Our Team

Our expert team

Work in the following fields:
Property, transportation, education, health, government, communications & energy contracts, we support each stage of the project. Driving the whole process while taking care of everything from preparing the brief, analysing & advising on risk.

Appointing the project team, briefing them fully, agreeing and issuing specific procedures plus managing development of phased programmes. Our approach enables us to provide staff with an extensive range of experience of the markets in which they work, coupled with a thorough knowledge of project management’s best practice.

HML brings a fresh approach to how the client’s needs are met and their projects are delivered ahead of programme and under budget. Internationally, we advise our clients on delivery of their projects no matter the scale or complexity, financial modelling, organisational development, training and development management for clients in the Baltics as well as Finland and the UK.

In addition to our substantial planning, development and project management backgrounds, HML has founded and advised on property management, public and privately funded projects as well as consultation to other groups.
HML markets are Estonia, Finland, Latvia, Lithuania, Poland, Ireland and the UK.

Leo O Neill

Founder & Chairman of the board

Leo O Neill founded HML Project Management in order to provide a complete set of professional project management services to businesses and organizations seeking to gain operational efficiencies and capture bottom-line results. Leo has over 20 years experience of project management and brings a fresh approach to how the client’s needs are met, ensuring their projects are delivered ahead of programme and under budget. Internationally, Leo advises clients on delivery of their projects no matter the scale or complexity, financial modelling, organisational development, training and development management for clients in the Baltics as well as Finland, Poland, UK and Ireland.

Hanna O Neill

Founder & Member of the Board

Hanna is the Co-Founder of the company and Member of the Board. She is looking after the company’s accounts and finances along side with the CEO.

Sandra Soidla

Chief Operating Officer

Sandra is responsible for overseeing the day-to-day operations of the business to ensure it runs smoothly and efficiently.

Kevin Ellis

Senior Consultant

Kevin brings more than 30 years of practical, hands-on industry experience to every project he is involved with. His expertise encompasses various sectors of the construction industry.  Many of his commissions in recent years have been on very complex or larger-scale, multi-million euro projects. Kevin’s years of experience and formal training have cultivated his excellent working knowledge of the construction industry with the ability to provide valuable advice and strategy during both the design and construction phases. Kevin is responsible for supporting the strategic direction of the company while supporting the CEO and project staff throughout the company.

Mark Coutts

Senior Project Manager

Mark has over 30 years of experience in the construction and resource industry. He has worked on major infrastructure projects, civil works (structural and earthworks), marine operations, drainage and piping installations, and vehicular operations.

Mark has a proven record in leading teams to meet delivery targets. He brings confidence to projects, having worked on large, complex infrastructure projects and focus on work health and safety.

Igor Ikonnikov

Senior Project Manager

Igor Ikonnikov is a Project Manager with experience in construction industry in different roles: Subcontractor, General Contractor to Client Representative. For this reason, Igor knows how to find common language with all parties in the construction process. He has been working for 12 years in construction businesses. Igor has a civil engineer diploma from TKK University of Applied Sciences and has participated continuously on different management and engineering trainings in Estonia. Igor speaks Estonian, English, Russian and Ukrainian.

Lelde Zimele

Project Manager

Lelde has spent her study and early work years in the UK. She has a BEng (Hons) degree in Civil and Environmental Engineering from University of Edinburgh and an MSc Earthquake Engineering degree from Imperial College London. She has over 3 years’ experience working as a Structural Engineer in central London, acquiring knowledge in both permanent and temporary building design. This experience has equipped Lelde with the ability to successfully manage design and construction of projects of various scale and complexity.

Inessa Parinskaja

Key Account Manager

Inessa is an experienced Project Manager at HML. On top of her other projects, starting from 2022 she is the Key Account Manager for one of our biggest clients.

Martin Pajuväli

Senior HVAC Engineer

Martin has over ten years practical hands-on experience in designing, building and overseeing the construction processes of HVAC systems. Martin is a Diploma Engineer in Heating, Ventilation and Air Conditioning (HVAC), EstQF Level 7.

Jan Puntussov

Senior Electrical Engineer

Jan has over 10 years experience in designing electrical systems and running design teams. Jan has the Diploma of Electrical Engineer of Electric Automation, EstQF Level 7.

Rein Lilienthal

BIM Manager

Rein is a Structural Engineer with over 8 years of experience in the construction industry. He is an experienced BIM modeler and design project manager.

Jegor Rozanov

Assistant Project Manager/ Junior Planner  

Jegor helps our project managers set up projects, monitor deadlines, effective communication with all project stakeholders, documentation management, reporting and all other relevant areas of work.

From April 2023, Jegor has taken on the role of Junior Project Planner. This role involves supporting the Project Managers with the production of programmes for Design, Procurement, Construction, Installation & Commissioning activities for each project from tender through to completion; also reviewing the progress of programmes on a regular cycle and management reporting as and when required.

Carl Hiiesalu

Assistant Project Manager

Carl is one of our assistant project managers tasked with supporting the coordination and execution of various project tasks, ensuring that they are completed on time and within budget.

Tharaka Jayawickrama

Senior Quantity Surveyor

With 15+ years of experience as QS/CM, Tharaka leads the cost management aspects of construction projects, oversees budgeting, tendering, and contract administration processes. His role involves providing strategic guidance on cost control measures, risk management, and value engineering initiatives. He mentors junior staff, negotiates with stakeholders, and ensures projects are delivered within budgetary constraints while maintaining quality standards.

Mayline Fernandez

Junior Quantity Surveyor

As a Junior Quantity Surveyor/Cost Manager, Mayline assists in cost estimation and budgeting for construction projects, ensuring adherence to financial constraints and timelines. She is responsible for conducting site visits, analyzing data, and preparing reports to support decision-making processes. Collaborating closely with project teams, she contributes to cost-effective solutions while gaining valuable experience in the field of quantity surveying and cost management.

Julia Fen


Julia is an Architect at the HML Tallinn office. She has a masters degree from University of Construction and Architecture in Kiev, Ukraine. She has almost twenty years of experience working as an Architect on various international projects relating to different fields of Architecture and Design, including corporate offices, hospitality and healthcare facilities, shopping malls, and apartment buildings.

Her most favoured programmes are Revit and Photoshop and she also utilizes ArchiCAD and AutoCAD. She speaks Russian, English and Ukrainian. 

Marius Lisovskis

Project Manager (Lithuanian office)

Marius joined HML Project Management in July 2015 and heads the Lithuanian HML branch office. He is tasked with liaising with clients and reporting progress, supervising contracted staff, meeting subcontractors, making safety inspections and ensuring construction and site safety, checking and preparing site reports, designs and drawings, maintaining quality control procedures. Sourcing new clients accounts and excellent customer service. Marius holds  Bachelor’s Degree in Law and Management and a Master’s Degree in Business Law faculty of Mykolas Romeris University.

Gabriele Grusiene

Architect (Lithuanian office)

Gabriele is the lead architect with HML, based in our Lithuanian office. She is responsible for design management involving: code application, design development, MEP coordination, process support coordination, construction documents, Sketch Up, Revit, 3DS MAX 3D modelling, structural engineering; preconstruction services. Plus site analysis and selection, feasibility studies, conceptual design, master planning, equipment planning and analysis; project administration: permitting, value analysis, document coordination and excellent customer service. Gabriele holds a Bachelor´s Degree in Civil Engineering and Master’s Degree in Architecture, both from Vilnius Gediminas Technical University.

Camilla Saar

Operations Assistant

Together with Sandra, Camilla oversees the day-to-day operations of the business to ensure it runs smoothly and efficiently. Camilla is also in charge of HML branding and marketing.