Andrei Gusev

Andrei Gusev

Tech Lead / Software Architect

Architecture · Team leadership · Delivery · AI strategy

Tokyo, Japan

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. I have led a front-end team, mentored juniors, and hired and onboarded the first engineer of my own company — and I still write code every week. I set the architecture and conventions of a multi-product codebase, plan what gets built and in what order, and pay down technical debt while it is still cheap: I carried a live product from Vue 2 to Vue 3 without stopping feature work. I can deliver a project from scratch, and I can take over someone else's legacy code — including migrations across major framework versions. Hands-on throughout: Vue / Nuxt and React / Next.js on the front end, Node.js and MongoDB on the back, with 5+ years of Python, PHP, PostgreSQL and MySQL behind that, plus the DevOps and CI/CD side of a project. Recent years have been mostly AI: agents, MCP servers, search and recommendation systems built into products people use.

  • 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

Experience

Founder & Developer

Jun 2024 — Present

An Co., Ltd. (Tokyo) · Ancodium Corp. (USA) · Tokyo, Japan

I run a software studio building websites, web and mobile apps and AI-powered products — both for clients and as our own products. From a quick MVP to a production product.

  • Own architecture, delivery, infrastructure and hiring across both companies.
  • Responsible for the studio's own products end to end: Menumiru, an AI food assistant for travellers in Japan covering nearly 3,000 restaurants, shipped across web, iOS and Android; and Memocore, a shared memory layer for AI agents over MCP that keeps context across every tool.
  • Set the shared foundation every project starts from — Ancore, an open-source Nuxt module with 12k+ downloads on npm.
  • Delivered 12+ client projects end to end — websites and platforms, mobile apps, and AI built into real business workflows.
  • Built a screen-reference catalogue of 66k+ references from scratch; it reached profitability on subscriptions, and AI integrations cut digitising a single app from a week to a few hours.
  • Built an auto-auction portal for ordering cars straight from Japanese auctions — around 1,000 vehicle orders placed by customers across several countries.
  • Vue
  • Nuxt
  • TypeScript
  • Node.js
  • MongoDB
  • AWS
  • Firebase
  • OpenAI
  • Anthropic
  • Google Cloud

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