Chemical Process Engineer

JR United Kingdom; United Kingdom; On-site; GBP 35,000 - 40,000; Full time

Job summary

An ambitious clean-tech start-up is seeking a Chemical Process Engineer to join their innovative team. This role offers a unique opportunity to work on cutting-edge technologies aimed at achieving Net Zero and Negative Emissions. You'll be involved in designing and developing scalable chemical processes that contribute to sustainable manufacturing and low-carbon energy systems. Collaborate with a multidisciplinary team to tackle real-world environmental challenges and make a meaningful impact in the field of decarbonisation. If you're passionate about applied R&D and sustainable innovation, this is the perfect opportunity for you.

Benefits

Flexible work culture

Growth opportunities

Collaborative environment

Mission-driven projects

Qualifications

• Proficiency in process simulation tools like Aspen Plus and HYSYS.
• Strong knowledge of chemical process design and thermodynamics.

Responsibilities

• Simulate and optimise chemical processes using Aspen Plus or HYSYS.
• Conduct techno-economic assessments and sustainability evaluations.

Skills

Chemical Process Design

Thermodynamics

Process Simulation (Aspen Plus, HYSYS)

Problem Solving

Adaptability

Education

1st class or 2.1 honours degree in Chemical Engineering

Master’s degree or research experience in a relevant engineering field

Tools

Aspen Plus

Aspen HYSYS

Job description

Job Description: Chemical Process Engineer, United Kingdom

Company: Pure Alchemi

Location: United Kingdom

Job Category: Other

EU work permit required: Yes

Salary: 35k - 40k (Depending on experience)

Pure Alchemi (www.pure-alchemi.com) is an ambitious clean-tech start-up developing next-generation technologies for Net Zero and Negative Emissions. We engineer circular, sustainable energy systems by converting industrial waste and biomass into clean fuels, high-value materials, and captured carbon. Our team combines innovation and impact—working across advanced combustion, CCUS, and sustainable chemical processes.

We are expanding our engineering team and seek a Chemical/Process Engineer to support the scale-up of our lab-to-industry technologies. This is a unique opportunity to work at the forefront of decarbonisation innovation in a high-impact start-up.

You will join a multidisciplinary team of engineers, scientists, and entrepreneurs to design, model, and develop scalable chemical processes for sustainable manufacturing and low-carbon energy systems. Responsibilities include process design, simulation, lab-to-pilot scale operations, and techno-economic evaluation of technologies such as waste valorisation, thermal conversion, and carbon capture and utilisation. This role is ideal for candidates passionate about applied R&D, systems thinking, and sustainable innovation, contributing at the intersection of engineering, climate tech, and circular economy.

Key Responsibilities

• Simulate and optimise chemical and thermal processes using tools like Aspen Plus or HYSYS.
• Design systems for advanced combustion, waste-to-fuel conversion, and resource recovery.
• Analyse mass and energy balances, emissions profiles, and process performance.
• Support R&D activities to scale lab technologies toward commercial deployment.
• Conduct techno-economic assessments (TEA) and sustainability evaluations of emerging technologies.
• Work collaboratively in an agile environment to solve engineering challenges and iterate quickly.

Minimum Qualifications

• 1st class or 2.1 honours degree in Chemical Engineering or a related field; exceptional experience may be considered otherwise.
• Proficiency with process simulation tools such as Aspen Plus, Aspen HYSYS, or similar.
• Strong knowledge of chemical process design, thermodynamics, and reactor modelling.
• Problem-solving skills, adaptability, and independence in a fast-paced environment.
• Ability to work independently and as part of a team.
• Right to work in the UK.
• Experience in chemical or process engineering roles, process scale-up, intensification, or TEA.
• Exposure to start-up or R&D environments.
• Interest in circular economy, industrial decarbonisation, or clean energy solutions.
• Master’s degree or research experience in a relevant engineering field.

Why Join Us?

• Work at the core of a mission-driven company addressing real-world environmental challenges.
• Collaborate with pioneering researchers, engineers, and innovators.
• Shape technologies that will redefine energy and material production.
• Enjoy a flexible, supportive work culture with growth opportunities in a rapidly scaling business.
• Make a meaningful impact—your ideas will help drive sustainable change.