Full Stack Engineer

Tekgence Inc; Toronto; Hybrid; CAD 90,000 - 120,000; Full time

Job summary

Tekgence Inc in Toronto is seeking a Full Stack Developer with expertise in Java and AI integration for a hybrid position. This 12-month role will focus on developing high-performance backend services and integrating generative AI capabilities into workflows.

The ideal candidate has over 5 years of experience in Java backend development and a deep understanding of prompt engineering techniques. Join us to work on innovative AI solutions!

Qualifications

• 5+ years of hands-on experience in Java backend development.
• Expertise in Java 11/17+, Spring Boot, and Microservices.
• Strong understanding of prompt engineering techniques.

Responsibilities

• Design, develop, and maintain high-performance backend services using Java and Spring Boot.
• Integrate generative AI capabilities into backend workflows.
• Implement secure API integrations with compliance to enterprise standards.

Skills

Java backend development

Spring Boot

Microservices

REST APIs

SQL and NoSQL databases

Containerization

Cloud platforms (Docker, Kubernetes)

CI/CD and DevOps

Prompt engineering

AI integration

Job description

Full Stack Developer (JAVA + Spring Boot + Angular + AI)

Toronto, ON - Hybrid (4 Days WFO)

12 months

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.
• Implement Retrieval-Augmented Generation (RAG) services.
• Build 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: 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

• 5+ years of hands‑on experience in Java backend development.
• 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 (e.g., 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.
• Prompt templates and 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).