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Sr .Net Developer

3B Staffing LLC

Senior Software Engineer (Full-Stack, Backend-Leaning 70/30)

Overview


We are seeking a Senior Software Engineer with a strong backend focus (70%) and solid frontend capabilities (30%) to help build and scale our Student Management platform.


This role is ideal for an engineer who excels in API design, data architecture, and system scalability , while also contributing to user-facing features when needed. You will play a key role in driving technical excellence , shaping architecture, and leveraging AI-assisted development tools to improve productivity, code quality, and delivery speed.

Key Responsibilities

Backend (Primary Focus - ~70%)

  • Design, build, and maintain scalable RESTful APIs and event-driven services using .NET / C#
  • Own backend architecture, including system design, scalability, reliability, and performance
  • Design and optimize MSSQL / Azure SQL databases (data modeling, indexing, performance tuning)
  • Implement secure, maintainable, and efficient data access patterns
  • Contribute to event-driven and distributed system design
  • Build observability into services (logging, monitoring, alerting)
Frontend (Secondary Focus - ~30%)
  • Develop and enhance responsive web UI components using modern JavaScript frameworks (Svelte, React, or similar)
  • Integrate frontend applications with backend APIs
  • Ensure usability, performance, and accessibility standards are met
Cross-Functional / Leadership
  • Translate business requirements into scalable technical solutions
  • Lead design and implementation of complex features
  • Write and maintain automated tests (unit, integration, end-to-end)
  • Conduct code reviews and enforce engineering best practices
  • Mentor engineers and contribute to team growth
  • Collaborate with product, UX, and other stakeholders
AI-DrivenDevelopment Expectations
  • Actively leverage AI-assisted development tools (e.g., code generation, test generation, documentation support)
  • Use AI to accelerate development workflows, debugging, and refactoring
  • Apply critical thinking to validate AI-generated outputs for quality and security
  • Identify opportunities to integrate AI capabilities into the product where applicable
  • Promote best practices for responsible and effective AI usage within the team
Required Qualifications
  • 5+ years of software engineering experience (backend-leaning)
  • Strong expertise in .NET / C# and Web API development
  • Deep experience with MSSQL / Azure SQL
  • Solid experience with JavaScript, HTML, CSS , and modern frontend frameworks
  • Strong understanding of API design, microservices, and event-driven architecture
  • Experience with cloud platforms (Azure preferred, AWS acceptable)
  • Hands-on experience with CI/CD pipelines (GitHub Actions or similar)
  • Strong understanding of software design patterns (MVC, SOLID, DDD)
  • Experience working in Agile environments
Preferred Qualifications
  • Experience with Svelte or modern frontend frameworks
  • Familiarity with Terraform or infrastructure as code
  • Experience with Docker and Kubernetes
  • Knowledge of authentication/authorization (Auth0, OAuth, SSO)
  • Experience with Cypress or similar testing tools
  • Familiarity with GitHub Advanced Security / DevSecOps practices
  • Experience with event streaming or messaging systems
What You'll Bring
  • Strong ownership mindset with the ability to lead complex initiatives
  • Balance of deep backend expertise and pragmatic frontend skills
  • Curiosity and adaptability, especially in leveraging AI to improve engineering outcomes
  • Ability to mentor others and elevate team standards
What Success Looks Like
  • Scalable, reliable backend services powering core platform workflows
  • Clean, well-integrated frontend experiences supporting key user journeys
  • Increased team velocity through effective use of AI-assisted development
  • High-quality, maintainable code with strong test coverage
Work Environment
  • Flexible / Remote
  • Minimal travel (0-10%)
Vacancy posted 5 days ago
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