About Me

Hello there 👋

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I am Pubudu Jayawardana. Thanks for visiting my personal website.

I am based in the Netherlands 🇳🇱, originally from Sri Lanka 🇱🇰
I work as a senior solutions software engineer (cloud engineer) at PostNL, the Dutch national postal service.
I am also an AWS Community Builder (since May 2021) in the Serverless category.
A frequent blogger and public speaker, frequently engaging with the tech community.
AWS certified - Solutions Architect Professional.
Proficient in a range of technologies, including AWS, Serverless, EDA, AWS CDK, and Python.
Passionate about sharing my experiences and learnings, and always open to learning from others.

Connect 🌐

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https://www.linkedin.com/in/pubudusj
https://twitter.com/pubudusj
https://github.com/pubudusj
https://medium.com/@pubudusj
https://dev.to/pubudusj

Public Talks 🎤

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I love public speaking and below are some of the events where I’ve had the privilege of participating as a speaker.

2026

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1. AWS Summit Amsterdam - DevChats DEV209 Building modern serverless applications with AWS Lambda capabilities
2. AWS re:Invent re:Cap - AWS Lambda tenant isolation

2025

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1. AWS Community Day CEE 2025 - Budapest - Rearchitecting a mission-critical serverless application for multi-tenancy
2. AWS Summit Stockholm 2025 - Rearchitecting a mission-critical serverless application for multi-tenancy

2024

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1. AWS Re:Invent 2024 - From single to multi-tenant: Scaling a mission-critical serverless app (DEV341)
2. AWS Community Day Netherlands - Moving a mission-critical serverless application from single-tenant to multi-tenant
3. JAWS Pankration 2024 - Simplifying AWS Architectures: Exploring Lambda-less Solutions.
4. AWS Summit Berlin 2024 - Design a mission-critical serverless application for high resilience.
5. AWS Community Day Nordics 2024 - Copenhagen - Design a mission-critical serverless application for high resilience.
6. AWS Meetup The Hague - PostNL - Design a mission-critical serverless application for high resilience.

2023

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1. AWS Community Day Amsterdam 2023 - How to achieve resilience in a high-performance Serverless system.
2. Post-AWS On Tour Meetup Amsterdam - What can AWS Step Functions offer you to make your life easier?
3. AWS Summit Amsterdam 2023 - Large scale parallel data processing with Step Function Distributed Map.
4. AWS Summit Berlin 2023 - Large scale parallel data processing with Step Function Distributed Map.
5. AWS re:Invent 2022 re:Cap Amsterdam - How to achieve resilience in a high-performance Serverless system.

2022

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1. AWS re:Invent 2022 - DevChats on Building a smart door bell with AWS Serverless.
2. Serverless Saturdays, AWS UG Tirupathi India - Build a simple leave management system with AWS Serverless.
3. AWS User Group Colombo, Sri Lanka - Manage webhooks at scale with AWS Serverless.
4. AWS User Group Coimbatore, India - Create a Smart Doorbell with AWS Serverless.

2021

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1. JAWSpankration by AWS User Group Japan - How to create a simple OTP system with AWS Serverless services.

Previous Nextsads

Podcast Appearance 🎙️

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• Amazon EventBridge Pipes: A new approach to event driven architecture @ DevOps with Zack