Brian Kim, Developer in New York, NY, United States
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Brian Kim

Verified Expert  in Engineering

Software Developer

New York, NY, United States
Toptal Member Since
August 5, 2017

Brian is a back-end developer who focuses on building resilient and scalable systems while achieving optimal response times. He enjoys writing code that makes strong abstractions on product requirements while thinking about infrastructure needs—producing software that is easy to deploy and maintain.


Array, LLC
Go, Fintech, TypeScript, Python
Go, TypeScript, React, XenServer
Security Scorecard
Amazon Web Services (AWS), Terraform, Go




Preferred Environment

Docker, Tmux, Vendor Independent Messaging (VIM), Linux

The most amazing...

...professional work I've done is to take ownership of a broken system component that nobody wanted to touch and make it bring value to the business.

Work Experience

Senior Software Engineer II

2022 - 2022
Array, LLC
  • Maintained multiple Gol and TypeScript-based back-end microservices for looking up, normalizing, and storing consumer credit reports from Equifax, Experian, and Transunion.
  • Migrated a legacy Python service to Go that wraps a C library for performing bureau report output normalization.
  • Migrated a back-end service to switch over connections for making next-generation Equifax requests from a legacy system.
Technologies: Go, Fintech, TypeScript, Python

Senior Software Engineer

2021 - 2022
  • Implemented a full-stack SSH keys feature in the platform's user settings.
  • Enhanced and fixed Kubernetes Autoscaler of a public cloud platform.
  • Maintained and balanced GPU allocation across three public cloud regions.
Technologies: Go, TypeScript, React, XenServer

Software Engineer

2019 - 2021
Security Scorecard
  • Rewrote a legacy back-end software to Go microservices.
  • Bootstrapped the AWS infrastructure using Terraform.
  • Defined the deployment and test procedures to migrate away from legacy software.
Technologies: Amazon Web Services (AWS), Terraform, Go

Software Engineer

2018 - 2019
  • Implemented a Kubernetes service IP advertisement over BGP.
  • Installed a selective IP address assignment based on Kubernetes node selectors.
  • Rearchitected a user registration workflow involving Zendesk and AWS Marketplace integration.
Technologies: Google Cloud Platform (GCP), Amazon Web Services (AWS), Kubernetes, Go

Software Developer

2016 - 2018
  • Reduced the workload of a service that would handle more than 10 million records a day down to a few thousand.
  • Bootstrapped the effort to Dockerize a portion of our monolithic codebase.
  • Built multiple RESTful services from scratch, including one that would handle nearly 1 million requests/min.
  • Investigated various AWS technologies for integration with the product.
  • Performed daily management of the development, testing, staging, and production environments from log monitoring to issue tracking/debugging.
Technologies: RabbitMQ, MongoDB, Docker, Python, Go

A full-stack inventory system that implements a Python Flask back-end wrapped around an SQLite database and an Android application as the mobile front-end client.

J&M Heating and Cooling Home Page Redesigned
Rewrote an HVAC company's home page to be mobile-friendly. Used Twitter Bootstrap to leverage the responsive design paradigm for supporting screens of all sizes.


Go, Python, Java, C++, C, SQL, TypeScript


Docker, Kubernetes, Amazon Web Services (AWS), Amazon EC2, Linux, Google Cloud Platform (GCP), XenServer


Flask, Bootstrap 3


AWS ELB, RabbitMQ, Azure Kubernetes Service (AKS), Google Kubernetes Engine (GKE), Terraform, Vendor Independent Messaging (VIM), Tmux, Amazon Elastic Container Service (Amazon ECS), NMap, Amazon Virtual Private Cloud (VPC)


Amazon S3 (AWS S3), MongoDB, Google Cloud


Concurrency, Scalability, Fintech





2011 - 2015

Bachelor's Degree in Computer Engineering

Villanova University - Villanova, PA, USA