GDJ
Geological drilling and hydrogeological investigation services for engineering and water projects
Highlights
- New on EvolcAdded 2026-11-13
About GDJ
GDJ performs drilling for engineering-geological and hydrogeological surveys using UGB drilling rigs. Services include core rotary drilling, equipped wells with perforated casing and gravel packing, and infiltration tests in wells to assess rainwater absorption.
The company is GDJ s.r.o., registered in Prague and founded in 2019. Its employee band is 1–9.
Product: Drilling for geological and hydrogeological surveys, equipped wells, and well infiltration tests.
Public contracts
Contracts GDJ signed since 1 Nov 2024, from the Slovak and Czech public contract registers. Values as published; amendments are not counted.
Customers
3 contracts with 2 buyers · 626k CZK
| Contracts | Value | |
|---|---|---|
| Město Varnsdorf | 1 | 396k CZK |
| Hlavní město Praha | 2 | 230k CZK |
Latest contracts
- 12 Jan 2026 for Město Varnsdorf · Smlouva o dílo · 396k CZK register
- 14 Nov 2025 for Hlavní město Praha · objednávka: Vizuální a geodetický monitoring skalních bloků · 135k CZK register
- 17 Mar 2025 for Hlavní město Praha · objednávka: Odstranění havarijních bloků skal na lokalitě Podstřešovické skály · 95k CZK register
Jobs at GDJ
Leadership
- Daniel Jirásko · Jednatel (Managing director)Source: business register
More construction companies
GEBAS domy
Realizes residential, commercial and industrial construction projects for investors, developers and business partnersNew on EvolcGEBMANN
Places self-employed construction tradespeople on developer projects in Germany and SlovakiaGecons
Engineering design, geotechnical monitoring and foundation works for construction projects, based in BrnoGEDOST
Construction company delivering homes, renovations and pergolas for private investors, developers and institutions in PragueNew on EvolcGEFOS
Surveying, engineering geodesy and cadastral services for construction and property projects in the Czech RepublicGEHER GEO
Engineering surveying and chief-surveyor services for road, bridge and civil construction sites in the Czech Republic
Website technologies
Tools and platforms detected on this company’s website, grouped by purpose. Dates record when Evolc observed them.
Backend
- PHPHigh confidence
- First detected
- Last detected
- Last checked
Detection evidence
- Response headerx-powered-by
- Response headerx-powered-by
Content management
- WordPressHigh confidence
- First detected
- Last detected
- Last checked
Detection evidence
- Website resourcedeclared script/iframe or software asset
Frontend frameworks
- jQueryHigh confidence
- First detected
- Last detected
- Last checked
Detection evidence
- Website resourcedeclared script/iframe or software asset
Hosting
- ApacheHigh confidence
- First detected
- Last detected
- Last checked
Detection evidence
- Response headerserver
- Response headerserver
Website detection does not establish a paid subscription or company-wide use. Tools loaded after consent or sign-in may be missed. “No longer observed” does not prove the company stopped using a tool.