Senior Full-Stack Software Engineer — AI-Native Engineering, Java & React

About Kaseya

Kaseya is the leading provider of AI-powered IT management and cybersecurity software serving Managed Service Providers (MSPs) and internal IT organizations worldwide. Our comprehensive platform helps organizations efficiently manage secure and automate their IT environments driving operational efficiency and long-term business success.

Backed by Insight Partners a leading global software investor Kaseya has experienced sustained double-digit growth and continues to expand its global footprint. Today Kaseya supports customers in more than 20 countries and manages over 15 million endpoints worldwide.

Founded in 2000 Kaseya was built by builders - and were still building. We look for people who create rather than wait who see a hard problem and lean in and who treat challenges as raw material. At Kaseya everyone plays a role in shaping the future of IT: whether youre in engineering product sales marketing customer support or operations your work helps protect defend and optimize IT environments across the globe.

Were building teams that grow perform and make an impact. If youre driven by the itch to make things better - a product a process a career - youll fit right in.

At Kaseya we dont just raise the bar. We build it.

Senior Full-Stack Software Engineer AI-Native Engineering Java & React

Location: Toronto Canada
Employment Type: Full-time

Why Kaseya

Kaseya builds IT management and cybersecurity solutions that help organizations operate securely and efficiently. Were modernizing how we design build test and operate software by combining strong engineering fundamentals with AI-native development practices.

Join a team where youll build customer-facing SaaS applications solve complex engineering problems and use AI-assisted development tools to improve quality and delivery.

The Role

Were looking for a Senior Full-Stack Software Engineer who brings hands-on expertise in Java Spring React and TypeScript along with experience building and operating cloud-based applications.

Youll own complex features across backend services and frontend experiencesfrom technical design through implementation testing deployment and production support. Youll contribute to architecture decisions modernize existing systems incrementally and mentor engineers through code reviews and technical collaboration.

AI-assisted engineering is part of how we work. You should be comfortable using tools such as Claude Code or equivalent coding agents throughout the development lifecycle while taking responsibility for the correctness security and maintainability of the result.

What Youll Do

• Deliver full-stack capabilities: Design and build Java/Spring services and React/TypeScript interfaces that solve customer problems.

• Build reliable backend systems: Develop APIs integrations data models and distributed or event-driven workflows for cloud-based SaaS applications.

• Create maintainable frontend experiences: Build responsive interfaces with thoughtful component design state management accessibility and performance.

• Own features through production: Take responsibility for technical design implementation automated testing release monitoring and ongoing support.

• Apply AI throughout development: Use coding agents for codebase exploration solution planning implementation testing debugging documentation and refactoring. Validate generated changes through review testing and engineering judgment.

• Modernize existing software: Improve established systems through incremental migrations stronger test coverage and practical architecture improvements.

• Strengthen operational quality: Improve CI/CD observability security performance and deployment reliability. Help investigate incidents and prevent recurrence.

• Provide hands-on technical leadership: Contribute to design discussions review code mentor engineers and collaborate with product quality and platform teams.

What Youll Bring

• 7 years of software engineering experience building and supporting production SaaS or enterprise applications.

• 4 years of production Java and Spring experience along with hands-on experience delivering frontend applications using React and TypeScript.

• Experience designing APIs data models integrations and distributed or event-driven systems.

• Experience building and operating applications on AWS Azure or GCP including automated delivery and production support.

• Practical experience using AI-assisted coding tools for implementation testing debugging refactoring documentation or codebase analysis.

• Strong engineering judgment: the ability to explain trade-offs diagnose problems and deliver maintainable solutions.

• Demonstrated ownership of complex features and the ability to collaborate effectively across engineering and product teams.

Experience That Would Be Valuable

• Spring Boot Spring Cloud GraphQL Hibernate JDBC Kafka or comparable technologies.

• React application architecture reusable components state management accessibility or performance optimization.

• Relational databases such as PostgreSQL MySQL SQL Server or Oracle.

• Microservices Docker Kubernetes or infrastructure as code.

• Incremental modernization of applications built with Apache Stripes JSP Servlets or other established Java web technologies.

• Improvements to automated testing observability reliability or production operations.

• Deeper experience with Claude Code or equivalent agentic development tools including repeatable workflows for planning implementation testing and review.

Equal Opportunity

Kaseya provides equal employment opportunity to all employees and applicants without regard to race religion age ancestry gender sex sexual orientation national origin citizenship status physical or mental disability veteran status marital status or any other characteristic protected by applicable law.

Additional information
Kaseya provides equal employment opportunity to all employees and applicants without regard to race religion age ancestry gender sex sexual orientation national origin citizenship status physical or mental disability veteran status marital status or any other characteristic protected by applicable law.