The letter, part by part
Zoe Palmer (Process Engineer, Water Treatment Chemicals) is applying to be a Chemical Process Engineer at Harbourline Specialty Chemicals. Here is what each paragraph does.
- The hook
- The proof
- The fit
- The close
Dear Mr Whitfield,
Harbourline's plan to convert its resin line from batch to continuous processing is exactly the kind of project I have wanted to work on since university. When I saw your advertisement for a Chemical Process Engineer, I recognised a role where my plant experience could help a technically ambitious team deliver a safer, leaner and more reliable process.
For the past four years I have been a process engineer at a Western Sydney water treatment chemicals plant producing 40,000 tonnes a year. I led a reactor temperature-control upgrade that cut off-spec batches from 6% to 2.5%, saving roughly A$310,000 annually. I also redesigned our caustic dosing system, reducing chemical consumption by 9%, and facilitated three HAZOP studies that closed 47 actions ahead of schedule.
Your advertisement stresses process safety, scale-up and data-led optimisation, and these are the areas I enjoy most. I am confident running Aspen HYSYS simulations, interpreting historian data in OSIsoft PI, and leading HAZOP and LOPA reviews with operators and maintenance staff. I am working towards Chartered status with Engineers Australia, and I take pride in writing clear procedures that people on night shift can actually follow.
I would welcome the chance to discuss how I could support the continuous-processing project and your wider improvement programme. I am available for an interview at your convenience and can visit the site at short notice. Thank you for considering my application; I look forward to hearing from you and learning more about the team.
Kind regards,
Zoe Palmer
Skills to mention
Employers hiring a chemical engineer often look for these. Name the ones you really have, with an example.
Phrases you can borrow
Change the details to your own, then copy them into your letter.
I enjoy turning plant data into small, practical changes that make a process safer and more consistent.
My scale-up experience has taught me to respect the gap between a simulation and a working reactor.
I treat every HAZOP action as a commitment to the people who run the plant, not a box to tick.
I am at my best when I can pair a mass balance with a conversation on the plant floor.
Tips for a chemical engineer cover letter
- Name the process, product or unit operation you worked on so the reader can picture your plant experience.
- Quantify improvements in yield, off-spec rate, energy use or chemical consumption rather than listing duties.
- Mention process safety work such as HAZOP, LOPA or MOC, because hiring managers screen hard for it.
- List simulation and data tools you genuinely use, like Aspen HYSYS or a plant historian, not every package you have seen.
- Show you can communicate with operators and maintenance teams, not just other engineers.
Mistakes to avoid
- Describing degree projects at length while giving little detail about real plant results.
- Ignoring process safety, which suggests you may not prioritise it on site.
- Overloading the letter with acronyms that HR screeners will not understand.