DotNet Deveoper Orange Tree Systems
Job Summary
Our client Orange Tree Systems is looking for DotNet Developer / in Lahore.
As a .NET Engineer you will lead the design and delivery of scalable secure and high-performance backend systems powering web desktop mobile and multi-platform this role we are specifically looking for a developer with strong experience as a key part of the work involves migrating an existing project written in .
What Youll Do
Backend Engineering
- Design build test and maintain backend services and REST/GraphQL APIs using .NET ( Core).
- Work on the migration of legacy applications into modern C# .NET Core architecture.
- Analyze refactor and modernize existing code while preserving business logic and system stability.
- Implement secure authentication and authorization using OAuth2 OpenID Connect JWT and industry-standard identity providers.
- Integrate internal services and third-party systems with a focus on security resilience performance and data integrity.
Quality Collaboration & Operations
- Apply engineering best practices including clean architecture testing documentation and performance optimization.
- Participate in code reviews design discussions and architectural decision-making.
- Troubleshoot production incidents perform root-cause analysis and implement long-term fixes.
- Collaborate cross-functionally to deliver business-critical features with high reliability.
Background & Qualifications
- 7 years of backend engineering experience with strong depth in .NET.
- Strong hands-on experience with and proven experience working on migration or modernization projects.
- Expert proficiency in C# Core and API design (REST; GraphQL is a plus).
- Strong experience in SQL Server/PostgreSQL including schema design and performance tuning.
- Hands-on experience with Azure cloud services and cloud-native development.
- Understanding of microservices event-driven architecture distributed systems and reliability principles.
- Experience with CI/CD version control and automated testing.
- Docker/Kubernetes experience is a plus.
- Healthcare domain experience (e.g. EHR/EMR HL7 FHIR pharmacy or healthcare platforms) is a strong advantage.
Technology Stack
- Backend: .NET / Core (Web API MVC) microservices
- Legacy / Migration Focus: to C# .NET Core
- Frontend Exposure: React Angular Blazor
- Databases: SQL Server PostgreSQL Cosmos DB
- DevOps: Docker Kubernetes CI/CD
- Architecture: Microservices event-driven systems distributed services
What Were Looking For
- Migration-Focused Developer: Comfortable working with legacy systems and modernizing them into scalable .NET Core solutions.
- System Thinker: Designs secure scalable systems with strong engineering fundamentals.
- Strong Ownership: Drives delivery end-to-end and raises the quality bar.
- Collaborative Builder: Communicates clearly and works effectively across teams.
- Quality Focused: Writes clean testable maintainable code and improves existing systems.
- Adaptable: Learns quickly and applies modern tools patterns and cloud services.
Why Join Orange Tree Systems
- Build healthcare technology that creates real-world impact
- Work with a fast-growing highly skilled engineering team
- Deep exposure to Azure scalable backend systems modernization initiatives and modern DevOps practices
- Opportunity to shape architecture performance and long-term platform direction
- Play a key role in the transformation of a legacy healthcare pharmacy platform into a modern engineering ecosystem
Key Skills
- Computer Science
- Active Directory
- Computer information Technology
- PowerShell
- OS
- Windows
- Database
- SCCM
- Linux
- SAN
- Troubleshoot
- Backup
- Setup
- Technical Support
- UNIX