seniorlead java engineer jobs in Toronto

Cognizant Technology Solutions Corporation is seeking a Senior Java Full Stack Developer to design, build, and support scalable enterprise applications and APIs. You will collaborate with architects, product owners, and DevOps teams to deliver robust software using Java, Spring Boot, Angular, and TypeScript, while leveraging AI-assisted development tools to...

Build Java cloud services with strong DevOps expertise at Thomson Reuters in Toronto, using AWS, Spring Boot, and PostgreSQL within a hybrid model.As a Senior Software Engineer, you will design, deploy, and operate scalable cloud-native services. You will own solutions across delivery and production operations while improving reliability, deployment...

Kaseya Careers is seeking a Senior Full-Stack Software Engineer focused on AI-native engineering, Java and React. You will design and implement cloud-based features across backend and frontend, mentor teammates, and help modernize systems with AI-assisted tooling. You will contribute from design to production support, working with AWS/Azure/GCP...

Agilno in Canada is seeking an experienced Senior Java Developer to adapt the application layer from AWS to Microsoft Azure. You will work with our DevOps team, owning the application code, data access and integrations during a contract of up to six months. The role focuses on migrating services, data, and keeping performance stable while collaborating...

Apply Java and counterparty credit risk expertise to Citi Capital Markets technology serving traders, salespeople, and risk managers. This full time senior role supports strategic risk systems.The Lead Java Risk Developer establishes and implements revised application systems alongside Technology teams. You will analyze complex processes, develop programs,...

Cognizant Technology Solutions Corporation is seeking a Senior Java Full Stack Developer to design, build, and support scalable enterprise applications and APIs. You will collaborate with architects, product owners, and DevOps teams to deliver robust software using Java, Spring Boot, Angular, and TypeScript, while leveraging AI-assisted development tools to...

Use strong Core Java expertise to develop event-driven systems and real-time streaming pipelines for a critical Cash Equities platform. This Senior Software Developer position is a 12-month contract based in Toronto, with three office days weekly. The team is building a central data store and distribution layer for trades and orders. You will contribute to...

Build scalable healthcare APIs with Java and Spring Boot at Teladoc Health Canada, supporting virtual care workflows through reliable backend systems.As a Backend Software Engineer, you will design, build, and operate services used across critical healthcare workflows. You will collaborate with senior engineers, product managers, frontend, QA, and platform...

Apply deep Java knowledge to high-performance services and cloud security systems within the company’s Identity Threat Protection team. Work location is not specified.This Staff Software Engineer role calls for eight-plus years of professional development experience and demonstrated technical leadership. You will shape cloud-native products, solve complex...

Astra-North Infoteck Inc. in Toronto, ON is looking for a Senior Full Stack Developer to design, build, and operate modern web applications and resilient backend services using Angular and Java.In a hybrid setup, you will collaborate in Agile teams, shape API design with REST and GraphQL, and drive CI/CD, security, and performance across the full development...

Astra-North Infoteck Inc. in Toronto is seeking a Senior Full Stack Engineer to design, build, and support a cloud-native platform running on Azure Kubernetes Service (AKS). You will work across React/TypeScript front ends, Node.js and Java back-end services, and AI-driven tooling. The role emphasizes modern engineering practices, CI/CD, GitOps,...

Capgemini in Toronto, Canada is seeking a senior full-stack developer to lead the design and development of enterprise apps. You will guide architecture, develop responsive web apps using Angular/React/Vue.js, and build scalable APIs with .NET Core/Java Spring Boot/Node.js.Mentoring and cross-team collaboration are essential, with cloud-native and CI/CD...

Overview Primary Skill - Playwright, Rest Assured, Java, SeleniumGen AI Testing Pioneer: Lead the integration of Gen AI into all phases of testing—from automated test case generation and synthetic data creation to intelligent bug analysis.Full-Stack Validation: Own the quality strategy for Web, Mobile (iOS/Android), and API layers, ensuring a seamless...

Senior Full Stack Engineer – React/TypeScript, Node.js, Java Back-End, AKS Position Summary Seeking a Senior Full Stack Engineer to design, build, and support a cloud-native, microservices-based platform running on Azure Kubernetes Service (AKS). The role requires strong full stack expertise across React/TypeScript front ends, Node.js and Java back-end...

Build AI-powered backend capabilities with Java, Spring Boot, and LLM orchestration for scalable, resilient banking application ecosystems.This Senior Java Developer role connects high-scale microservices architecture with GenAI for a major financial services client. You will build intelligent automation, Retrieval-Augmented Generation, vector database...

At Lyft, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. Lyft is looking for experienced software engineers from a scope of disciplines. We are growing our team with people who want to build, improve and incorporate technologies that make the lives...

Use Java, concurrency expertise, and database optimization to strengthen scalable SaaS systems. Investigate production performance across application, cache, database, and edge layers. As a Senior Software Engineer, you will diagnose end-to-end bottlenecks affecting latency, throughput, and capacity. The role requires relational database knowledge,...

Job Description Job DescriptionJob Title: Senior Software Engineer - JavaLocation: Toronto, ON - Hybrid (2-3 Days WFO)Duration: 06-12 MonthsHourly Pay Rate: 60 CAD/hr.Job Description:We are seeking a Senior Software Engineer to enhance a cross-asset order and position management system. The engineer will design and build robust, scalable systems that support...

Job Description Job DescriptionJob Title: Java Lead Engineer / Architect – Agentic AI Location: Toronto, ON Employment Type: Full-Time Contract Job Summary We are seeking a highly experienced Java Lead Engineer / Architect to design and build next-generation distributed platforms focused on edge computing, backend services, and AI/ML enablement. This is a...

Senior Full Stack Engineer – React/TypeScript, Node.js, Java Back-End, AKS Position Summary Seeking a Senior Full Stack Engineer to design, build, and support a cloud-native, microservices-based platform running on Azure Kubernetes Service (AKS). The role requires strong full stack expertise across React/TypeScript front ends, Node.js and Java back-end...