What are some of the side income or passive income sources you can suggest?

Here are a few ideas for side income hustles. These are not quick rich schemes. They will start giving you returns after a few years of constant nourishing.

• Make udemy courses
• Start a youtube channel
• Write on a blog/newsletter/twitter/linkedin
• Write Books

Ali Abdaal has a great video I recommend on this topic: https://www.youtube.com/watch?v=GY9lNl3EO1I

Most of the time, passive income is not actually that passive 😅 you have to put tons of effort (often for years) before you start to see any real benefit.

The way I'd think about this is to choose a path where you can't lose: you gain valuable skills by producing the thing (blog, video, podcast), and if you actually succeed, the money is a nice bonus.

For context, my YouTube channel made $9K in 2022, after I spent 2 years working on it, around 10 hours/week: https://youtu.be/KY-L6CoMDEw

"Passive" income as most financial influencers will pitch it is largely a clickbait scam. If there's truly a meaningful passive income opportunity that also has a low startup cost (both in terms of time and money), it will get "mined out" almost instantly by everyone wanting free money.

The only real passive income I can vouch for is putting your money into a high-interest savings account that is FDIC-insured. In the US, that means you're getting 3.5% to 4% yearly return in the current economic climate. However, given that you work for Grab, I imagine that you're likely not in the US. 😅

In order to generate real passive income, you need to invest a ton of time upfront first. Here are the ones I have, one of which you alluded to in your post:

• Medium Writing - My Medium generates around $200 a year, and I have 1,100 followers. I have published around 30 articles that I spent 50+ hours on.
• Android App Monetization - I make 97% of my apps free, but I monetized my Random Name Picker app as an experiment and to help out one of my mentees who was contributing to the app (I was getting them professional experience and giving them $$$ they really needed). The app makes around $750 a year, but it has 1,000,000+ downloads and I have easily spent 1,000+ hours on it.

Something I really want to make clear is that I didn't do either of the above things for money. I really enjoy writing and making sleek mobile apps, so the money was more of a side effect. I think this approach of looking for monetization opportunities on top of stuff you're already passionate about is much healthier.

Tech people are smart, and the market will recover more quickly than people think. The highest ROI thing you can do is to continue building up your fundamental skills as a software engineer IMHO.

Can you suggest some of these for someone who is currently a backend software engineer?

There's a lot of APIs that people want (especially front-end engineers like me), which either don't really exist yet or are too expensive. If you can find a high-demand API, build it out super cleanly (i.e. in a way that it's scalable and lasts forever with minimal maintenance), and charge a reasonable price for it, I could see this making thousands of $$$ per month.

I don't know how much it's making, but here's a cool freemium API I have used in the past: The Cat API