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Acestack
Java Backend developerAcestack • Toronto, ON, Canada
Java Backend developer

Java Backend developer

Acestack • Toronto, ON, Canada
Il y a 1 jour
Type de contrat
  • Temps plein
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Description de poste

Java Backend developer

Job Type: Full Time
Location: Toronto, ON
Work Model: Onsite / 4 Days

Primary Skills: Java & Spring Boot, Microservices & REST APIs, Generative AI & Prompt Engineering

Job Description

We are seeking an experienced Java Backend Developer to design, develop, and maintain high-performance backend services using Java 17+, Spring Boot, and Microservices architecture. The role also focuses on integrating Generative AI and LLM capabilities into enterprise backend workflows.

Key Responsibilities

  • Design, develop, and maintain scalable backend services using Java 17+, Spring Boot, and Microservices.
  • Build RESTful and event-driven APIs for enterprise-scale applications.
  • Integrate Generative AI/LLM capabilities such as text generation, summarization, Q&A, and classification.
  • Design and optimize prompts and prompt orchestration strategies for accuracy, consistency, and performance.
  • Develop AI-aware backend components including prompt templates, prompt pipelines, RAG services, and AI inference orchestration layers.
  • Implement secure integrations with AI platforms and internal enterprise data sources.
  • Apply prompt versioning, evaluation, monitoring, guardrails, and validation techniques.
  • Ensure scalability, resiliency, performance, security, and observability of backend services.
  • Contribute to CI/CD pipelines, containerization, and cloud-native deployments.
  • Participate in code reviews, architecture discussions, and technical design decisions.
  • Troubleshoot complex backend and AI integration issues in production environments.

Required Technical Skills

Core Backend Engineering

  • 5+ years of hands-on experience in Java backend development.
  • Strong expertise in Java 11/17+, Spring Boot, Spring MVC, and Spring Security.
  • Solid experience with Microservices, REST APIs, and API design using OpenAPI/Swagger.
  • Experience with Docker, Kubernetes, OpenShift, and cloud platforms such as Azure/AWS.
  • Strong knowledge of SQL and NoSQL databases including DB2, PostgreSQL, and MongoDB.
  • Experience with CI/CD, DevOps practices, and automated testing.

AI & Prompt Engineering

  • Hands-on experience integrating Large Language Models (LLMs) into backend applications.
  • Strong understanding of prompt engineering techniques including zero-shot, few-shot, and chain-of-thought prompting.
  • Experience with prompt templates, dynamic prompt generation, guardrails, and output validation.
  • Knowledge of Retrieval-Augmented Generation (RAG), AI orchestration, prompt evaluation, and monitoring.

Preferred Qualifications

  • Experience building AI-powered enterprise applications.
  • Knowledge of event-driven architecture and messaging platforms.
  • Experience with cloud-native application development.
  • Strong understanding of secure enterprise API and AI integrations.
  • Excellent problem-solving, communication, and collaboration skills.

Job Details

  • Job Type: Full Time
  • Location: Toronto, ON
  • Work Model: Onsite / 4 Days
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Java Backend developer • Toronto, ON, Canada

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