Senior Process Engineer, Mechanical
Hands on Senior Process Engineer with strong mechanical manufacturing experience needed to optimise processes, implement Lean and DOE, support production, and drive continuous improvement.
We usually respond within a month
Senior Process Engineer
Location: London (On-site)
Type: Full-time
We are seeking a highly capable Senior Process Engineer to lead the optimisation, industrialisation, and scaling of manufacturing processes within our manufacturing operation. This is a hands-on engineering role focused on building robust, scalable manufacturing systems in a fast-paced and highly technical environment.
This role is suited to an engineer with strong mechanical and manufacturing engineering foundations, who is equally comfortable working on high-level process and equipment strategy as they are troubleshooting issues directly on the manufacturing floor.
You will play a key role in defining manufacturing standards, implementing lean manufacturing methodologies, selecting and integrating production equipment, and establishing stable, repeatable manufacturing operations.
In addition to process engineering responsibilities, this role will require active participation in manufacturing activities when needed, supporting production output and leading by example within the engineering team.
Tasks and Responsibilities
Define, implement, and optimise manufacturing processes across production operations
Characterise and improve process capability using structured engineering methodologies including DOE (Design of Experiments) and statistical analysis
Lead process robustness, repeatability, and yield improvement activities
Implement Lean Manufacturing and continuous improvement methodologies across manufacturing operations
Identify and define critical process parameters (CPPs), control strategies, and process limits
Lead technical troubleshooting and root cause investigations across equipment and manufacturing systems
Support the design, build, and implementation of process rigs, fixtures, and manufacturing systems
Specify, evaluate, and procure high-value manufacturing equipment and production systems
Work closely with suppliers and integrators through FAT, SAT, commissioning, and validation activities
Develop and maintain process documentation including SOPs, PFMEAs, validation protocols, and engineering standards
Support equipment installation, commissioning, maintenance strategy implementation, and process validation activities
Support transfer of processes into stable, repeatable manufacturing operations
Participate directly in manufacturing activities and production builds when required
Mentor and support junior engineers, setting high engineering and operational standards through hands-on leadership
Collaborate cross-functionally with Manufacturing, R&D, Quality, and Supply Chain teams
Qualifications
Degree in Mechanical Engineering, Manufacturing Engineering, Process Engineering, or related discipline, or equivalent industry experience
Strong experience in manufacturing process engineering within industrial, advanced manufacturing, medtech, automotive, aerospace, or regulated environments
Proven experience implementing Lean Manufacturing methodologies and continuous improvement initiatives
Strong understanding of DOE, process capability analysis, and structured problem-solving methodologies
Experience selecting, specifying, and implementing manufacturing equipment in controlled or regulated environments
Strong hands-on engineering capability with the ability to troubleshoot directly on manufacturing systems and equipment
Experience working with PFMEA, root cause analysis, validation, and engineering change control
Strong communication and cross-functional collaboration skills
Comfortable working in a hands-on manufacturing environment and supporting production activities directly when required
Desirable
Experience designing custom manufacturing equipment, fixtures, or process rigs
Six Sigma certification or equivalent continuous improvement training
Experience with automation, PLC-controlled equipment, or semi-automated manufacturing systems
Experience within highly controlled manufacturing environments
Familiarity with commissioning, FAT/SAT, IQ/OQ, or equipment qualification activities
CAD or mechanical design experience beneficial
This is a hands-on engineering role within a growing manufacturing team where you will have direct influence over how manufacturing systems are implemented, improved, and scaled. We are looking for someone who combines strong engineering fundamentals with practical manufacturing execution, leadership by example, and a continuous improvement mindset.
- Team
- Operations - Cartridges
- Locations
- London
About Portal Biotech
Founded by DNA-sequencing veterans, Portal Biotech is developing the first bench-top single-molecule protein sequencer, leveraging machine-learning algorithms and building on decades of in-house expertise in nanopore technology. By analysing full-length protein molecules at the single-molecule level, our platform delivers rapid, real-time information on protein identity, abundance, and structure. Those insights open frontiers in drug discovery, diagnostics, and fundamental research, helping scientists and clinicians to better understand human health and disease.