Gideok Seong | Software Engineer

Software Engineer focused on full-stack SaaS products, data-driven systems, and practical automation.

I build production-oriented web applications using C#, ASP.NET Core, Next.js, SQL Server, background jobs, external APIs, and Linux infrastructure.

View Projects View Experience Contact Me

C#ASP.NET CoreNext.jsTypeScriptSQL ServerLinuxDockerAmazon Ads APIStripeOpenAI API

New Jersey, United States

Engineering Focus

Product engineering with practical ownership across API integrations, deployment, billing, and operational support.

Technical Summary

Hands-on product engineer with experience across ERP/data workflows, application operations, and production SaaS platform development.

Product Engineering

Built and operated SellerVisor with full-stack features, billing, automation, and production support.

Business Systems & Data

Supported ERP migration, workflow documentation, requirement gathering, and SQL reporting.

Operations & Monitoring

Worked on WebLogic operations, Prometheus/Grafana monitoring, alert workflows, and Dockerized logging tools.

Featured Project

Production-oriented SaaS platform for Amazon sellers focused on ads automation, reporting, and AI-assisted workflows.

SellerVisor

SellerVisor demonstrates hands-on product engineering across full-stack development, API integrations, billing, localization, and Linux-based production operations.

Built full-stack features for ad automation, reporting, campaign workflows, and account configuration.
Implemented background jobs for synchronization, long-running data processing, and report generation.
Integrated Stripe billing and multiple external APIs including Amazon, OpenAI, Perplexity, Gemini, and media-generation services.
Operated production deployments on Linux with ongoing troubleshooting, maintenance, and feature iteration.

C#ASP.NET CoreRazor PagesNext.jsTypeScriptSQL ServerLinuxDockerStripeAmazon Ads APIAmazon SP-API

Projects ->

Experience

SellerVisor

Full-Stack Product Developer

Independent SaaS Product Development | Remote

Built and operated a production-oriented Amazon seller SaaS platform with full-stack features, automation workflows, and API-driven operations.

Built SaaS features using C#, ASP.NET Core, Razor Pages, Next.js, TypeScript, SQL Server, and JavaScript.
Implemented background jobs for synchronization, automation, report generation, and API-driven processing.
Integrated Amazon SP-API, Amazon Ads API, Stripe, OpenAI, Perplexity, Gemini image APIs, and video generation APIs.
Deployed and maintained Linux-based production environments, including troubleshooting and iteration based on user feedback.

C#ASP.NET CoreNext.jsSQL ServerStripeAmazon APIsLinuxDocker

Samsung SDSA via Snelling

Application Operations & Monitoring Engineer

February 2024 - Present | New Jersey, United States

Supported WebLogic application operations, monitoring, alerting, logging workflows, and GenAI requirement discovery with stakeholders.

Supported WebLogic environments across multiple hosts and instances, helping monitor health and coordinate incidents.
Used Prometheus, Grafana, and Alertmanager to monitor infrastructure and application signals.
Set up Docker-based Elasticsearch and Kibana for log analysis and troubleshooting support.
Participated in GenAI initiatives by gathering business requirements and discussing document-processing use cases.

WebLogicPrometheusGrafanaAlertmanagerDockerElasticsearchKibanaGenAI Discovery

Beauty Plus

ERP Migration & Data Systems Analyst

April 2020 - February 2024 | Moonachie, New Jersey

Supported ERP modernization through workflow documentation, database handoff, requirement gathering, and SQL-based management reporting.

Coordinated migration requirements from a legacy C# console-based ERP system to a web-based third-party ERP platform.
Documented department workflows and business rules across Sales, Accounting, Warehouse, Purchasing, and Order Management.
Prepared database handoff materials and operational context for external development and migration validation.
Used SQL reporting to support management decision-making and operational review.

ERP MigrationSQL ReportingRequirements GatheringWorkflow DocumentationData Validation

Professional Experience ->