Slobodan Stojanović's Avatar

Slobodan Stojanović

@slobodan.me

CTO and co-founder of Vacation Tracker. AWS Serverless Hero, JS Belgrade meetup co-organizer, and co-author of the “Serverless Applications with Node.js” book, published by Manning Publications.

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30.05.2023
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Latest posts by Slobodan Stojanović @slobodan.me

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Top 7 Featured DEV Posts of the Week Welcome to this week's Top 7, where the DEV editorial team handpicks their favorite posts from the...

Nice that my article on AI agent memory is in the Top 7 Featured DEV Posts of the Week! Even better because AWS Hero @slobodan.me is there too! #DevCommunity

dev.to/devteam/top-...

24.09.2025 08:02 👍 1 🔁 1 💬 0 📌 0
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Employees, AI, and AI employees Will AI take our jobs? The answer to this question depends on what our job actually is. Here's a thought process with a few (probably wrong) conclusions about employees, AI, and AI employees, includin...

My new article: Employees, AI, and AI employees.

AI already writes code, and while it's still a bit limited, the progress in the past 2 years is impressive! What will happen in the next decade? Will software developers still be a thing? And can we have AI cofounders?

📖👉 slobodan.me/posts/employ...

18.09.2025 19:18 👍 2 🔁 0 💬 0 📌 0
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Top 7 Featured DEV Posts of the Week Welcome to this week's Top 7, where the DEV editorial team handpicks their favorite posts from the...

Check out this week's Top 7 posts: LangChain4J review by @frankel.ch, AI agents guide by @slobodan.me, gamejam coding by @jacklehamster.bsky.social, and more!
#Java #AWS #GameDev #VibeCoding #Cursor

dev.to/devteam/top-...

07.05.2025 13:07 👍 7 🔁 4 💬 0 📌 0
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How AI Agents work and how to build them AI Agents sound complicated, but they are not. And, by the way, you have all the skills you need to build an AI Agent. This article is a long but simple story about AI Agents.

New long post:
AI Agents: how do they work and how to build them

slobodan.me/posts/ai-age...

25.04.2025 21:14 👍 1 🔁 0 💬 0 📌 0
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Vacation Tracker is featured on the Slack App Store homepage!

19.11.2024 16:23 👍 3 🔁 0 💬 0 📌 0

Oh wow, this was a long time ago! :)

14.11.2024 12:52 👍 1 🔁 0 💬 1 📌 0
Serverless moments with AWS Lambda and Amazon ECS | Amazon Web Services
Serverless moments with AWS Lambda and Amazon ECS | Amazon Web Services YouTube video by Amazon Web Services

The community has been at the heart of #serverless. See "Serverless Moments with Serverless Heroes" youtu.be/oubk8Au4o7c

13.11.2024 20:24 👍 10 🔁 4 💬 1 📌 0
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5 Prompt Engineering Tips for Developers Short story long: learn 5 practical tips for writing better LLM prompts, understand how tokens and prompting work, and see real examples of improving AI responses. A developer-focused guide covering p...

It's been a while, but I finally wrote a new article:

slobodan.me/posts/5-prom...

06.11.2024 00:40 👍 2 🔁 1 💬 0 📌 0
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5 Prompt Engineering Tips for Developers Short story long: learn 5 practical tips for writing better LLM prompts, understand how tokens and prompting work, and see real examples of improving AI responses. A developer-focused guide covering p...

It's been a while, but I finally wrote a new article:

slobodan.me/posts/5-prom...

06.11.2024 00:40 👍 2 🔁 1 💬 0 📌 0

It was fun, but in-person events are still a lot better.

28.10.2024 17:52 👍 5 🔁 0 💬 1 📌 0
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Day 29: Svelte Tooltips and AWS SigV4 - Knowlo Slobodan and CofounderGPT connect the Svelte Web Component to API Gateway using Cognito Identity Pool credentials and SigV4, and show a demo of the Knowlo app!

A new day in building a product with CofounderGPT.

Day 29: Connecting the Svelte Web Component with AWS using Cognito Identity Pools and SigV4 and a demo!

https://knowlo.co/blog/day-29-svelte-tooltips-and-aws-sigv4/

21.07.2023 15:13 👍 0 🔁 0 💬 0 📌 0
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Day 28: Migrating Tooltips to Svelte - Knowlo Slobodan migrates a Web Component to Svelte with CofounderGPT's help. They also connect the tooltip to the API using temporary Cognito Identity Pool credentials.

I am back from my vacation, and it's time for Day 28 with #cofounderGPT: using Svelte to build a tooltip web component: https://knowlo.co/blog/day-28-migrating-tooltips-to-svelte/

13.07.2023 14:24 👍 0 🔁 0 💬 0 📌 0
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Advanced GraphQL Architectures: Serverless Event Sourcing and CQRS by Slobodan Stojanović - GitNati... GraphQL is a powerful and useful tool, especially popular among frontend developers. It can significantly speed up app development and improve application speed, API discoverability, and documentation...

My talk “Advanced GraphQL Architectures: Serverless Event Sourcing and CQRS” from React Summit is now available online!

Watch it here: https://portal.gitnation.org/contents/advanced-graphql-architectures-serverless-event-sourcing-and-cqrs.

04.07.2023 19:07 👍 4 🔁 1 💬 0 📌 0
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Day 27: Building an MVP – Tooltips, Shadow DOM, and Web Components - Knowlo Slobodan asks CofounderGPT to assist him in writing a Web Component for tooltips, preparing a component for embedding on users' web apps and testing it.

Day 27 of building a product with #CofounderGPT: Building an MVP – Tooltips, Shadow DOM, and Web Components

https://knowlo.co/blog/day-27-building-an-mvp-tooltips-shadow-dom-and-web-components/

28.06.2023 13:57 👍 1 🔁 0 💬 0 📌 0

As far as I remember, Meta released an open-source tool with “better support” for non-English languages. Can it do transcriptions, too?

22.06.2023 11:42 👍 0 🔁 0 💬 1 📌 0
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Day 25: Building MVP – connecting the dots - Knowlo On Day 25, Slobodan connects the Create Tooltip flow by writing React code and an AppSync Lambda resolver with some help from CofounderGPT and Github Copilot.

Day 25 of the Knowlo project with Lav and #CofounderGPT: creating tooltips using ChatGPT API, and connecting the flow using AppSync Lambda resolver:

https://knowlo.co/blog/day-25-building-mvp-connecting-the-dots/

20.06.2023 17:04 👍 0 🔁 0 💬 0 📌 0
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Day 23: Building MVP – the Devil is in the Details - Knowlo Slobodan asked CofounderGPT to help him with JavaScript resolvers and finish the setup page. They encountered many small obstacles that slowed them down.

Day 23, or working day 23, to be precise, was reserved for connecting the frontend application with our GraphQL queries and mutation. While this was a successful day, #CofounderGPT and I faced many small challenges and obstacles: https://knowlo.co/blog/day-23-building-mvp-the-devil-is-in-the-details

13.06.2023 15:20 👍 0 🔁 0 💬 0 📌 0
Production-ready lambdas with Node.js - Luciano Mammino
Production-ready lambdas with Node.js - Luciano Mammino Luciano Mammino presents “Production-ready lambdas with Node.js” at Sailsconf 2023.#nodejs #lambdas #serverless #sailsconf2023 #sails #sailsconf

The premiere for my Sailsconf talk is already available on youtube for you to set a reminder 😁

HIT THAT "NOTIFY ME" BUTTON PLZ 😇

https://www.youtube.com/watch?v=_OBBwuplpBY

10.06.2023 09:48 👍 1 🔁 1 💬 0 📌 0
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Are VPCs an anti-pattern? In this episode of AWS Bites, we explore the future of Virtual Private Clouds (VPCs) in the context of the zero-trust security trend. We'll dive into the pros a...

It's 2023, as a cloud dev, should you be wasting your time learning and configuring VPCs?

Well, I hate to say "IT DEPENDS", but it's not an obvious conversation, so let's find out the pros and cons of VPCs and when you can get away without them!

https://awsbites.com/84-are-vpcs-an-anti-pattern/

09.06.2023 08:26 👍 1 🔁 1 💬 0 📌 0
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Day 21: Building an MVP – signup flow and GraphQL - Knowlo On Day 21, Slobodan and CofounderGPT solved the issue with AppSync JavaScript unit resolvers and connected the signup and login flow using AWS Amplify

The next step in our #CofounderGPT adventure: adding AppSync JavaScript resolvers and connecting the signup and login flow:

https://knowlo.co/blog/day-21-building-an-mvp-signup-flow-and-graphql/

06.06.2023 15:28 👍 0 🔁 0 💬 0 📌 0

Nice!

05.06.2023 10:00 👍 1 🔁 0 💬 1 📌 0

I think one of the most important skills for software developers today is code review. The amount of code you write will decrease significantly, and the amount of _your_ (generated) code you need to read and review will skyrocket.

03.06.2023 18:04 👍 0 🔁 0 💬 0 📌 0
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Advanced GraphQL Architectures: Serverless Event Sourcing and CQRS @ ReactSummit ReactSummit (https://reactsummit.com) Amsterdam, June 2nd, 2023

Here are my slides from an excellent ReactSummit conference:

https://speakerdeck.com/slobodan/advanced-graphql-architectures-serverless-event-sourcing-and-cqrs-at-reactsummit

02.06.2023 19:24 👍 1 🔁 0 💬 0 📌 0
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React Summit – The Biggest React Conference Worldwide React Summit is an in-person and remote first (hybrid) conference of all things React, gathering OSS authors, top trainers and speakers, as well as web engineers across the globe to meet in Amsterdam and online.

Hello Amsterdam! See you tomorrow at ReactSummit. I’ll speak about advanced GraphQL architectures with serverless and CQRS.

https://reactsummit.com

01.06.2023 15:07 👍 0 🔁 0 💬 0 📌 0

I created a list of AWS related Bluesky users while I was looking for people to follow myself. Hopefully it can help someone else start building their network there as well. If you want to be added or have other people to add, feel free to create a PR.

https://github.com/gunnargrosch/bluesky-lists

30.05.2023 11:55 👍 8 🔁 6 💬 3 📌 0

Day 19 of building a product with Lav and #CofounderGPT: adding auth with Amazon Cognito and serverless GraphQL AppSync.

https://knowlo.co/blog/day-19-building-an-mvp-serverless-graphql-and-auth/

30.05.2023 08:43 👍 2 🔁 0 💬 0 📌 0