Jun 2023 – Dec 2023 · 6 mos · London, England, United Kingdom

• On top of the Borrowing Engineering org, I set up and supported temporarily Monzo Growth, a brand new Engineering org. I hired internally and externally ~20 ICs and EMs and contributed to the mandate, vision and first set of goals for the new team. Monzo Growth is responsible to incrementally improve how we acquire and engage new Monzo users, via paid, viral and organic means.

Sep 2022 – Mar 2025 · 2 yrs 6 mos · London, England, United Kingdom

• At Monzo I support the all-star Borrowing Engineering team, where we are rethinking how lending can unlock more opportunities for our users.
• Products that I love to grow:
• Monzo Flex: The only Credit Card that adapts to how you want to spread your costs and sets you up for full repayment, always.
• Monzo Rewards: Get cashback for your spend with select merchants. Grown 0->1.
• Monzo Loans and Overdrafts: More traditional banking products with a Monzo spin, to offer the flexibility and transparency that our users need.
• Monzo Homeownership and Mortgages: Intuitively understand and take control of the most important investment and asset you'll probably ever manage, your home.
• Team that I love to support:
• 60 world-class Borrowing Engineers and EMs, including Staff Engineers and Senior EMs.
• Our Monzo QA function, that enables our Engineers to ship product safely.

Sep 2021 – Jun 2022 · 9 mos · London, England, United Kingdom

• At Instagram I lead and scale Data Engineering teams for Reels and Creators across London and the Bay Area. We help Creators find their audience on Instagram and across all the FB Apps, create unique Short-Form Videos in Instagram Reels and successfully make a living out of their passion!
• My teams help us understand Creators and their needs and measure the effectiveness of our products. Our forward-looking work is central in building a data-informed strategy on how to excite our users by leveraging the unique talents of Creators and our engaging Video products.

Feb 2020 – Sep 2021 · 1 yr 7 mos · London, England, United Kingdom

• At Facebook Commerce I lead Data Engineering teams in London, Tel Aviv, New York and Seattle, where I supported some of the best Data Engineers and Data Engineering Managers in the world.
• Our teams are leveraging data to make Facebook Shops one of the top e-commerce destinations in the world. Facebook Shops connects Facebook users with the brands and products they love and enables SMBs and large merchants alike to grow their business online and create jobs, a mission even more relevant in CoVid times.
• Facebook Shops is just one of the Commerce products that we build right here in Facebook London. It takes some serious data work to drive online Commerce at a global scale. Our teams of data magicians makes that happen.

Feb 2019 – Feb 2020 · 1 yr · London, England, United Kingdom

• I support a diverse set of London Data Engineering teams contributing to the core of Facebook Ads. Our teams of Data Engineers directly contribute to helping advertisers design engaging creatives, to developing location-aware advertising, to serving in-app ads, to building out ads integrity systems and all the way to further improving the core of our ad delivery systems.

Oct 2018 – Dec 2018 · 2 mos · Amsterdam Area, Netherlands

• At Marktplaats, an eBay company, I manage a fearless team of Data Engineers. If it has bytes, we structure it, we stream it, we distribute it, we run machine learning on it and connect it back to the product.

Jan 2018 – Oct 2018 · 9 mos · Amsterdam Area, Netherlands

• Squeezing value out of data 24/7 with my team, to drive the metrics our business and our users actually care about.

Oct 2017 – Jan 2018 · 3 mos · Amsterdam Area, Netherlands

• I work at Marktplaats, an eBay company and probably the most advanced classifieds site on earth. My job is finding new ways to leverage data to bring buyers and sellers together, and then getting all the nitty gritty details in place to make it happen.

Jan 2017 – Jun 2017 · 5 mos · Amsterdam Area, Netherlands

• Leveraging the incredible power of data and Machine Learning to answer crucial questions, uncover hidden patterns, understand the present and predict the future, in order to provide ING's clients with relevant, agile and forward-looking products and services.

Aug 2013 – Oct 2016 · 3 yrs 2 mos · Amsterdam Area, Netherlands

• Fully managed all aspects of my own company, including legal, financial, HR, as well as marketing and sales. In addition, I was the lead research engineer and managed a software development team of four programmers, to build together a complex cloud translation service.
• Our fully scalable solution used Artificial Intelligence to automatically manage large crowds of translators to translate texts in collaboration with each other. Each translator brought his own level of expertise and unstable working schedule, and in this complex operating environment the system guaranteed translation quality and timely delivery while minimising cost. It also automated all administrative aspects of translation, from taking orders to accounting and beyond.
• The service was fully developed and while it did not prove a commercial success due to strong competition from established players in the translation industry, it provided me with an incredible all-round business experience that simply money can’t buy.
• Technologies used: Python, Javascript, Angular.js, node.js, HTML, CSS, Amazon Web Services (AWS) Cloud, PostgreSQL SQL Server, MongoDB NoSQL, Linux server.

Feb 2012 – Aug 2013 · 1 yr 6 mos · Xerox Research Centre Europe, Grenoble, France

• At the research labs of Xerox in Grenoble, I managed all aspects of the involvement of the company in an international research project (TransLectures). We developed the machine translation technology for an end-to-end system to add multilingual subtitles to the video lectures of online courses, using both automatic and Human Computer Interaction technologies. The project included partners from Spain, Germany, France, Slovenia and the United Kingdom.
• The project management tasks included work planning, co-ordination with the international partners to negotiate work package execution and timely delivery, time keeping, budgeting and so on.
• In addition to functioning as a project manager, I also led the research and engineering activities for the part of the project concerning machine translation, patented one of my inventions, as well as co-led a bid to spin off the machine translation commercialisation activities of the research group in a new independent company.
• Technologies used: Java, C++, Perl, Python, Microsoft Azure Cloud, Linux server, Moses, Joshua.

Jan 2000 – Jan 2005 · 5 yrs · Athens, Greece

• I programmed and managed information technology projects in the financial sector. I was responsible for the development from scratch and the maintenance of the Letters of Guarantee application for a large commercial bank (Alpha Bank).
• I was also the leader of a small team that developed a clustered database and a distributed system to daily collect and centrally store and analyse all transaction logs from the hundreds of branches of the bank around the country. I was in my early twenties at the time.
• My last assignment was to project manage the deployment of the first digitisation and automatic processing system for bank cheques in Greece. The project included the automatic recognition of printed as well as hand-written characters and training the OCR models was my first serious exposure to applied Artificial Intelligence. I was so inspired by the experience that I decided to quit my job and become an AI scientist.
• Technologies used: Java, Visual Basic.NET, C#, ASP.NET, Microsoft SQL Server (MS-SQL), Windows server.

Jan 1998 – Jul 2000 · 2 yrs 6 mos · Athens, Greece

• I logged more than 1000 instruction hours teaching adults on how to use Microsoft Office and the Internet (yes, people needed help with that back then). I learnt how to give effective presentations and how to pass on knowledge and skills, in order to empower people to use technology to do more with their lives.
• Since then, communicating, teaching and mentoring has been something I immensely enjoy and has been a central part of all my roles and engagements throughout my career.

Jan 1997 – Aug 2000 · 3 yrs 7 mos · Athens, Greece

• I worked on a variety of programming and web development projects, with the additional luck of being exposed early to international experience by working for a Norvegian shipping technology company to design and set-up their first dynamic website.
• I also launched a fully featured Greek Internet auction site of my own. I coded everything myself, found out how to get the e-mails for most Greek Internet users of the time, developed an e-mail link click-through tracking mechanism when these things did not widely exist, got a few thousands of users on board and gave a small interview about the whole thing to a computer magazine. In the end I decided to move on with the IT consultant opportunity, as I felt that it was a time to learn more and do less.
• Technologies used: Visual Basic, Microsoft ASP, HTML, CSS, Microsoft SQL Server (MS-SQL), Windows server.