Alhassan Alfarran — Full-Stack & Python Developer, Moscow

Alhassan

About

Three languages. One full stack.

Arabic is my first language and English (C1) my professional one. I studied in Russia — a Bachelor's at Ural Federal University in Yekaterinburg, then a Master's at NUST MISIS in Moscow. I like owning a feature end to end: the data model, the API contract, the permission rules and the Excel export a non-technical colleague can run on their own.

The short story.

Where it started
In 2020 I took on my first freelance clients — scoping, estimating, delivering and supporting the work myself.
Building with real teams
At Avenue Group I designed and shipped the OKKP platform from scratch as Chief Full-Stack Developer, from architecture to deployment and production support.
Where I am now
Today I build RAG search over engineering documents at Elektroservis in Moscow — FastAPI, OCR, sentence-transformers and FAISS — with a Master's from NUST MISIS (2024–2026) behind me.

How I work

No process theatre — just the habits I rely on.

Code review
Small, focused diffs. I comment on intent and trade-offs, not style, and block on correctness and clarity — not taste.
Definition of done
Tested behaviour, visible in production, documented for the next person, no known sharp edges left behind.
When things break
Contain the problem first, then write down honestly what happened. The fix is the easy part — changing the system so it doesn't repeat is the work.
Documentation
A short README per service: what it does, how to run it, where it can break. Updated with the change, not after.

Experience

Where I've worked.

Freelance since 2020 and three companies — from client projects to a platform built from scratch, and the RAG search I'm building now.

Jan 2026 — Present
Currently
Elektroservis
Python / Full-Stack Developer
Moscow
Building a document search and RAG system for engineering and technical documentation.
Building a document search and RAG system for engineering and technical documentation.
- Built ingestion for PDF, Word and Excel files, with OCR for scanned documents.
- Implemented hybrid search — keyword matching plus semantic retrieval (sentence-transformers + FAISS) — to improve answer relevance.
- Developed FastAPI ingestion and query pipelines that connect parsing, indexing, retrieval and LLM-assisted answers.
Stack: Python · FastAPI · OCR · sentence-transformers · FAISS · LLM
Jan 2025 — Dec 2025
Avenue Group
Chief Full-Stack Developer
Moscow · on-site
Designed and shipped OKKP from scratch — a full-stack operational management platform.
Designed and shipped OKKP from scratch — a full-stack operational management platform.
- Architected it end to end: React + TypeScript SPA, Node.js / Express REST API, PostgreSQL + MongoDB.
- Built employee management, violation tracking and reporting dashboards with role-based access control and audit logs.
- Built Excel exports that let non-technical staff produce audit-ready datasets on their own.
- Added secure media uploads (Cloudinary, Multer); owned deployment and production support.
Stack: React · TypeScript · Node.js · Express · PostgreSQL · MongoDB · Cloudinary · Tailwind CSS
Oct 2024 — Jul 2025
Junzi Tech Solutions
Full-Stack Web Developer
Delivered full-stack features for client web applications in Agile teams.
Delivered full-stack features for client web applications in Agile teams.
- Cut the average response time of a critical API endpoint by ~60% with a caching layer and query refactoring.
- Designed REST APIs with consistent validation, error handling and response contracts; reviewed teammates' code and took part in sprint planning.
Stack: Node.js · Express · MongoDB · React
Jan 2020 — Present
Freelance
Full-Stack Developer
Remote
Projects for international clients, alongside my studies and full-time roles.
Projects for international clients, alongside my studies and full-time roles.
- React / TypeScript web apps and dashboards; Python / FastAPI backends.
- Pathwise — a FastAPI + PostgreSQL application with an async backend.
- Owned the full client lifecycle: scoping, estimation, delivery and post-launch support.
Stack: React · TypeScript · Python · FastAPI · PostgreSQL

Education

2024 — 2026
Master's — Computer and Information Sciences
NUST MISIS, Moscow
2020 — 2024
Bachelor's — Computer Science
Ural Federal University, Yekaterinburg

Certifications

Server-side Development with Node.js, Express and MongoDBCoursera
Introduction to SQLCoursera, University of Michigan
Understanding and Visualizing Data with PythonCoursera, University of Michigan
Machine Learning for AllCoursera, University of London
Programming with Google Go SpecializationCoursera

Selected work

Projects I've built.

Projects from my roles — private code, so you see the architecture — plus open-source tools with live demos.

Work projects

03

Work project · Avenue Group

Chief Full-Stack Developer · From scratch

OKKP Operations Platform

An operational management platform I designed and shipped from scratch: employee management, violation tracking and reporting dashboards, with role-based access and audit logs.

Result: Shipped to production; non-technical staff export audit-ready Excel datasets on their own.

Tech stack: React · TypeScript · Node.js · Express · PostgreSQL · MongoDB · Cloudinary · Tailwind CSS

Read case studyPrivate code · NDA

Work project · Elektroservis

Current role · RAG document search

Engineering Document Search (RAG)

Search and RAG over engineering and technical documentation — PDF, Word, Excel and scanned files — with hybrid keyword + semantic retrieval behind a FastAPI service.

Status: In development at Elektroservis — one search across PDF, Word, Excel and scanned engineering documents.

Tech stack: Python · FastAPI · OCR · sentence-transformers · FAISS · LLM

Read case studyPrivate code · NDA

Work project · Freelance

Freelance client work · React dashboards

Client KPI Dashboards

Interactive KPI dashboards for a freelance client, bringing several data sources together behind one Node.js API.

Result: Filterable KPIs in one place instead of hand-refreshed reports.

Tech stack: React · Node.js · REST API

Read case studyPrivate code · client-owned

Open-source projects

04

Open source · Uptime & SLO monitoring

Pulseboard

Self-hosted HTTP uptime monitoring with automatic incidents, SLO error budgets, a public status page and Prometheus metrics — all in one container.

Built in: Tests cover incident recovery, SLO math, access control and SSRF protection. Live demo; one docker compose command.

Tech stack: Python · FastAPI · SQLite · Docker · Prometheus

Read case study Live demo GitHub

Open source · Release operations & DORA metrics

DeployLedger

A self-hosted release-operations control plane: it ingests deployment events, computes DORA metrics and helps decide whether the next release is safe to ship.

Built in: Computes all five DORA metrics from deployment events, with a tamper-evident audit chain. Live demo; CI tests the code and scans the images.

Tech stack: Python · FastAPI · React · PostgreSQL · Docker · Terraform · Prometheus

Read case study Live demo GitHub

Open source · Just-in-time access control

Gatehouse

A self-hosted access request and approval control plane: narrowly scoped, short-lived access, with every decision recorded in a verifiable audit chain.

Built in: Idempotency keys, optimistic locking and a hash-linked audit chain per workspace. Live demo and public OpenAPI.

Tech stack: Python · FastAPI · React · TypeScript · PostgreSQL · Docker · Terraform

Read case study Live demo GitHub

Open source · Webhook debugging in Go

Webhook Workbench

A private, self-hosted workbench to capture, inspect, verify and safely replay webhooks — one dependency-free Go binary with the UI built in.

Built in: Tests cover redaction, signature checks, replay and SSRF defences. Checksummed release binaries; live sandbox.

Tech stack: Go · net/http · Docker · HMAC-SHA-256

Read case study Live demo GitHub

Full project archive

Performance deep dive

Junzi Tech Solutions

Cutting a critical endpoint's response time by ~60%.

Queries first, cache second: I refactored the MongoDB queries behind a critical Node.js / Express endpoint, then cached repeated reads, without changing its response contract.

Result

~60%

lower average response time on a critical API endpoint

Average response time, critical endpoint (relative scale)

01Problem
A critical endpoint in a client web application (Node.js / Express on MongoDB, React front end) was too slow, and the fix had to keep its response contract unchanged.
02Solution
I refactored the database queries behind the endpoint and added a caching layer for repeated reads. Validation, error handling and the response contract stayed consistent with the rest of the REST API.
1. Client
  React
  : React front end.
3. API
  Express
  : Node.js / Express endpoint with consistent validation and error handling.
5. Cache
  hit · returns early
  : Caching layer for repeated reads.
6. miss
7. Data
  MongoDB
  : Refactored MongoDB queries.
03How I approach performance work
- Measure first — the real cost is rarely where you look first.
- Fix the query, then cache: a cache on top of a slow query only hides the problem.
- Keep the response contract stable, so a performance fix ships like any other change.

Capabilities

Stack I reach for.

What I work with, grouped by layer — from interfaces to delivery.

Frontend: React, Next.js, TypeScript, JavaScript, Tailwind CSS, Vite, Framer Motion
Backend: Node.js, Express, FastAPI, Python (async), REST API design, Auth & RBAC, Audit logging
AI & Search: RAG pipelines, LLM integration, sentence-transformers, FAISS, Hybrid search, OCR, Pandas & NumPy
Data & Storage: PostgreSQL, MongoDB, Redis, SQL, Cloudinary, PDF / Word / Excel parsing
Delivery & Tools: Git & GitHub, Docker, CI/CD, GitHub Actions, Linux, Kubernetes (basics), Vercel, Jira & Scrum

Services

What I can build for you.

For teams that need an internal platform, a reporting dashboard or search over their own documents — designed and built end to end, from the database to the UI. Contract or freelance, remote or in Moscow.

Full-stack web platforms
Admin panels and internal tools with authentication, role-based access, audit logs and clean REST APIs — like OKKP.
Example: OKKP
AI document search
RAG over PDF, Word and Excel, OCR for scans, hybrid keyword + semantic search and FastAPI pipelines.
Example: engineering document search (RAG)
Dashboards & reporting
KPI dashboards, charts and Excel exports your team can use without asking a developer.
Example: client dashboards
API performance & backend
Profiling slow endpoints, caching and query refactoring, consistent validation and error handling.
Example: the ~60% case study
Multilingual & RTL interfaces
English, Russian and Arabic UIs with real right-to-left layouts, like this site.
Example: Smart Platform (EN / AR)

Discuss a project

GitHub

More on GitHub

Tools, experiments and earlier work — hand-picked and grouped by area.

@kyan9400

Live
Stockroom Ledger (Live)
Transactional inventory operations with audited cycle counts, idempotent writes, and optimistic concurrency.
Python
GitHub
Live
MyGPT (Live)
Readable character-level transformer with reproducible training, safe checkpoints, and an interactive causal-attention explorer.
Python
GitHub
Live
LeaseQueue (Live)
Durable background jobs with atomic leases, retries, idempotency, and dead-letter recovery.
Python
GitHub

Full project archive

Contact

Hiring, or have a project? Let's talk.

Hiring for a full-stack, Python or AI role — or planning a web app, a dashboard or AI document search? Tell me what you need. Telegram is the fastest way to reach me.

Telegram@hassan775775

Email mekyan775909@gmail.com

Download CV

English Русский العربية

Available immediatelyMoscow on-site/hybrid or remote · full-time or contract

I reply within 48 hours — faster on Telegram.

LinkedIn GitHub

Web platforms & AI search, built end to end.

Three languages. One full stack.

The short story.

How I work

Ask my CV a question.

Where I've worked.

Elektroservis

Avenue Group

Junzi Tech Solutions

Freelance

Education

Certifications

Projects I've built.

Work projects

OKKP Operations Platform

Engineering Document Search (RAG)

Client KPI Dashboards

Open-source projects

Pulseboard

DeployLedger

Gatehouse

Webhook Workbench

Cutting a critical endpoint's response time by ~60%.

01Problem

02Solution

03How I approach performance work

Stack I reach for.

What I can build for you.

Full-stack web platforms

AI document search

Dashboards & reporting

API performance & backend

Multilingual & RTL interfaces

More on GitHub

Stockroom Ledger (Live)

MyGPT (Live)

LeaseQueue (Live)

Hiring, or have a project? Let's talk.

Send a message

Three languages. One full stack.

The short story.

How I work

Ask my CV a question.

Where I've worked.

Elektroservis

Avenue Group

Junzi Tech Solutions

Freelance

Education

Certifications

Projects I've built.

Work projects

OKKP Operations Platform

Engineering Document Search (RAG)

Client KPI Dashboards

Open-source projects

Pulseboard

DeployLedger

Gatehouse

Webhook Workbench

Cutting a critical endpoint's response time by ~60%.

01Problem

02Solution

03How I approach performance work

Stack I reach for.

What I can build for you.

Full-stack web platforms

AI document search

Dashboards & reporting

API performance & backend

Multilingual & RTL interfaces

More on GitHub

Stockroom Ledger (Live)

MyGPT (Live)

LeaseQueue (Live)

Hiring, or have a project? Let's talk.

Send a message