Senior / Lead .NET Software Engineer / SRE

Vaco Recruiter Services

Arlington (TX)

On-site

USD 144,000 - 176,000

Full time

14 days+

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Job summary

A staffing and consulting firm is seeking a Senior / Lead .NET Software Engineer / SRE in Arlington, TX. This hybrid role focuses on modernizing financial services platforms, requiring strong skills in .NET and Azure. The ideal candidate will bridge development and operations, applying best practices for automation and reliability in a multi-year digital transformation project. Candidates should possess extensive experience in cloud-native architectures, containerization, and CI/CD pipelines.

Qualifications

Hands-on expertise in C# / .NET Core development for production applications.
Experience in migrating legacy applications to cloud-native architectures.
Proficiency in building and managing CI/CD pipelines.

Responsibilities

Bridge development and operations with SRE practices.
Build tools for automation and reliability.
Conduct root cause analysis and debug .NET applications.

Skills

.NET Core Development

Cloud Modernization

Azure-Native Application Development

AKS / Containerization

CI/CD / Azure DevOps

Database Design / Optimization

Tools

Docker

Terraform

Job description

Senior / Lead .NET Software Engineer / SRE

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

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

Position Type: 6M C2H

Hourly / Salary: to $160K+ (based on experience level)

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-day 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 Requirements

.NET Core Development (hands‑on core expertise) – C# / .NET Core Development | Building / Maintaining Production‑Grade Applications / APIs / Services

Cloud Modernization – Migrating Legacy .NET Applications to Cloud‑Native Azure Architectures

Azure‑Native Application Development – Designing / Deploying / Supporting .NET Applications Directly in Azure with Real Production Workloads (Beyond Portal‑Based "Click‑Ops")

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 / Azure DevOps – Building / Maintaining YAML‑Based CI/CD Pipelines (Automated Builds / Testing / Security Scans / Docker Image Creation / Deployments to AKS / App Services)

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

Identity/ Security (Azure) – Implementing Secure Patterns (Managed Identities / Entra ID / RBAC / Secure Connectivity / Polly Retry Policies / Private Endpoints / VNET Integration) within .NET Services

Observability / SRE Practices – Applying SRE Principles within Development (Application Insights / Log Analytics / Alerting / Performance Monitoring / Production Troubleshooting)

Database Design / Optimization – Oracle / MS SQL Server / NoSQL (CosmosDB) | SQL Scripting (hands‑on) | Designing / Evolving Database Schemas | Performing Query Performance Analysis | Indexing to Deliver Scalable / Performant Services

Problem Solving / Collaboration – Driving Root Cause Analysis / Debugging for .NET Applications in Azure | Collaborating within SRE / Cross‑Functional Teams