS, Software Engineering, or related field.
• Strong expertise in Java, Spring Boot, Kafka, and containerized architectures (Kubernetes/OpenShift).
• Experience with low-level network socket programming (TCP/IP, UDP) and distributed system integration patterns.
• Understanding of secure application development (OAuth2, JWT, encryption) and strong Git proficiency.
• Nice-to-Have: CI/CD pipelines, Linux environments, scripting, and cloud platforms (AWS/Azure/GCP).

Responsibilities

• Design and maintain scalable Java-based backend applications, RESTful APIs, and system integrations.
• Optimize system performance, security, and reliability across distributed environments.
• Troubleshoot production issues and write robust unit/integration tests.
• Collaborate on system architecture and contribute to continuous improvement.

Skills

Backend design

Distributed systems

Security best practices

Education

Bachelor's degree in CS/Software Engineering

Tools

Java

Spring Boot

Kafka

Kubernetes/OpenShift

TCP/IP

UDP

OAuth2/JWT/encryption

Git

CI/CD

Linux

Scripting

AWS/Azure/GCP

Job description

Our client, a leading technology company in the wireless communications space, is seeking a Senior Software Engineer to join their team in the Markham area.

Job Title: Senior Software Engineer

Location: Markham ON

Position Type: Hybrid

Key Requirements

• Experience: 8-12+ years of professional backend development experience with a degree in CS, Software Engineering, or related field.
• Core Tech: Strong expertise in Java, Spring Boot, Kafka, and containerized architectures (Kubernetes / OpenShift).
• Networking & Protocols: Experience with low-level network socket programming (TCP/IP, UDP) and distributed system integration patterns.
• Security & Tools: Understanding of secure application development (OAuth2, JWT, encryption) and strong Git proficiency.
• Nice-to-Have: CI/CD pipelines, Linux environments, scripting, and cloud platforms (AWS/Azure/GCP).

Responsibilities

• Design and maintain scalable Java-based backend applications, RESTful APIs, and system integrations.
• Optimize system performance, security, and reliability across distributed environments.
• Troubleshoot production issues and write robust unit/integration tests.
• Collaborate on system architecture and contribute to continuous improvement.

HCR Personnel Solutions Inc. welcomes applications from people with disabilities. Accommodation is available upon request for candidates taking part in all aspects of the recruitment and selection process.