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gantengxon Ask HN: What are you working on? (September 2026)

It's a simple PGN app to help capturing chess notation from score sheet and fix the mistakes

Often my son and I made mistakes (mixing up b and B, or wrong rank, missing some moves) writing the notations and existing PGN parser simply stop at the first error and discard the rest. ChessNotate highlights the error while maintaining the original moves so you can see if your fix is actually fixes the remaining of the moves (or not)

Used it in the recent chess tournament and it's been really helpful

gantengxon Ask HN: Who wants to be hired? (December 2025)

Location: Singapore

Remote: Yes (open to hybrid/onsite in Singapore)

Willing to relocate: No

Technologies: Java, Golang, TypeScript, JavaScript, Rust, Node, PostgreSQL, Kafka, Ansible, Kubernetes, Terraform, React Native, Expo, React

Resume: https://ronaldsuwandi.com

Email: ronald@ronaldsuwandi.com

Engineer with 16+ years building scalable systems and leading technical initiatives. I've worked across banking, gaming, government, and startups, solving complex technical problems while mentoring engineers and working closely with product teams. Strong in Java, Golang, TypeScript, Rust, and Kafka. Open to remote work with Asia-Pacific timezone overlap.

gantengxon Ask HN: Who wants to be hired? (November 2025)

Location: Singapore

Remote: Yes (open to hybrid/onsite in Singapore)

Willing to relocate: No

Technologies: Java, Golang, TypeScript, JavaScript, Rust, Node, PostgreSQL, Kafka, Ansible, Kubernetes, Terraform, React Native, Expo, React

Resume: https://ronaldsuwandi.com

Email: ronald@ronaldsuwandi.com

gantengxon Ask HN: What are you working on? (October 2025)

I built a routine management app for my kids (7 and 10) called "Oh Yah!" after their constant "Oh yah! I forgot" responses about homework

Link: https://ohyahapp.com

Interesting challenge was designing for minimal distractions while keeping setup simple for parents. Timer-locked navigation so kids can see what's next but can't start other tasks or switch profiles. Also refactored from schedule-centric (nightmare to maintain) to task-definitions as first-class citizens, which made creating schedules way easier

React Native/Expo + Firebase. On the App Store after months of dogfooding with the family

gantengxon Show HN: I built a simple ambient sound app with no ads or subscriptions

Thanks for this! Really appreciate it that it has no ads. Curious though, is the sound all generated on the fly or is it static audio file?

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

Thanks!

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

Thanks for this. Our child psychologist recommended structured routines, and paper-based scheduling just didn't work for us hence the app

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

I did consider that early on, but decided against it for now. Adding social features would be a privacy nightmare (especially with kids involved) and would significantly complicate both the UX and codebase

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

Fair points, and I appreciate the candid feedback. The demo tasks were chosen to showcase different task types (timed, photo-proof, etc) rather than being prescriptive about what kids should do. But I can see how it reads as "tiger parent starter pack"

For context: my older son genuinely enjoys chess and piano, and this structured schedule approach was recommended by their child psychologist. We tried paper-based scheduling but it didn't stick, so my wife asked me to build an app to help

Your point about useful adult skills is well taken. The hope is they internalise the habit of planning and following through, so eventually they can set their own schedules. We'll see how it goes

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

Ah we're pretty similar in that regard. Officially their screen time is 30min on weekdays (excluding the app usage and chess.com) so the app basically digitise that whiteboard + timer concept

Photo proof actually was my wife's idea. She wanted to verify the task quality when she wasn't at home - similar to your audit capability

I guess the 12year old battles will be coming for me next.. Not exactly looking forward to the puberty haha

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

I am indeed an asian haha

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

Glad that works for you! We tried paper-based routines but they didn't stick for us. The timer helps them realize tasks take less time than they think, and the photo proof solves disputes about task quality when sometimes their "done" meant rushed with minimal effort :D

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

Thanks! Glad it resonates. The app is designed specifically for kids with a simplified UX and parent mode, so it might feel too basic for adults. However, the core concepts (ordered tasks, focus timer, photo completion) could work. Worth trying the trial to see if it fits :)

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

In this case, navigation means in-app navigation. When a task timer is running, kids can't switch to other tasks, go back to the main screen, or change profiles. They have to complete the current task first

The goal is to keep them focused on one thing at a time without the temptation to jump around :)

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

Thanks! They actually liked the photo part. Right now just focusing to handle daily routine but could expand later depending on the feedback

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

Yeah, that's a valid concern. We use an older spare iPhone for this, which worked out well. iOS doesn't have a "Kids Corner" equivalent unfortunately - you'd need to use Screen Time restrictions to lock down the device (block apps/calls/etc) but still need to unlock the phone

gantengxon Show HN: Oh Yah – Routine management app I built for my sons

Thanks! This was my wife's idea and I thought it's interesting but was skeptical at first. But after we started using it, it actually helped a lot! Much less whining/crying and a lot less stressful for my wife and I

So at least it works for my family, and just like you said, it's a huge win by itself :)

gantengxon Font Comparison: Atkinson Hyperlegible Mono vs. JetBrains Mono and Fira Code

For the monospace font I still revert back to DejaVu Sans Mono/Menlo. Somehow other fonts just doesn't click and feels a bit off

gantengxon Kafka without ZooKeeper

Is there any message ordering guarantee in NATS? With Kafka you can achieve this by using keyed message and messages in the same partition will always be ordered

Disclosure: I work for Confluent

gantengxon Ask HN: Who is hiring? (October 2018)

We are a security-based start-up based in Singapore with its Australian parents’ company.

Currently we are looking for people (Singaporean citizens/PR) to join our fun loving team for the role below:

- Software Test Engineer: https://www.mycareersfuture.sg/job/software-test-engineer-se...

- Project Manager: https://www.mycareersfuture.sg/job/project-manager-technolog...

Our tech stack: Swift, Java, TypeScript, Mongo, Docker, Kubernetes, Helm

gantengxon Andrew Ng is raising a $150M AI Fund

That's a really good summary. Thanks for posting it :-)

gantengxon Finding an Alternative to Mac OS X

except that Hackintosh not exactly legal :-)

gantengxon Ask HN: Who is hiring? (December 2016)

By the way, would be great if anyone who is applying to drop a comment here, so we can filter out non-HN applicants

gantengxon Ask HN: Who is hiring? (December 2016)

What we do: Eyeota is the global leader for audience data with over 2 billion unique profiles. Eyeota provides marketers with the data they need to reach the right online audiences and cut campaign waste whilst also enabling publishers to monetize their audiences more widely. In addition, our data delivers deep audience insight to both marketers and online publishers to help them understand their customers in a new way – as human beings. Eyeota supplies third party audience data to all major global and regional ad buying platforms, trading desks, DSPs, DMPs and ad networks. The company was founded in 2010 and has offices in Berlin, London, Melbourne, New York, Singapore, Sydney and Tokyo.

Who we're looking for: Full stack developer to join our team in Singapore. In this role, you will be working in close collaboration with a team of highly empowered, experienced developers who are building a high-performance, highly scaled global platform.

Some of the technologies that we use: Java, Clojure, Apache Cassandra, ElasticSearch, Kafka, Ember.js, Ansible

To apply: https://www.linkedin.com/jobs/cap/view/229867955?pathWildcar... or drop a comment

gantengxon Ask HN: Who is hiring? (November 2016)

Eyeota is the global leader for audience data with over 2 billion unique profiles. Eyeota provides marketers with the data they need to reach the right online audiences and cut campaign waste whilst also enabling publishers to monetize their audiences more widely. In addition, our data delivers deep audience insight to both marketers and online publishers to help them understand their customers in a new way – as human beings. Eyeota supplies third party audience data to all major global and regional ad buying platforms, trading desks, DSPs, DMPs and ad networks. The company was founded in 2010 and has offices in Berlin, London, Melbourne, New York, Singapore, Sydney and Tokyo.

We are looking for both experienced Backend developer (Java) and Full stack developer to join our team in Singapore and be instrumental in taking our products to the next level. In this role, you will be working in close collaboration with a team of highly empowered, experienced developers who are building a high-performance, highly scaled global platform.

Some of the technologies that we use: Java, Clojure, Apache Cassandra, ElasticSearch, Kafka, Ember.js, Ansible

Full Stack Developer: https://www.linkedin.com/jobs/cap/view/229867955?pathWildcar...

Backend Developer: https://www.linkedin.com/jobs/cap/view/229871315?pathWildcar...

gantengxon Andrew Ng's New Machine Learning Book – Sign up for free draft

Weird, normally hackernews won't allow duplicate links

gantengxon Andrew Ng's New Machine Learning Book – Sign up for free draft

Tried to edit the title but not successful, probably I exceeded the number of characters limit or something..

gantengxon How can back end developers 'practice'?

I think you can just build some webapp (front end can be very simple, just use angular.js with no styling at all) and focus on the backend?

Or if you absolutely don't want to touch front end at all, perhaps building API backend will do? Although it'll be much harder to showcase your skills

gantengxon Clojure 1.8

Check out Clojure for the Brave and True - http://www.braveclojure.com/

gantengxon BrowserStack was hacked

Yeah, looks like angry ex-employee(s)...