Management team


Juha Toimela

President and CEO of GRK Infra Oyj and GRK Suomi Oy

  • Working with company since 2021
  • Education: MSc Civil Engineering, MBA
  • Worked previously as the Executive Vice President of SRV Yhtiöt Oyj and in project management functions, for example, at Pöyry Oyj and Rautaruukki Oyj.

Keijo Haavikko

Executive Vice President and member of the Board

  • Working with company since 2010
  • Education: MSc Civil Engineering
  • Worked previously as the Managing Director of Niska & Nyyssönen Oy.

Sami Immonen

Technical Director

  • Working with company since 2018
  • Education: MSc Civil Engineering, since 2003
  • Previously worked on projects, company’s quality management and project management with Niska & Nyyssönen Oy and Skanska Infra Oy

Johanna Korhonen

HR Director

  • Working with company since 2013
  • Education: Master of Laws and MA in Social Studies
  • Worked previously as a lawyer and partner in different law firms.

Johanna Metsä-Tokila

Chief Legal Officer

  • Working with company since 2021
  • Education: Master of Laws trained on the bench
  • Worked previously as the Chief Legal Officer at SRV Yhtiöt Oyj and as the Senior Legal Counsel at OP Financial Group.

Mika Mäenpää

CEO of GRK Sverige AB

  • Working with company since 2020
  • Education: Industrial Management Engineer
  • Worked previously as the Chief Business Officer at Mäenpää Rakennus Oy, as the CEO of Sundström Ab Oy and as the Business Manager for Asia and Europe at Rolls-Royce Marine A/S.

Jaakko Mäkelä

Business Director, Civil Engineering and Paving

  • Worked in the company since 2015
  • Education: MSc Civil Engineering
  • Worked before as project manager in GRK and on site operations in YIT Rakennus Oy

Mikko Nyhä

Business Director, Rail Business and VP of GRK Suomi Oy

  • Worked in the company since 2020
  • Education: MSc Civil Engineering
  • Worked previously, for example, at Oy VR-Rata Ab, VR Track Oy and NRC Group Finland Oy.

Timo Pinomäki

Chief Risk Officer

  • Worked in the company since 2016
  • Education: Community development engineer
  • Worked previously as the Vice President, Risk Management at VR Track Oy.

Riina Rantsi

Chief Business Development

  • Worked in the company since 2019
  • Education: FT, PHD
  • Worked previously as the chief business development at Suomen Erityisjäte

Mikko Sillman

Chief Financial Officer until 30 September 2023

  • Worked in the company since 2018
  • Education: Master of Business Administration
  • Worked previously in auditing positions at PwC and as a business analyst at Nokia

Tiit Roben

CEO of GRK Eesti AS

  • Working with company since 2023
  • Education: MSc Civ.Eng
  • Worked previously as the Chairman of the Management Board of AS Merko Ehitus and Senior Advisor of AS EGE Ehitus and AS Infortar.