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C# Senior Staff

Location:
Fort Worth, TX, 76104
Posted:
October 16, 2025

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Resume:

Eric K James

Senior Staff Engineer

*********.********@*****.*** +1-817-***-**** Fort Worth, TX

Summary

Senior Staff Engineer with 13 years of experience building distributed fault-tolerant infrastructure and high-performance APIs using C#, Python, TypeScript and cloud-native technologies. Experience in many industries, including social media (Meta), hedge funds, insurance, retail, and healthcare. Proven leader mentoring engineers and driving cross-team technical initiatives with a focus on reliability, security, and performance.

Skills

• Languages: C#, Java, Python, TypeScript, JavaScript, HTML, CSS, jQuery, Blazor WebAssembly

• Frontend: React, Redux, Next, Angular, Vue, Tailwind CSS, SASS, BootStrap, D3.js,

• Backend & APIs: .NET Ecosystem, Node, Django, ASP.NET Core, REST APIs, gRPC, Kafka, RabbitMQ, Redis

• Databases: PostgreSQL, MySQL, T-SQL, DynamoDB, Aurora, AzureSQL, SQL Server, Entity Framework Core

• Cloud & DevOps: AWS (Lambda, ECS, S3, CloudFormation), Docker, Kubernetes, Terraform, Azure DevOps

• CI/CD: GitHub, BitBucket, Maven, Jenkins, Nexus

• Observability: Prometheus, OpenTelemetry, Datadog, CloudWatch

• Architecture: Distributed systems, Event-driven architecture, Fault tolerance, Microservices

• Practices: Agile/Scrum, CI/CD (GitHub Actions, CodePipeline), TDD

• Tools: Git, Linux, Bash, Postman

• AI Tool: Zencoder, Cursor, Copilot

• Soft Skills : Team collaboration, Technical leadership, Mentorship, Cross-team communication

• Testing: NUnit, xUnit, MSTest

• Additional Technologies: Windows Forms, ETL

Professional Experience

Syberry - Senior Staff Engineer 04/2025 -

• Architected and maintained a high-throughput API gateway using C#, optimizing for latency, observability, and fault-tolerance across multiple services in a federated architecture.

• Led a cross-team initiative to migrate legacy monolith components into a distributed microservice system, reducing deployment time by 30% and improving on-call MTTR.

• Consulted a new product line to enable customers to sell existing inventory online through our platform using Angular, .NET, NgRx, Azure, and Nx.

• Engineered performance-critical modules, Packages in C#, optimizing core request-processing paths and integrating them with existing .NET services to improve throughput by 20 percent.

• Built scalable telemetry pipelines using OpenTelemetry and Prometheus, achieving 2-seconds alert latency and end-to-end traceability across microservices.

• Mentored 6+ engineers on best practices for writing idiomatic, testable C# code, with emphasis on memory safety, concurrency, and maintainability.

• Developed reusable observability middleware in C# for request tracing and health checks, adopted by 15+ microservices org-wide.

• Drove architectural discussions to standardize GraphQL federation schemas, error formatting, and versioning across business domains.

Meta - Senior Staff Engineer (E6) 06/2012 – 04/2025

• Implemented high-performance data ingestion services in C# processing billions of metrics per day with a 99.99 percent uptime SLA.

• Built internal platform SDKs to expose GraphQL and REST APIs for customer dashboards and alert rules improving feature velocity by 40 percent.

• Used .NET 5 Core, Docker containers, Azure App Service, and Kubernetes to create a health service application API. Constructed the build and release pipelines using Azure DevOps to serve multi- environment deployments consistently and reliably.

• Implemented core data-processing pipelines in C#, enhancing memory management and reducing average processing latency by 35 percent.

• Developed dynamic configuration loader in Python enabling zero downtime reloads for observability agents deployed to 100k plus nodes.

• Improved latency of distributed log processing by over 50 percent through redesign of worker fan- out pattern using Kafka and gRPC.

• Participated in on-call rotations and postmortem processes authored service run books and recovery playbooks across two major infrastructure tiers.

• Collaborated with product managers and SREs to define SLIs SLOs for internal APIs with real-time dashboards and proactive alerts.

Education

Texas Christian University (TCU),

Bachelor's Degree in Computer Science,

2008 – 2012 Fort Worth, TX

Certificates

• Certifications - Certified .NET Developer (2019)

• Certifications - Certified Python Developer (2020)



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