Gregory Golberg, Developer in Palo Alto, CA, United States
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Gregory Golberg

Verified Expert  in Engineering

Architect and Back-end Developer

Location
Palo Alto, CA, United States
Toptal Member Since
June 13, 2022

Gregory is an experienced technologist who firmly believes that engineering is about using the right tools to solve real-world problems. He is a passionate, hands-on generalist who enjoys wearing multiple hats. Gregory holds a computer science and engineering bachelor's degree from the Massachusetts Institute of Technology. He is also an AWS Certified Solutions Architect, a Certified ScrumMaster, and a Sun Certified Java Professional.

Software EngineeringDistributed SystemsBack-endCloudCloud ArchitectureRelational DatabasesJavaSQLETLJava EEMySQLAmazon Web Services (AWS)DatabasesREST APIsJSON

Portfolio

Around.Trade
Go, Next.js, OAuth 2, OAuth, Google Cloud Platform (GCP), Docker...
SteppeChange
Python 3, Google Cloud Platform (GCP), PostgreSQL, Firebase...
DoubleDoor
Vue 2, Vue, Amazon Web Services (AWS), Docker, Kubernetes, AWS Fargate...

Experience

Java - 18 yearsSQL - 18 yearsPython - 15 yearsMySQL - 15 yearsHTTP REST - 15 yearsAmazon EC2 - 8 yearsGo - 7 years

Availability

Part-time

Preferred Environment

Java, Python, SQL, Amazon Web Services (AWS), Kubernetes, Docker, Go, Scala, Linux, Google Cloud Platform (GCP)

The most amazing...

...project I've implemented from scratch is the ad demand-side platform deployed in AWS. Some writings about it can be found at blog.debedb.com/tag/opendsp/.

Work Experience

Advisor | Consultant

2023 - PRESENT
Around.Trade
  • Deployed the product on Amazon Web Services (AWS) and Vercel.
  • Added support for CockroachDB in addition to PostgreSQL.
  • Integrated OAuth provider Clerk for authentication/authorization.
Technologies: Go, Next.js, OAuth 2, OAuth, Google Cloud Platform (GCP), Docker, Amazon Web Services (AWS), Python 3, RabbitMQ, Amazon Elastic Container Service (Amazon ECS), AWS Lambda, AWS ALB, Amazon Elastic Container Registry (ECR), Docker Compose, Dependency Injection, PostgreSQL, CockroachDB, AWS IAM

Lead Platform Architect

2023 - PRESENT
SteppeChange
  • Worked on proprietary ad tech product involving geocoding.
  • Owned implementation of multiple greenfield projects from spec to implementation to deployment (GCP).
  • Designed and developed a microservice-based system for managing complex ad flows.
Technologies: Python 3, Google Cloud Platform (GCP), PostgreSQL, Firebase, Google Cloud Datastore, Docker, Kubernetes, FastAPI, APIs, REST, Cloud Architecture, Back-end Architecture, IT Project Management, Solution Architecture, Software Architecture, Distributed Systems, Back-end, Google Cloud, NoSQL, Python API, Asyncio, Relational Databases, Swagger, Data Feeds, Technical Architecture, Cloud Firestore, Web Servers, Cloud Deployment, System Architecture

Advisor | Consultant

2021 - PRESENT
DoubleDoor
  • Managed an offshore development team to deliver a website based on Vue and Node.js.
  • Consolidated disparate deployment using AWS, which resulted in savings and better latency.
  • Migrated Heroku to Fargate and MongoDB from MongoDB Cloud to AWS Fargate.
  • Helped to implement the advertising using Google (Ads API, Google Tag Manager, Analytics) and Facebook.
Technologies: Vue 2, Vue, Amazon Web Services (AWS), Docker, Kubernetes, AWS Fargate, Amazon S3 (AWS S3), Amazon EC2, Heroku, MongoDB, REST APIs, Google Ads, Google Ads API, Facebook Ads, Advertising Technology (Adtech), NPM, Node.js, Stripe API, Stripe, AWS Certified Solution Architect, Cloud Architecture, Back-end Architecture, IT, IT Project Management, CI/CD Pipelines, Lambda Functions, Software Architecture, Back-end, Python API, Amazon Cognito, Technical Architecture, Web Servers, Cloud Deployment

Chief Architect

2021 - 2022
Jobox.ai
  • Implemented best practices to improve velocity, code quality, and stability, e.g., CI/CD, automated unit and integration tests, code coverage, observability, monitoring and alerting, on-call rotation, vulnerability detection, load testing, and more.
  • Drove adoption of CI/CD, including automated regression tests and promotion, on-call, and monitoring/observability.
  • Led design, development, and delivery of new algorithms for efficient dispatching of home service professionals.
  • Cooperated with PMS and EMS to balance internal engineering needs (as above) and product-oriented projects. Developed technology roadmap and AWS cloud infrastructure plan to align with the product roadmap.
Technologies: Java, Spring Boot, PostgreSQL, Redshift, Python, Go, Postman, SQL, Lambda Architecture, Streaming Data, HTTP REST, Spring, Site Reliability Engineering (SRE), Docker, Linux, Apache Airflow, Amazon EC2, Redis, Git, APIs, Amazon Elastic Container Service (Amazon ECS), Amazon EKS, JavaScript, AWS Certified Solution Architect, Amazon Web Services (AWS), AWS Cloud Architecture, Team Leadership, Jira, GitHub, Node.js, Management, Architecture, DevOps, Data Engineering, ETL, Cloud, Microservices, Databases, Cron, CSV, REST APIs, JSON, Technical Leadership, Software Design, Cloud Architecture, Back-end Architecture, AWS Lambda, CI/CD Pipelines, Lambda Functions, Software Architecture, Java EE, Distributed Systems, Back-end, NoSQL, Python API, Relational Databases, Amazon Cognito, Swagger, Technical Architecture, LaunchDarkly, Algolia, Cloud Firestore, Web Servers, Cloud Deployment, System Architecture

Principal Software Engineer

2020 - 2021
AppLovin
  • Joined when AppLovin acquired MZ and also integrated MZ's (the acquired company) existing RTB bidder functionality with AppLovin.
  • Worked on green-fielding a non-RTB DSP demand-side platform for partners' use.
  • Took over ETL/data pipeline projects and associated tooling.
Technologies: Spark, Java, Scala, Python, Apache Airflow, HTTP REST, Redshift, SQL, Docker, Linux, Git, AWS Certified Solution Architect, GitHub, Architecture, Data Engineering, ETL, Cloud, Databases, CSV, JSON, Advertising Technology (Adtech), Google Ads, Google Ads API, Facebook Ads, Facebook SDK, Facebook Ads SDK, Software Design, Lambda Architecture, Distributed Systems, Back-end, NoSQL, Relational Databases, Data Feeds, API Integration, Web Servers

Staff Software Engineer

2019 - 2020
MZ (acquired by AppLovin)
  • Led maintaining and improving a core marketing and growth engineering functionality, real-time bidder (RTB), accountable for millions of queries per second and millions of dollars spent monthly.
  • Operated on the architectural guidance within the product and across teams, including introducing regression testing and ad hoc AWS querying to supplement on-premise clusters for business users and data science.
  • Accepted some of the previously external operations roles to become complete product owners, including migration from on-premise to cloud (AWS) and adding DevOps automation.
  • Created a lakehouse using Glue and Athena to supplement Hadoop (in AWS) and Vertica (on-premises) for business users and data science.
  • Liaised with relevant teams such as release engineering, DevOps, ad operations, and data science.
Technologies: Java, Hadoop, Apache Pig, Apache Airflow, Python, Lua, NGINX, Amazon Athena, AWS Lambda, AWS Glue, Amazon EC2, Vertica, MySQL, HTTP REST, Spring, Site Reliability Engineering (SRE), SQL, Linux, Groovy, Git, APIs, AWS Certified Solution Architect, Amazon Web Services (AWS), AWS Cloud Architecture, Jira, GitHub, Architecture, DevOps, Data Engineering, ETL, Cloud, Microservices, Databases, Cron, CSV, REST APIs, JSON, Scalable Architecture, Technical Leadership, Software Design, Cloud Architecture, Back-end Architecture, Lambda Architecture, CI/CD Pipelines, Lambda Functions, Software Architecture, Java EE, Distributed Systems, Back-end, Orchestration, NoSQL, Relational Databases, Data Feeds, Technical Architecture, API Integration, Web Servers, Cloud Deployment, System Architecture

Software Development Engineer 3

2018 - 2019
Amazon
  • Worked on providing forecasts of available advertising inventory for customers who want to run advertising across the Amazon advertising network.
  • Implemented forecasting for private marketplaces in real-time bidding advertising scenarios.
  • Worked with the data science team to operationalize forecasting models.
Technologies: Java, Python, Hadoop, Amazon Elastic MapReduce (EMR), Apache Lucene, MySQL, Scala, HTTP REST, Redshift, SQL, Linux, Amazon EC2, Git, APIs, AWS Certified Solution Architect, Amazon Web Services (AWS), AWS Cloud Architecture, GitHub, Architecture, ETL, Cloud, Microservices, Databases, JSON, Scalable Architecture, Software Design, Java EE, Distributed Systems, Back-end, Orchestration, NoSQL, Relational Databases, Cloud Deployment

Founding Principal Engineer

2015 - 2018
Pani Networks
  • Joined the company as the founding engineer, producing initial prototypes for using Romana as a network layer for OpenStack.
  • Developed topology-aware IP address management (IPAM) module.
  • Produced and shipped editions from PoC/demos to 2.0, up to date.
Technologies: Go, Python, Docker, Kubernetes, OpenStack, HTTP REST, Linux, Amazon EC2, Git, APIs, Amazon Elastic Container Service (Amazon ECS), Amazon EKS, AWS Certified Solution Architect, Amazon Web Services (AWS), AWS Cloud Architecture, GitHub, Architecture, DevOps, Cloud, Microservices, REST APIs, Software Design, Back-end Architecture, Solution Architecture, Distributed Systems, Back-end, Orchestration, NoSQL, Relational Databases, Swagger, Technical Architecture, Web Servers, Cloud Deployment, System Architecture

Founder | CTO

2014 - 2017
OpenDSP
  • Architected, developed, and deployed the initial version of the real-time bidding (RTB) system for bidding on advertising.
  • Scaled the system, through architecture and deployment (AWS) to handle hundreds of thousands of qps.
  • Led further feature development and operation of the system by managing several teams, including server, UI application, technical ad operations, ops, and DevOps.
  • Worked on the company's acquisition by Social Reality.
Technologies: Java, Python, Groovy, Hadoop, NGINX, Lua, MySQL, Redis, HTTP REST, Site Reliability Engineering (SRE), SQL, Linux, Amazon EC2, Git, APIs, JavaScript, CTO, AWS Certified Solution Architect, Amazon Web Services (AWS), AWS Cloud Architecture, Team Leadership, GitHub, Management, Architecture, DevOps, ETL, Cloud, Databases, Cron, CSV, REST APIs, JSON, Scalable Architecture, Technical Leadership, Software Design, Cloud Architecture, Back-end Architecture, IT, IT Project Management, Lambda Architecture, CI/CD Pipelines, Solution Architecture, Software Architecture, Java EE, Distributed Systems, Back-end, Orchestration, NoSQL, Amazon RDS, MySQL Performance Tuning, MySQL Server, Relational Databases, Technical Architecture, Web Servers, Cloud Deployment, System Architecture

CTO

2010 - 2015
Adotube
  • Developed initial versions of the company's innovative video ad serving platform.
  • Grew the technical team to 30+ people, assuring running ad serving and technical support to customers on a global scale.
  • Led the technology aspect of a successful acquisition by Exponential Interactive (now VDX.tv).
Technologies: PHP, Python, MySQL, C, Business Intelligence (BI), HTTP REST, SQL, Linux, Amazon EC2, Redis, JavaScript, CTO, AWS Certified Solution Architect, Amazon Web Services (AWS), AWS Cloud Architecture, Team Leadership, Jira, GitHub, Management, Architecture, DevOps, ETL, Cloud, Databases, Cron, CSV, JSON, Scalable Architecture, Technical Leadership, Software Design, Cloud Architecture, Back-end Architecture, IT, IT Project Management, CI/CD Pipelines, Software Architecture, Distributed Systems, Back-end, NoSQL, Amazon RDS, MySQL Performance Tuning, MySQL Server, Relational Databases, Technical Architecture, Web Servers, Cloud Deployment, System Architecture

Founding Engineer | Team Lead

2006 - 2010
SnapLogic
  • Developed initial version of the GUI, enabling users to create data pipelines.
  • Introduced and maintained best engineering practices, such as CI/CD, code coverage, and more.
  • Played key roles in shipping releases 0.1 to 3.0 as well as pre-and post-sales support in the company's initial stages.
  • Took initiative in prototyping and demoing features I thought would benefit the product, including data pipeline debugger with the ability to step through data flow, and had them included in subsequent versions.
Technologies: Adobe Flex, Python, Java, Oracle, MySQL, PostgreSQL, CouchDB, SQL, Linux, APIs, JavaScript, Amazon Web Services (AWS), Team Leadership, Jira, Management, Architecture, ETL, Cloud, Databases, CSV, REST APIs, JSON, Scalable Architecture, Technical Leadership, Software Design, Back-end Architecture, Software Architecture, Java EE, Distributed Systems, Back-end, Amazon RDS, MySQL Server, Python API, Relational Databases, Data Feeds, Technical Architecture, API Integration, Web Servers, Cloud Deployment, System Architecture, Salesforce API

Senior Software Engineer

2005 - 2006
P&H Solutions
  • Worked on porting the Windows-based ASP and C++ web cash management system to the Jakarta EE platform.
  • Developed and open-sourced tools for automating similar projects, for ASP and JSP and VBScript and Java conversions.
  • Created, working closely with the chief architect, release engineering processes for these new products.
  • Developed a reproducible development environment to allow convenient IDE features to work with production-like deployment, thus improving engineers' experience.
Technologies: Jakarta Server Pages (JSP), Active Server Pages (ASP), Java, C++, Visual Basic, Oracle, SQL, Linux, Databases, Software Design, Java EE, Relational Databases

OpenDSP—Real-time Bidding and Data Management as PaaS

https://blog.debedb.com/tag/opendsp/
A fully hosted implementation of advertising demand-side platform (DSP) capable of doing real-time bidding (RTB) and including data management platform (DMP) and allowing marketers wishing to access the RTB traffic to do so by utilizing it as a platform.

Without the need to maintain the infrastructure to handle the traffic, this architecture allows users to load the user models into DMP and plugin pricing formulas, as Groovy scripts, and we take care of the rest.

Acquired by Social Reality: https://www.prnewswire.com/news-releases/srax-acquires-opendsps-demand-side-platform-300528934.html

Romana Project

https://github.com/romana
Romana is a network and security automation solution for cloud-native applications; it automates the creation of isolated cloud-native networks. Romana secures applications with a distributed firewall that applies access control policies consistently across all endpoints (pods or VMs) and services wherever they run.

Through Romana's topology-aware IPAM, endpoints receive natively routable addresses: no overlays or tunnels are required, increasing performance and providing operational simplicity. Because IP addresses are assigned with network topology in mind, routes within the network are highly aggregated, reducing the impact on networking hardware and allowing more secure configurations. It supports Kubernetes and OpenStack clusters, on-premise or on AWS.

Wildboard

https://blog.debedb.com/2014/06/07/a-post-mortem-of-a-project-wildboard/
The project is about a community cork bulletin board: a friend seen in churches, coffee shops, libraries, and more, reinvented for the modern age. It includes a touch screen and mobile capability while retaining the hyper-local ethos; ad tech for the community.

Dbdb | Cross-Language Debugging Framework

https://db-db.sourceforge.net/aup.html
An Eclipse plugin allows for single stack debugging of multi-language programs; for example, call an Oracle stored procedure from Java and step in the debugger from Java into PL/SQL. This action uses JPDA, Java Platform Debugger Architecture.

Languages

Java, SQL, Python, Go, PHP, Scala, Lua, Groovy, C, Active Server Pages (ASP), C++, Visual Basic, Python 3, JavaScript

Libraries/APIs

REST APIs, Python API, Asyncio, Apache Lucene, Node.js, Vue 2, Vue, Google Ads API, Facebook SDK, Stripe API, Stripe, Salesforce API

Tools

GitHub, Cron, MySQL Performance Tuning, Eclipse RCP, Git, Jira, LaunchDarkly, Apache Airflow, NGINX, Amazon Athena, AWS Glue, Amazon Elastic MapReduce (EMR), Postman, Amazon Elastic Container Service (Amazon ECS), Amazon EKS, AWS Fargate, NPM, Facebook Ads SDK, Amazon Cognito, RabbitMQ, Amazon Elastic Container Registry (ECR), Docker Compose, AWS IAM

Paradigms

ETL, Back-end Architecture, Lambda Architecture, DevOps, Microservices, Scrum, Agile, Business Intelligence (BI), Management, REST, Dependency Injection

Platforms

Amazon EC2, Amazon Web Services (AWS), Java EE, Linux, Algolia, Kubernetes, Docker, Apache Pig, AWS Lambda, OpenStack, Oracle, Eclipse, Android, Heroku, Google Cloud Platform (GCP), Firebase, AWS ALB

Storage

MySQL, Databases, JSON, NoSQL, Relational Databases, Cloud Deployment, PostgreSQL, MySQL Server, Vertica, Redis, Amazon DynamoDB, CouchDB, Redshift, Amazon S3 (AWS S3), MongoDB, Google Cloud Datastore, Google Cloud, Cloud Firestore, CockroachDB

Other

Software Engineering, HTTP REST, APIs, AWS Cloud Architecture, Architecture, Cloud, CSV, Scalable Architecture, Software Design, Cloud Architecture, Software Architecture, Distributed Systems, Back-end, Orchestration, Data Feeds, Technical Architecture, API Integration, Web Servers, System Architecture, CTO, AWS Certified Solution Architect, Team Leadership, Technical Leadership, CI/CD Pipelines, Amazon RDS, Computer Science, Scrum Master, Site Reliability Engineering (SRE), Streaming Data, Data Engineering, Windows 10, Advertising, Windows 10 Touchscreen, Touchscreens, Digital Kiosks, Cordova, Google Ads, Facebook Ads, Advertising Technology (Adtech), FastAPI, IT, IT Project Management, Lambda Functions, Solution Architecture, OAuth

Frameworks

Spring, Swagger, Spark, Hadoop, Adobe Flex, Jakarta Server Pages (JSP), Spring Boot, PhoneGap, Next.js, OAuth 2

1992 - 1996

Bachelor's Degree in Computer Science

Massachusetts Institute of Technology - Cambridge, MA

JULY 2013 - JULY 2015

Certified Scrum Master

Scrum Alliance

JUNE 2013 - JUNE 2016

AWS Certified Solutions Architect Associate

AWS

APRIL 2003 - PRESENT

Sun Certified Java Developer

Sun Microsystems

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