Andres G.
Freelancer
Experience
Jul 2025 - Present
5 monthsWaren, Germany
HybridFreelancer
ALGK-BAUPRO
- Over 30 years of professional experience in national and international large-scale infrastructure, civil and specialized civil engineering projects
- Technical management, quality-assured execution and coordination of complex construction processes in LPH 6 to 9
- LPH 6 to 9:
- LPH 6: tender preparation, preparing structured bills of quantities, coordinating technical interfaces and quantity take-offs, supporting tender-ready documents
- LPH 7: participation in contract award, technical bid evaluation and price comparison, support in bidder communication and renegotiation, preparing award proposals
- LPH 8: site monitoring according to HOAI and VOB/B, supervising quality, schedules and costs, coordinating executing companies, progress control, acceptance, defect management, invoice checking, documentation
- LPH 9: project completion, warranty follow-up and technical support, condition assessments and verifications, final documentation and handover
- Shaft structures / underwater concrete slabs: bored pile shafts & diaphragm wall shafts (construction & fitting of large shafts up to 50 m deep and 35 m wide), underwater concrete slabs (anchored, construction under groundwater pressure, sealing / load-bearing under toughest conditions)
- Complex deep construction with diver assistance: visual inspection, installation parts and reinforcement under water
- Planning, construction supervision and execution: technical management, safety coordination, interface between excavation support and deep foundations
- Variation and claim management: identifying claims, developing technical and schedule-based claim foundations, support in processing and communication
- Management and optimization of complex construction processes: analysis of complex workflows, identification of technical bottlenecks and process disruptions, establishment and facilitation of lean management structures with Last Planner Method for process, schedule and resource optimization
- SiGe coordination according to site regulations: creation and updating of the SiGe plan according to RAB 30, advance notice and coordination of safety-relevant interfaces, integration of safety processes into schedule and construction planning
- Ground assessment and foundation consulting according to DIN 4020: evaluation of ground conditions, involvement in assessment of soil parameters and investigation results, settlement calculation, slope stability proof (Bishop / Janbu), bearing capacity and terrain failure safety proofs, cone of depression analysis, soil mechanics / rock mechanics
- Assignment profile: project assignments across Germany (DACH region), focus areas LPH 6–9, SiGe coordination, claim management, lean construction management, ground assessment, operational management, on-site consulting and technical project support
Apr 2025 - Aug 2025
5 monthsWeiden in der Oberpfalz, Germany
Project Director Infrastructure
VINCI GeoInfrastructure GmbH Deutschland
- Project: SuedOstLink, Lot C1, cable route Weiden i.Opf.
- 90 km cable trench
- 80 crossings (cut & cover / HDD / microtunnelling)
- over 65 large joint bays (muff houses)
- more than 10 soil treatment plants
Jan 2023 - Mar 2025
2 years 3 monthsHamburg, Germany
Project Director Tunnelling
IMPLENIA Construction GmbH
- Project: River Elbe Crossing, Hamburg
- TBM CREG EPB OD 4300 segment lining, 1.2 km
- 2 shafts with diaphragm walls Ø 23 m, depth 39 m
- buoyancy protection base plate with anchors
- steel structure for tunnel structure for district heating supply (pipe ID 800)
- passage through varying glacial sediments
- complex geology with up to 45 m water pressure
Jul 2019 - Dec 2022
3 years 6 monthsWaren, Germany
Division Manager & Head of Technical Department
Gebrüder Karstens GmbH & Co KG
- management of numerous projects in infrastructure, road and pipeline construction
- management of construction equipment
- responsibility for up to 60 employees
Nov 2018 - Jun 2019
8 monthsStockholm, Sweden
Project Director & Managing Director Tunnelling
Vianini Lavori Spa
- Project: E4 Stockholm Bypass (Lovön Samverkan AB JV)
- construction period: 71 months, start of drill and blast October 2017
- 5 Atlas Copco Boomer
- 2 stationary + 3 mobile crushing plants
- 2 concrete batching plants (120 m³/h)
- 9 million tonnes of granite hard rock excavation with vehicle conveyor belt system
- cross-section of access tunnel 80 m², 6 km
- cross-section of main tunnel 130 m², 14 km
- junctions up to 200 m² cross-section
- 8 ventilation chambers > 22,500 m³
- 8 shafts (raise boring 45–110 m, Ø 9.8 m)
- conventional tunnelling support (NATM) with anchors, wire mesh, shotcrete
- internal lining with precast concrete elements and roof membrane
Nov 2015 - Oct 2018
3 yearsIsrael
Project Director Tunnelling
Ed. Züblin AG, Tunnelling Division
- Project: Hard-rock double-gripper TBM OD 3900 (Atlas Copco), 13.5 km main tunnel
- Rail-bound muck removal
- Conventional support (NATM) with anchors, wire mesh, and shotcrete
- Sandvik MT 720 roadheader, 1.3 km access tunnel (29 m²)
- David Surge Shaft: vertical raise boring shaft/drill & blast OD 4000–5500, depth 290 m
- Excavation volume: 225,000 m³; responsible for up to 120 employees
Jun 2012 - Oct 2015
3 years 5 monthsDortmund, Germany
Senior Construction Manager Tunnelling
Royal BAM Group – Wayss & Freytag Ingenieurbau AG
- EPB machine ID 2800 with slurry system and central lubrication
- Start and end shafts with grout bored pile/diaphragm wall Ø 12–25 m, depth 17–36 m
- Reinforced concrete pipeline ID 1600 (OD 2100) to ID 2800 (OD 3600), total length 51 km with up to 9 intermediate stations
- Bending radius 500 m to ∞, max thrust 21,000 kN, crossings under highways, canals, and railways
- Alternating wet clays and groundwater pressure up to 3.6 bar
Dec 2011 - Jun 2012
7 monthsKolding, Denmark
International Senior Project Manager
MEYER & JOHN GmbH & Co. KG
- Pipe jacking with open shield and tunnel scraper
- Full-face cutter with slurry system and central lubrication
- Start and end shaft with sheet pile (13 × 7 × 16 m)
- Concrete pipes ID 3100 (OD 3800) and fiber reinforced ID 800 (OD 870), length 650 m, max thrust 8,000 kN
- Crossing harbor bay (sand, clay, peat), groundwater pressure 1.6 bar
Jul 2011 - Sep 2011
3 monthsNiestetal, Germany
International Senior Project Manager
MEYER & JOHN GmbH & Co. KG
- Full-face cutter with slurry system and central lubrication
- In-situ concrete start and end shaft (6 × 4.5 × 6 m)
- Concrete pipe ID 1200 (OD 1720), length 120 m, max thrust 8,000 kN
- Underpass of Autobahn A7, sandstone (70 MPa)
May 2011 - Jun 2012
1 year 2 monthsKassel, Germany
International Senior Project Manager / TBM Tunnel Manager
MEYER & JOHN GmbH & Co. KG
- Full-face cutter with slurry system and central lubrication
- In-situ concrete start and end shaft (6 × 4.5 × 6 m)
- Concrete pipe ID 1200 (OD 1720), length 1,050 m, 7 intermediate stations, max thrust 8,000 kN
- Inner-city location, limestone (40 MPa)
Oct 2010 - Jun 2011
9 monthsGothenburg, Sweden
International Senior Project Manager / TBM Tunnel Manager
MEYER & JOHN GmbH & Co. KG
- Manned TBM with slurry system and central lubrication
- In-situ concrete launch and reception shafts (9 × 6.5 × 12 m)
- Concrete pipe ID 2200 mm (OD 2680 mm), length 750 m, max thrust 12,000 kN
- Underpass under highway (6 lanes) and railway, groundwater pressure 0.6 bar
Apr 2010 - Sep 2010
6 monthsBad Nieuweschans, Netherlands
International Senior Project Manager / TBM Tunnel Manager
MEYER & JOHN GmbH & Co. KG
- Herrenknecht Direct Pipe system for 48″ PE-coated gas pipeline
- Thrust force 7,500 kN, bend radius 1,900 m, length 250 m
- Launch and reception shafts with sheet piling (Larson L 603)
Sep 2007 - Dec 2009
2 years 4 monthsTripoli, Libyan Arab Jamahiriya (Libya)
International Construction & Production Manager
STRABAG International GmbH / STRABAG S.E.
- Rehabilitation and expansion of Tripoli International Airport Road (TIAR), 2 × 4 asphalt lanes, 25 km
- Milling and asphalt paving: 260,000 t of asphalt, 50 km of Jersey concrete barrier
- Geotechnical investigation and setup of a limestone quarry with crushing plant
- Setup of an asphalt plant (240 t/h) and a concrete plant (60 m³/h)
- Logistics with 30 Mercedes-Benz trailers, staff camp for 350 employees
Apr 2004 - Jul 2007
3 years 4 monthsMadrid, Spain
International Construction Manager Tunnel Equipment
FOGTEC Brandschutz GmbH & Co. KG
- Design and installation of high-pressure water mist fire-fighting system (240 bar, 1.5 MW)
- Laying of 45 km of stainless steel pipes (ID 10–276 mm)
- Installation of smoke and fire detection system with Ethernet connectivity
Jan 1999 - Dec 2004
6 yearsGermany
Construction Manager
TBS-Bau GmbH
- Development and construction of residential areas: Fallersleben (250 single-family homes, 70 multi-family houses), Krohnskamp (Hanover, Expo 2000)
Jan 1996 - Dec 1999
4 yearsGermany
Project Manager
Heilit + Woerner Bau AG
- Pile foundation for Saale Bridge in Jena: 24 bored piles Ø 1,800 mm, depth 36 m
- Renovation and extension of runway at Erfurt Airport (110,000 m² + 35,000 m²)
- Cable trough underpasses at Erfurt Airport (1,500 m)
- A9 motorway near Blintendorf: 6-lane concrete carriageway (5,500 m)
- A4 motorway near Gera: Teufelstal embankment and bridge (350,000 m³)
- A71 motorway near Eisfeld: earthworks 450,000 m³
- Landfill liners (Meng.-Häm., Stollberg, Neuhof) with mineral surface liners (40,000–80,000 m²)
Jan 1993 - Dec 1996
4 yearsGermany
Project Manager Geotechnical Engineering
Jena-GEOS Ingenieurbüro GmbH
- Soil investigations and geotechnical foundation consulting
- Soil mechanics, rock mechanics, engineering geology, geosynthetics
- Soil laboratory management
Summary
With over 30 years of professional experience on national and international large-scale infrastructure, civil and specialized civil engineering projects, I offer comprehensive expertise and operational leadership. The project volumes handled regularly ranged in the double- and triple-digit million range. My focus is on technical management, quality-assured implementation and coordination of complex construction processes within LPH 6 to 9.
Work profile:
- Freelance project assignments throughout Germany // DACH region
- Focus areas: LPH 6–9, SiGe coordination, variation and claim management, lean construction management, ground assessment
- Technical project support on both sides of the award process – practical, solution-oriented, responsible
- Available for operational control, on-site consulting and technical project support
Languages
German
NativeEnglish
AdvancedSpanish
AdvancedArabic
ElementaryHebrew
ElementaryEducation
Oct 1986 - Jun 1992
Technical University of Clausthal
Master of Science in Geology, Engineering Geology · Geology · Germany
Oct 1984 - Jun 1986
University of Hamburg
Pre-degree examination · Business administration · Germany
Oct 1974 - Jun 1983
Gymnasium in Borgfelde
A-level exam, University entrance diploma · Hamburg, Germany
Certifications & licenses
Driving Licence B
Qualification according to RAB 30 (Modules B & C)
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