Senior / Lead .NET Software Engineer

Senior / Lead .NET Software Engineer / SRE

DETAILS

Location: Arlington, TX 76014 (hybrid onsite 2-days per week)

Openings: 2 (1 Senior .NET / 1 Lead .NET)

Position Type: 6M C2H

JOB SUMMARY

Vaco is currently seeking a Senior .NET Software Engineer / SRE for a 6M C2H opportunity that is located in Arlington, TX 76014 (hybrid onsite 2-days per week).

About the Project: This is an ongoing multi-year digital transformation initiative (now roughly 2+ years in) focused on modernizing financial services platforms, making them more scalable, reliable, automated, and cloud native. The .NET Engineer / SRE will be building and extending tools / frameworks for SRE practices, including automation scripts, custom monitoring, CI/CD enhancements, reliability tooling, etc. The .NET Engineer / SRE will help bridge the gap between development teams (writing .NET) and SREs (ensuring reliability at scale), especially within this strategic / tool building-focused SRE practice. This is not a traditional .NET Developer (no owning user-facing APIs or business logic for financial services), but rather applying .NET skills to SRE tasks, including building custom tools for automation, reliability, and release engineering, creating GITHub Copilot context files to embed SRE practices (security / performance checks) early in development cycles, debugging / refactoring code in production environments, performing root-cause analysis, and iterating post-deployment. Additionally, there's no traditional on-call production monitoring / support, whereas the focus will be on design, architecture, automation, and enabling scalable DevOps / SRE practices for development teams, rather than day-to-day firefighting.

Ideal Senior Candidate: The ideal candidate will come with a Developer-First Mindset for full SDLC, Architecture Ownership, and Problem Solving (build the tool if it does not exist approach). Having .NET fluency enables strategic SRE in their .NET / Azure ecosystem, bridging gaps between development and operations without siloed roles. The Senior Engineer MUST be able to walk through their most recent projects, in depth, describing complex features, debugging, and development frameworks (why you'd choose one over the other for particular tasks, etc.).

Ideal LEAD Candidate (leading teams of 5+): The ideal candidate will come with a Developer-First Mindset for full SDLC, Architecture Ownership, and Problem Solving (build the tool if it does not exist approach). Having .NET fluency enables strategic SRE in their .NET / Azure ecosystem, bridging gaps between development and operations without siloed roles. The Lead Engineer MUST be able to walk through their most recent projects, in depth, describing complex features, debugging, and development frameworks (why you'd choose one over the other for particular tasks, etc.).

JOB REQUIREMETS

• .NET Core Development (hands-on core expertise) Strong C# / .NET (Core 6/8+) Development | Building / Maintaining Production-Grade Applications / APIs / Services | Clean / Maintainable Enterprise Code | Design Patterns (Factory / Singleton, etc.) | Onion / Clean Architecture
• Cloud Modernization / Migration Migrating Legacy .NET Applications to Cloud-Native Azure Architectures | Refactoring / Modernizing Existing Codebases While Maintaining High Uptime (99.9%+)
• Azure-Native Application Development Designing / Deploying / Supporting .NET Applications Directly in Azure with Real Production Workloads | Beyond Portal-Based Click-Ops | Deep Integration of Azure Services into .NET Code
• AKS / Containerization Containerizing .NET Applications (Docker Multi-Stage Builds) | Deploying / Managing within AKS (Deployments / Services / ConfigMaps / Secrets / Helm / Node Pools/ Autoscaling / Ingress / Cluster-Level Troubleshooting)
• CI/CD / Release Engineering Building / Maintaining YAML-Based CI/CD Pipelines in Azure DevOps | Automated Builds / Testing / Security Scans / Docker Image Creation / Deployments to AKS / App Services | Blue-Green Deployments / Feature Flags for Zero-Downtime Releases
• Azure Platform Services Integration Integrating Core Azure Services into .NET Applications (App Services / Azure Functions / Service Bus / Event Grid / Azure Monitor / Application Insights with Custom Telemetry / Distributed Tracing / Metrics)
• IaC / Terraform Developing / Managing Terraform-Based Infrastructure (AKS / VNETs / Private Endpoints / Service Bus / SQL Database / Storage) Aligned with Application Development | Scripting (PowerShell / BASH / Python)
• Identity / Security (Azure) Implementing Secure Patterns in .NET Services (Entra ID / Managed Identities / RBAC / OAuth 2.0 / JWT / Azure Key Vault / Polly Retry Policies / Private Endpoints / VNET Integration) | SOX Compliance / Secure Authentication Flows | Debugging Post-Migration Identity Issues (Claims / Tokens / Conditional Access)
• Observability / SRE Practices Applying SRE Principles within Development | Production Troubleshooting / Root-Cause Analysis / Iterative Improvements on .NET Applications in Azure | Custom Telemetry / Logging / Performance Monitoring (Application Insights / Log Analytics / Alerting)
• Database Design / Optimization Oracle / MS SQL Server / NoSQL (Cosmos DB) | Hands-on SQL Scripting | Designing / Evolving Database Schemas | Query Performance Analysis / Indexing / Tuning (Post-Migration Behavior Changes, etc.)
• Problem Solving / Full SDLC Ownership End-to-End Ownership of Complex Features / Improvements | Architecture Decisions / Implementation / Production Debugging / Refactoring / Post-Deployment Enhancements | Developer-First Mindset for Building Automation Tools / Reliability Frameworks

PREFERRED (not required)

• Azure Governance / Best Practices Azure Policy / GitHub Copilot Context / Embedding SRE Practices Early in Development Lifecycle
• Architecture Frameworks (Familiarity) Azure Well-Architected Framework (Reliability / Operational Excellence)
• Advanced AKS / Hybrid Exposure to Advanced AKS Topics (Cluster Autoscaling / Service Mesh / Cost Optimization) / Hybrid Scenarios (Azure Arc)
• AI / Automation Enablement Driving Adoption of AI-Powered Tools (GitHub Copilot) to Improve Developer Productivity / Code Quality