Date and Time :

Wednesday, July 23, 2025 19:00-20:30 (18:30 Door open)

Host :

Amazon Web Services Japan G.K.

Description :

This event offers a unique opportunity to hear directly from international AWS users. Engage with the
community, learn from real-world use cases, and gain insights into AWS-driven development.

Agenda :

• 18:30 - 19:00 Open networking
  Connect with fellow participants before the presentations begin. We will provide some food and drinks, but feel free to bring your own food and drinks as well.

• 19:00 - 19:05 AWS event opening - AWS organizer & Paul McMahon
  Introduction to the international developer community in Japan and an overview of AWS usage among international developers.

• 19:05 - 19:30 Building a Real-time Market Data Streaming Platform with AWS - Akis Papaditsas
  Every morning when the market opens, Monex’s real-time market data platform faces a predictable but intense traffic surge—one that ebbs by the evening. To meet these daily spikes and the more unpredictable swings driven by market volatility, our team at Monex Securities engineered a real-time data streaming platform purpose-built for the fast-paced demands of financial services. In this talk, we’ll share how we designed a fan-out architecture on AWS, paired with dynamic scaling, to ensure critical market data is delivered with minimal latency—even under extreme load. We’ll walk through the architectural decisions that enable low-latency delivery, fault tolerance, and operational resilience, and discuss how we balance performance with reliability in a highly regulated, time-sensitive domain.

• 19:35 - 20:00 Scaling Infrastructure with AWS - Tony Valderrama
  During Super Bowl LIX (2025), FOX / Tubi partnered with Momento to process 2M viewer quality events per second from 15M devices simultaneously streaming the game, driving real-time operational decisions about content delivery, network optimization, and issue resolution. We'll pop open the hood to explore some of the infrastructure techniques employed by Momento Accelerator to transform more than 20B critical data points into live metrics with zero errors.

• 20:05 - 20:30 Open Networking
  An opportunity to discuss the presentations and network with other participants.
  

Speakers :

• Paul McMahon
  Founder of TokyoDev, a job board and community for international software engineers in Japan. Paul moved to Japan in 2006 and has founded three businesses, all utilizing AWS.

• Akis Papaditsas
  Akis is a senior software engineer at Monex, Inc., a leading online brokerage firm in Japan that offers financial products to retail investors. He has a broad experience in the Finance and other industries, developed the internal trading systems for Morgan Stanley in Tokyo, ported IBM mainframe programs from RPG to C# in London, written game engine tools in C# when XNA and WPF were cool. Outside of work, you can find him at the local craft beer bar in your Tokyo neighborhood and at remote beaches in Greece and Miyazaki prefecture in the summer.

• Tony Valderrama
  Tony is the Head of Product at Momento, a US-headquartered startup that makes hyperscale infrastructure easy for leading global companies like Capcom, Paramount, and FOX. Trained as a software engineer at MIT, his career has spanned developing the operations platform for the Mars rovers at NASA JPL, co-founding an AR/VR engineering visualization startup, and improving the UX of internal infrastructure at Meta / Facebook. Tony loves sake (+ rum + whiskey), board games, and working remotely all over Japan!