Nik Korablin

Full-stack JavaScript Engineer

Summary

Experienced Engineering Manager and full-stack JavaScript engineer with a proven track record of leading high-performing teams and delivering scalable, data-driven solutions. Skilled in React, Node.js, TypeScript, and cloud-native architectures. Adept at optimizing search technologies, building robust A/B testing frameworks, and driving product innovation. I value writing clean, testable code and mentoring engineers to achieve their full potential.

Work Experience

HubSpot

Front-end Tech Lead II, May 2025 - present

  • Lead a team of 5 engineers building a centralized permissions platform used across multiple product surfaces
  • Define frontend architecture and technical strategy for a complex, rules-driven system governing user access and feature entitlements
  • Partner with product, design, and backend teams to create intuitive UI abstractions over complex permission logic, improving usability and reducing implementation friction across teams
  • Led development of an AI-driven permissions platform that allows administrators to define and manage access control through natural language, reducing complexity and improving usability of a traditionally technical system

The Knot

Engineering Manager, November 2021 - May 2025

  • Led a team of 6 engineers building a large-scale React eCommerce platform serving millions of users
  • Designed and implemented an internal A/B testing platform, doubling experiment throughput and enabling product and marketing teams to independently launch and analyze experiments
  • Led migration from Algolia to ElasticSearch, reducing infrastructure cost and increasing flexibility in search customization
  • Architected a variant-based data model that unlocked new product capabilities and simplified downstream integrations
  • Collaborated closely with product, design, and business stakeholders to align technical solutions with growth and user experience goals

iFIT

Technical Lead, April 2018 - October 2021

  • Led development of React-based applications for embedded fitness devices, delivering performant and intuitive user experiences
  • Designed and built serverless microservices (Node.js, AWS Lambda) supporting real-time data processing and device communication
  • Established best practices for testing and maintainability across frontend and backend systems

Stealth-mode fintech startup

Senior Full-stack JS Engineer, January 2017 - March 2018

  • Built a real-time financial research platform from the ground up using React, Node.js, and Electron
  • Implemented live data streaming features for stock ticker updates and user interactions
  • Developed interactive chat functionality to support collaborative analysis workflows

WhoseYourLandlord.com

CTO, May 2016 - January 2017

  • Landlord review platform that facilitated feedback for renters, enabling better rental decision-making
  • Built the entire application from scratch
  • Built the platform with Ruby on Rails and React
  • Managed junior developers

Vanguard Group

Java Engineer, June 2013 - May 2016

  • Worked on a retail advice platform
  • Enterprise-scale Java application
  • AngularJS frontend
  • Wrote unit tests and end-to-end tests using Cucumber

WebTek

Front-end Web Developer, May 2008 - June 2013

  • Developed websites for small and large businesses
  • WordPress, e-commerce

Skills

Frontend

TypeScript, React, React Testing Library

Backend

Node.js, Ruby on Rails, Java

Architecture

Microservices, Serverless, Event-driven systems

Data & Search

Elasticsearch, Postgres, MongoDB, Algolia

Education

Temple University

September 2009 - May 2013