Technician Supercritical Co2
Borås, Sweden
Posted on Jun 16, 2026
Technician Supercritical Co2
On-site | Full-time | Borås
About us
Are you a highly-organised and motivated professional eager to drive innovation forward? Do you combine strong critical thinking with a creative, problem-solving mindset? Are you someone who can think outside the box, tackle complex challenges, and consistently deliver on time? You thrive working in a fast-paced environment, while your work-life balance is respected? If so, we would love to hear from you! Join us in scaling up a groundbreaking technology that is transforming the future of textile recycling!
Your mission at Renasens
You see a chemical process and instinctively want to understand it in detail; not just whether it works, but why. You will bring a methodical mindset and real attention to detail, taking full ownership of the cotton pre-treatment and dye removal workstream. You are comfortable designing experiments from first principles, running them rigorously, and turning data into decisions that move the process forward.
Take end-to-end ownership of the cotton pre-treatment and dye removal development
Design, run, and iterate on lab scale experiments from bench to pilot relevant conditions
Independently execute a full suite of characterization techniques
To be able to work in a team, receiving feedback and improving the process
Process, analyze, and report data with the rigor needed for scale up decisions
Refine experimental protocols and SOPs to ensure consistent, high-quality results
Contribute to an organized and clean lab environment
What you bring
MSc or PhD in physical chemistry, chemical engineering, or related field; we particularly value candidates who combine fundamental understanding of dye-fiber chemistry with hands on process development experience. Industry experience is a must
Understanding of the fundamentals in solvation thermodynamics, adsorption/desorption equilibria, kinetics, and mass transport is a merit.
Experience with cellulose, dyes, polymers, or extraction processes is an advantage; bonus if it touches supercritical fluids or alternative solvents
Hands on lab experience; comfort moving between bench work and process thinking
Experimental design skills
Certification or specialized training in high-pressure vessel operations and safety standards (such as PED - Pressure Equipment Directive).
Experience with Programmable Logic Controllers (PLC) or basic control systems for troubleshooting equipment anomalies.
Who you are
Energized by problems; yours, your colleagues', the ones nobody asked you to solve yet. You don't walk past a challenge, you walk toward it
Reliable & Independent; you take ownership and deliver on time without needing close supervision
Team over ego; you care more about collective wins than being right
Thrive in fast paced environments; you are energized by ambitious timelines and meaningful challenges
Translate depth into action, you go deep on mechanism when needed, but don't get stuck there. You know when to stop characterizing and start deciding.
Great to have, but not required
Experience with industrial dyeing chemistry
Previous experience in textile, fiber, or cellulose-based recycling processes
Sub-critical or supercritical experience
Experience translating lab results into pilot-scale process designHow we work at Renasens
Onsite & hands on: Our pilot plant is in Borås, with our headquarters in Stockholm. This role is based where the work happens; close to the lab and the pilot, not behind a laptop. Expect to spend most of your time on site running experiments and iterating with the team.
Small team, high ownership: We are around 10 people. You will own your workstream end-to-end and work directly with the R&D lead, process engineers and CEO. No layers, no committees.
Pace matters: We have pilot reception milestones in 2026 and customer commitments behind them. We move fast, decide with the data we have, and iterate.
Compensation & benefits
Wellness allowance
Pension scheme
30 days vacation
Rapid career growth
Employment type
Full-time
Location
Borås, Viared