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.Net Full Stack Developer - C#/WinForms/React.js

MyHashtagss
Multiple Locations
5 - 8 Years

Posted on: 11/09/2025

Job Description

About the Role

We are seeking a highly skilled and motivated Fullstack Software Development Engineer to join our product modernization program for a legacy 3-tier WPF/WinForms-based healthcare solution.


The mission is to re-architect and rebuild the system into a modern, scalable, and cloud-native platform leveraging microservices, APIs, and micro frontends deployed on AWS.


This role offers an exciting opportunity to work on end-to-end transformation from modernizing monolithic applications to building cloud-native services that deliver high performance, security, and reliability for critical healthcare operations.

The ideal candidate is not only strong in coding and problem-solving but also has a keen sense of system design, architecture, and DevOps integration, ensuring seamless delivery of business value in an agile environment.


Key Responsibilities :


Backend & API Development :


- Design, develop, and maintain scalable microservices and APIs using .NET 8, C#, and ASP.NET Web API.

- Ensure services follow REST and JSON API standards with proper documentation via Swagger/OpenAPI.

- Apply Clean Architecture and SOLID principles to maintain modularity and ease of testing.

Frontend Modernization :

- Transform legacy WinForms/WPF applications into modern, cloud-native web applications using React.js and micro frontend architecture.

- Build responsive, accessible, and component-driven UIs leveraging JavaScript/TypeScript, HTML5, CSS3, and UI component libraries.

Cloud & Infrastructure :

- Deploy services and applications on AWS (ECS, EC2, S3, API Gateway, IAM, RDS/Aurora).

- Collaborate with architects and DevOps engineers to define infrastructure as code (IaC) using Terraform, AWS CloudFormation, or AWS CDK.

- Set up and maintain containerization pipelines with Docker, ensuring secure, repeatable deployments.

Security & Authorization :

- Implement secure authentication and authorization mechanisms (AuthN/AuthZ) using JWT, OAuth2, and API Gateway.

- Ensure applications comply with healthcare security standards and best practices (HIPAA, GDPR awareness is a plus).

Data & Storage Optimization :

- Work with relational databases such as SQL Server and AWS Aurora PostgreSQL.

- Leverage ORM tools like Entity Framework for efficient data access, migrations, and query optimization.

- Design data access layers with a focus on scalability, integrity, and performance.

Agile & Collaboration :

- Participate in code reviews, sprint planning, backlog grooming, and agile ceremonies.

- Work closely with cross-functional teams (QA, architects, DevOps, UI/UX designers, and product owners) to deliver features on time.

- Contribute to technical discussions, proof-of-concepts (POCs), and architectural decision-making.

DevOps & Continuous Delivery :

- Establish and maintain CI/CD pipelines using GitHub Actions (or similar tools like Azure DevOps, Jenkins).

- Automate build, test, and deployment processes ensuring rapid, reliable, and repeatable releases.

- Monitor and troubleshoot production deployments using logging, monitoring, and alerting tools.


Required Technical Skills :

Backend & Cloud :

- .NET 8, C#, ASP.NET Web API

- REST/JSON APIs, Swagger/OpenAPI documentation

- Clean Architecture, SOLID, OOP

- AWS (ECS, EC2, S3, API Gateway, IAM, RDS/Aurora)

- Docker & containerization best practices

- Infrastructure as Code: Terraform, CloudFormation, CDK

- Authentication & Authorization: JWT, OAuth2, API Gateway integration

- Git, GitHub Actions, or equivalent CI/CD tools

Frontend :

- React.js, JavaScript/TypeScript, HTML5, CSS3

- UI Kit or similar component libraries (Material UI, Ant Design, etc.)

- Micro Frontends and modular UI development

- Responsive and accessible UI design (WCAG guidelines awareness)

Legacy Systems (Understanding) :

- WinForms, WPF, .NET Framework

- Familiarity with NuGet package management and legacy code migration strategies

Database :

- SQL Server and AWS Aurora PostgreSQL

- ORM frameworks like Entity Framework

- Query optimization and performance tuning

Architecture & DevOps :

- AWS Solution Architecture knowledge (application-level and system-level)

- Infrastructure as Code: Terraform, CloudFormation, CDK

- CI/CD tools: GitHub Actions, Azure DevOps, Jenkins (any modern pipeline tools)

- Familiarity with observability tools (CloudWatch, ELK stack, or equivalent)


Preferred Qualifications (Nice-to-Have) :


- Experience in healthcare software domain (EHR, EMR, HIPAA compliance).

- Knowledge of event-driven architectures using AWS SNS/SQS or Kafka.

- Exposure to GraphQL APIs in addition to REST.

- Hands-on with unit testing, integration testing, and automation frameworks (xUnit, NUnit, Jest, Cypress).

- Experience with performance tuning and monitoring of distributed systems.

- Familiarity with serverless architectures (AWS Lambda, Step Functions).


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