Codexworker

Custom Elasticsearch Development

I implement Elasticsearch for applications: design mappings for your query patterns, build search and aggregation endpoints, and set up indexing pipelines. Including migration from existing search or MySQL fulltext.

I'm a backend developer with 10+ years of experience across PHP, Go, MySQL and Elasticsearch. Recent work includes Cenoskop (30M+ products daily), Niftycent (US price intelligence), and facha.sk (Go backend). I build, fix and optimize backend systems that handle real data and real traffic.

What I Can Help With

Implement Elasticsearch for search, analytics and indexing.

Typical Problems

mapping design for queries search endpoint implementation aggregation design indexing pipeline relevance tuning migration from existing search

Relevant Experience

Implemented Elasticsearch for Cenoskop's product search — designed mappings for 30M+ documents, built search and aggregation endpoints, and set up the indexing pipeline from MySQL. Tuned relevance and performance in production.

What Is Included

mapping design
index setup
search/aggregation endpoints
indexing pipeline
basic relevance tuning

How It Works

We define the search requirements and data shape, design the mapping, build the endpoints and index a sample dataset. From €1,500.

Starting from €1,500

Initial Elasticsearch implementation for one entity type.

Frequently Asked Questions

MySQL fulltext to Elasticsearch?

Common migration — I design the ES mapping to match your queries, build the ingest pipeline, and provide a drop-in search endpoint.

Related Services

Other problems I help with.

Elasticsearch Optimization

Optimize Elasticsearch queries, mappings, indices and cluster configuration.

Details →

Elasticsearch Performance Tuning

Tune Elasticsearch for your specific query and data patterns.

Details →

Elasticsearch Migration & Upgrade

Migrate to or upgrade Elasticsearch with minimal downtime.

Details →

Systems I've Built

Relevant production work.

Job & Services Marketplace

facha.sk

Find a job or offer your services.

Built the Go backend — API, matching logic and deployment.

Job Marketplace Services Go
Secure Communication

Paidshield

Chat application with end-to-end encryption.

Built the backend and encryption layer for a secure chat application.

End-to-End Encryption Real-time Communication Security
Security Scanner

remotedaemon.com

Remote security scanner with ping and certificate checking.

Built the scanning daemon and monitoring backend.

Security Ping Certificate
DNS Security

Synopsee

A Cleaner, Safer Internet. Take control of your DNS. Block ads, trackers, and malicious sites with customizable profiles.

Built the DNS resolution backend and profile management system.

DNS Security Privacy
Price Intelligence Engine

Cenoskop / Levnobot

Crawler monitoring millions of products. Processing 30M products daily and comparing them.

Built and maintain the full crawling pipeline — from scraping through Elasticsearch indexing to price comparison.

Data Aggregation Scraping ElasticSearch
US Price Intelligence

Niftycent

Price intelligence engine for the US market. Processing large-scale product data.

Built the data pipeline and crawling infrastructure for large-scale US product monitoring.

Data Aggregation Scraping Big Data

Need Help With This?

Describe the problem in a few lines — I'll look at it and tell you what I think.

Discuss an Elasticsearch project