Meet Guy Rahat, Data Science and Data Operations Team Lead

Harmonya Stories
4 min readMar 15


Meet Guy Rahat, the brilliant mind behind the successful data science and data operations teams at Harmonya. As the Data Science and Data Operations Team Lead, Guy has played a pivotal role in shaping the company’s data-driven strategies and optimizing its operations. But Guy’s expertise doesn’t stop at work — he’s also a passionate adventurer, always seeking the next thrill in the great outdoors.

When he’s not crunching numbers, you can find Guy exploring the world’s most beautiful mountains, diving into the depths of the ocean, carving up the slopes on his snowboard, or indulging in the latest culinary delights in Tel Aviv. With an insatiable thirst for new experiences and a sharp analytical mind, Guy brings a unique perspective to everything he does.

What do you do at Harmonya?

I’m the Data Science and Data Operations Team Lead here at Harmonya. As a team lead I’m responsible for the day-to-day work, making sure everybody has what they need to excel while ensuring the team is working on the right things that will create an impact for the company.

On the other hand, I’m responsible for growing the team’s headcount so we can do more to achieve Harmonya’s ambitious goals. This is my main focus in addition to making sure everyone on the team enjoys their work and has the opportunity to grow professionally.

Hear Guy’s Answers to the Lightning Round Below

How would you describe the culture at Harmonya?

The work culture is very impact driven. We ensure the work we’re doing will create an impact and help the company in a certain way — either by really succeeding in our task and achieving the KPI we set out to achieve, or by learning a new way of how not to do it, and succeeding the next time.

Other than that we work two days a week from the office (some people come a lot more because they enjoy it), which I think is a good balance, you have time to work from home which enables more focused work and flexibility in managing your time. On the other hand you have two days with everyone, and their dogs, in the office which is always fun and a great opportunity for face to face discussions.

Climbing Potosi, Bolivia

What is an exciting project you’ve worked on you want to share? What was the impact?

A year and a half ago we had a huge proof of concept with a global top-five retailer. As part of this POC we developed our trends detection algorithm.

The development process was really interesting. In the beginning we didn’t know exactly what we wanted the solution to look like. We developed an iterative process with the Product Management Team and iteration by iteration we added features and saw progress until we felt we landed in a good place for the customer. We then aggregated all the features into a single score which we solved in a simple and elegant way.

Our trends detection has developed since then but the foundations and ideas are still the same. This project was a big pillar in the success of the POC and worked perfectly in a live demo.

Snowboarding in Austria

What do you do for fun outside of work?

I love spending time with my girlfriend and our dog. Our dog is named Bob, and he really loves to eat. He has a ton of character. We love to teach him new tricks — he recently learned how to give a kiss. Every time we finish a training session he gets annoyed because he wants to keep going — he just wants more treats!

I enjoy the outdoors and doing sports of any kind, though lately I’ve mostly been running. I’m actually healing from a running injury right now, so I’m building up my endurance again slowly over time to get to faster paces and longer distances. And I definitely love trying new foods and hanging out with friends, which I try to make time for each week.

What’s something on your bucket list?

I love any water sports and specifically diving. I love the calm of being in water and seeing the wildlife in their own home. So for me, a bucket list item is diving in the Great Sardine Run. The Sardine Run is a migration of billions of sardines. The sardine clusters are bucket-list worthy by themselves, but when adding the thousands of birds, dolphins and sharks who come to feed on the sardines you get nature in its wildest form.

Diving in Eilat

What advice do you have for someone who is just joining Harmonya?

In the beginning I would say don’t be afraid to ask questions to understand why things are the way they are. Once you start understanding what’s important to the company, feel free to suggest ideas and say what’s on your mind in discussions.

Who do you want to nominate to be interviewed next month?

Noa. She joined Harmonya as a student job but since then she finished her degree and works full time and has already been part of some interesting projects.



Harmonya Stories

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