Java Full Stack Developer

Epsilon Solutions Ltd.; Mississauga; On-site; CAD 110,000 - 150,000; Full time

Job summary

Epsilon Solutions Ltd. is seeking an experienced Senior Full-Stack Engineer to design, develop, and implement high-quality features across the full stack.

You will work on real-time messaging systems, build scalable back-end services with Java/Spring Boot, tailor relational databases (Oracle/SQL), and deploy via Docker/Kubernetes with CI/CD pipelines. Collaboration with product owners and designers is essential to deliver robust solutions.

Qualifications

• 6+ years of professional software development experience.
• Strong problem-solving and analytical skills.
• Expertise in front-end development with React and/or Angular.
• Proficiency in HTML5 and CSS3.
• Extensive experience with Java and Spring Boot for back-end services.
• Experience designing, developing, and deploying microservices.
• Hands-on experience with real-time messaging systems (Kafka, RabbitMQ).
• Experience with ETL/data integration pipelines.
• Strong knowledge of relational databases (Oracle, SQL).
• Docker and Kubernetes experience; CI/CD with Jenkins.
• Cloud deployments on AWS, Azure, or GCP.

Responsibilities

• Design, develop, and implement high-quality software features across the full stack.
• Build real-time messaging solutions to ensure high-throughput data flow.
• Collaborate with product owners, UI/UX designers, and engineers to translate requirements into code.
• Design, optimize database schemas and queries for Oracle/SQL databases.
• Utilize Docker and Kubernetes for development, deployment, and management.
• Contribute to CI/CD pipelines using Jenkins.
• Support cloud deployment strategies for scalable and secure apps.
• Perform code reviews to uphold quality and standards.
• Troubleshoot and resolve complex issues across the stack; propose improvements.

Skills

Full-stack engineering

React

Angular

HTML5/CSS3

Java/Spring Boot

Microservices design

CI/CD (Jenkins)

Cloud deployments

SQL/Oracle

Real-time messaging (Kafka/RabbitMQ)

Tools

Docker

Kubernetes

Jenkins

Oracle SQL

Job description

Job Description

Independently design, develop, and implement high-quality software features and modules across the full stack.

Design and implement solutions involving real-time messaging systems to ensure high-throughput, low-latency data flow.

Collaborate effectively with product owners, UI/UX designers, and other engineers to understand requirements and translate them into technical specifications and elegant code.

Design, develop, and optimize database schemas and complex queries for relational databases, with strong knowledge of Oracle and SQL databases.

Utilize containerization technologies (Docker) and orchestration platforms (Kubernetes) for efficient development, deployment, and management of applications.

Actively participate in the development and maintenance of continuous integration and continuous delivery (CI/CD) pipelines using tools like Jenkins.

Contribute to cloud deployment strategies, ensuring applications are resilient, scalable, and secure in cloud environments.

Conduct thorough code reviews for peers, providing constructive feedback to maintain code quality and architectural standards.

Troubleshoot, debug, and resolve complex technical issues across all layers of the application stack with strong logical deduction.

Proactively identify areas for improvement, research new technologies, and propose innovative solutions to enhance product capabilities and development processes.

Required Skills and Experience

• 6+ years of professional experience in software development, with a significant track record in full-stack engineering.
• Demonstrable strong logical and problem-solving skills, with a focus on designing efficient and robust solutions.
• Expertise in front-end development with hands-on experience in React and/or Angular.
• Proficiency in core web technologies including HTML5 and CSS3.
• Extensive experience with Java and the Spring Boot framework for building high-performance back-end services.
• Proven experience in designing, developing, and deploying microservices.
• Hands-on experience with real-time messaging systems (e.g., Kafka, RabbitMQ).
• Experience in designing, implementing, and optimizing ETL processes or data integration pipelines.
• Strong knowledge of relational databases, particularly Oracle and SQL, including schema design, query optimization, and stored procedures.
• Proficiency in containerization using Docker and orchestration with Kubernetes.
• Practical experience with CI/CD platforms, such as Jenkins, for automated build, test, and deployment.
• Experience with cloud deployments on major platforms (e.g., AWS, Azure, GCP).
• Excellent analytical, debugging, and troubleshooting skills.
• Strong communication and collaboration skills, with the ability to articulate complex technical concepts clearly