Global Connect Technologies
Senior .NET / .NET Core Full Stack Developer
Global Connect Technologies, Trenton, New Jersey, United States
Senior .NET / .NET Core Full Stack Developer (Modernization)
Job Title : Senior .NET / .NET Core Full Stack Developer (Modernization)
Experience : 7+ years
We are looking for an experienced Full Stack Developer with a strong background in both .NET Framework and .NET Core, who can drive the modernization of legacy .NET applications into a scalable .NET Core microservices and web portal ecosystem.
The ideal candidate should have a deep understanding of MSSQL databases, be capable of translating and optimizing them into PostgreSQL (AWS RDS), and ensure smooth migration and integration across application layers, along with hands‑on experience with AWS cloud deployment and microservices architecture.
Key Responsibilities
Analyze existing legacy .NET applications and define a modernization and migration strategy to .NET Core.
Develop and modernize both full‑stack web portals and micro‑service based components using .NET Core.
Deeply understand existing MSSQL schema, stored procedures, and business logic, and effectively translate them to PostgreSQL, optimizing for performance and compatibility.
Handle database migration and transformation—including schema conversion, data migration, indexing, and tuning in PostgreSQL (AWS RDS).
Design and build RESTful APIs and backend services, ensuring modularity and maintainability.
Collaborate with DevOps for AWS‑based deployment, CI/CD pipeline setup, and environment automation.
Ensure best practices in security, scalability, and cloud optimization throughout the modernization process.
Apply AWS Well‑Architected Framework principles for reliable and cost‑efficient cloud solutions.
Technical Skills Required
Backend : C#, .NET Framework, .NET Core, ASP.NET Core, Web API, Entity Framework Core.
Database : Strong expertise in MSSQL—including stored procedures, triggers, functions, and performance tuning; proven experience in translating MSSQL to PostgreSQL with data type mapping, query optimization, and schema redesign; hands‑on experience with PostgreSQL on AWS RDS.
Cloud & DevOps : Strong working knowledge of AWS services (EC2, RDS, S3, CloudWatch, API Gateway, Lambda, ECS/EKS); experience deploying and managing .NET Core applications on AWS; familiarity with IAM roles, VPC configuration, and networking basics; experience with Docker, CI/CD (GitHub Actions, Jenkins, AWS CodePipeline).
Testing & Tools : Swagger/Postman, xUnit/NUnit, migration tools (e.g., AWS Schema Conversion Tool).
Preferred
AWS Certification (Developer Associate / Solutions Architect Associate).
Experience in modernizing monolithic systems to cloud‑native microservices.
Experience with serverless (AWS Lambda) and API Gateway integrations.
Familiarity with containerization (Docker, Kubernetes).
Experience with data migration utilities (AWS DMS, pgLoader, Flyway, Liquibase).
Knowledge of Agile/Scrum development processes.
Soft Skills
Strong analytical ability to understand legacy codebases and re‑engineer them effectively.
Excellent problem‑solving and debugging skills across both application and database layers.
Strong communication skills to work with cross‑functional teams and stakeholders.
Self‑driven and ownership‑oriented with a continuous learning mindset.
Seniority level Mid‑Senior level
Employment type Full‑time
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Experience : 7+ years
We are looking for an experienced Full Stack Developer with a strong background in both .NET Framework and .NET Core, who can drive the modernization of legacy .NET applications into a scalable .NET Core microservices and web portal ecosystem.
The ideal candidate should have a deep understanding of MSSQL databases, be capable of translating and optimizing them into PostgreSQL (AWS RDS), and ensure smooth migration and integration across application layers, along with hands‑on experience with AWS cloud deployment and microservices architecture.
Key Responsibilities
Analyze existing legacy .NET applications and define a modernization and migration strategy to .NET Core.
Develop and modernize both full‑stack web portals and micro‑service based components using .NET Core.
Deeply understand existing MSSQL schema, stored procedures, and business logic, and effectively translate them to PostgreSQL, optimizing for performance and compatibility.
Handle database migration and transformation—including schema conversion, data migration, indexing, and tuning in PostgreSQL (AWS RDS).
Design and build RESTful APIs and backend services, ensuring modularity and maintainability.
Collaborate with DevOps for AWS‑based deployment, CI/CD pipeline setup, and environment automation.
Ensure best practices in security, scalability, and cloud optimization throughout the modernization process.
Apply AWS Well‑Architected Framework principles for reliable and cost‑efficient cloud solutions.
Technical Skills Required
Backend : C#, .NET Framework, .NET Core, ASP.NET Core, Web API, Entity Framework Core.
Database : Strong expertise in MSSQL—including stored procedures, triggers, functions, and performance tuning; proven experience in translating MSSQL to PostgreSQL with data type mapping, query optimization, and schema redesign; hands‑on experience with PostgreSQL on AWS RDS.
Cloud & DevOps : Strong working knowledge of AWS services (EC2, RDS, S3, CloudWatch, API Gateway, Lambda, ECS/EKS); experience deploying and managing .NET Core applications on AWS; familiarity with IAM roles, VPC configuration, and networking basics; experience with Docker, CI/CD (GitHub Actions, Jenkins, AWS CodePipeline).
Testing & Tools : Swagger/Postman, xUnit/NUnit, migration tools (e.g., AWS Schema Conversion Tool).
Preferred
AWS Certification (Developer Associate / Solutions Architect Associate).
Experience in modernizing monolithic systems to cloud‑native microservices.
Experience with serverless (AWS Lambda) and API Gateway integrations.
Familiarity with containerization (Docker, Kubernetes).
Experience with data migration utilities (AWS DMS, pgLoader, Flyway, Liquibase).
Knowledge of Agile/Scrum development processes.
Soft Skills
Strong analytical ability to understand legacy codebases and re‑engineer them effectively.
Excellent problem‑solving and debugging skills across both application and database layers.
Strong communication skills to work with cross‑functional teams and stakeholders.
Self‑driven and ownership‑oriented with a continuous learning mindset.
Seniority level Mid‑Senior level
Employment type Full‑time
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