We are constructing the new S4 line for you
 

We are the S4-Team   

Working together for a common goal – the construction of the new line S4. This page names the key members of the project team. 

Peter Mantik is responsible for the S4 project's PR work. You can contact him by e-mail or phone at +49 (0) 40 3918 4449. 

Project lead

Bernd Homfeldt
Bernd HomfeldtHead of S4 & 
ABS Pinneberg-Elmshorn
Matthias Oetting
Matthias OettingHead of Financial 
Project Management S4

Assistance to the General Director

Katrin Richter
Katrin RichterSpecialist Project Management

Change Management & IPA Coaching

Catrin Yazdani
Catrin YazdaniSenior
Change Manager

Human Resources Resort

Annika Baller
Annika BallerHR Business Partner

Communication and Press

Elena Ahrens
Elena VollmersSpecialist 
Stakeholdermanagement
Lisa Schallwig
Lisa SchallwigSpecialist
Stakeholdermanagement
Malena Hintz
Malena HintzWorking Student 
Stakeholdermanagement

Peter Mantik
Peter MantikPress Officer Infrastructure Communications

Building Approval Procedure & Common Law Affairs

Nic Wetzel
Nic WetzelTeamlead 
Area & Property Management
(Section 2 & 3)
Volker-Roger Schweitzer
Volker-Roger SchweitzerArea & Property Management
(Section 1 & 2)
Franziska Diedrich
Franziska DiedrichArea & Property Management
(Section 1)
Farith Berkane
Farith BerkaneArea & Property Management
(Section 2)
Sophie Schulze
Sophie SchulzeArea & Property Management
(Individual measures)
Platzhalter
Lara RosenkranzArea & Property
Management (Contract follow-up 
& payment processing)
Klaus Mysegades
Klaus MysegadesSenior Expert & Consultant Area & Property Management

Management of Organisational Units and Staff 

Kerstin Bernau
Kerstin BernauHead of Technical Department / 
Back Office
Markus Warnken
Markus WarnkenHead of 
Construction Section 
S4 (East)
Jens Je Witte
Jens WitteHead of 
Construction Section 2 & 3 & 
Individual Measures S4 (East)
Michael Kablitz
Michael KablitzHead of Planning 
Mohamed Rafik
Mohamed RafikHead of Rail Technology 

Construction Operation and Commissioning 

Feodor Killikh
Feodor KillikhProject Engineer Construction Commissioning
Platzhalter
Ridha RajbaouiProject Engineer
Construction Operation
Alexander Groß
Alexander GroßProjektingenieur
Construction Commissioning &
Construction Operation

Risk Management & Cost-Controlling

Mahnaz Payandeh
Mahnaz PayandehProject Engineer
Risk Management & Cost-Controlling

Planning

Martin Starkowski
Martin StarkowskiDepartment Manager
Construction Phase Planning
Pl
Estelle-Diane 
Djankui Sandjong
Project Engineer
Planning 

Project Management for Construction Sections

Construction Section 1

Janina Trampf
Janina TrampfTeam Coordinator &
Department Manager
Construction Section 1
Maximilian Berg
Maximilian BergDepartment Manager
Structural Engineering & Station Construction
Ahsen-Nur Essiz
Ahsen-Nur EssizDepartment Manager
Structural Engineering & Station Construction

Mohamed Eleskandrany
Mohamed EleskandranyProject Engineer
Structural Engineering & Station Construction
Fahad Seemab
Fahad SeemabProject Engineer
Structural Engineering & Station Construction
Torben Westermann
Torben WestermannProject Engineer
Structural Engineering & Station Construction
Aybikem Bahadir
Aybikem BahadirProject Engineer
Structural Engineering & Station Construction
Alessandra Franke
Alessandra FrankeProject Engineer 
Upper Structure
Lynn Frahm
Lynn FrahmProject Engineer
Underground Cable Installation
Amina Benbetka
Amina Benbetka Project Engineer Quality & Secondary Construction & Supervision
Mandy Eckert
Mandy EckertProject Assistant 
Construction Section 1

Construction Sections 2 and 3

Jan Dombrowski
Jan DombrowskiDepartment Manager
Construction Section 2
Petra Nienaber
Petra NienaberTeam Coordinator & 
Department Manager
Construction Section 3

Carolyn Blank
Carolyn BlankProject Assistant
Omar Abram
Omar AbramProject Engineer Section 2
Structural Engineering & Station Construction
Eugen Trippel
Eugen TrippelProject Engineer Section 2 Structural Engineering & Station Construction
Jana Röhrs
Jana RöhrsProject Engineer Section 3
Structural Engineering & Station Construction 

Individual Measures

Mohamed Nadjib Khellouf
Mohamed Nadjib KhelloufDepartment Manager
Individual Measures

Karine Audrey Nnomoko
Karine Audrey NnomokoProject Engineer
Structural Engineering & Station Construction
Imad Aichaoui
Imad AichaouiProject Engineer
Structural Engineering & Station Construction

Rail Technology 

Tino Danner
Tino DannerDepartment Manager
Electromechanical Engineering
Jing Shang
Jing ShangTeam Coordinator
Electromechanical Engineering

Karin Teucher
Karin TeucherProject Assistant
Johannes Voigt
Johannes VoigtProject Engineer
Electromechanical Engineering & Engineer Control-Command
Christian Bruhn
Christian BruhnProject Engineer 
Telecommunications & 50 Hz
Daniel Brausemann
Daniel BrausemannProject Engineer 
Electromechanical Engineering
Michael von Caron
Michael von CaronProject Engineer  Telecommunications & Engineer Control-Command
Jonas Heeilmann
Jonas HeilmannProject Engineer 
Rail Technology
Nicolas Ernst
Nicolas ErnstProject Engineer 
Electromechanical Engineering & Engineer Control-Command
Lasse Romeiks
Lasse RomeiksProject Engineer 
Electromechanical Engineering & Engineer Control-Command

Pipeline & Cable Crossings

Arber Bytyqi
Arber BytyqiTeamlead
EKrG Measures and Line Crossings
Laurenz Kempa
Laurenz KempaProject Engineer 
EKrG Measures and Line Crossings
Amir Mujagic
Amir MujagicProject Engineer 
EKrG Measures and Line Crossings

Contract and claims management

Technical Department / Back Office

Kirsten Lange
Kirsten RodemannHead of
 Technical Department ABS Pinneberg-Elmshorn
Stella Tran
Stella TranDepartment Manager Project Planning, Procuring and Allocation
Carsten Meyer-Thiele
Carsten Meyer-ThieleDepartment Manager
Schedule Management
Joëlle Engelmann
Joëlle Engelmann Department Manager
Documentation Management

Nicole Michalski
Nicole MichalskiProject Assistant
Sandra S. Lopez
Sandra HamannProject Engineer Planning, 
Procuring and Allocation
Marc Hecht
Marc HechtProject Engineer 
Portfolio Management
Rico Koppatsch
Rico KoppatschProject Engineer 
Portfolio Management
Jakob Meyer
Jakob MeyerProject Engineer Planning, 
Procuring and Allocation
Cornelia Eggers
Cornelia EggersProject Engineer 
Documentation Management
Sümeyye Bataray
Sümeyye BatarayProject Engineer 
Schedule Management
Sümeyye Bataray
Ilknur Enbiya ErgünProject Planning
Schedule Management

Environment, Geology and Waste Disposal Department

Patrick Menning
Patrick MenningSpecialist Environment 

Financial Management Team

Insa Halupczok
Insa Halupczok Department Manager Financial Project Management

Michael Salchow
Michael SalchowFinancial Project Management
Jasper Schulz
Jasper SchulzFinancial Project Management
Niklas Jäger
Niklas JägerFinancial Project Management
Juliane Giehler
Juliane GiehlerFinancial Project Management
Barbora Paulsen
Barbora PaulsenFinancial Project Management
Platzhalter
Leonie DrewesFinancial Project Management
Platzhalter
Jörg SürigFinancial Project Management
Matthias Andres
Matthias AndresFinancial Project Management
Project Assistant
Huan Gao
Huan GaoFinancial Project Management
Kim-Yannick Bredow
Kim-Yannick BredowFinancial Project Management

Construction & Supervision 

Ehsan Ahmadi
Ehsan AhmadiConstruction Office Manager
Khalid El-Dawi
Khalid El-DawiConstruction Office Manager
Stefan Petersen
Stefan PetersenHead Construction Supervisor 
E-Technology
Torben Oeser
Torben OeserHead Construction Supervisor KIB
Dorian Hampel
Dorian HampelHead Construction Supervisor Environment
Leonard-Vincent Brüning
Leonard-Vincent BrüningHead Construction Supervisior LST

Kristin Gruber
Kristin GruberSchedule Monitoring
Fritz Timm
Fritz TimmConstruction Supervision E-Technology
Christian Heinz-Schulz
Christian Heinz SchulzConstruction Supervision LST
Daniela Moreno
Daniela MorenoConstruction Supervision Top-Structure
Hans Dietrich
Hans DietrichConstruction Supervision Environment
Simon Wüstefeld
Simon WüstefeldConstruction Supervision Geotechnics
Torsten Hinsch
Torsten HinschOperations
Candy Schröder
Candy SchröderAccounting
Sandro Schütze
Sandro SchützeResource Management
Dr Christine Bahr
Dr Christine BahrWaste Management 
(Competenza GmbH – on behalf of DB)

Students working on the S4 project 

Kilian Schulze
Kilian SchulzeDual Student
Electromechanical Engineering 

Our S4 project partners

The S4 project is a joint undertaking between the German states of Hamburg and Schleswig-Holstein.

Different ministries and public bodies in these states oversee the building of the new suburban rail line to Bad Oldesloe. We have listed the main contacts here. 

BMV logo
Hamburger's authority for Transport and New Mobility (BVM)Known as BVM (Behörde für Verkehr und Mobilitätswende), Hamburg's authority for transport and new mobility makes sure the city stays mobile. It is helping to finance the new S4. BVM representatives are also involved in the decision-making process because their goal is to strengthen the Hamburg region's transport network.More information
Logo of Schleswig-Holstein's Ministry of Economic Affairs, Transport, Employment, Technology and Tourism
Schleswig-Holstein's Ministry of Economic Affairs, Transport, Employment, Technology and TourismThe state's transport ministry co-finances the construction of the new S4 line and is involved on a number of decision-making levels. The S4 will strengthen transport links between Schleswig-Holstein and Hamburg.More information
Logo of the EU's Connecting Europe Facility
Connecting Europe FacilityThe EU's Connecting Europe Facility co-finances the planning phase of the S4. This EU fund supports strategic transport projects across Europe with the goal of promoting integrated and sustainable mobility.More information
Hamburger Verkehrsverbund Logo
Hamburger VerkehrsverbundKnown as hvv, Hamburg's transport association will assume responsibility for operating the S4 line once building work finishes. For this reason, it is also involved in the project's planning and construction.More information
S-Bahn Hamburg's logo
S-Bahn HamburgS-Bahn Hamburg will be responsible for S4 services once the line opens.More information
S-Bahn Hamburg logo
Hochbahn HamburgHamburger Hochbahn AG is part the city's hvv transport association, running the city's metro system and the majority of its buses.More information
NAH.SH logo
NAH.SHNAH.SH GmbH manages rail transport in Schleswig-Holstein on behalf of the state government.More information
DB E&C logo
DB Engineering & ConsultingDB Engineering & Consulting is involved in the S4 planning process in its capacity as Deutsche Bahn international specialist for engineering and consulting.More information
IHK Lübeck Logo
Handelskammer HamburgThe Handelskammer Hamburg represents the interests of 170,000 companies and is a service provider for Hamburg's business community. The Handelskammer Hamburg sees the S4 as a elementary component of the mobility turnaround and urgently necessary for the future of the business location Hamburg.Mehr Information

Putting plans into action

First, all measures have to be planned and approved. Then we can start the work of putting the plans into action.

To build the new S4 line, we are working with several construction companies that have unrivalled experience and expertise.

Depenbrock logo
Depenbrock Bau GmbH & Co. KGResponsible for track substructure and superstructure, the permanent way and their construction.More information
 
 
DVA logo
DVA Deutsche Verkehrs-Assekuranz-Vermittlungs-GmbHResponsible for the project's insurance.More information
 
Eiffage-Infra-Northwest logo
Eiffage-Infra-Nordwest GmbHResponsible for site access roads and construction site facilities.More information
 
HC Hagemann logo
HC Hagemann GmbH & Co. KGResponsible for a temporary bridge.More information
Matthäi Bauunternehmen logo
Matthäi Bauunternehmen GmbH & Co. KG
Matthäi Trimodalbau GmbH
Responsible for the rail overpass at Hammer Strasse, site access roads and construction site facilities. More information
 
Schweerbau logo
Schweerbau Gmbh & Co. KGResponsible for track substructure and superstructure and the permanent way.More information
Siemens Mobility logo
Siemens Mobility GmbHResponsible for command and control technology.More information
SPITZKE SE logo
SPITZKE SEResponsible for underground cable installation, the third rail and the construction of Bovestrasse station.More information
 
Ed. Züblin AG logo
Ed. Züblin AGResponsible for the rail overpass and station at Wandsbek Rathaus and for the Schlossgarten rail overpass.More information
 
Strabag Rail GmbH logo
Strabag Rail GmbHResponsible for noise barriers.More information
 
Eurovia GmbH logo
EUROVIA GmbHResponsible for noise barriers.More information
 
SafeLane logo
SafeLane GlobalResponsible for explosive ordnance detectionMore information
 
Otto Wulff
Otto Wulff Bauunternehmung GmbHResponsible for Auxiliary bridge over the freight bypass. Mehr Informationen

Working together for a common goal 

A project like the new S4 line between Hamburg and Bad Oldesloe needs to involve a wide variety of people if it is to be a success on every front. These people include planning experts, environmental engineers, construction managers and communications specialists, not to mention employees at external project partners and construction firms. Though we come from very different professional backgrounds, we all share one goal: creating the new S4 line. 

If you want to join the S4 team at DB InfraGO AG,
just get in touch with our recruiter Katharina Riethmüller by e-mail.

Alternatively, take a look at our careers portal.
 

DB careers portal

05.09.2025Construction site camera on section 1