Senior Mainframe Software Engineer Jobs in Toronto, ON

Amazing Career Moments Happen Here 

The best work happens when smart people move fast, together. At Applied, we've spent 40+ years building technology that solves real problems for insurance professionals, and we're not slowing down. We're pushing what's possible in Insurtech and doing it inside a culture built on trust, inclusion, and growth. 

The Role at a Glance 

Role: Senior Software Engineer (Golang, React)

Team: Employee Benefits 

Location: Remote

Opportunity for Impact 

We're looking for a Software Enginee/ Senior Software Engineer (Golang, React) to join our Employee Benefits team and make a real difference for the people who depend on our products every day. You will be developing and maintaining robust web applications and micro services using React and Golang.

As a Software Engineer/Senior Software Engineer, you will collaborate with Architects, Product Owners, and members of a Scrum team to deliver high quality technical solutions. Here, you'll have a voice in how the work gets done, room to try things differently, and the trust to move it forward. 

What You'll Do:

• Support the team with delivery by sharing comprehensive feedback during code reviews and guidance with complex technical problem solving
• Contribute to technical decisions by identifying opportunities and risks
• Share knowledge of software development languages and frameworks as well as  testing strategies 
• Support with continuous improvement of internal processes and documentation to champion a principles-based approaches to design, implementation, and testing 
• Collaborate with other teams to identify and develop integration solutions 
• Champion engineering best practices in the areas of writing code,  unit testing, E2E  testing, performance  testing , CI/CD, observability, and documentation while using available AI tools
• Identify, diagnose, and resolve performance bottlenecks, reliability issues, and security vulnerabilities
• Collaborate with product managers and designers to translate business requirements into well-scoped, technically sound solutions
• Mentor junior and mid-level engineers through pairing, code reviews, and knowledge-sharing sessions

We're Excited to Learn More About You - Software Engineer

If this role sounds like the right next move, we'd love to hear from you. You might bring: 

• 3+ years of web development experience creating enterprise software using React  
•  5 + years of professional experience building web applications and web services  
•  Experience with Golang, C#, TypeScript/JavaScript, Node JS, Kubernetes, PostgreSQL/SQL Server, GCP and Visual Studio Code 
•  Experience in implementing and consuming GRPC and RESTful services 
•  Knowledge of Agile frameworks, ideally Scrum, and tools like Jira and Confluence  
•  Understanding of testing best practices  
•  Understanding of DevOps and CI/CD with knowledge of Kubernetes 
•  Knowledge of Cypress and RestSharp to develop and maintain Automated End to End Testing 
•  Ability to communicate in a team-oriented environment to clarify requirements and deliver solutions within committed timelines  
•  Ability to provide feedback on coding standards through code reviews  
•  Proven technical abilities, troubleshooting skills, and research abilities  
•  Knowledge of using GIT for commits, code reviews, merge conflicts and release tags 
• Comfortable leveraging AI-assisted development tools (e.g., Claude Code) to accelerate delivery - extensive usage of these tools is expected and encouraged
• Bachelor's Degree in Computer Science, MIS, or CIS, or equivalent work experience
  • We proudly support and encourage people with military experience, as well as military spouses, to appl

 For the Senior Software Engineer,  you may also have: 

• 8+ years of experience in software engineering, including experience providing guidance and support to members of the team  
• Demonstrated experience working across software development languages and frameworks, such as C#, .NET, OR Golang, React, as well as JavaScript or TypeScript
• Passion for continuously expanding knowledge of programming and web development while driving toward principles-based approaches for design, implementation and testing 
• Advanced knowledge of experience with modern test strategies and quality gating policies within CI/CT/CD pipelines
• High proficiency with UI and API Testing, with frameworks such as RestSharp and Cypress 
• Advanced communication skills, with the ability to distill complex concepts to support others with complex problem solving 
• Demonstrated ability to advance discussions, debates, and reviews on coding and design elements while contributing to positive and constructive communication across the team  
• Track record of breaking down ambiguous problems, making pragmatic tradeoffs, and delivering high-quality software on schedule
• Experience writing unit, integration, and end-to-end tests as a first-class part of the development process
• Prior experience in an Agile/Scrum environment with a track record of consistent sprint delivery

 Talent shows up in a lot of different ways, and we mean that. We welcome candidates from all backgrounds and experience levels, including military members and their spouses and those without a traditional degree or tech background. If this role speaks to you, apply. 

Why You'll Like Working Here 

Our people-first culture means you're seen, supported, and set up to grow. We work across flexible models because we trust our teams to deliver, not just show up. You'll collaborate with people who care about the work and each other, and you'll have leaders who are invested in where you're headed.  

How We'll Support You 

We invest in the whole person, not just the role. Our benefits and resources are built to support your health, your time, and your life outside of work: 

• Medical, Dental, and Vision Coverage 

• Holiday and Vacation Time 

• Health & Wellness Days 

• A Bonus Day for Your Birthday 

Compensation Transparency 

Our targeted starting base salary in the United States for this position ranges from USD 70K - USD 120K for the Software Engineer and USD 125K - USD 150K for the Senior Software Engineer. To determine a new team member's starting pay, we consider a variety of factors, including someone's depth, breadth, and variety of experience, skills, and responsibilities. Depending on the role, team members may also be eligible to participate in additional compensation plans such as bonus and commission. 

Your Security Matters: Our candidates' personal information and online safety are top of mind for us. At Applied, we proactively protect your personal information and only communicate with candidates via a secure @appliedsystems.com email or through our official careers portal. Recruiters will never request payments, ask for financial account information or sensitive information like social security numbers. 

EEO Statement 

Applied Systems is proud to be an Equal Employment Opportunity Employer. Diversity and Inclusion is a business imperative and is a part of building our brand and reputation. At Applied, we don't discriminate, and we are committed to recruit, develop, retain, and promote regardless of race, religion, color, national origin, sexual orientation, gender identity, disability, age, veteran status, and other protected status as required by applicable law. 

#LI-Remote

#LI -US