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I ship AI products that actually sell

I ship full-stack AI products: polished interfaces, APIs, and LLM systems that hold under load. Fast, reliable delivery that grows your product.

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  • Fixed estimates, no hidden fees
  • Weekly demos in sprints
  • 24h response time
  • NDA-friendly, remote worldwide
  • Source code & IP yours
  • Clear scope, no surprises
Languages TypeScript · Python · Go
Frontend React · Next.js
Backend Node.js
Infra Docker · AWS
AI LLM
Backends & infra PostgreSQL · Redis · MongoDB · GraphQL · REST · Kubernetes · Terraform · CI/CD · Linux · Docker · AWS
AI & data RAG · LangChain · Vector DBs · Prompt Engineering
API & testing gRPC · WebSockets · Microservices · Playwright · Jest · Cypress · Observability
  • 8+years of experience
  • 150+projects
  • 40+clients
  • 98%happy clients
developer.js 
const developer = {
  name: 'Alex',
  role: 'Full-stack Developer',
  stack: ['React', 'Node.js', 'Go'],
  ai: ['LLM', 'RAG', 'Agents'],
  focus: 'AI-first products & UX',
  remote: true,
  openToWork: true
};
LLM React Agents
Full-stack developer working with code

About me

I'm a programmer who loves writing clean code and building understandable architectures. Over 8 years I've gone from slicing landing pages to designing distributed systems that handle hundreds of thousands of requests per minute.

I work with product teams end to end: from problem research and prototyping to release, monitoring and support. I believe good engineering is not just code — it's honest deadlines, measurable results and comfortable communication.

  • LocationMoscow · remote worldwide
  • SpecializationFull-stack · Web · SaaS · AI/LLM
  • LanguagesRussian · English (B2)
  • Currently learningRust and edge computing
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years of experience
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How I can help

From idea and prototype to production and support

AI & LLM engineering

LLM-powered features, RAG pipelines, AI agents and tool loops. From prompt design and evaluation to production — cost-efficient, reliable, without hallucination surprises.

DevOps & Cloud

CI/CD, Docker, Kubernetes and cloud infrastructure. Reliable deploys, observability and cost-aware setups that stay maintainable as the product grows.

Bots & integrations

Telegram bots, webhooks and third-party integrations. Automate workflows, notifications and CRM glue so teams spend less time on manual ops.

Architecture & consulting

Technical audits, system design and MVP scoping. Clear trade-offs, a realistic roadmap, and hands-on help from prototype to production.

Web applications

SPA and SSR with React / Next.js: dashboards, marketplaces, customer portals. Clean UI, accessibility and fast load times.

Backend & API

Node.js and Go, REST and gRPC, database schema design, integrations with payment and external services.

DevOps & infrastructure

Docker, CI/CD, monitoring and alerting. I'll set up deployments so releases take minutes, not days.

Audit & consulting

Code review, performance optimization, legacy deep-dives and team mentoring — with a concrete action plan.

My projects

Selected work from recent years

CodeCritic — AI code review for GitHub PRs Live

CodeCritic — AI code review

A SaaS that reviews GitHub pull requests with AI: in the browser, as a GitHub Action and via REST API. Free tier, team features and an option to plug a custom LLM.

  • Automated review of every PR — before a human ever looks at it
  • Three integration paths: web UI, GitHub Action, API
Ruby Grape API PostgreSQL React LLM
code-critic.com ↗
MentionVox — AI search visibility for crypto and Web3 Live

MentionVox — AI search visibility

A GEO platform for crypto & Web3 brands: scores crawler health, structured data and mention likelihood in AI search versus competitors, with a free snapshot in about a minute.

  • Brand visibility scoring against competitors in ~1 minute
  • Multilingual product: English, German and more
Next.js TypeScript GEO / SEO LLM
mentionvox.com ↗

Latest writing

Notes on full-stack & AI/LLM engineering

· 5 min read

How I run 1–2 week sprints with demos

The sprint format I use with clients: fixed scope, weekly demo, honest estimates — and why it keeps projects predictable.

ProcessTeam Lead

All posts →

Work experience

Key milestones from recent years

2024 — present

TeamLead · FinTech

Leading development of payment products end to end: a team of 6 developers, weekly releases, on-call rotation.

  • Set up AI-assisted code review on every pull request: bugs caught before merge, incidents down 45%
  • Rewrote the reconciliation service: API response time dropped from 1.2s to 300ms
  • Mentoring two mid-level developers
React · Node.js · PostgreSQL · LLM
2020 — 2023

Senior Full-stack Developer · FinTech

Built microservices for a payment bus serving fintech products with strict reliability requirements.

  • Designed the payment service: 2M transactions per day, 99.95% SLA
  • Migrated a monolith to event-driven architecture (Kafka)
React · Go · Kafka · PostgreSQL
2018 — 2020

Frontend Developer · PixelWorks

Built interfaces for client projects: e-commerce stores, corporate portals, landing pages.

  • Created a design system that doubled the speed of building typical pages
  • Optimized loading: mobile performance improved 2.5x
JavaScript · Vue · SCSS · Webpack
2017 — 2018

Junior Developer · freelance

First commercial projects: WordPress websites and early SPAs. Started maintaining open-source pet projects around the same time.

HTML/CSS · JavaScript · WordPress

Skills

Technologies I work with every day

AI / ML / LLM

LLM integration 90%
RAG pipelines 85%
AI agents & loops 80%
Prompt engineering 90%
ML fundamentals 70%

Frontend

JavaScript 90%
TypeScript 85%
React / Next.js 85%

Backend

Node.js 80%
Python 75%
Go 70%

Data & infrastructure

PostgreSQL 80%
Docker / Kubernetes 75%
CI/CD 70%

Practices

Git / Code Review 90%
Testing 75%
Architecture 80%
Also working with: Redis MongoDB GraphQL Kafka OpenAI Anthropic LangChain Vector DB PyTorch AWS Terraform

Client reviews

What the people I've worked with say

"In two months Alex got our product in order: rewrote the slow part of the API and set up CI/CD. For the first time in a year, releases went out without incidents."
Emily CarterNDA
"A rare quality — he understands the business, not just the code. He proposed a solution that saved us a quarter of development time and a lot of stress."
James WilsonNDA
"We worked remotely across three time zones — communication was better than in an office. Always a clear status, risks and next steps."
Anna LangeNDA

FAQ

What does the process look like?

We start with a short call to break down the task and goals. Then you get an estimate with stages and timelines, followed by development in 1–2 week sprints with a demo at the end of each. You always see the status in the tracker and the current build.

How much does a project cost?

It depends on scope: a small MVP takes a few weeks of work, a full platform starts at a couple of months. After the brief I provide a fixed estimate per stage, with no hidden fees.

Do you work with legacy code?

Yes. I start with an audit: finding bottlenecks, risks and quick wins. Then — incremental refactoring without stopping the business, with tests covering the critical logic.

Do you support the project after release?

Yes, there's a technical partnership format: monitoring, dependency updates, backlog improvements and an SLA for response time. Alternatively, I hand the project over to your team with full documentation.

How quickly do you respond to messages?

During working hours — within a couple of hours, 24 hours at most. Communication agreements are fixed at the start: preferred channel, call frequency and time zone.

Get in touch

Ready for a new project or just want to discuss an idea? Tell me about your task — I'll get back with an estimate within 24 hours.

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