Acre has partnered with a world leader in the biofuels sector who is developing large, infrastructure-scale, multi-billion-dollar projects to produce fleet-level volumes of carbon-negative biofuels.

Through their proprietary fluidized bed gasification system, they produce a wide variety of renewable energy and chemical products, including syngas, hydrogen, renewable natural gas, methanol, sustainable aviation fuel, gasoline and diesel fuels.

With major projects underway and more to come, we are looking for a Principal Process Engineer to improve upon all aspects of the company’s gasification system.

There are few businesses in the world today that are executing projects of this scale, at this level of complexity, and this level of impact. If you want to leave a legacy and make history, please review the position requirements and apply.

Based in Houston, the Principal Process Engineer will be responsible for

• Leading process engineering projects and interfacing with clients and client engineers
• Utilizing and furthering the design methodologies for the technology system
• Modeling process simulations in AspenPlus/HYSYS or similar software and developing specialized modeling tools
• Implementing process design, equipment sizing and selection, equipment data sheets, systems engineering, PFD/P&ID development, control valve sizing, line list generation, flare and relief valve calculations, and others
• Collaborating with process controls specialists to develop DCS control narratives and system logic narratives.
• Leading hazard analysis, operability, and constructability reviews
• Contributing to third-party engineering service provider selection and engineering reviews with clients and suppliers
• Providing technical support for detailed engineering, pre-commissioning, commissioning, startup, and plant operations. On-site support will result in some amount of travel and extended stay at project sites.
• Developing and maintaining design procedures and tools
• Reviewing and contributing to proposals
• Other duties as assigned

Ideal Background consists of

• PFD, PID development
• Systems design/Advanced & regulatory controls
• Process control fluency
• Safety system fluency
• Hydraulic calculation
• Control valve size
• Flare system relief scenario and relief valve sizing
• Outgoing and energized by bringing the best out of everyone on the team
• Well-versed in engineering workflows and project delivery from both client and vendor perspectives
• Well-established process engineering skills including generation of heat and material balance, PFD, and PID, process design criteria, equipment sizing, process modeling, plant integration, and technical design and oversight
• Working knowledge of Hazard Analysis methodologies, safety systems and SIL level application
• Skilled in revision control and methods
• Ability to exercise sound judgement in prioritizing tasks and solving problems, chasing issues through resolution
• Familiarity with fluidized beds, solids handling systems, biomass conversion, steam methane reforming, oxycombustion, carbon capture, fuels/methanation synthesis and reactions
• Knowledge of new and novel chemical processes is a plus
• Some experience with thermal integration of varied process technologies
• Excellent oral and written communication skills
• Proposal/report writing
• Experience with plant operation, ideally including startup and commissioning
• Client-facing/interaction experience 

Required Education and Experience

• Bachelor’s degree in chemical engineering with 15-25 years of related experience
• Highly experienced with process simulation using AspenTech programs such as Aspen Plus and HYSYS, and other process simulators
• Experience with AutoCAD, Bluebeam, or similar software for drafting and editing P&IDs preferred
• Fluent in chemical manufacturing facilities' process design
• A strong background working in EPC and systems engineering is a plus.
• Fluidized bed, syngas system and gasification experience a plus.
• Other relevant formal training, including HAZOP, HAZID, Project Management is a plus.

Additional details

• This is a full-time position located near North Houston and will require occasional travel up to 10-15% of the time.
• Competitive salary and benefits package based on appropriate experience. Benefits include health, dental, vision, life, LTD, STD, 401K, PTO, employee assistance program and opportunities for career development.

To be considered for this position, please apply here, or email Richard Kent at richard.kent@acre.com

Acre has partnered with a world leader in the biofuels sector who's developing large infrastructure scale multi-billion-dollar projects to produce fleet-level volumes of carbon-negative biofuels. Through their proprietary fluidized bed gasification system, they produce a wide variety of renewable energy and chemicals products, including syngas, hydrogen, renewable natural gas, methanol, sustainable aviation fuel, gasoline and diesel fuels.

With more projects to come, we are looking for a Senior Mechanical Engineer to work on all aspects of mechanical systems designs related to the company’s gasification system.  If you are skilled at modelling and design, but also hands-on and passionate about working on the technology in real-time, this is the perfect opportunity for you!

Based in Houston, the Senior Mechanical Engineer will be responsible for

• Providing engineering support on S1000 mechanical equipment design
• Supporting new product design, improvements, and innovations
• Preparing company standards and mechanical specifications
• Developing and reviewing: mechanical datasheets, vendor bidding and selection, and detail drawings
• Collaborating with multi-disciplinary engineering teams, and working with vendors and contractors
• Supporting the growth of the company’s intellectual property portfolio related to its technology
• Performing other work-related tasks as assigned

Your background consists of

• Experience in the design of complex mechanical equipment
• High-temperature design
• Pipe stress analysis/Refractory design a plus
• Solids handling experience a plus
• Heat transfer design/Pumping Systems/Compression systems
• 3D model development and 3D design tools
• Familiarity with design codes and standards such as API, PIP and ASME
• Excellent computer skills, with experience in CAD
• Previous EPC industry experience and/or fabrication is desired
• Experience with the design or handling of rotating equipment is a plus
• Professional Engineering (PE) certification is preferred

Education and Experience

• Bachelor’s and/or master’s degree in mechanical engineering
• 10-15 Years of relevant project experience

Additional details

• This is a full-time position located near North Houston, and will require occasional travel up to 10-15% of the time
• Competitive salary and benefits package based on appropriate experience. Benefits include health, dental, vision, life, LTD, STD, 401K, PTO, employee assistance program and opportunities for career development.

There are few businesses in the world today that are executing projects of this scale, at this level of complexity and this level of impact. If you would like to be considered, please apply here or email Richard Kent at richard.kent@acre.com

Are you a data-driven sustainability professional looking to shape the future of Net Zero for a global FTSE250 business?

Acre is partnering with a global technology company that make high-precision instruments, software, and testing equipment, that are looking for a Sustainability Data & Reporting Lead to join their team. This is a newly created role within their growing sustainability team, offering the opportunity to lead and shape the global emissions reporting strategy.

As the Sustainability Data & Reporting Lead, you’ll be central to delivering our client’s ambitious 2030 Net Zero targets, and own the strategy and systems for capturing, managing, and analysing the scope 1, 2, and 3 emissions data. This is a great opportunity to combine strategic thinking, global stakeholder engagement, and data excellence to influence sustainability outcomes across the organisation.

Reporting in to the Head of Sustainability, you will

• Lead the development and implementation of the global scope 1, 2, and 3 emissions data strategy and manage the partnerships with external advisors.
• Provide insight-driven analysis to track performance and shape strategic decisions.
• Build internal capability and train stakeholders globally to ensure accurate data collection.
• Lead on external reporting (ESOS, CDP, EV100) and customer sustainability disclosures.
• Evolve and improve scope 3 reporting, especially within product and supply chain categories.
• Deliver high-quality, audit-ready emissions reporting across all scopes.

What we’re looking for

• Proven experience in leading global sustainability data strategies in a corporate setting.
• Excellent data analysis skills paired with the ability to communicate complex insights simply and persuasively to a wide array of stakeholders.
• A strategic mindset, with strong execution skills and experience influencing senior stakeholders.
• Advanced Excel skills and experience managing complex data systems.
• Strong knowledge of climate and energy reporting frameworks and legislation.

Compensation

• Hybrid working model- based in London, 10 days per month, with opportunity for UK and international travel.
• Competitive salary, annual bonus, employee share plan, pension, and private medical insurance.

Interested? Please apply directly or reach out to Imogen Mattick at imogen.mattick@acre.com

Would you like to play a key role in shaping the future of sustainable energy solutions?

Are you excited about working with a growing, forward-thinking company at the forefront of clean technology?

Acre is partnering with an innovative energy storage company based in Ede to recruit an R&D Project Manager for their Energy Storage Systems (ESS) division.

About the Company

Our client is committed to revolutionizing energy storage and management. With energy demands surging, putting pressure on existing infrastructure, the company offers smart, scalable solutions that empower businesses and households to efficiently manage energy generation and consumption. This fast-growing, innovative company is at the forefront of the energy transition, providing impactful solutions in a dynamic, forward-thinking environment.

Your Role

In this role, you will guide product development initiatives and ensure a smooth rollout of new products. You’ll be the central coordinator, ensuring that new innovations are effectively introduced across departments and aligned with the company’s broader goals.

Key Responsibilities

• Overseeing timelines and managing day-to-day project progress across multiple teams. You are solution-oriented and able to switch between projects quickly.
• Supporting R&D colleagues by helping structure workflows and offering tools that enable technical innovation and refinement.
• Contributing to the continuous improvement of production processes by identifying bottlenecks and driving efficiency.
• Keeping an eye on emerging trends, customer demands, and industry movements to inform product strategy.
• Monitoring product compliance with regulations and ensuring safety and quality standards are met.
• Acting as a bridge between R&D and other departments, assisting with technical queries and product-related issues.

Key Requirements

• At least 3 years of experience in a similar role or equivalent.
• A natural organizer who thrives in dynamic environments while ensuring projects go according to plan.
• You have a technical background, either through relevant experience or higher professional/university education level.
• Strives for excellence and takes pride in delivering high-quality results.
• Strong communicator with a solution-focused mindset.
• Comfortable using Microsoft Office tools.
• Dutch fluency at least at a professional level is required.

Why Join the Company/Benefits

• 8% holiday pay in addition to base compensation
• Company phone and laptop provided.
• Travel allowance provided.
• Opportunities for professional development and career growth.
• Be part of an enthusiastic, motivated team at a vibrant workplace.
• Enjoy regular team events and social gatherings to strengthen connections.

Do you believe this is the role for you in making an impact in the energy transition sector?

Please apply directly, only applications through our website will be considered. For any enquiries, contact Thaddeus Tan at thaddeus.tan@acre.com

Location is preferably London or New York, however we will consider candidates from other locations, or those willing to relocate.

The World Gold Council is a membership organisation that champions the role gold plays as a strategic asset, shaping the future of a responsible and accessible gold supply chain. 

This work plays a critical role in supporting the broader remit of the organization – to champion the role that gold plays as a strategic asset, recognizing that long-term confidence and trust in gold as an asset class has to be underpinned by a responsible and accessible gold supply chain.

The Head of Supply Chain Integrity will lead its work in advancing a responsible, transparent, and accessible gold supply chain. Reporting to the Chief Strategy Officer, this pivotal role will shape the organisation’s efforts to strengthen standards across the gold supply chain, from large-scale industrial operations to artisanal and small-scale gold mining (ASGM). The successful candidate will collaborate with industry leaders, investors, civil society, and policymakers to drive long-term impact and credibility in global gold markets.

Key responsibilities include

• Leading the development and awareness of responsible mining standards, including the implementation of the WGC’s Consolidated Mining Standards initiative.
• Supporting WGC member companies in meeting responsible sourcing commitments and tracking alignment across the network.
• Driving efforts to formalise responsible ASGM practices while helping to prevent the entry of high-risk sources into the formal gold supply chain.
• Working with refiners, bullion banks, and industry bodies (e.g. LBMA) to improve due diligence and strengthen confidence in responsible sourcing practices.
• Promoting the Gold Bar Integrity (GBI) initiative, helping integrate responsibly produced gold into a trusted and verifiable ecosystem.

The ideal candidate will bring

• Extensive experience in Sustainability, responsible sourcing, or supply chain integrity – ideally within the metals/mining sector, or relevant industries such as electronics or apparel.
• Familiarity with international policy frameworks (e.g. OECD Due Diligence Guidance, UN Guiding Principles) and/or assurance and compliance processes.
• Experience working in developing countries, particularly in mining or manufacturing contexts.
• Strong leadership, communication, and project management skills, with the ability to engage and influence at all levels.
• A collaborative mindset, with the confidence to take initiative and deliver impactful outcomes.
• A commitment to driving positive change and enhancing the integrity of global supply chains.

This is an outstanding opportunity to join the World Gold Council at a time of strategic growth and global relevance. The successful candidate will play a key role in shaping the future of the gold sector, ensuring it remains responsible, resilient, and aligned with the expectations of investors, consumers, and society. For mission-driven professionals ready to make a meaningful impact, this is a rare and rewarding challenge.

Please apply directly or for more information reach out to Dan Bond at dan.bond@acre.com