Team

The plant and the molecule.

Reflux is built by two founders who split the problem down the middle. One has designed and run the processes our customers run. The other builds the chemistry models that predict them.

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Two founders One of us reads the plant. The other reads the molecule.

Most teams building for this industry have one half of that.

Who builds Reflux.

Nathan Ruberto
Co-founder & CEO Nathan Ruberto

A chemical engineer who moved into software and AI. Nathan studied chemical engineering at the University of Waterloo and has worked across pulp and paper, nuclear and automotive, including manufacturing and powertrain simulation at Tesla. At Waterloo he led a simulation design team and was president of the Chemical Engineering Student Society. His background also includes process design, HVAC and algorithmic predictive modelling. He went through the NEXT Canada accelerator, where he won the Hepburn Valedictorian award and where Reflux was conceived. At Reflux he leads business operations and strategy, growth and direction, and the engineering of the software and its UX.

  • Chemical engineering, Waterloo
  • Tesla
  • Cameco
  • NEXT 36
Jonathan Bell
Co-founder & CTO Jonathan Bell

A chemist who moved into machine learning. Jon studied chemistry and biochemistry before a master’s in artificial intelligence at UCL. He has spent the past few years on AI and machine learning research for chemistry, including models that obey physical conservation laws and quantum yield prediction. His background also includes wet-lab work in photochemistry and photosensitisers, research in neurogenetics and molecular biophysics, and experience in commodities. At Reflux he leads AI research and development, building systems that reason across chemical models, coordinate engineering software, and turn process objectives into executable workflows.

  • Chemistry undergraduate
  • AI and machine learning, UCL
  • Yale School of Medicine
  • Orchestration layer

How the work splits.

Domain The plant side

The workflows in the product are ones Nathan ran by hand first, in nuclear, pulp and paper, chemicals, and automotive.

Models The molecule side

Jonathan builds the chemistry models and the layer that drives real software. His research gets checked against lab results, not benchmarks.

Overlap Both of us read the output

Neither of us has to take the other's word for whether a result is right. That is the review step we are building into the product.

Small team. Real plants. Open roles.

If you build software for engineers, we would like to hear from you. If you run simulations for a living, we would like to hear from you more.

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