senior full stack software developer jobs in Toronto

Senior. Location: Toronto, ON - hybrid, 2 days onsite. Red Pico is hiring a Senior Full Stack Developer to take ownership of backend architecture and development for end-user self-service and access visibility solutions. This role combines architectural responsibility with hands‑on development of APIs, scripts and system integrations, with a strong focus...

Mosaic Clinical Technologies is seeking a Senior Full Stack Developer to advance innovative imaging solutions. This hybrid role in Toronto involves cloud-native app development and AI integration with healthcare systems. As a key member of the team, you will design and maintain scalable infrastructures, develop APIs, and optimize AI pipelines. This position...

Build secure enterprise applications as a Senior Full Stack Developer at the University of Guelph-Humber in Toronto. Apply SQL and PHP across academic systems.This full-time position supports the university’s academic and administrative operations. You will develop databases, backend services, integrations, data pipelines, frontend features, and...

Lead enterprise full stack development in Toronto with Java Spring Boot, Angular, React, Vue.js, and technical architecture expertise. Build scalable applications for Capgemini.Capgemini seeks an experienced Full Stack Java Developer with 10+ years of software development or full stack experience. You will guide enterprise application design, support...

Location: Toronto, ON (Hybrid) Company: Cogency Employment: Full-Time About Cogency Cogency is a Toronto-based consulting and technology services firm specializing in enterprise digital transformation across the Banking, Financial Services, and Insurance (BFSI) sector. We partner with leading organizations to modernize platforms, enhance operational...

Build AWS-based applications in Toronto’s hybrid Senior Full Stack Developer position, combining backend architecture with hands-on API development. Work onsite two days weekly while shaping secure, scalable solutions.Red Pico seeks a Senior Full Stack Developer to own backend architecture for self-service and access visibility solutions. You will develop...

Build AI tools in Toronto as a Senior Full Stack Developer using responsive interfaces, secure back-end systems, and cloud architecture. Work full time.RBC seeks a Senior Full Stack Developer to guide ideas from concept through functional prototype. You will collaborate with business SMEs, architects, designers, product managers, and engineers. The work...

Job TitleSenior Full Stack Developer – JavaLocationToronto, ON (4 days on-site)Experience Level7+ YearsEmployment TypeFull-TimeAbout the RoleWe are seeking a highly skilled Senior Full Stack Developer with strong expertise in both front-end and back-end Java development. You’ll be part of a global team (Toronto, New York, London) working on...

The Klick Group —comprising Klick Health (including Oxford PharmaGenesis, Klick Katalyst, and btwelve), Klick Media, Klick Applied Sciences (including Klick Labs), and Klick Consulting—is an ecosystem dedicated help life sciences brands achieve their full potential through best-in-class marketing and advertising, media, medical affairs and...

Senior Full Stack Java Developer work follows a hybrid schedule, combining onsite delivery three days weekly with two days from home.This senior assignment supports large, complex, legacy applications using Java, J2EE, Jakarta, WebSphere, and Tomcat. The work spans sustenance analysis, technical design, implementation, testing, security, databases,...

Lead technical innovation as a Senior Full Stack Developer specializing in Java. Engage with cross-functional teams to design and deploy database applications, ensuring optimal solutions and compliance. This role requires collaboration with Systems Architects and Software Team Leads to navigate complex projects and enhance existing applications. You'll be...

Support Ontario Health’s Drug Formulary and Web Transformation projects as a Senior Software Developer working hybrid in Toronto, Ontario. Build secure healthcare software across cloud platforms.This senior developer role combines .NET, Python, web APIs, databases, and deployment workflows. You will support applications serving patients and healthcare...

Drive innovative web solutions as a Senior Full Stack Software Developer with the Ministry of Public and Business Service Delivery in Toronto. This onsite role demands Java expertise and modern front-end skills in a dynamic Agile setting. Join the Community Services Cluster, engaging in an 11-month contract to develop and maintain enterprise applications at...

TitleSoftware Developer - Full StackDescription Demonstrated experience designing, developing and integrating AI-enabled applications, including Large Language Models (LLMs), AI agents, agent-based workflows, document processing solutions, and human-in-the-loop review and approval processes. This role will support the development of the Curriculum AI...

Elevate digital innovation as a Senior Full-Stack Developer focused on AI at Appnovation. Leverage top design tools to create impactful applications. As part of Appnovation’s team, you will turn creative ideas into functioning applications, primarily focusing on AI-driven design and development. With a strong proficiency in frontend frameworks, your role...

Make a meaningful impact in health technology as a Senior Full Stack Developer at VITALL. Drive the software lifecycle using your expertise in both front-end and back-end development. In this senior role, you will lead the design, creation, and enhancement of scalable software solutions at VITALL. Collaborate with a cross-functional team to oversee the...

Build tested Java applications as a Senior Software Developer, using Spring Boot, REST APIs, and full stack development expertise.This senior developer translates technical specifications into working applications through analysis, design, coding, compilation, maintenance, and unit testing. The work includes troubleshooting software packages, supporting...

Build secure, scalable software with C#, ASP.NET MVC, and REST APIs as a Senior Full Stack Developer in BDO’s hybrid downtown Toronto role. BDO seeks a skilled Full Stack Developer with strong Microsoft .NET expertise for multi-tier application development. You will work with C#, VB.NET, ASP.NET MVC, Webforms, relational databases, and RESTful services....

Develop Baselane’s banking platform remotely first as a Senior Full Stack Engineer using React, Node.js, GraphQL, PostgreSQL, and AWS.Baselane is building financial services and automated tools for individual landlords and real estate investors. In this senior engineering role, you will own production outcomes, troubleshoot features, and improve...

Build scalable enterprise applications onsite in Toronto using Java, Spring Boot, React, and Angular across full-stack delivery. Lead secure APIs and responsive interfaces. This senior contract role spans application architecture, technical delivery, and full-lifecycle software development. You will connect business requirements with backend architectures,...