Senior Java Software Engineer

Iris's Fortune 100 direct client is looking for Senior Java Developer. Please find below Job description and share me your updated resume at [email protected] . Position: Senior Java Developer Location: Toronto Ontario Key Responsibilities: Design, develop, and maintain low-latency, high-throughput Java applications using Java 17+ while adhering to OOP principles, SOLID principles, and industry-standard design patterns. Build scalable and resilient backend services using Spring Boot and Spring Framework, ensuring optimal performance, maintainability, and security. Develop highly concurrent systems utilizing multithreading, thread pools, synchronization mechanisms, locks, atomic operations, and the java.util.concurrent framework. Analyze and optimize application performance by identifying and resolving race conditions, deadlocks, memory leaks, garbage collection issues, and latency bottlenecks. Design and implement efficient database solutions, including complex SQL queries, indexing strategies, transaction management, and query performance tuning across Oracle, MySQL, or SQL Server. Develop event-driven and batch processing solutions using Spring Data, Spring Batch, Spring Integration, and transaction management frameworks. Work extensively in Linux/Unix environments, performing system administration tasks, shell scripting, process monitoring, troubleshooting, and performance analysis. Build and maintain CI/CD pipelines using Jenkins, enabling automated build, testing, deployment, and release management through Pipeline-as-Code (Jenkinsfiles). Collaborate with cross-functional development teams using Git-based version control systems, following branching strategies, code reviews, merging, rebasing, and repository management best practices. Monitor and optimize application performance across infrastructure, JVM, database, and network layers to meet stringent SLA, throughput, and response-time requirements. Integrate AI/ML capabilities into enterprise applications by supporting model deployment, inference workflows, data preprocessing, and production integrations where applicable. Participate in architecture discussions and code reviews, contributing to the design of high-performance distributed systems with a focus on scalability, reliability, observability, and operational excellence. About Iris Software Inc. With 4,000+ associates and offices in India, U.S.A. and Canada, Iris Software delivers technology services and solutions that help clients complete fast, far-reaching digital transformations and achieve their business goals. A strategic partner to Fortune 500 and other top companies in financial services and many other industries, Iris provides a value-driven approach - a unique blend of highly-skilled specialists, software engineering expertise, cutting-edge technology, and flexible engagement models. High customer satisfaction has translated into long-standing relationships and preferred-partner status with many of our clients, who rely on our 30+ years of technical and domain expertise to future-proof their enterprises. Associates of Iris work on mission-critical applications supported by a workplace culture that has won numerous awards in the last few years, including Certified Great Place to Work in India; Top 25 GPW in IT & IT-BPM; Ambition Box Best Place to Work, #3 in IT/ITES; and Top Workplace NJ-USA.

Design and develop low-latency, high-throughput Java applications using Spring Boot and concurrent programming. Maintain CI/CD pipelines and optimize application performance across JVM, database, and network layers.

Requires expertise in Java 17+, SOLID principles, and event-driven architectures. Proficiency in SQL database tuning, Linux system administration, and Git-based version control is essential.

• MySQLPreferred
• SQLPreferred
• CI/CDPreferred
• Spring BootPreferred
• GitPreferred

Identified from the job description. Confirm important requirements above.

• Java 17+
• Spring Boot
• Spring Framework
• Multithreading
• SQL
• Oracle
• MySQL
• SQL Server
• Spring Batch
• Linux/Unix
• Shell Scripting
• Jenkins
• CI/CD
• Git
• AI/ML Integration
• Distributed Systems

• Software
• Technology
• Engineering
• Finance & Accounting
• Consulting

Minimum experience

5+ years

Apply by

Sep 19, 2026

Posting language

English

Working hours

40 hours per week

Seniority

Mid-Senior level

Application method

Direct apply is available