Senior Backend Engineer, .NET Core

Jobtailor; Falls Church (VA); On-site; USD 140,000 - 190,000; Full time

Job summary

Jobtailor is seeking a senior Backend Architect to lead our .NET Core microservices and backend build quality. You will direct an offshore team while remaining hands-on in service design, API contract ownership, and CI/CD governance to keep the platform production-ready.

You will own Azure SQL schema design, REST APIs via APIM, and secure write-path logic, ensuring compliance and high reliability across sprint cycles and post-launch hypercare.

Qualifications

• 6–8 years of back-end development experience.
• At least 4 years focused in .NET Core / C#.
• Experience leading or directing offshore back-end teams.
• Strong experience designing REST APIs exposed through an API gateway (Azure APIM preferred).
• Proficiency with Azure SQL, schema design, and delta-refreshed transactional cache.
• Experience with Azure Service Bus or similar async messaging infrastructure.
• Solid understanding of microservices architecture and separation of concerns between API gateway, service layer, and data layer.
• Proficiency with Azure DevOps CI/CD pipelines and security-gated builds (Veracode or similar).
• Experience using AI coding assistants (e.g., Claude Code, GitHub Copilot, Cursor).
• Strong verbal and written communication skills.

Responsibilities

• Lead backend architecture and set standards; oversee service layer quality.
• Direct offshore engineers while staying hands-on in design and CI/CD governance.
• Own REST API endpoints via API Management; ensure production readiness each sprint.
• Design Azure SQL transactional cache schema and write-path logic.
• Enforce security, data validation, and error handling in the service layer.
• Ensure CI/CD pipeline compliance with Veracode SAST/SCA before merging.
• Lead bi-weekly sprint demos and triage backend defects during SIT/UAT.

Skills

Back-End Development

Microservices Architecture

REST API Design

Azure SQL Proficiency

CI/CD Pipeline Governance

Azure DevOps

Azure Service Bus

Security Compliance

Leading Offshore Teams

Veracode SAST/SCA

AI Coding Assistants

API Gateway Design (Azure APIM)

Strong Communication

Tools

Azure API Management

Veracode

AI Coding Assistants

Azure DevOps

Azure SQL

Azure Service Bus

Job description

• Lead .NET Core microservices architecture and backend build quality for the platform
• Direct a pod of offshore back-end engineers while remaining hands‑on in service design, API contract ownership, and CI/CD pipeline governance
• Serve as the technical authority on all backend decisions, from Azure SQL cache schema design through write‑path logic, Azure Service Bus patterns, and security compliance
• Work closely with the onshore Solution Architect, Integration Lead, and Sr. Front-End Engineer to ensure the backend layer is production‑ready and validated every sprint
• Set architectural standards, oversee service layer quality, and guide offshore engineering efforts
• Design and own the Azure SQL transactional cache schema
• Implement REST API endpoints exposed through Azure API Management (APIM), consumed by the React frontend
• Implement write‑path logic that routes commit actions through Azure Service Bus to OIC flows and back to the ERP
• Enforce business logic, data validation, and error handling standards within the service layer
• Own CI/CD pipeline compliance for backend code, ensuring all commits pass Veracode SAST + SCA security scanning before merging
• Lead bi-weekly sprint demos for backend workstreams and resolve and triage backend defects during SIT, UAT, and post‑launch hypercare

Requirements

• 6–8 years of back-end development experience
• At least 4 years focused in .NET Core / C#
• Demonstrable experience leading or directing offshore back-end engineering teams
• Strong experience designing and building REST APIs exposed through an API gateway (Azure APIM preferred)
• Proficiency with Azure SQL, schema design, query optimization, and working with a delta‑refreshed transactional cache pattern
• Experience with Azure Service Bus or similar async messaging infrastructure, including retry logic, dead‑letter handling, and error queues
• Solid understanding of microservices architecture and separation of concerns between API gateway, service layer, and data layer
• Proficiency with Azure DevOps CI/CD pipelines and security‑gated build processes (Veracode or similar SAST tools)
• Experience using AI coding assistants (e.g., Claude Code, GitHub Copilot, Cursor)
• Strong verbal and written communication skills

Core Competencies

Demonstrates expertise in .NET Core microservices architecture, backend development, and API design, with a strong focus on Azure technologies and CI/CD pipeline governance. Proven ability to lead offshore engineering teams while ensuring high-quality service layer standards and compliance.

Highest-signal resume keywords

• Back-End Development
• Microservices Architecture
• REST API Design
• Azure SQL Proficiency
• CI/CD Pipeline Governance

ATS Optimization Keywords

Hard Skills

• .NET Core
• C#
• REST API
• Azure SQL
• Azure Service Bus
• Microservices
• Azure DevOps
• Schema Design
• Query Optimization
• Security Compliance

Soft Skills

• Verbal Communication
• Written Communication

Industry Keywords

• Offshore Engineering
• Service Layer Quality
• Error Handling Standards
• SAST Tools
• Transactional Cache Pattern

Tools & Technologies

• Azure API Management
• Veracode
• AI Coding Assistants