marius-s (u/marius-s)

marius-s commented on Ask HN: Who is hiring? (September 2025) · Posted by u/whoishiring

azmaty · a day ago

Talk Machine | Founding Engineers | Remote (or London, Dubai, San Francisco) | https://talkmachine.com/jobs

Hello. I’m the founder of Talk Machine, previously founded Citymapper.

We’re working on building a consumer voice product / platform using AI, driven by the mission to improve human communication.

Our application process is unique. Just go to https://talkmachine.com/jobs and send us a voice note and we can begin talking, just like we met in person.

We have 2 specific posts, https://talkmachine.com/jobs/engineer for full stack founding engineers and https://talkmachine.com/jobs/mobile for iOS/Android, but glad to hear from anyone that loves the product/category.

We’re seed funded and can pay competitively + quality stock options (EMI in UK).

You like: talking, consumer, voice, AI, small fast teams, building great products, chasing product market fit

You can also reach out to me at https://talkmachine.com/az. :)

marius-s · a day ago

I’m Marius, Head of Engineering at Talk Machine. We’re a small remote engineering team. If you have any questions - feel free to reach out to me at https://talkmachine.com/marius

marius-s commented on Ask HN: Who is hiring? (February 2024) · Posted by u/whoishiring

marius-s · 2 years ago

Citymapper by Via | London, UK | Onsite or Hybrid (UK based) | VISA

We have built a best in class B2C app for public transportation since 2010 which works in over 400 cities around the world. In March 2023 we joined Via to continue our mission to making cities usable. https://citymapper.com/news/2582/citymapper-joins-via

We are expanding our team and product offering and are looking for engineers to join: https://citymapper.com/jobs

At the moment we are looking for an experienced backend engineer to join the mostly London based team to help us scale the platform to even more users and also develop new capabilities of our app. https://boards.greenhouse.io/via/jobs/7048191002

Any questions you can also send to me directly: marius dot schatke at ridewithvia dot com

marius-s commented on Ask HN: Who is hiring? (January 2024) · Posted by u/whoishiring

gwulfwud · 2 years ago

hi, email you provided does not seem to work.

marius-s · 2 years ago

Sorry, try Marius at Citymapper dot com

marius-s commented on Ask HN: Who is hiring? (January 2024) · Posted by u/whoishiring

marius-s · 2 years ago

Citymapper by Via | London, UK | Onsite or Hybrid (UK based) | VISA We have built a best in class B2C app for public transportation since 2010 in over 400 cities around the world - and have joined Via Transportation in March 2023, continuing our mission to making cities usable.

https://citymapper.com/news/2582/citymapper-joins-via

We are expanding our team and product offering and are looking for engineers to join: https://citymapper.com/jobs

At the moment we are looking for an experienced software / platform engineer to join the mostly London based team to help us scale the platform to even more users and places around the world. https://boards.greenhouse.io/via/jobs/7048191002

Any questions you can also send to me directly: marius at ridewithvia .com

marius-s commented on Ask HN: Who is hiring? (December 2023) · Posted by u/whoishiring

marius-s · 2 years ago

Citymapper by Via | London, UK | Onsite or Hybrid (UK based) | VISA

We have built a best in class app for public transportation since 2010 - and have joined Via Transportation in March 2023, continuing our mission to making cities usable.

https://citymapper.com/news/2582/citymapper-joins-via

We are expanding our team and product offering and are looking for engineers to join: https://citymapper.com/jobs

I particular we are looking for an experienced software / platform engineer to join the team to help us scale the platform to even more users and places around the world. https://boards.greenhouse.io/via/jobs/7048191002

Any questions you can also send to me directly: marius at ridewithvia .com

marius-s commented on Ask HN: Who is hiring? (June 2023) · Posted by u/whoishiring

marius-s · 2 years ago

Citymapper by Via | London, UK | Onsite or Remote (within our coverage) | VISA

We have built a best in class app for public transportation since 2010 - and have joined Via Transportation in 2023, continuing our mission to making cities usable. https://citymapper.com/news/2582/citymapper-joins-via

We are expanding our team and product offering and are looking for engineers to join: https://citymapper.com/jobs

Any questions you can also send to me directly: marius at ridewithvia .com

marius-s commented on Citymapper Joins Via content.citymapper.com/ne... · Posted by u/gsa

gibolt · 2 years ago

Absolutely love Citymapper for finding pleasant bike routes! Really hope this doesn't end up handicapping the product or spreading focus thin.

Have recommended it to so many people. Biking wouldn't be the same without it.

marius-s · 2 years ago

Thank you for the feedback and love. Cycling and walking are indeed core to the app experience and multimodal routing and will remain important.

marius-s commented on Citymapper Joins Via content.citymapper.com/ne... · Posted by u/gsa

leftcenterright · 2 years ago

Congrats to the team!

Could you give an idea about the tech stack powering citymapper?

marius-s · 2 years ago

Thanks - and good question.

We run a large deployment of services to support millions of daily active users across the 450+ cities that the Citymapper app operates in - all on AWS EKS. Most of the code of the backend services is written in Python and we have CPP and some Go services or modules as we deal with a lot of CPU and memory intensive workloads (eg routing) as well as high I/O workloads (we are using 1000s of different data sources)

The apps and SDK are written in Kotlin / Swift / React

marius-s commented on Citymapper Joins Via content.citymapper.com/ne... · Posted by u/gsa

pedro2 · 2 years ago

Can I expect a somewhat lesser focus on European cities in 1 to 2 years while VIA expands its capabilities on Northern America?

marius-s · 2 years ago

There is actually a great coverage area overlap between VIA and Citymapper - esp. in North America and Europe. I wouldn't expect Europe not not be a focus given the huge transit market size.

marius-s commented on Citymapper Joins Via content.citymapper.com/ne... · Posted by u/gsa

marius-s · 2 years ago

Hi,

Marius here - VP Engineering for Citymapper (powered by Via)

We are excited about the opportunities this creates for the product and team. We are looking forward to join an excellent tech company. Happy to answer any questions.

And we are hiring as we are expanding our product and team. For openings to work on the Citymapper app and tech please visit https://citymapper.com/jobs or write to marius@citymapper.com