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Astra North (Astra North Infoteck Inc.) is a specialized IT staffing and recruitment process outsourcing (RPO) provider that focuses on supplying talent and managed services to external clients.

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Posted 3w ago

Java Backend Developer – Java (17+), Spring Boot, Microservices

@ Astra North
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Toronto, Ontario, Canada
HybridContract
Responsibilities:designing services, integrating AI, supporting production
Requirements Summary:5+ years Java backend experience with Java 11/17+, Spring Boot, microservices, REST/OpenAPI, containers (Docker/Kubernetes/OpenShift), cloud (Azure/AWS), SQL/NoSQL DBs, CI/CD, LLM/AI integration, and security (OAuth2/JWT).
Technical Tools Mentioned:Java, Spring Boot, Spring MVC, Spring Security, OpenAPI, Swagger, Docker, Kubernetes, OpenShift, Azure, AWS, DB2, PostgreSQL, MongoDB, CI/CD, LLM, Retrieval Augmented Generation (RAG), OAuth 2.0, JWT, SSL/TLS
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Job Description

Java BE Developer – Java Spring Boot, Microservices

Location: Toronto, ON – Hybrid (4 Days WFO)

Key Responsibilities

  • Design, develop, and maintain high-performance backend services using Java (17+), Spring Boot, and Microservices architecture.
  • Build and expose RESTful and event-driven APIs supporting enterprise-scale applications.
  • Integrate Generative AI / LLM capabilities (e.g., text generation, summarization, Q&A, classification) into backend workflows.
  • Design, test, and optimize prompts and prompt orchestration strategies to ensure accuracy, determinism, and performance.
  • Develop AI-aware backend components such as prompt templates and prompt pipelines, Retrieval Augmented Generation (RAG) services, and AI inference orchestration layers.
  • Implement secure API integrations with AI platforms and internal data sources, ensuring compliance with enterprise security standards.
  • Apply prompt versioning, evaluation, and monitoring techniques to improve AI output quality over time.
  • Ensure non-functional requirements including scalability, resiliency, performance, and observability.
  • Contribute to CI/CD pipelines, containerization, and cloud-native deployments.
  • Participate in code reviews, architecture discussions, and technical design decisions.
  • Support production systems and troubleshoot complex backend or AI integration issues.

Required Technical Skills

Core Backend Engineering

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

AI & Prompt Engineering

  • Hands-on experience integrating Large Language Models (LLMs) into backend systems.
  • Strong understanding of prompt engineering techniques including zero-shot, few-shot, and chain-of-thought prompting.
  • Experience with prompt templates, dynamic prompt generation, guardrails, validation, and hallucination reduction.
  • Experience building RAG-based solutions using vector stores and embeddings.
  • Familiarity with AI orchestration frameworks or SDKs (enterprise or open source).
  • Ability to evaluate prompt and model responses for quality, bias, and consistency.

Security & Compliance

  • Experience implementing OAuth 2.0, JWT, SSL/TLS, and secure API patterns.
  • Awareness of data privacy, PII handling, and AI governance in regulated environments (BFSI preferred).