Lead Java Developerfreelance.ca • Toronto, Canada

Lead Java Developer

freelance.ca • Toronto, Canada

30+ days ago

Job type

Full-time

Job description

About the job

Role : Lead Java Developer

Location : Toronto, ON (Hybrid)

Duration : Long Term

Job Summary

We are seeking an experienced Senior Java Developer with strong expertise in Java, SQL, and AWS to design, develop, and maintain scalable enterprise applications. The ideal candidate will have hands-on experience building cloud-native solutions, working with large-scale databases, and collaborating with cross-functional teams to deliver high-quality software.

Key Responsibilities

Design, develop, test, and maintain enterprise-grade applications using Java / J2EE
Develop RESTful APIs and microservices using Spring, Spring Boot
Write complex and optimized SQL queries , stored procedures, and database schemas
Architect, deploy, and manage applications on AWS cloud
Work with AWS services such as EC2, S3, RDS, Lambda, ECS / EKS, CloudWatch
Implement security, scalability, performance, and high-availability best practices
Perform code reviews, enforce coding standards, and mentor junior developers
Collaborate with business analysts, architects, DevOps, and QA teams
Troubleshoot production issues and perform root cause analysis
Participate in Agile / Scrum ceremonies and sprint planning

Required Skills & Qualifications

10+ years of experience in software development using Java

Strong expertise in Java 8+ , Spring Framework, Spring Boot

Extensive experience with SQL (Oracle, MySQL, PostgreSQL, or SQL Server)

Hands-on experience with AWS cloud services

Experience with microservices architecture

Knowledge of REST APIs , JSON, XML

Experience with ORM frameworks such as Hibernate / JPA

Familiarity with CI / CD pipelines (Jenkins, GitHub Actions, GitLab CI)

Strong understanding of design patterns and object-oriented principles

Experience with Linux / Unix environments

Proficiency with version control tools like Git

Nice to Have

Experience with Docker and Kubernetes

Exposure to NoSQL databases (DynamoDB, MongoDB)

Experience with Kafka or other messaging systems

Knowledge of Terraform or CloudFormation

Prior experience in high-volume, high-availability systems

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Java Developer • Toronto, Canada

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