This is a remote position.
Job Title: Sr. Software Engineer (.NET Full stack Developer)
Location: Remote
Duration: 12 months Contract
Who You Are:
You are a motivated Software Development professional passionate about NET/Azure development and integrations. You excel at software development and have experience in .NET, specifically C#, React, API, and Evening. You are optimistic, proactive, analytical, and innovative, and you thrive in a fast-paced environment where you can enhance and create high-value, customer-facing systems.
What You’ll Do
• Design, develop, and implement event-driven microservices and APIs using .NET Core and C#.
• Build full-stack features leveraging React for the front end and .NET/Azure for backend services.
• Develop consumer-driven APIs aligned with API-first design principles.
• Collaborate with architects and technical leads to define and refine scalable solutions.
• Decompose complex epics and user stories into manageable, testable development tasks.
• Write high-quality, maintainable, and secure code with strong unit and integration test coverage.
• Conduct code reviews to ensure adherence to coding standards, best practices, and design principles.
• Troubleshoot, optimize, and enhance existing software applications.
• Collaborate with cross-functional teams including product managers, engineers, and stakeholders to deliver high-value solutions.
• Mentor and guide junior developers, fostering growth and best-practice adoption.
• Maintain technical documentation for developed features and services.
• Adapt quickly to evolving requirements, technologies, and system integrations.
• Operate effectively in high-pressure environments, managing multiple priorities and deadlines.
• Communicate technical concepts clearly to both technical and non-technical audiences.
• Other duties as assigned.
What You’ll Need:
· Bachelor’s degree in computer science, Engineering, or related field, or equivalent experience.
· 5+ years of experience in full-stack software development with C#/.NET Core and React.
· Expert knowledge of RESTful APIs, and event-driven design patterns.
· Hands-on experience with Kafka (or equivalent event streaming platforms).
· Strong background in Azure services including API Management (APIM), Key Vault, and cloud-native deployments.
· Proficiency with Kubernetes and Terraform for container orchestration and infrastructure automation.
· Experience with ArgoCD or similar GitOps deployment tools.
· Familiarity with NoSQL databases (MongoDB preferred).
· Exposure to Blazor is a plus.
· Solid understanding of CI/CD pipelines, Git, and DevOps practices.
· Preferred experience in orchestrations and transformations across distributed backend systems.
· Strong analytical, problem-solving, and debugging skills.
· Proven ability to work independently while managing multiple projects.
· Exceptional communication and leadership skills with the ability to mentor team members.
· High adaptability, resilience, and ability to perform under pressure in dynamic environments.
· Strong customer service mindset and urgency to deliver impactful solutions.
Skills Required
- Bachelor's degree in Computer Science, Engineering, a related field, or equivalent experience
- 5+ years of full-stack software development experience with C#/.NET Core and React
- Expert knowledge of RESTful APIs and event-driven design patterns
- Hands-on experience with Kafka or equivalent event-streaming platforms
- Strong experience with Azure services, including API Management, Key Vault, and cloud-native deployments
- Proficiency with Kubernetes and Terraform
- Experience with ArgoCD or similar GitOps deployment tools
- Familiarity with NoSQL databases, preferably MongoDB
- Solid understanding of CI/CD pipelines, Git, and DevOps practices
- Experience with orchestrations and transformations across distributed backend systems
- Exposure to Blazor
- Strong analytical, problem-solving, and debugging skills
- Ability to work independently while managing multiple projects
- Exceptional communication and leadership skills, including mentoring ability
- High adaptability, resilience, and ability to perform under pressure
- Strong customer service mindset and urgency to deliver impactful solutions
What We Do
Established in 2004, 3Core System is a certified small minority owned business providing ERP Systems Integration, AMS, IT Consulting and Staff Augmentation Services to Fortune 1000, SMB, and State, Local and Education (SLED) customers. While our System Integration services help organizations achieve digital and cloud transformation objectives, AMS Services help increase the availability of critical services of end user applications. On the other hand, our IT Consulting Services would provide subject matter experts to help you assist with specific project needs and the Staff Augmentation services help you balance workload and achieve budget parameters. >ERP System Integration Services: 3Core Systems is an SAP Silver Partner and authorized service provider offering technical architecture, application design and configuration, integration, testing, data migration and solution adoption services for solutions including SAP SuccessFactors, SAP HCM On-Premises and SAP Business Intelligence >Application Management Services (AMS): We offer post go-live, System Health Check and Optimization, Function Enhancements, Integration Monitoring, Release, and patch services. Our AMS services span across SAP Solutions including ERP (S/4 HANA), Financial Management, Human Capital Management, Data and Analytics, Supply Chain, CRM, and Customer Experince. >IT Consulting and Staffing Augmentation Services: Ever since its inception, 3Core Systems has been offering IT Consulting and Staff Augmentation solutions including temporary, long-term, project based and contract staffing services that could be personalized based on your needs. Our staffing services span across emerging technologies and legacy solutions including but not limited to Artificial Intelligence, Machine Learning, Data Science, Cloud, ERP, CRM, BI/BW/ETL, Database, Web & E-Commerce, UI/UX, Network & Security and Mobile.


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