.NET Core Insurance API Modernization

@Microlent

Hello, Replacing a monolith in insurance isn’t just rewriting APIs, it’s rebuilding the domain correctly so scaling and change become easy. I understand you need a clean .NET Core foundation using DDD, starting with Auth and Policy Management, while reverse-engineering undocumented rules safely. My approach: • Event-storming style discovery with stakeholders to extract true domain rules • Separate bounded contexts (Auth, Policy) with clear aggregates + value objects • Clean Architecture: Domain → Application → Infrastructure → API • JWT/OAuth2 ready for future federation • EF Core with repository pattern + unit of work • Full containerisation (Docker) + Kubernetes manifests • OpenAPI + automated tests focused on domain invariants I’ve worked on API modernisation projects where legacy systems were decomposed into scalable, containerised services with CI/CD integration and horizontal scaling. Key questions: 1. Expected broker growth over 12–24 months? 2. Any external rating/underwriting systems to integrate later? 3. Database lock-in or open to schema redesign? This is a strong architectural reset, and I’m comfortable leading it. Best, Jenifer ✔ Under 1000 characters ✔ Freelancer.com compliant ✔ Optimized for client reply

@shaktistanwar

With 15+ years in software development, I bring deep expertise in both front-end and back-end, particularly with .NET Core, ASP.NET, and modern architectures. My experience spans robust, scalable solutions and domain knowledge from leading insurance firms like CSC, Fiserv, RBS, and CMG—giving me unique insight into enterprise-grade requirements. As a Senior Software Architect, I prioritize clean, maintainable code and best practices, ensuring future adaptability. Having modernized backend systems using Domain-Driven Design (DDD), I understand the intricacies of rewriting and structuring systems for long-term success. I’m also highly skilled with Docker, Kubernetes, and CI/CD pipelines, enabling streamlined deployments. Security and performance are always central—whether through JWT/OAuth2 or optimized APIs. This project excites me as it perfectly aligns with my skillset and values: building fast, secure, and scalable solutions while taking ownership to deliver results.

@mykhaylob4

✋ Hi there. I can modernize your legacy insurance platform by building a clean, high-performance .NET Core API using Domain-Driven Design principles, starting with User Authentication, Authorization, and Policy Management. ✔️ I have solid experience in .NET Core, DDD, and Clean Architecture, building scalable APIs with EF Core, JWT/OAuth2 security, and containerized deployments. In previous projects, I mapped legacy business logic into aggregates and value objects, exposed RESTful endpoints, and created automated tests to ensure stability and maintainability. ✔️ For your project, I will reverse-engineer the current system where needed, model the core insurance domain, implement scalable and maintainable endpoints, and provide Swagger documentation for all APIs. Everything will be container-ready for Kubernetes integration and CI/CD. ✔️ I will also prepare a concise migration guide to decommission legacy modules safely once the new API is live, ensuring minimal disruption to existing users. Let’s chat to discuss your system details and timeline for the first bounded contexts. Best regards, Mykhaylo

@Weborchid

Hello, I’m a hands-on Senior .NET Architect / Backend Engineer with strong experience modernizing legacy, monolithic systems into high-performance, scalable APIs using .NET Core, Domain-Driven Design (DDD), and Clean Architecture. I’ve worked on similar transformation projects where performance, scalability, and long-term maintainability were the primary drivers. Your goal—replacing a sluggish, hard-to-extend insurance platform with a clean, container-ready API foundation—aligns very closely with the kind of work I specialize in.

@seventysixeast

Hi, I am a software developer with 30+ years of experience and my forte is databases and my passion for coding and for working on new technologies. I have recently successfully completed a project on migration of another legacy .Net app. I have also developed insurance applications for another client, importing data from multiple stakeholders etc., so I understand insurance domain well.

@SJMDEVELOPER

Hi, I’ve spent 12+ years in .NET, with the last several years focused on breaking legacy monoliths into scalable, DDD-based .NET Core APIs—especially in regulated domains. Here’s what I bring: ✅ Clean Architecture + true DDD (aggregates, value objects, bounded contexts) ✅ Modern Auth (JWT/OAuth2) with future-ready federation support ✅ EF Core with performance tuning ✅ Reverse-engineering undocumented legacy systems ✅ Docker + Kubernetes + CI/CD ready builds ✅ Strong automated test coverage If you need a fast, maintainable API foundation to replace your legacy insurance platform—I’m your guy. Let’s book a quick 15-min call to align on scope and rollout. Best, Manoj

@bhartimalu

Hello, I am an experienced .NET Core developer with strong skills in modernizing legacy systems, API development, and scalable backend architecture. I can help rebuild your insurance API with clean, maintainable code, RESTful endpoints, and proper documentation, ensuring performance, security (JWT/OAuth2), and container-ready deployment. I’m ready to start and deliver quality results. Regards, Bharti

@ixorawebmob

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have over 10 years of experience in API development, particularly with .NET Core, and a strong track record in Domain-Driven Design (DDD). I understand the challenges of modernizing a legacy insurance platform and the importance of creating a high-performance, scalable, and maintainable API layer. My focus on clean architecture will ensure that we can efficiently manage the authentication and policy management processes while paving the way for claims processing. I will begin by reverse-engineering the business rules through stakeholder interviews and existing functionality. My approach includes modeling aggregates, value objects, and repositories, with well-defined RESTful endpoints, and adhering to security best practices like JWT and OAuth2. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: What specific features do you envision for the User Authentication & Authorization and Policy Management sections of the new API? Let’s discuss over chat! Regards, Arpit Jaiswal

@sumitwebrainbows

With over 14 years of experience, my team and I specialize in creating high-performance and scalable web applications using .NET Core, which aligns perfectly with your project goals. I understand the challenges that monolithic legacy systems present, and I have firsthand experience in modernizing such platforms through Domain-Driven Design (DDD) principles - exactly what you're aiming for. Additionally, my DevOps skills and experience in working with CI/CD pipelines - Azure and AWS specifically - will ensure a seamless integration of our API solution into your Kubernetes cluster and CI/CD pipeline. In terms of security, my understanding of industry-standard mechanisms like JWT and OAuth2 coupled with an adaptive mindset will allow for the flexibility you need to future-proof the authentication layer by catering to possible identity providers. The delivery of this project is not only about writing code; it’s also about documenting the entire solution thoroughly so stakeholders find it easy to use and maintain. My familiarity with Swagger/OpenAPI documentation standards goes hand-in-hand with my commitment to providing comprehensive documentations for every exposed endpoint. Additionally, automating tests over critical domain logic will ensure the stability and reliability of our solution. And finally, delivering a concise migration guide showing the path to decommissioning legacy modules once our new API goes live demonstrates clear stewardship over our work.

@uniqedeveloper

Hello There, I'm new on freelancer but having more than 10+ year of experience and ready to work on lower rate as well. I totally understand your requirement. Replacing a brittle monolith in insurance is not just a rewrite—it’s about extracting domain truth from chaos and rebuilding it in a scalable, testable way. I’ve led a similar modernization where we decomposed a legacy underwriting system into DDD-based .NET Core services. We reverse-engineered business rules from production behavior, introduced aggregates and value objects, containerized everything, and reduced API response time by 50% while enabling horizontal scaling on Kubernetes. For your case, I’d start with domain discovery workshops + runtime analysis to define bounded contexts (Auth/Policy first). I’ll structure the solution using Clean Architecture: Domain (Aggregates, VOs, Repositories), Application (Use Cases), Infrastructure (EF Core, persistence), and API layer with REST endpoints documented via Swagger. Security via JWT/OAuth2 with extensibility for federated identity. Everything Dockerized with Kubernetes manifests and CI-ready pipelines. Automated unit + integration tests will protect core insurance rules before Claims is introduced. Let me know when you’re available to discuss this further I’d be happy to walk you through my approach or showcase examples relevant to this project. Looking forward to hearing from you! Best regards, Mulayam

@tamannarajput18

As a seasoned Full Stack Developer with over 6 years of experience, I have an extensive understanding of API Development, Docker and RESTful services, which are critical to the success of your project. Furthermore, I have a proven track record of creating robust digital solutions that are highly scalable. Having worked previously on tasks similar to yours, particularly when it comes to modernizing legacy systems using domain-driven design (DDD) principles, your project aligns perfectly with my expertise. In terms of technical capabilities, I'm well-versed in working with .NET Core framework following DDD and Clean Architecture patterns which are fundamental to your project’s desired outcome. I can adeptly model the core insurance domain into aggregates and value objects while ensuring efficient performance through well-built repositories. Notably, my ability to handle containerized builds using Dockerfile and Kubernetes along with proficiency in creating automated tests covering critical domain logic will ensure better code maintenance and management. Moreover, integrating robust security mechanisms such as JWT or OAuth2 is an area where I excel, ensuring industry standards as well as flexibility for future refactoring.

@Hemantt841

With 7 years of experience in software development, I am the best fit to complete this .NET Core Insurance API Modernization project. I have the relevant skills to replace the legacy insurance platform with a high-performance API using Domain-Driven Design principles. How I will complete this project: - Model the core insurance domain into aggregates, value objects, and repositories - Expose RESTful endpoints and persist data using EF Core - Implement industry-standard security mechanisms like JWT or OAuth2 - Containerize the application for integration into Kubernetes cluster and CI/CD pipeline - Reverse-engineer business rules from the existing application and stakeholder interviews Tech stack I will use: - .NET Core for building the API - Entity Framework Core for data persistence - Swagger/OpenAPI for documentation - Docker for containerization - Kubernetes for orchestration I have worked on similar solutions in the past, focusing on DDD and modernization. I will deliver well-structured source code, comprehensive documentation, automated tests, a container-ready build, and a migration guide to decommission legacy modules. Let me help modernize your insurance platform efficiently and effectively.

@mariamz24

Hello , We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on Software Architecture, Insurance, RESTful, Docker, Kubernetes, .NET Core, API Development, Microservices, CI/CD Lets connect in chat so that We discuss further. Thank You

@techwagger

As an experienced Application Solution Architect with a strong track record in designing, implementing, and managing scalable enterprise applications, I strongly believe that my skill set is highly aligned with your requirements for this project. My proficiency with .NET Core alongside knowledge of DDD and Clean Architecture principles have empowered me to design and build high-performance APIs sensitive to domain complexity, like the ones you need for User Authentication & Authorization and Policy Management. Furthermore, my adaptability is showcased by the vast range of industries I've worked within during my career, including Healthcare which has some parallels to the Insurance domain. This demonstrates that not only am I effective at diving into new domains rapidly but also that my solutions are sustainable and effective(parentheses are not allowed in character count?), even when we're working with limited documentation like in this instance. Choosing me would mean unlocking the firepower of modern software engineering, proven best practices and delivering digital transformation!

@tohemantpahadia

I am writing to express my interest in your project. With 15+ years of hands-on experience in Microsoft technologies and full-stack application development, I am confident in my ability to deliver high-quality, reliable, and scalable solutions tailored to your business needs. I have extensive expertise in: ASP.NET WebForms, ASP.NET MVC, ASP.NET Core C#, VB.NET, WinForms, WPF, WCF, Web API VB, SQL Server, Stored Procedures, Triggers, T-SQL Crystal Reports development & customization Desktop + Web application development System integration, API development & maintenance QuickBooks integration (QB Desktop & Online) including: Creating invoices, payments, customers, items Bidirectional data sync Using SDK, Web Connector, and REST API Troubleshooting authentication & sync issues Throughout my career, I have worked on enterprise-level applications, legacy modernization, financial system integrations, and reporting solutions. I focus strongly on clean architecture, performance, and user-friendly design. I also ensure clear communication, timely delivery, and long-term support. I would be happy to discuss your project requirements and show how my experience aligns with your goals. Please let me know a convenient time, or feel free to share more details so I can provide an accurate estimate. Thank you for considering my application. I look forward to contributing to your project.

@GeorgeSobhy1

I’m a Software Engineer currently working in the insurance sector, where I design and enhance API-driven systems for a leading insurance broker in Saudi Arabia . Your project—replacing a monolithic legacy insurance platform with a clean, scalable .NET Core API built around Domain-Driven Design—aligns strongly with the work I’m already doing. In my current role, I develop and optimize APIs focused on scalability, performance, and secure integration across distributed systems. Previously, I modernized a legacy system from .NET Framework 4.8 to .NET 8, significantly improving performance, maintainability, and security . This experience directly matches your need to decommission legacy modules safely while introducing a clean architecture foundation. Why I’m a Strong Fit ✔ Real-world insurance API development experience ✔ Experience modernizing legacy .NET systems ✔ Strong background in ASP.NET Core, EF Core, REST APIs, and JWT ✔ Experience implementing secure authentication using Identity + JWT ✔ Comfortable working in Agile environments and CI/CD pipelines

@kutr

.NET and React Full Stack Developer with 7+ years of experience building scalable web applications using .NET Core, Microservices, React, and SQL. I specialize in developing high-performance APIs, optimizing databases, and delivering secure, production-ready solutions. Known for writing clean, maintainable code and solving complex technical problems, I help businesses build reliable and efficient software systems.

@abolfazlmo2006

Hello, I am Abolfazl Mohammadi, a .NET programmer. My expertise is in programming and developing RESTful APIs. I hold a Foundational C Sharp with Microsoft programming certificate.

@nileshp1186

i have extensive end to end api development exp. developed multi user concurrent request high demand api. it was developed with dot net core, rest api, sql database