Experience
Selected projects since 2019, with the capacity, client, contract form and value of each.
- $17bn+
- Across 27 projects since 2019.Combined contract value of the 22 valued projects among 27 SUMIT engagements, February 2019 to October 2026, at public project values. Not fees. As at October 2026.
Rail projects
Showing 3 of 13 projects in Rail.
| Project | Client | Capacity | Value |
|---|---|---|---|
| Rail systems nominated subcontract, South East QueenslandSouth East Queensland, 2026 | Tier 1 contractor | Advisory | c. $140m |
| Waterloo Station, Sydney Metro City and SouthwestWaterloo, Sydney NSW, 2021 to 2022 | John Holland | Advisory | $450m |
| More Trains More Services Stage 2Sydney, NSW, 2021 | John Holland | Advisory | $300m |
Rail systems nominated subcontract, South East Queensland. SUMIT role: commercial management for a Tier 1 contractor. Illustrative image. Rail systems nominated subcontract, South East Queensland
South East Queensland, 2026. Advisory.
- Client
- Tier 1 contractor
- Role
- Commercial advice to the project team; nominated subcontracts and procurement
- Contract
- Nominated subcontract and DPC deed (ETCS Level 2); Qld BIF Act
- Value
- c. $140mBasis: Approximate nominated subcontract value
Commercial advice to a Tier 1 contractor's project team on three key nominated subcontracts for a digital rail radio network supporting ETCS Level 2, with network, mission-critical software and monitoring suppliers. These were technology companies, not typical construction subcontractors, so SUMIT drafted and negotiated a bespoke supply, software licence and support agreement to capture the software and licensing terms and align them with the upstream contract's requirements.
A bespoke supply, software licence and support agreement issued, the network supply deed's conditions precedent satisfied, and a 630-item obligations register in place.
Waterloo Station, Sydney NSW. SUMIT role: head contract claims for John Holland. Image: Sydney Metro. Waterloo Station, Sydney Metro City and Southwest
Waterloo, Sydney NSW, 2021 to 2022. Advisory.
- Client
- John Holland
- Role
- Commercial and claims consultant
- Contract
- Bespoke Sydney Metro contract
- Value
- $450mBasis: Contract value, as published
Developed the commercial strategy for more than $100m of John Holland's COVID-19 head contract claims on a $450m metro station, assembled the evidence and basis of claim for extension of time, prolongation and acceleration, and negotiated the key positions with the Principal: valuations, calculation methods and terms for the Principal's acceleration directions.
Both sides' senior leadership settled the COVID-19 claims by deed of release and amendment, on the valuation and calculation positions SUMIT negotiated.
More Trains More Services Stage 2, Sydney NSW. SUMIT role: commercial management for John Holland. Image: John Holland. More Trains More Services Stage 2
Sydney, NSW, 2021. Advisory.
- Client
- John Holland
- Role
- Commercial Manager
- Contract
- Transport for NSW head contract
- Value
- $300mBasis: Contract value including variations
Commercial Manager on the T4 and T8 line works, leading the T8 tunnelling, substation and airport tunnel upgrades: procurement and subcontractor management, and identification, preparation and submission of head contract claims, including variations and extensions of time.
Major project experience, 2005 to 2026
Malachy Mullin's major projects, including roles held before SUMIT was founded in 2019. Values are the contract value of the project or package worked on, as published or contracted. Not fees.
Energy and renewables
- $12bn pumped hydro scheme (Snowy 2.0), Snowy Mountains NSW · Snowy Hydro, procurement review, 2024
- $369m EPC wind farm, 46 turbines (Bango), Southern Tablelands NSW · GE, 2020
- $850m wind farm, turbine installation (Stockyard Hill), VIC · Goldwind, 2020
- $600m wind farm, turbine installation (Moorabool North), VIC · Goldwind, 2020
- $850m EPC wind farm (Coopers Gap), South Burnett QLD · GE, 2019
- $342m EPC wind farm (Silverton), Silverton NSW · GE, 2019
Rail and rail systems
- c. $140m nominated subcontract, digital rail radio network for ETCS Level 2, South East QLD · Tier 1 contractor, 2026
- Shotcrete subcontract review, metro station box (Sydney Metro West, The Bays), Sydney NSW · tendering subcontractor, 2022
- $450m metro station (Waterloo Station, Sydney Metro), Sydney NSW · John Holland, 2021 to 2022
- $300m heavy rail tunnelling and substation upgrades (More Trains More Services Stage 2), Sydney NSW · John Holland, 2021
- $350m surface and viaduct civil works (North West Rail Link), North West Sydney NSW · Salini Impregilo, 2014
Water and wastewater
- NEC4 Option A microtunnelling subcontract (Thompsons Creek Stage 1 pipeline), Sydney NSW · Pezzimenti Tunnelbore, 2026
- $150m NEC4 Option C wastewater project (Austral Leppington Stage 3), South West Sydney NSW · West Region Delivery Team, 2023
- $145m design and construct water treatment plant (Mount Piper), Lithgow NSW · Abergeldie, 2019
- $182m target cost alliance, water and wastewater treatment plants (Pilbara Clear Water Alliance), Karratha and South Hedland WA · Tenix, 2012 to 2014
- $63m target cost alliance, treatment plants (South West Alliance), Busselton and Margaret River WA · Tenix, 2012 to 2014
Roads
- $110m GC21 road upgrade (Cox's River Road), Little Hartley NSW · Ertech, 2024
- $85m GC21 road upgrade (Heathcote Road), Holsworthy NSW · Ertech, 2024
Retail, commercial and mixed use
- $350m+ lump sum design and construct shopping centre redevelopment, Sydney NSW · Tier 2 builder, 2026
- Value engineering workshop, cultural precinct redevelopment, Sydney NSW · head contractor, 2026
- c. $370m over-station office tower, Sydney CBD NSW · Tier 1 contractor, 2025
- $275m design and construct retail and residential town centre (Edmondson Park Stage 1), Edmondson Park NSW · Probuild, 2019 to 2020
- $38m retail refurbishment (Gateway Sydney), Circular Quay NSW · Buildcorp, 2014 to 2015
- $30m office refurbishment and extension (1 Thomas Holt Drive), Macquarie Park NSW · Buildcorp, 2014 to 2015
Health, aged care, retirement and residential
- c. $110m design and construct retirement living, South West Sydney NSW · Tier 2 builder, 2026
- AS 4300 design and construct specialist disability accommodation, pre-contract review, Western Sydney NSW · fitout contractor, 2026
- c. $260m hospital redevelopment, Western Sydney NSW · Tier 1 contractor, 2025
- Residential defects proceedings, NSW District Court, support to the appointed quantum expert, Sydney NSW, 2022
- $35m seniors housing (Salamander Bay), NSW · Lahey Constructions, 2018 to 2019
- $15m residential aged care extension, 32 beds (Terrace Gardens), Palmerston NT · Lahey Constructions, 2018 to 2019
- $15m design and construct residential aged care facility (Orange RACF), Orange NSW · Cockram Construction, 2015 to 2018
Education, justice and sport
- Design and construct sports facility, Sydney NSW · head contractor, 2026
- $55m school upgrades (Greystanes Public School and Fairvale High School), Western Sydney NSW · Lahey Constructions, 2018 to 2019
- $37m school (Bardia Public School), NSW · Lahey Constructions, 2018 to 2019
- $36m school (Manly Vale Public School), NSW · Lahey Constructions, 2018 to 2019
- $28m school (Artarmon Public School), NSW · Lahey Constructions, 2018 to 2019
- $20m school (Central Sydney Intensive English High School), NSW · Lahey Constructions, 2018 to 2019
- $11m school (Wauchope Public School), NSW · Lahey Constructions, 2018 to 2019
- $12m police station (Southern Highlands), Moss Vale NSW · Lahey Constructions, 2018 to 2019
- $14m sports and aquatic centre (University of Sydney), Camperdown NSW · Buildcorp, 2012
Data centres
- $80m data centre, construction management agreement (Brooklyn 1), Brooklyn VIC · CDC Data Centres, 2024
- $30m data centre, ECI then design and construct (Metronode Silverwater Stage 2), NSW · Cockram Construction, 2015 to 2018
- $25m data centre, ECI then design and construct (Metronode Unanderra Stage 2), NSW · Cockram Construction, 2015 to 2018
Marine
- Cofferdam subcontract (New Sydney Fish Market), Blackwattle Bay NSW · J Steel Australasia, 2020 to 2021
Defence
- Defence, rail and water contract portfolio, NSW, WA and SA · specialist engineering contractor, 2025