Background Decorative

Senior Fullstack Developer (Legacy Modernization)

Apply To This Job

Join #Octosteam! 🚀

At Octosteches, we are a custom software development company with more than 19 years of experience delivering high-quality technology solutions. We are currently looking for a Application Developer to join our team and collaborate with one of our international clients.


Core Development Skills

  • Strong experience in Microsoft .NET application development
  • Full-stack development expertise using ASP.NET Core MVC.
  • Solid experience in C# development.
  • Working knowledge of VB.NET, particularly for maintaining and supporting legacy applications.
  • Experience with ASP.NET Web Forms, specifically for application support and migration to modern frameworks.
  • Experience working with the Repository Pattern and layered application architecture.
  • Familiarity with dependency injection, application architecture, and performance optimization.
API & Integration Development
  • Proven experience designing and supporting RESTful APIs / Web APIs.
  • Strong understanding of JSON, data serialization, and API integration
  • Understanding of authentication and security standards for APIs (e.g., OAuth, token-based authentication)

Front-End Development

  • Strong client-side scripting experience using JavaScript and jQuery.
  • Proficiency in HTML5, CSS3, and responsive web design principles.
  • Experience with Bootstrap 4/5 and modern UI development practices.
  • Ability to develop and maintain responsive, user-friendly web applications across devices and browsers.
  • Familiarity with front-end debugging, browser developer tools, and UI optimization

Database Development

  • Strong working knowledge of Microsoft SQL Server.
  • Experience with T-SQL, including: Stored procedures, Functions, View.
  • Understanding of database design, normalization, and data integrity principles

Azure Cloud & Environment Experience

  • Proven experience working within the Microsoft Azure environment.
  • Experience with Azure App Services, Azure SQL, and application deployment within Azure.
  • Familiarity with Azure DevOps, pipelines, and release management.
  • Exposure to Azure storage, identity management, and environment configuration is advantageous.

Team Development, Build & Testing.

  • Experience using Azure DevOps, Git, and source control best practices.
  • Strong understanding of CI/CD pipelines (Continuous Integration / Continuous Deployment).
  • Experience with automated builds, release processes, and deployment management.
  • Unit testing experience and commitment to code quality and maintainabilit.
  • Familiarity with test-driven development (TDD) and code review best practice.
  • Experience working within Agile/Scrum development environments
Desirable Skills
  • Strong problem-solving and troubleshooting abilities.
  • Ability to work effectively both independently and within cross-functional team
  • Good communication skills and stakeholder engagement experience
  • Exposure to application modernization and migration projects is highly desirable
  • ​​Experience supporting business-critical enterprise applications
​​​​​​What we offer

✅ 100% remote opportunity
✅ Opportunity to work on cutting-edge AI projects
✅ Collaboration with leading Frontier LLM companies
✅ International and innovation-driven environment
✅ Potential contract extension based on performance and project needs