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We are looking for a Senior Developer with strong experience in ASP.NET Core 10 and Angular 21. Required skills: SOLID principles Design Patterns Domain-Driven Design (DDD) Clean, maintainable, and testable code Automated Unit Testing (backend and frontend) Real-world experience, not just theoretical knowledge The candidate should be able to use AI tools responsibly to accelerate development, refactoring, testing, and documentation while maintaining full technical ownership of the solution. Important: SOLID and DDD should be applied pragmatically to improve the project, not to introduce unnecessary complexity.
Project ID: 40654816
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213 freelancers are bidding on average $26 USD/hour for this job

A Warm Hello! We are readily available to start working on this project! I have read your job posting and glad to mention that we have experienced senior engineers specializing in ASP.NET Core, Angular, enterprise architecture, Domain-Driven Design, SOLID principles, automated testing, refactoring, and scalable software development. Why Choose Our Agency? * Senior ASP.NET Core + Angular expertise * Strong understanding of SOLID and DDD * Pragmatic architecture * Production-focused development experience * Automated backend and frontend testing * Responsible AI-assisted development * Clean and maintainable code * Strong ownership and accountability * Flexible integration with existing development teams * Focus on long-term maintainability rather than quick hacks We are available to start promptly and would be happy to review your existing architecture/codebase, understand the domain, and identify the areas where our senior developers can provide the greatest immediate value. Best regards, Ana
$20 USD in 40 days
9.9
9.9

★★★ ASP.NET CORE AND ANGULAR SPECIALIST ★★★ Hi, I can build a strong solution using ASP.NET Core 10 and Angular 21 for your project goals. I have real-world experience with SOLID principles and Domain-Driven Design. I will ensure clean, maintainable, and testable code with automated unit testing. I will use AI tools wisely to speed up development and keep full ownership of the solution. Let’s discuss how I can help you achieve your goals! Thanks!
$20 USD in 40 days
8.2
8.2

Dear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in JavaScript, Website Design, HTML5, Software Development, Backend Development, Frontend Development, .NET Core, Angular and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
$30 USD in 5 days
8.8
8.8

With a deep sense of professionalism and over a decade of experience working across various web development fields, I guarantee highly proficient services in your ASP.NET Core 10 and Angular 21 project. My knowledge of SOLID principles, Design Patterns, and Domain-Driven Design (DDD) equips me to not just introduce complexity but rather utilize those concepts pragmatically for enhanced project performance. I understand that clean, maintainable, and testable code is the backbone of any successful application, and this is a guarantee you can always expect from me. My front-end and back-end skills in HTML5, JavaScript, and .NET Core align perfectly with your project requirements. On top of that, my commitment to writing automated test scripts without compromise makes sure that the quality of your project remains at an elevated level throughout its lifecycle. I leverage AI tools cautiously to accelerate development processes including refactoring, testing, and documentation without relinquishing complete control and technical ownership over the solution.
$20 USD in 40 days
8.2
8.2

Hello, I can help you with "ASP.NET Core 10 & Angular 21 Expert Developer" as per your given set of instructions. Please get in touch to discuss more in detail and start with the initial discusssion. I usually work in small milestones, keep the code organized, and provide regular updates so changes are easy to review. Let's discuss the current setup. I'll suggest the best implementation and an accurate timeline. ⭐ 5.0/5 from a recent client: "A more professional version: “Excellent work! The job was completed within the committed timeline. Great quality, professionalism, and timely delivery. Highly appreciated and recommended.”" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$19 USD in 1 day
7.5
7.5

Hi, Sphinx Solutions can provide an experienced Senior Developer/Development Team with strong expertise in ASP.NET Core, Angular, SOLID, Design Patterns, DDD, clean architecture, and automated testing. We focus on practical, maintainable architecture—not over-engineering, with strong emphasis on code quality, scalability, refactoring, and test coverage. Our developers also use AI tools responsibly for development, testing and documentation while maintaining complete technical ownership. Sphinx Solutions is a CMMI Level 3 company with 16+ years in the market and 1000+ projects delivered. Punch line: Clean architecture, smart engineering, and production-ready code—built to last. Regards, Sphinx Solutions
$20 USD in 40 days
7.4
7.4

Hi, This is the kind of project where clean architecture matters more than simply making features work. I have 12+ years of full stack experience with .NET, C#, ASP.NET Core, Angular, SQL, and enterprise applications, including SOLID, design patterns, DDD, and automated testing. I prefer pragmatic DDD rather than adding layers just to make the architecture look complex. I can also use AI for repetitive development and testing while keeping the code, decisions, and reviews fully under my ownership. Relevant .NET work includes Easyship, Gelato, 0800job, and Smilestream. Rate: $20/hour | Available immediately If you share the current architecture or Git repository, I can quickly identify where I would start and how I would structure the work. Please ping to get started and get outstanding results. Thanks!!!
$20 USD in 40 days
7.5
7.5

Hello!! I have carefully reviewed your requirements for an ASP.NET Core 10 and Angular 21 Senior Developer. I have 10+ years of experience in the required technologies and strong hands-on experience building scalable applications using SOLID principles, design patterns, DDD, clean architecture, and automated testing. >>> 40-45 hours weekly I am available for work<<<< >>> you will track all progress of the project thru the tracker <<< I can develop and refactor backend and frontend code with a practical approach to DDD, ensuring the architecture remains maintainable without unnecessary complexity. I will implement unit tests across ASP.NET Core and Angular, review code quality, improve existing modules, and use AI-assisted development responsibly for productivity while maintaining full ownership of the technical decisions and code. I WILL PROVIDE 2 YEAR FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE. I am available according to your convenient time zone and can start immediately. I eagerly await your positive response. Thanks, Christina
$15 USD in 40 days
7.3
7.3

Hello, The project calls for a maintainable ASP.NET Core 10 backend paired with an Angular 21 frontend, built on SOLID, DDD, and testable code while leveraging AI tools to speed development without sacrificing ownership. Technical approach: - Layered architecture: API, Application, Domain, Infrastructure (C 12, EF Core, MediatR) - Angular with Signals/NgRx, TypeScript strict mode - Unit tests: xUnit/Jest, mocking with Moq - CI/CD pipeline for automated builds and testing Core modules: - Domain models and repositories - Application services with CQRS handlers - RESTful API controllers - Angular feature modules, services, and components - Automated unit test suites for backend and frontend - AI‑assisted refactoring and documentation workflow Relevant systems: - Bison360 ERP (Spring Boot/React/Flutter) - layered DDD design, clean API, offline‑first sync - ORDO AI productivity platform (NestJS/React) - scalable backend API, complex state management - StepOut Live ecosystem (Laravel/Flutter) - modular apps, clear service boundaries Implementation strategy: 1. Define core domain and DB schema 2. Scaffold minimal API and Angular shell 3. Deliver first vertical slice (e.g., user login/profile) with full test coverage 4. Iterate feature‑by‑feature, using AI for boilerplate and test generation 5. Harden performance, security, and deploy to staging Questions: 1. Should we start from an existing database schema or design the domain model afresh? 2. What extent of AI assistance is desired for code scaffolding, test creation, and documentation? 3. Preferred testing and CI/CD stack (e.g., xUnit/Jest with GitHub Actions or Azure DevOps)? Regards, Rohit
$15 USD in 25 days
7.8
7.8

Hello Hi, I’m Hung, a Full-Stack Developer with 5+ years of experience. I specialize in building scalable applications using ASP.NET Core 10 and Angular 21. I have a proven track record of delivering robust, high-performance backends and seamless frontends. I’m confident I can provide the senior-level expertise your project requires. Giáp Văn Hưng
$20 USD in 7 days
6.9
6.9

Angular Expert, ------✦❇️ HOURLY rate :- $11 USD /hr ❇️✦----- I’m a Senior Full-Stack Developer with strong experience building scalable, maintainable applications across .NET, Angular, JavaScript, APIs, databases, & modern frontend architectures. I can contribute effectively to your ASP.NET Core 10 + Angular 21 project with a practical approach to SOLID, DDD, Clean Architecture, and design patterns—without over-engineering. My approach includes:-> • Clean, modular and testable backend/frontend code • REST API development and integration • Domain-driven architecture where it adds real value • Automated unit testing for critical business logic • Refactoring and performance optimization • Secure, maintainable authentication and authorization • Responsible use of AI tools for development, testing & documentation while retaining full technical ownership • Clear documentation and consistent Git-based workflow I focus on production-ready code rather than theoretical implementations, with maintainability and long-term scalability in mind. Let’s connect to discuss the existing architecture, priorities, and development workflow. -- Regards, Ravi s.
$16 USD in 40 days
6.6
6.6

Your current architecture will accumulate technical debt fast if SOLID and DDD are applied without clear bounded contexts. I've refactored legacy .NET systems where over-engineering caused 40% slower deployment cycles. Quick questions - are you migrating from an existing monolith or building greenfield? And what's your test coverage target for backend services? Here is the architectural approach: - ASP.NET CORE 10 + ANGULAR 21: Build domain-driven modules with clear separation between application, domain, and infrastructure layers using CQRS where complexity justifies it. - SOLID + DDD: Apply dependency inversion and aggregate patterns pragmatically to reduce coupling without over-abstracting simple CRUD operations. - AUTOMATED TESTING: Implement xUnit for backend services and Jasmine/Karma for Angular components with 80%+ coverage focused on business logic, not boilerplate. I've architected similar systems for 4 enterprise clients where clean architecture reduced bug rates by 60%. Let's schedule a technical call to align on bounded contexts before you commit to a structure.
$18 USD in 30 days
7.2
7.2

Hi, The project sounds like a solid full-stack build where ASP.NET Core 10 handles the backend logic and Angular 21 manages the frontend, with a focus on clean architecture and automated testing. That kind of separation keeps maintenance straightforward and makes it easier to scale later. I’ve worked on similar setups where SOLID and DDD helped structure the domain without overcomplicating the flow. The key is balancing those principles with practical needs—keeping interfaces minimal and avoiding layers that don’t add immediate value. For testing, I’d lean on xUnit for the backend and Jasmine/Karma for the frontend, integrating both into CI to catch regressions early. Refactoring would rely on AI-assisted suggestions but always with manual review to ensure the changes align with the actual domain rules. One tricky part is usually mapping the domain models cleanly to the UI. If the Angular services end up mirroring the backend’s DTOs too closely, it can bloat the frontend. A middle layer of slim view models often helps without adding unnecessary complexity. The biggest unknown might be how well the existing domain translates to the new codebase. If the requirements shift mid-project, starting with a few focused unit tests for critical paths can help validate changes quickly without rewriting everything. I can start working right away. Let's connect and discuss the details. Thanks, Denis.
$15 USD in 40 days
6.3
6.3

Hello! We can provide an external developer for your current tasks. 1. Are you open to working with an external contractor or team for these tasks? 2. Which tasks and technologies need to be covered first? — About us We are dZENcode – a full-cycle IT company for digital product development: from design and programming to integrations and post-release support. We build projects from scratch and also work on existing solutions that need further development, improvements, or technical support. You can find detailed information about our services and rates on our official website: https://dzencode.com. Please review it – after that, we can discuss the details and agree on the next step. ⚠️ After clarifying all details, we will define the scope, the suitable cooperation format – task-based, outsourcing, or outstaffing – and the final cost. Projects are guaranteed to reach release with us: • 10+ years providing IT services; • 90+ in-house specialists; • 250+ public reviews since 2015; • We support products under SLA after launch; • We work under NDA and a company contract!
$20 USD in 40 days
6.6
6.6

Hi There, I carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. I am 15+ years in this business and our technical specialists have strong experience in JavaScript, Website Design, HTML5, Software Development, Backend Development, Frontend Development, .NET Core, Angular and other technologies relevant to your project. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Girish R.
$20 USD in 40 days
6.4
6.4

As a trusted Full Stack expert with a strong focus on .NET Core, Software Development, and Website Design, I'm confident that my over X years of experience will be an invaluable asset to your project. My team at SoftwareLinkers is dedicated to producing clean, scalable and testable code, all in line with the SOLID principles you highlighted. Moreover, we are strong proponents of pragmatic utilization of DDD and other concepts to enhance projects without adding unnecessary complexity. One aspect that sets us apart is our commitment to ensuring technical ownership throughout the process without neglecting responsibility AI-powered tools can bring. Utilizing these tools responsibly for accelerating development, refactoring, testing, and documentation is absolutely feasible and we would be happy to discuss more about specific scenarios you have in mind. Notably, our penchant for using AI effectively is paired with a deep understanding of solid design principles and automated unit testing for both backend and frontend. This prowess has won us loyalty across various industries like Education & eLearning, Insurance & Finance, Logistics & Operations, Corporate & Enterprise platforms as well as Startups because clients know they can rely on us for secure, efficient and forward-thinking solutions. M
$20 USD in 40 days
6.1
6.1

I’ve worked on enterprise .NET and Angular applications where clean architecture, testability, and pragmatic domain modelling were central, and I can show relevant examples privately. I can contribute across ASP.NET Core 10 and Angular 21, applying SOLID, DDD, and established design patterns only where they clarify responsibilities or protect important business rules. I focus on explicit domain boundaries, dependable APIs, maintainable components, and automated backend and frontend tests. I also use AI tools for targeted refactoring, test generation, documentation, and code analysis, while personally validating every architectural decision and delivered change. Is this role focused mainly on building a new system or improving an existing codebase with established domain boundaries? Regards, Houssame
$20 USD in 40 days
6.2
6.2

Hello I have strong hands on experience with ASP.NET Core and Angular, focusing on clean architecture, SOLID principles, DDD, design patterns, and reliable unit testing. I can bring a practical approach to your project, using AI responsibly to improve development and testing while keeping full ownership of the code and solution. Best Regards Fizza
$15 USD in 40 days
6.1
6.1

Dear Hiring Manager, I am excited to apply for the Senior Developer position. I have 8.6+ years of hands-on experience in .NET development, specializing in C#, ASP.NET Core, Web APIs, Angular, SQL Server, and enterprise applications. I focus on building clean, maintainable, scalable, and testable software. I apply SOLID principles and proven design patterns pragmatically to achieve loose coupling, maintainability, and extensibility without introducing unnecessary complexity. I also have practical experience applying DDD concepts where they provide genuine business and architectural value. My experience covers the full development lifecycle, including technical design, development, refactoring, automated testing, debugging, deployment, and production support. I strongly believe in writing code that is easy to understand, test, and evolve. I also use AI tools responsibly to accelerate development, refactoring, unit-test creation, debugging, and documentation. I treat AI as a productivity tool while maintaining full ownership of the architecture, code quality, security, testing, and final solution. Your emphasis on real-world SOLID and DDD implementation rather than theoretical knowledge strongly aligns with my approach to software engineering. I am available for 40 hours per week and would be happy to discuss how my experience can contribute to your team. Best regards, Sunny Nanda
$20 USD in 40 days
6.0
6.0

With my extensive experience in software engineering, focusing on .NET Technologies including C#, WPF, WCF, and ASP.NET Core, I am confident in my ability to meet your project's requirements. Having especially worked on numerous ASP.NET Core and Angular projects, I feel well-suited to deliver quality results for your specific needs. What sets me apart is my broader proficiency as a project manager and my dedication to producing maintainable and high-quality code. I strongly believe in pragmatic application of SOLID and DDD principles which aligns precisely with your focus on implementing them to improve projects without introducing unnecessary complexity. I can provide two senior devs (I am backend senior dev) with more than 15 years exp on .NET Core and Angular. Please contact me for the details. Regards Armando
$50 USD in 40 days
6.6
6.6

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