12+ years of experience for Java back end

Overview:

We are seeking a HANDS-ON Principal Back-End Java Developer with a strong foundation in enterprise-grade backend architecture, Java ecosystems, and modern AI integrations. This role will drive the design and delivery of scalable back-end systems, while exploring and embedding AI-powered components (e.g., recommendation systems, NLP pipelines, intelligent automation) into product workflows.

Please do NOT apply if you're not practicing, we do not want people management, or leading team. We are looking for hard core software developer.

You will play a technical leadership role, mentoring engineers, collaborating cross-functionally, and aligning systems with long-term business goals.

Key Responsibilities:

• Architect and develop scalable, reliable, and secure back-end systems using Java (Java 17+, Spring Boot, etc.).
• Lead design and integration of AI/ML modules into core backend platforms (using APIs, microservices, or embedded inference engines).
• Collaborate with Data Science and ML teams to operationalise AI models (MLOps).
• Champion best practices in software engineering, DevOps, and code quality across the team.
• Evaluate emerging technologies and assess AI tooling/libraries (e.g., Hugging Face, LangChain, TensorFlow, OpenAI).
• Drive performance optimisation of existing services and refactor legacy code as needed.
• Influence product and system design through deep understanding of scalability and AI augmentation.
• Mentor junior and mid-level developers; lead technical design reviews and code walkthroughs.

Key Requirements:

• 10+ years of professional experience in Java backend development.
• Microservices and Kubernetes
• Expert-level skills in Java, Spring Boot, REST APIs, microservices architecture, and asynchronous systems.
• Experience integrating AI/ML features into production systems (e.g., chatbots, NLP, anomaly detection, recommender systems).
• Hands-on exposure to AI frameworks or platforms: OpenAI APIs, Hugging Face Transformers, LangChain, PyTorch/TensorFlow, etc.
• Proficient with CI/CD pipelines, Docker, Kubernetes, and cloud platforms (AWS/GCP/Azure).
• Strong understanding of databases (SQL & NoSQL), distributed systems, and caching mechanisms.
• Proven experience in leading teams, conducting design reviews, and owning production-critical systems.
• Excellent communication skills and ability to work cross-functionally in an Agile environment.

This is 12 months contract position , CAD$105 per hour, 8 hours/20 days per month