Andrei Gusev

Andrei Gusev

Backend Developer

Node.js · MongoDB · APIs · MCP servers

Tokyo, Japan

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Summary

15+ years building for the web: high-tech startups, landing pages carried by heavy animation and visual work, and corporate portals where speed and security come first. On the back end I prefer Node.js and MongoDB — REST APIs, WebSocket, SSE streaming, JWT / OAuth, rate limiting, subscription billing — with 5+ years of Python, PHP, PostgreSQL and MySQL behind that. I have built search on Typesense, vector search and hybrid ranking. I run the infrastructure my own products sit on — deploys, migrations, monitoring — and I own the DevOps and CI/CD side of a project. I can deliver a project from scratch, and I can take over someone else's legacy code — including migrations across major framework versions. The interface is not foreign territory either: Vue / Nuxt and React / Next.js are daily tools. Recent years have been mostly AI: complex agents, MCP servers, search and recommendation systems built into products people use — and third-party integrations are routine, Anthropic, OpenAI, Google, Stripe, AWS and many others.

  • 15+Years of work experience
  • 95+Lighthouse on delivered sites
  • 3+ yrsAverage tenure per employer

Core Skills

Frontend

  • Vue 3
  • Nuxt 4
  • React
  • Next.js
  • TypeScript
  • JavaScript
  • SSR / SSG
  • PWA
  • Canvas
  • WebRTC
  • i18n
  • Core Web Vitals

Backend

  • Node.js
  • Python
  • PHP
  • REST API
  • WebSocket
  • SSE / streaming
  • JWT / OAuth
  • Rate limiting
  • Stripe

Data & Infra

  • MongoDB
  • PostgreSQL
  • MySQL
  • Redis
  • Typesense
  • S3
  • AWS
  • Google Cloud
  • Firebase
  • Docker
  • CI/CD

AI

  • OpenAI
  • Anthropic
  • Google Vision
  • AI agents
  • MCP servers
  • RAG
  • Embeddings
  • LangChain

Products

Menumiru

AI food assistant

An AI food assistant for exploring Japan. Snap any menu for an instant translation, discover restaurants matched to your taste, and chat about dishes, allergens and pairings.

Live on Web · iOS · Android

Memocore

AI memory layer

One shared memory for every AI client. Save context once and Claude, ChatGPT, Cursor and any MCP-capable tool can recall it across chats, IDEs and teams. Available as a product and as an API.

Works with Claude, ChatGPT & Cursor

Ancore

Open source

A production-ready Nuxt module that cuts setup and configuration time: form validation, server-state management, dialog system, internationalisation and a library of UI components. The base of every project we start.

Open source · 12k+ downloads on npm

Experience

Senior Full-Stack Developer

Feb 2022 — Present

The Doers Company / Anymaster · Remote · Cyprus

Core developer across all products. Each was built from the ground up, with the stack chosen to fit the job. Products: A no-code platform for building chatbots, with a complex pipeline system, a RAG knowledge base, third-party integrations and deployment across multiple channels. A high-load event platform with AI-driven matching between attendees. A home services marketplace in Cyprus.

  • Owned the architecture
  • Built every core system across the projects
  • Introduced AI and automation
  • Pixel-perfect implementation of designs
  • Full responsibility for the front end
  • SEO optimization
  • React
  • Vue
  • Nuxt
  • TypeScript
  • SSR
  • Supabase
  • Socket.IO
  • Stripe
  • OpenRouter
  • SEO

Senior Frontend Developer → Team Lead

Apr 2017 — Mar 2022

Heyling · Remote · Russia

A management and recruitment platform, with several internal products built around it. Joined as a front-end developer and grew into leading the front-end team.

  • Built the web application from scratch and owned it as the product grew.
  • Built the desktop client on Electron, and the browser extension alongside it.
  • Led the front-end team and was responsible for what it shipped.
  • Drove the migration of the whole product from Vue 2 to Vue 3.
  • Built the in-house pieces the product ran on — its own charting library, video and survey modules.
  • Vue 2
  • Vue 3
  • JavaScript
  • Python
  • Electron
  • Browser extensions

Full-Stack Developer

May 2015 — Apr 2017

Tensor · Saint Petersburg, Russia

An electronic document management platform used by businesses across the country.

  • Worked both sides of the stack — UI components in JavaScript, business logic in Python.
  • Responsible for the PostgreSQL layer: schema design and query performance.
  • Mentored junior developers on the team.
  • JavaScript
  • Python
  • PostgreSQL
  • Jenkins

Developer

2010 — 2015

Freelance · Remote

Websites and web apps for clients — hotel sites, online stores and the largest loyalty-card platform in the city — alongside my own projects and apps for the VK network.

  • Took every project end to end, from the first line of markup to the server it ran on.
  • Built and launched TopBloggers, an app that passed 100k installs.
  • Took prize places at hackathons with my own projects.
  • JavaScript
  • jQuery
  • PHP
  • MySQL
  • HTML / CSS
  • Canvas
  • Delphi

Education

Bachelor's in Information Technology

2010 — 2014

Kurgan Institute of Railway Transport · Russia

Languages

  • RussianNative
  • EnglishProfessional working proficiency
  • JapaneseLimited working proficiency