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Charles Ma

@charlesma1

Senior Software Engineer with 10+ years building scalable C# backend systems—delivering resilient microservices and deterministic workflows.

United States

Message

What I'm looking for

I’m looking to build efficient, resilient backend systems—microservices in cloud environments—where I can improve correctness, performance, and observability, and apply production AI/LLM capabilities to create deterministic workflows.

I’m a “Senior Software Engineer with 10+ years of experience building scalable backend systems using C#,” with deep expertise in ASP.NET Core, microservices architecture, and distributed systems. At Uniswap Labs, I built a C# (.NET 8) transaction intelligence platform with idempotent, retry-safe pipelines to guarantee correctness under reorg scenarios, and I redesigned portfolio analytics aggregation for large wallets using asynchronous streaming and parallel processing.

I also design production LLM systems, including an Azure OpenAI + Semantic Kernel investigation assistant with prompt templating, structured outputs, and fallback logic for deterministic financial workflows. From Magic Eden to AWS, I’ve improved reliability and performance with event-driven patterns (CQRS, DDD), Kafka, Azure Service Bus, Kubernetes, Redis caching, observability via OpenTelemetry/Serilog/ELK, and strong testing practices (xUnit, Moq, integration testing).

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Uniswap Labs

May 2025 - Present (1 year)

Built a C# (.NET 8) transaction intelligence platform for high-volume blockchain events, implementing idempotent processing, deduplication, and reorg-safe retry pipelines to ensure correctness. Improved portfolio analytics performance by redesigning aggregation with async streaming and parallel processing, and delivered a deterministic LLM investigation assistant using Azure OpenAI and Semantic Ke

C .NET 8+ASP.NET Core Microservices Idempotent Processing Event Sourcing Azure OpenAI Semantic Kernel OpenTelemetry IAsyncEnumerable

Software Engineer

Magic Eden

Jun 2022 - May 2025 (2 years 11 months)

Developed a C# (.NET 7) marketplace backend for NFT transactions, creating resilient ingestion pipelines with retry queues and eventual consistency models despite unreliable upstream blockchain APIs. Built Kafka-based high-throughput event processing with backpressure control, refactored services to CQRS (MediatR), and improved observability with Serilog and ELK.

C Kafka CQRS MediatR Redis EF Core Hangfire Serilog ELK Stack

Software Engineer

Luma Financial Technologies

Mar 2022 - Jun 2022 (3 months)

Built C# (.NET 6) APIs for structured financial products, implementing domain-driven validation and rule-based engines to meet strict requirements. Secured third-party integrations with OAuth2 token lifecycle management and optimized SQL Server queries using indexing strategies and stored procedures.

C OAuth 2.0 SQL Server Stored Procedures Performance Tuning Domain Driven Design Token Lifecycle Management Fluent Validation

Software Development Engineer

Amazon Web Services

Aug 2020 - Feb 2022 (1 year 6 months)

Built internal C# (.NET Core) tooling to automate cloud resource workflows, including state reconciliation and idempotent provisioning APIs to reduce configuration drift. Developed distributed backend components for orchestration with locking to prevent race conditions and created React + TypeScript dashboards to improve operational visibility.

C .NET Core AWS Distributed Systems React TypeScript Unit Testing xUnit Moq

Software Engineer Intern

BostonHacks

Nov 2016 - Aug 2020 (3 years 9 months)

Developed frontend features for event platforms using JavaScript and Bootstrap/jQuery, improving usability and responsiveness. Implemented backend APIs with Node.js and Express, connected frontend to backend via REST, and added Jest unit tests while helping debug production issues.