Job Description
Senior Java Backend Developer – Java 17+, Spring Boot, Microservices & GenAI/LLM
Toronto, ON - Hybrid (4 Days WFO)
Experience Required: 7+ years
Role Descriptions:
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
• 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 nonfunctional 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 strong 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 OAuth2.0, JWT, SSL/TLS, and secure API patterns.
• Awareness of data privacy, PII handling, and AI governance in regulated environments (BFSI preferred).
Requirements
Top 3 Required Skills: 1. IBM Financial transaction 2. Payment flow 3. Support Modernization Detailed Job Description: • Design, develop, and maintain applications built on IBM Financial Transaction Manager (FTM) to support core payments processing. • Contribute to the development of payment flows supporting transaction processing. • Build and support integrations between FTM and upstream/downstream systems using enterprise integration patterns. • Participate in the design, development, testing, deployment, and production support. • Troubleshoot and resolve application and integration issues in a complex, regulated environment. • Collaborate with architecture, QA, and operations teams to ensure platform stability, scalability, and performance. • Support modernization initiatives and enhancements to existing payment hub capabilities. • Produce clear technical documentation and participate in code reviews and knowledge sharing.
Senior Java Backend Engineer – GenAI / LLM • Toronto, ON, ca
A leading bank in the Americas seeks an experienced Senior Software Engineer to join their Commodities Technology team in Toronto, Ontario.This role involves maintaining and upgrading software comp... Show more
Iris's Fortune 100 direct client is looking.Please find below Job description and share me your updated resume at.Location: Toronto, ON (Hybrid, 4 days onsite in a week).Bachelor’s degree in Comput... Show more
Harness your skills at Nue as a Senior Java Engineer, focusing on developing large-scale cloud solutions.Engage with modern technologies like AWS and event streaming platforms.Nue seeks a Senior So... Show more
Venn is the fastest-growing B2B fintech in Canada.We're on a mission to transform business banking for Canadian entrepreneurs and are looking to hire A-players interested in disrupting traditional ... Show more
Seeking a Senior Backend Engineer to work on a distributed computing platform, involving coding, design, and production support.Requires backend experience with Go, Python, or Java and AWS. Show more
Senior Java Engineer Agentic AI.Toronto, ON (Hybrid 3 days/week onsite).About The Role We are looking for highly experienced, hands-on Senior Java Engineers (Architects /Technical Leads) with a str... Show more
A software development company in Toronto is seeking an experienced Backend Application Developer to drive the development of database-centric web applications.In this role, you will design and imp... Show more
Senior Backend Engineer sought to design and maintain high-throughput backend services for a crypto platform. Show more
Backend Engineer sought to develop Microservices and APIs using Java, Spring, and SQL. Show more
We are seeking a highly skilled.This role is deeply technical and requires someone who is comfortable spending.The ideal candidate has strong experience with.As a Senior Java Engineer, you will des... Show more
Senior Software Engineer - Java & Data Platforms.Are you a Software Engineer who thrives on solving complex data challenges? We’re looking for a.Databricks, Spark, and Delta Lake.Make key architect... Show more
A software development firm in Toronto is seeking a Senior Java Software Engineer responsible for designing and maintaining high-performance applications using Java and Spring Boot.Candidates shoul... Show more
Movable Ink scales content personalization for marketers through data-activated content generation and AI decisioning.The world’s most innovative brands rely on Movable Ink to maximize revenue, sim... Show more
A leading tech company in Toronto is looking for a skilled developer with over 10 years of experience in JEE and JAVA technologies, and 5 years in mobile solutions for both iOS and Android platform... Show more
Venn is the fastest-growing B2B fintech in Canada.We're on a mission to transform business banking for Canadian entrepreneurs and are looking to hire A-players interested in disrupting traditional ... Show more
Seeking a Senior Backend Engineer to enhance search experience for a ride-sharing platform, focusing on growth and personalization features using Go or Java. Show more
Design and implement backend systems and APIs for AI-powered workflows.Build integrations, optimize performance, and work with various teams. Show more
An innovative company is seeking a Senior Java Gen AI Developer to join their dynamic team in Toronto.This role offers the opportunity to work on cutting-edge Gen AI products utilizing Azure's powe... Show more
We are starting by building the largest, most loved pharmacy business in the world.We are a fast-growing, technology-first startup driven by perfecting the patient and pharmacist experience.Nimble ... Show more
Seeking a Senior Java Engineer for backend development using Java and Spring.Responsibilities include building Kafka services, optimizing performance, and ensuring code quality with automated testi... Show more
