Aleksandar Simovic
Staff Engineer at Mixmax
Belgrade, Central Serbia
Summary
🤩
Rockstar🎓
Top SchoolAleksandar Simovic is a staff engineer and serverless architect with 11+ years of experience building and operating highly scalable AWS-native products used by 100,000+ customers. He blends hands-on engineering in JavaScript/Node.js, TypeScript, Swift and occasional Rust/Go with product-facing work—shipping real-time file transfer systems, developer-facing APIs, and serverless platform features like Stedi Functions and Buckets. An AWS Serverless Hero and coauthor of two books on serverless and real-time GraphQL, he is an active open-source contributor to well-known projects such as claudia.js (bot builder and Lambda deployment tooling). Based in Belgrade, he co-organizes the JS Belgrade community and brings a pragmatic, Wardley-mapping-informed approach to architectural decision-making. Equally at home debugging platform-level issues or sketching strategy, he’s known for turning complex integration challenges into reliable serverless solutions.
11 years of coding experience
15 years of employment as a software developer
Gimnazija ČačakInformation Systems and Technologies, Information Systems and Technologies at University of Belgrade
Serbian, English, German, Hebrew
Stackoverflow
436reputation
17kreached
5answers
0questions
Github Skills (31)
apim10
javascript10
apidoc10
aws-lambda10
telegram10
api10
api-gateway10
serverless10
nodejs10
serverless-functions10
chatbot10
stripe-api10
command-line-interface9
comand-line9
newline9
Programming languages (6)
Github contributions (5)
claudiajs/claudia-bot-builder
Jun 2016 - Jan 2018
Create chat bots for Facebook Messenger, Slack, Amazon Alexa, Skype, Telegram, Viber, Line, GroupMe, Kik and Twilio and deploy to AWS Lambda in minutes
Role in this project:
Backend Developer
Backend DeveloperContributions:6 releases, 129 commits, 33 PRs in 1 year 8 months
Contributions summary:Aleksandar implemented features related to bot integration with various platforms like Telegram, Skype, Line, Viber, and GroupMe. They focused on setting up the necessary API endpoints and integrating with platform-specific APIs for sending and receiving messages. The user also contributed to parsing messages and formatting responses for different platforms, demonstrating a good understanding of bot development and API integrations.
aws-lambdachatbotlambdaslacktelegram
claudiajs/example-projects
Jun 2016 - Dec 2018
Simple example projects that show how to use ClaudiaJs
Role in this project:Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:7 commits, 5 PRs, 6 pushes in 2 years 6 months
Contributions summary:Aleksandar contributed to the development of serverless functions using Claudia.js for payment processing with Stripe, including both the front-end HTML and back-end API logic. They implemented core payment functionality, including the handling of tokens, amounts, and currency. The user also demonstrated DevOps skills by replacing a rsvg binary and adding Pandoc Lambda layers for file conversion, likely related to the project's goal of providing example projects.
claudiajs
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