Let's start with the role

You will join an autonomous Agile team and work closely with the Product Owner, Agile Delivery Lead, Automation Testers, and other Software Engineers to create a competitive advantage for Kaizen and offer a unique online experience to our customers. Besides being part of the Agile team, you will work closely with talented backend professionals within the Backend Chapter. 🙌

Senior Software engineers in Kaizen are responsible for a multitude of projects, from our customer-facing websites and mobile applications to our admin and internal tools and backend services, most of them withstanding high volume / traffic.

• Assume full responsibility for our applications on an engaging development journey.
• Create new solutions and see them through, from conception to production;
• Turn requirements into simple and sophisticated technological systems. Our large scale, highly available infrastructure is at the core of that challenge;
• Play a central role on Design, build, and maintain efficient, reusable, and reliable code;
• Research new technologies to find new and efficient ways to solve day to day challenges;
• Ship high-value features quickly;
• Challenge the status quo and improve the team and product;

Most of our sites and services are written in in C# / ASP.NET and new services are written in .NET Core. New applications use vue.js or Angular in the front-end while older ones use server-rendered (Razor) views in combination with jQuery. Microsoft Orleans enables our scalable and robust distributed applications. MS SQL Server is used for most of our storage needs, but also Redis and ElasticSearch are used when it makes sense to do so. RabbitMQ is our go-to message broker. We use Gitlab for code versioning and CI, and the Atlassian stack for tickets and documentation.

What you'll bring

• At least 4 years of experience developing production-level software using .NET Core;
• Proficient in C# and MVC;
• Experience with Testing/Metrics Monitoring/Logging on a large scale distributed system;
• Experience with Microservices architecture;
• Experience with asynchronous flows using message brokers;
• Good understanding of basic web technologies, such as HTTP, REST, etc.;
• Practical knowledge of algorithms and design patterns;
• Passionate about delivering high-quality code;
• Fluent in English, both oral and written.

Nice to have:

• Expertise in concurrency, multi-threading, and event-driven architecture;

Kaizen Gaming Perks

• 🕑 Hybrid way of working & remote options;
• 🏃 A buddy will support you with your onboarding;
• 💸 Competitive pay & bonus scheme;
• ⭐Developmental 360° feedback framework;
• 💰 Monthly meal allowance;
• 👩‍⚕️ Private health insurance for you and your family;
• 📚 Unlimited access to Udemy & continuous training;
• 👨‍👩‍👧‍👦 Family Support.
• #LI-Remote

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.