Design and develop full-stack features, focusing on backend systems with some frontend work, while modernizing applications and integrating AI tools.
We are searching for a Senior .NET Developer on behalf of one of our clients, a successful and growing property & casualty insurance software company. The client develops proprietary enterprise solutions that manage the full operational suite for insurance carriers, their agents, and customers. This is an exciting opportunity to work with both established and cutting-edge Microsoft-based technologies, including an active migration to .NET Core and integration of AI tools into real development workflows.
Responsibilities
- Design, develop, and maintain full-stack features across backend services, APIs, frontend, and database layers
- Work primarily on backend systems (~80%) with some frontend responsibilities (~20%)
- Contribute to and modernize legacy VB.NET MVC applications while supporting the migration to .NET Core
- Build and integrate AI-assisted development workflows using tools such as ChatGPT, Claude, or similar technologies
- Collaborate directly with clients to gather requirements, deliver enhancements, and provide technical solutions
- Write and optimize SQL queries, stored procedures, and database interactions in SQL Server
- Participate in Agile development processes using tools like JIRA and Git/TFS
Requirements
- 7–8+ years of full-stack development experience, with the ability to independently own features end-to-end
- Strong hands-on experience with VB.NET and C#
- Solid command of ASP.NET MVC architecture — controllers, backend integration, and request lifecycle
- Proficiency in JavaScript, jQuery, and Bootstrap
- Strong SQL Server and T-SQL skills, including stored procedures and query optimization
- Experience with TFS and Visual Studio 2019+
- 1–2+ years of hands-on experience using AI tools in a real development workflow (ChatGPT, Claude, OpenWebUI, or similar)
- Proven ability to work directly with clients, gathering requirements and translating them into technical solutions
- Self-directed, mature, and comfortable working with minimal supervision
- Familiarity with Agile methodologies and tools like JIRA
Nice to Haves
- Experience migrating legacy applications to .NET Core
- Familiarity with cloud environments, particularly Azure
- Exposure to agentic coding workflows, MCP servers, or prompt engineering for production use cases
- Familiarity with infrastructure such as Windows Server, Hyper-V, or on-premise data centers
- Prior experience in enterprise software development, ideally within insurance or financial systems
If you are a seasoned .NET developer who thrives in a client-facing, hands-on role and wants to work at the intersection of legacy modernization and emerging AI technologies, we'd love to hear from you.
Similar Jobs
Cloud • Security • Software • Cybersecurity • Automation
Designs, operates, and improves production Kubernetes platforms across cloud environments. Manages ArgoCD GitOps workflows, Terraform infrastructure, CI/CD integrations, platform reliability, observability, security controls, and developer enablement. Collaborates with application teams to onboard services, create self-service tooling and documentation, respond to incidents, and improve platform availability and performance.
Top Skills:
ArgocdAWSAzureBashCiliumCrossplaneDnsExternal Secrets OperatorGCPGithub ActionsGitlab CiGitopsGoGrafanaHelmIngressIstioKubernetesKyvernoLinkerdLoad BalancingLokiOpa/GatekeeperOpentelemetryPrometheusPythonSealed SecretsService MeshTektonTerraformVault
Cloud • Information Technology • Productivity • Security • Software • App development • Automation
Build and operate end-to-end full-stack features for Loom billing, subscriptions, integrations, and platform migrations. Develop responsive React interfaces, scalable backend APIs and microservices, payment and identity integrations, and reliable cloud-based systems. Responsibilities include observability, monitoring, testing, code reviews, documentation, security, performance optimization, and participation in Agile ceremonies and technical design reviews.
Top Skills:
AWSBitbucketCi/CdConfluenceCypressDockerGitJavaJavaScriptJestJIRAMicroservicesMochaMySQLNode.jsPostgresPythonReactRest ApisTypescript
Blockchain • eCommerce • Fintech • Payments • Software • Financial Services • Cryptocurrency
Own and grow the Toronto sales territory through extensive in-person outreach, business visits, live demos, partnerships, referrals, and full-cycle deal closing. Build pipeline, sell Square’s software and hardware to restaurants, retailers, and service businesses, maintain Salesforce activity and forecasts, support onboarding, and consistently exceed quota. The role requires field sales experience, reliable transportation, and residence in the assigned market.
Top Skills:
Payment Processing TechnologySalesforce
What you need to know about the Toronto Tech Scene
Although home to some of the biggest names in tech, including Google, Microsoft and Amazon, Toronto has established itself as one of the largest startup ecosystems in the world. And with over 2,000 startups — more than 30 percent of the country's total startups — Toronto continues to attract new businesses. Be it helping entrepreneurs manage their finances, simplifying business operations by automating payroll or assisting pharmaceutical companies in launching new drugs, the city's tech scene is just getting started.
