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I’m a senior software engineer with 13+ years designing and delivering scalable, distributed systems across healthcare, fintech, and SaaS. I specialize in backend architectures (Java, .NET, Python, Node.js, Go), API-first microservices, and event-driven platforms, with strong frontend experience in React and Next.js. I’m adept at cloud-native deployments on AWS and Azure, DevOps automation, and building secure, compliant production systems. I enjoy translating complex business requirements into robust technical solutions and leading architecture initiatives that improve performance and resilience. I’ve led AI/LLM integrations using OpenAI APIs and LangChain, created near real-time data pipelines, and collaborated closely with product, security, and compliance teams to deliver HIPAA/SOC2-ready software. I’m motivated by fast-paced environments, continuous learning, and mentoring teams toward clean architecture and measurable impact.…I’m a senior software engineer with 13+ years designing and delivering scalable, distributed systems across healthcare, fintech, and SaaS. I specialize in backend architectures (Java, .NET, Python, Node.js, Go), API-first microservices, and event-driven platforms, with strong frontend experience in React and Next.js. I’m adept at cloud-native deployments on AWS and Azure, DevOps automation, and building secure, compliant production systems. I enjoy translating complex business requirements into robust technical solutions and leading architecture initiatives that improve performance and resilience. I’ve led AI/LLM integrations using OpenAI APIs and LangChain, created near real-time data pipelines, and collaborated closely with product, security, and compliance teams to deliver HIPAA/SOC2-ready software. I’m motivated by fast-paced environments, continuous learning, and mentoring teams toward clean architecture and measurable impact.

Christopher Ahn

Web Developer, Back-End Developer, Full Stack Developer, +2

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I’m a senior software engineer with 13+ years designing and delivering scalable, distributed systems across healthcare, fintech, and SaaS. I specialize in backend architectures (Java, .NET, Python, Node.js, Go), API-first microservices, and event-driven platforms, with strong frontend experience in React and Next.js. I’m adept at cloud-native deployments on AWS and Azure, DevOps automation, and building secure, compliant production systems. I enjoy translating complex business requirements into robust technical solutions and leading architecture initiatives that improve performance and resilience. I’ve led AI/LLM integrations using OpenAI APIs and LangChain, created near real-time data pipelines, and collaborated closely with product, security, and compliance teams to deliver HIPAA/SOC2-ready software. I’m motivated by fast-paced environments, continuous learning, and mentoring teams toward clean architecture and measurable impact.…I’m a senior software engineer with 13+ years designing and delivering scalable, distributed systems across healthcare, fintech, and SaaS. I specialize in backend architectures (Java, .NET, Python, Node.js, Go), API-first microservices, and event-driven platforms, with strong frontend experience in React and Next.js. I’m adept at cloud-native deployments on AWS and Azure, DevOps automation, and building secure, compliant production systems. I enjoy translating complex business requirements into robust technical solutions and leading architecture initiatives that improve performance and resilience. I’ve led AI/LLM integrations using OpenAI APIs and LangChain, created near real-time data pipelines, and collaborated closely with product, security, and compliance teams to deliver HIPAA/SOC2-ready software. I’m motivated by fast-paced environments, continuous learning, and mentoring teams toward clean architecture and measurable impact.

Available to hire

I’m a senior software engineer with 13+ years designing and delivering scalable, distributed systems across healthcare, fintech, and SaaS. I specialize in backend architectures (Java, .NET, Python, Node.js, Go), API-first microservices, and event-driven platforms, with strong frontend experience in React and Next.js. I’m adept at cloud-native deployments on AWS and Azure, DevOps automation, and building secure, compliant production systems. I enjoy translating complex business requirements into robust technical solutions and leading architecture initiatives that improve performance and resilience.

I’ve led AI/LLM integrations using OpenAI APIs and LangChain, created near real-time data pipelines, and collaborated closely with product, security, and compliance teams to deliver HIPAA/SOC2-ready software. I’m motivated by fast-paced environments, continuous learning, and mentoring teams toward clean architecture and measurable impact.

Skills

Experience Level

Expert

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Work Experience

Senior Software Engineer at LeewayHertz

January 1, 2024 - January 1, 2026

Led architecture and development of distributed, multi-tenant SaaS healthcare platforms using Java (Spring Boot), .NET Core, Python (Django/FastAPI), Node.js (Express), and Go, serving thousands of enterprise users in HIPAA-regulated environments. Designed domain-driven microservices with API-first contracts, implementing REST, GraphQL, and gRPC interfaces for cross-platform integrations. Built event-driven systems using Kafka, RabbitMQ, AWS SQS/SNS, and Redis streams to process high-volume voice, messaging, and transactional data in near real time. Architected secure backend layers with OAuth2, JWT, RBAC, and IAM-based access control to meet HIPAA, SOC2, and audit requirements. Implemented CRM and contact-center integrations via Salesforce APIs and telephony event ingestion pipelines. Engineered AI-powered automation pipelines leveraging OpenAI APIs and LangChain for automatic call summarization, compliance scoring, and analytics. Optimized performance and latency with API gateways, a

Full Stack Engineer at Utility

March 1, 2018 - December 1, 2023

Built and scaled fintech-grade backend services using Python, Go, Java, and Node.js to support brokerage workflows, fraud detection, transaction reconciliation, and compliance automation. Designed distributed microservices with strict consistency and fault tolerance. Implemented data integration pipelines ingesting multi-source transactional, clinical, and operational data into Azure SQL, Cosmos DB, PostgreSQL, and ERP-aligned schemas using Azure Functions (Blob/Queue/Timer triggers), REST APIs, and message-based workflows. Implemented streaming pipelines using Kafka and Redis to process millions of events daily for fraud monitoring and account verification. Developed secure financial APIs handling order execution, portfolio data, and case management under strict regulatory requirements. Automated infrastructure provisioning with Terraform and Kubernetes, ensured reproducible staging and production environments. Established observability with Datadog, Prometheus, and ELK stacking. Part

Software Engineer at Itransition

December 1, 2015 - January 1, 2018

Architected microservices-based solutions with API-first design, implementing RESTful and GraphQL interfaces, service discovery, centralized configuration, and event-driven communication using Kafka and RabbitMQ. Developed highly scalable backend systems using Python and C# (.NET) supporting analytics and recommendation platforms serving millions of users. Modernized legacy monolithic applications by refactoring them into containerized microservices deployed on AWS and Azure using Docker, Kubernetes (EKS/AKS), and Terraform-based infrastructure automation. Designed high-performance data layers using PostgreSQL, SQL Server, MongoDB, and Redis, implementing stored procedures, indexing strategies, partitioning, and query optimization to support high-throughput transactional workloads. Implemented secure authentication and authorization flows using OAuth2, JWT, OpenID Connect, Azure AD, and AWS IAM, supporting multi-tenant enterprise applications with strict compliance requirements. Built