Core Developer

Company Overview:

About the Role:

We are looking for a highly skilled Core Developer (2-5 years) to join the team as we transition a B2B SaaS product from its existing framework to a new system built Core. This role will be crucial in assessing the current product and codebase identifying key architectural improvements and designing the new system for scalability and efficiency.

For the first two months you will conduct a comprehensive assessment and audit of the existing product to determine the scope of work needed for the transition. Following this you will play a key role in the development of the new backend system ensuring best practices high performance and maintainability.

Key Responsibilities:

• Design and develop a scalable high-performance backend Core.
  

• Define and implement RESTful APIs microservices architecture and event-driven design.
  

• Optimize database queries and work with SQL and NoSQL databases.
  

• Implement authentication and authorization mechanisms using OAuth JWT or other security best practices.
  

• Ensure the system is cloud-ready and optimized for deployment in AWS/Azure/GCP.
  

• Enforce CI/CD pipelines automated testing and containerization (Docker Kubernetes).
  

• Lead code reviews and mentor junior developers.
  

• Continuously improve performance security and scalability.
  

• Collaborate with front-end teams DevOps engineers and QA teams to ensure seamless integration and deployment.
  

Requirements

Mandatory Skills:

• 2-5 years of experience in .NET Core backend development.
  

• Strong expertise in C# and Core.
  

• Experience in building RESTful APIs and microservices.
  

• Proficiency in SQL databases (PostgreSQL SQL Server) and NoSQL databases (MongoDB Redis).
  

• Strong knowledge of architectural patterns including CQRS DDD and event-driven design.
  

• Hands-on experience with cloud platforms like AWS or Azure.
  

• Experience with authentication/authorization mechanisms such as OAuth2 JWT or IdentityServer.
  

• Proficiency in unit testing integration testing and test automation frameworks.
  

• Familiarity with CI/CD pipelines Docker and Kubernetes.
  

• Strong understanding of asynchronous programming multithreading and performance optimization.
  

• Excellent problem-solving skills and ability to work in an agile environment.
  

Good to Have Skills:

• Experience in message queuing systems (RabbitMQ Kafka Azure Service Bus).
  

• Exposure to GraphQL gRPC or WebSockets.
  

• Familiarity with IaC (Infrastructure as Code) using Terraform or CloudFormation.
  

• Experience working with legacy system migrations.
  

• Knowledge of front-end technologies like React Angular or Blazor is a plus.
  

Benefits

What we Offer:

• A chance to work on a greenfield project and influence architectural decisions.
  

• Competitive salary and benefits.
  

• Flexible work environment (remote or hybrid options available).
  

• Career growth opportunities in a fast-growing SaaS company.
  

• A collaborative and innovative team culture.