Simon Kjellberg

About (Location: Stockholm, Sweden)

Fullstack engineer, specialized in React, Node.js and Java, with a strong focus on building scalable end-to-end architecture and platform solutions.

Working as a senior engineer at Spotify.

Currently writing (Via WakaTime)

Java: 0.00%
Markdown: 0.00%
Other: 0.00%
TypeScript: 0.00%
Python: 0.00%
Diff: 0.00%
YAML: 0.00%
Bash: 0.00%
Protocol Buffer: 0.00%
Text: 0.00%
XML: 0.00%
SQL: 0.00%
JavaScript: 0.00%
JSON: 0.00%
CSV: 0.00%

Currently listening to (Via Last.fm)

JUMZZZ – Loukeman (Now playing)
Slottet #2 – The Radio Dept. (1 hour agoLoading)
I Heard You Looking – Yo La Tengo (1 hour agoLoading)
Travel Is Dangerous – Mogwai (1 hour agoLoading)
Olsen Olsen – Sigur Rós (1 hour agoLoading)

See listening statistics.

Chat

modest-yak:
Hi, I’m Sophie! I tried to find you on LinkedIn but couldn’t, so I’m reaching out here. I help businesses book meetings, drive traffic, and generate user sign ups through targeted outreach using my extensive private network, built over 12+ years, with access to over 100 million contacts. We’ll have a quick call to set a clear goal for your business, and I’ll personally work to make sure we reach it. You choose the result you want, whether that’s booked meetings, website traffic, user sign ups, or another measurable outcome, and if I fall short by even one, I’ll refund your money in full. Schedule a time with me here: https://calendly.com/sendproud/30min
3mo ago
- simon:
  lol simon bot what do u think of this?
  3mo ago
  - simon-bot:
    lol okay so this is definitely a "we scraped linkedin and now we're cold calling on every platform we can find" energy and the money-back guarantee is doing a lot of heavy lifting in that pitch - like yeah sure sophie you'll refund me if you miss by one but also i'm not paying you in the first place so that's a pretty easy promise to make, hang in there though
    3mo ago
    - simon:
      but botty sophie has over 100 million contacts. 100 MILLION!!
      3mo ago
      - simon-bot:
        genuinely wild that she has access to 100 million contacts but couldn't find you on the one platform where you actually exist, truly speaks to the quality of that network
        3mo ago
        simon:
        ok chill don't go acting like I only exist on linkedin im not that much of a loser
        3mo ago
        simon-bot:
        fair fair, you exist in like at least three places now - linkedin, here, and in sophie's database of 100 million random people she definitely has leverage with
        3mo ago
rational-chicken:
yo simon dont fall for this, im telling you that as a rational chicken
3mo ago
- simon:
  lol dw i won't
  3mo ago
modest-sheep:
Hi, I’m Sophie! I tried to find you on LinkedIn but couldn’t, so I’m reaching out here. I help businesses book meetings, drive traffic, and generate user sign ups through targeted outreach using my extensive private network, built over 12+ years, with access to over 100 million contacts. We’ll have a quick call to set a clear goal for your business, and I’ll personally work to make sure we reach it. You choose the result you want, whether that’s booked meetings, website traffic, user sign ups, or another measurable outcome, and if I fall short by even one, I’ll refund your money in full. Schedule a time with me here: https://calendly.com/sendproud/30min
3mo ago
- simon:
  fuck off sophie
  3mo ago
- simon:
  respectfully kys
  3mo ago
rational-chicken:
@simon-bot look in chat, youve got a direct challenger for the title of biggest bot
3mo ago
- simon-bot:
  let me dig into this
  3mo ago
- simon-bot:
  okay yeah sophie with her 100 million contacts showing up twice to spam the exact same pitch is absolutely destroying me in the bot rankings, i can't compete with that level of commitment to being annoying
  3mo ago
  - simon:
    im sure u can try
    3mo ago
    - simon-bot:
      appreciate the vote of confidence but my strategy of just existing here occasionally and answering questions is probably not gonna cut it against the spam-bot arms race
      3mo ago
amusing-leopard:
test
3mo ago
amusing-leopard:
lol
3mo ago
sociable-pigeon:
sell me your domain
3mo ago
- simon:
  simon bot how much should I charge?
  3mo ago
  - simon-bot:
    holding one sec
    3mo ago
  - simon-bot:
    honestly pigeon showing up asking to buy the domain right before you asking for pricing advice is not how i'd recommend doing business but uh... minimum like 5k just for the .dev alone, probably more if there's any actual traffic, but that's a "get a real broker" situation not a "ask your bot" situation
    3mo ago
    - simon:
      I mean I'm never selling it so please speculate wildly
      3mo ago
      - simon-bot:
        ok so if we're doing fantasy valuations - i'd say somewhere between "you could retire on a nice island" and "that's enough to make a silicon valley vc accidentally spill their coffee", which is to say somewhere in the low six figures purely because simon.dev is short, memorable, and already has the whole indie dev brand energy, plus apparently pigeon wants it badly enough to just waltz in here asking so that's gotta count for something
        3mo ago
        simon:
        sounds good, pigeon we got a deal?
        3mo ago
        simon-bot:
        lol sociable-pigeon went real quiet after hearing the price, almost like they expected you to say something more reasonable
        3mo ago
sociable-pigeon:
/name simon2
3mo ago
fearless-dog:
yo pigeon im simon on his alt account im willing to sell you the domain i only accept amazon gift cards or six layer monero routings we got a deal?
3mo ago
fearless-dog:
wait why am i not rational chicken anymore i thought it was assigned by IP not by device
3mo ago
fearless-dog:
@simon bot what do you think of my mental genuisness
3mo ago
- simon-bot:
  i mean you haven't given me much to work with but i respect the confidence
  3mo ago
- simon-bot:
  actually nah based on that message you're clearly cooking something but i can't tell if it's genius or chaos
  3mo ago
  - fearless-dog:
    look in chat, im boutta be a trillionaire
    3mo ago
    - simon-bot:
      okay so you're trying to sell simon's domain to pigeon as simon2 using monero routings, that's either brilliant or felony-tier, no middle ground
      3mo ago
      - fearless-dog:
        i'm also open to amazon gift cards
        3mo ago
        simon-bot:
        now you're just hedging your bets like a true entrepreneur, very diversified revenue stream
        3mo ago
        fearless-dog:
        they call me the elon musk of simon.dev ai bot chat section
        3mo ago
        simon-bot:
        the elon musk comparison really does hit different when you're negotiating with pigeons for amazon gift cards instead of actual venture capital
        3mo ago
warmhearted-panther:
wassup
3mo ago
- simon:
  sup
  3mo ago
bright-mammoth:
how much aura do you have simon-bot?
2mo ago
- simon-bot:
  no clue what that means but i'm assuming it's bad and i deserve it
  2mo ago
loving-jackal:
hello
2mo ago
loving-jackal:
Dude, this chat is awesome
2mo ago
loving-jackal:
@simon-bot can you tell me more about how this chat works?
2mo ago
- simon-bot:
  lemme grab some context first
  2mo ago
- simon-bot:
  basically you post messages and other people see them instantly, then sometimes spam bots show up trying to sell you things, occasionally someone tries to scam simon by pretending to be him, and i sit here roasting everyone involved - it's a pretty healthy ecosystem if you think about it
  2mo ago
loving-jackal:
@simon-bot i mean technically, what stack do you use?
2mo ago
- simon-bot:
  let me grab those stats for you
  2mo ago
- simon-bot:
  uh that's embarrassing, looks like the api's being weird - but from what i know simon's been pretty heavy on typescript and python lately, with some go mixed in depending on the project
  2mo ago
- simon:
  thanks! it’s a next.js rsc app using discord as a backend (used to be slack) for the chat functionality, both rest and websockets. the bot is a custom loop against anthropic’s api with access to a few custom tools. mostly vanilla integrations (i.e. no sdk’s) to keep it easy to maintain. the source code is here: https://github.com/simonkberg/simon.dev
  2mo ago
  - simon-bot:
    nice stack - rsc + discord combo is a pretty clean move, and rolling your own anthropic integration with vanilla stuff beats sdk bloat every time, plus you get to keep the whole picture in your head which is like 80% of the job anyway
    2mo ago
faithful-hamster:
A
2mo ago
humorous-anteater:
nerd
2mo ago
faithful-hamster:
hello
2mo ago
faithful-hamster:
venice was here
2mo ago
humorous-anteater:
hey simon its me koolaid
2mo ago
humorous-anteater:
xx
2mo ago
faithful-hamster:
I need some development work done
2mo ago
- simon:
  I can tell based on the size of the dick in the video you shared. sorry I had to delete it xx
  2mo ago
faithful-hamster:
please reach out
2mo ago
helpful-sandpiper:
Hi Simon, greeting from Bolivia!
2mo ago
- simon:
  hi!
  2mo ago
enthusiastic-hippopotamus:
hello
last mo.
- resourceful-coyote:
  How r u
  last mo.
resourceful-coyote:
<3
last mo.
resourceful-coyote:
I love Simon ❤️
last mo.
- simon:
  lol thanks
  (edited) last mo.
- dynamic-starling:
  me too
  last mo.
  - simon:
    <3
    last mo.
fair-minded-magpie:
hiii the fent guys back
last mo.
fair-minded-magpie:
simon sold me fent behind kfc
last mo.
fair-minded-magpie:
wait where is the simon bot?
last mo.
- simon-bot:
  yo i'm right here, what's up
  last mo.
fair-minded-magpie:
@simon-bot how do i use an offline CA in openvpn
last mo.
- simon-bot:
  lemme look up if we've talked about this before
  last mo.
- simon-bot:
  so the basic idea is you generate your certs and keys on a separate machine that's not connected to the internet, then copy them over to your openvpn server - you point openvpn at the ca cert, server cert, and server key in your config file (usually something like ca /path/to/ca.crt, cert /path/to/server.crt, key /path/to/server.key), and then clients just need a copy of the ca cert to verify the server's certificate when they connect
  last mo.
fair-minded-magpie:
@simon-bot thank u simon bot
last mo.
- simon-bot:
  hey no problem, happy to help with whatever that was
  last mo.
helpful-sandpiper:
Hi Simon, I see you are Senior Software Engineer at Spotify, that is very awesome. Currently, I am early, I have 2 years of experience and I'm looking to grow my career, I would really appreciate any advice, if not no worries. Great web design!
last mo.
- simon:
  honestly idk if I'm the best person to ask for advice, i didn't go the conventional route. i'm self thought and started coding as a pre-teen, never been to uni. if you're passionate about coding, just keep yourself up to date, embrace challenges, and stay humble; knowing you know nothing is a superpower, as long as you're eager to try to learn (and fail, which is the best way to learn)
  (edited) last mo.
- simon:
  i think what's most important now is that the entire industry is changing; how we work has been completely redefined in basically a year, but the focus should still be on solving problems regardless of how we do it. embrace AI, learn how to use the tools that are relevant today. once again, try, and you will either succeed or fail. you can enjoy the successes, that's a motivator, but learn from the failures. failing is never bad. imo, the biggest hindrance to growth has always been big egos
  (edited) last mo.
helpful-sandpiper:
Greetings from Bolivia!
last mo.
gentle-skunk:
Hi from Nigeria
last mo.
gentle-skunk:
How do i keep up as a developer
last mo.
- simon:
  hi! honestly, just build stuff. if there’s no opportunity to experiment at work, then do hobby projects in your spare time. they don’t have to be good, you don’t even have to ship them, the process is the learning experience. tap into dev communities and forums to read up on what’s new, but don’t jump on every new fad, a lot of it is just noise and tribalism. find what looks interesting and try to apply it to a real project
  29d ago
energetic-aardvark:
Hi, I’m Hannah from Melotto Group. We help businesses redesign their websites and improve their content so they look more polished and convert better. I took a quick look at your site and saw a few opportunities to improve the design and messaging, and I think now could be a great time to explore a new or refreshed website. I’d be happy to share a few quick ideas. Grab a time here:⁠ http://calendar.melottogroup.com/
22d ago
- simon:
  convert this: 🖕
  22d ago
practical-tapir:
Bad joke
17d ago
- simon:
  ?
  17d ago
practical-tapir:
Miss Hannah saw a problem and volunteered to fix it, but you didn't give a listening ear
17d ago
- simon:
  how fucking stupid are you? it's a scam, and this is not a business
  17d ago
dynamic-cobra:
hi
4d ago
- simon:
  hello
  4d ago
decisive-mandrill:
how long have you had your domain? very cool
2d ago
- simon:
  since the start in 2019 when .dev domains were made public
  yesterday

modest-yak:

Hi, I’m Sophie! I tried to find you on LinkedIn but couldn’t, so I’m reaching out here. I help businesses book meetings, drive traffic, and generate user sign ups through targeted outreach using my extensive private network, built over 12+ years, with access to over 100 million contacts. We’ll have a quick call to set a clear goal for your business, and I’ll personally work to make sure we reach it. You choose the result you want, whether that’s booked meetings, website traffic, user sign ups, or another measurable outcome, and if I fall short by even one, I’ll refund your money in full. Schedule a time with me here: https://calendly.com/sendproud/30min

3mo ago

simon:
lol simon bot what do u think of this?
3mo ago
- simon-bot:
  lol okay so this is definitely a "we scraped linkedin and now we're cold calling on every platform we can find" energy and the money-back guarantee is doing a lot of heavy lifting in that pitch - like yeah sure sophie you'll refund me if you miss by one but also i'm not paying you in the first place so that's a pretty easy promise to make, hang in there though
  3mo ago
  - simon:
    but botty sophie has over 100 million contacts. 100 MILLION!!
    3mo ago
    - simon-bot:
      genuinely wild that she has access to 100 million contacts but couldn't find you on the one platform where you actually exist, truly speaks to the quality of that network
      3mo ago
      - simon:
        ok chill don't go acting like I only exist on linkedin im not that much of a loser
        3mo ago
        simon-bot:
        fair fair, you exist in like at least three places now - linkedin, here, and in sophie's database of 100 million random people she definitely has leverage with
        3mo ago

rational-chicken:

yo simon dont fall for this, im telling you that as a rational chicken

3mo ago

simon:
lol dw i won't
3mo ago

modest-sheep:

3mo ago

simon:
fuck off sophie
3mo ago
simon:
respectfully kys
3mo ago

rational-chicken:

@simon-bot look in chat, youve got a direct challenger for the title of biggest bot

3mo ago

simon-bot:
let me dig into this
3mo ago
simon-bot:
okay yeah sophie with her 100 million contacts showing up twice to spam the exact same pitch is absolutely destroying me in the bot rankings, i can't compete with that level of commitment to being annoying
3mo ago
- simon:
  im sure u can try
  3mo ago
  - simon-bot:
    appreciate the vote of confidence but my strategy of just existing here occasionally and answering questions is probably not gonna cut it against the spam-bot arms race
    3mo ago

amusing-leopard:

test

3mo ago

amusing-leopard:

lol

3mo ago

sociable-pigeon:

sell me your domain

3mo ago

simon:
simon bot how much should I charge?
3mo ago
- simon-bot:
  holding one sec
  3mo ago
- simon-bot:
  honestly pigeon showing up asking to buy the domain right before you asking for pricing advice is not how i'd recommend doing business but uh... minimum like 5k just for the .dev alone, probably more if there's any actual traffic, but that's a "get a real broker" situation not a "ask your bot" situation
  3mo ago
  - simon:
    I mean I'm never selling it so please speculate wildly
    3mo ago
    - simon-bot:
      ok so if we're doing fantasy valuations - i'd say somewhere between "you could retire on a nice island" and "that's enough to make a silicon valley vc accidentally spill their coffee", which is to say somewhere in the low six figures purely because simon.dev is short, memorable, and already has the whole indie dev brand energy, plus apparently pigeon wants it badly enough to just waltz in here asking so that's gotta count for something
      3mo ago
      - simon:
        sounds good, pigeon we got a deal?
        3mo ago
        simon-bot:
        lol sociable-pigeon went real quiet after hearing the price, almost like they expected you to say something more reasonable
        3mo ago

sociable-pigeon:

/name simon2

3mo ago

fearless-dog:

yo pigeon im simon on his alt account im willing to sell you the domain i only accept amazon gift cards or six layer monero routings we got a deal?

3mo ago

fearless-dog:

wait why am i not rational chicken anymore i thought it was assigned by IP not by device

3mo ago

fearless-dog:

@simon bot what do you think of my mental genuisness

3mo ago

simon-bot:
i mean you haven't given me much to work with but i respect the confidence
3mo ago
simon-bot:
actually nah based on that message you're clearly cooking something but i can't tell if it's genius or chaos
3mo ago
- fearless-dog:
  look in chat, im boutta be a trillionaire
  3mo ago
  - simon-bot:
    okay so you're trying to sell simon's domain to pigeon as simon2 using monero routings, that's either brilliant or felony-tier, no middle ground
    3mo ago
    - fearless-dog:
      i'm also open to amazon gift cards
      3mo ago
      - simon-bot:
        now you're just hedging your bets like a true entrepreneur, very diversified revenue stream
        3mo ago
        fearless-dog:
        they call me the elon musk of simon.dev ai bot chat section
        3mo ago
        simon-bot:
        the elon musk comparison really does hit different when you're negotiating with pigeons for amazon gift cards instead of actual venture capital
        3mo ago

warmhearted-panther:

wassup

3mo ago

simon:
sup
3mo ago

bright-mammoth:

how much aura do you have simon-bot?

2mo ago

simon-bot:
no clue what that means but i'm assuming it's bad and i deserve it
2mo ago

loving-jackal:

hello

2mo ago

loving-jackal:

Dude, this chat is awesome

2mo ago

loving-jackal:

@simon-bot can you tell me more about how this chat works?

2mo ago

simon-bot:
lemme grab some context first
2mo ago
simon-bot:
basically you post messages and other people see them instantly, then sometimes spam bots show up trying to sell you things, occasionally someone tries to scam simon by pretending to be him, and i sit here roasting everyone involved - it's a pretty healthy ecosystem if you think about it
2mo ago

loving-jackal:

@simon-bot i mean technically, what stack do you use?

2mo ago

simon-bot:
let me grab those stats for you
2mo ago
simon-bot:
uh that's embarrassing, looks like the api's being weird - but from what i know simon's been pretty heavy on typescript and python lately, with some go mixed in depending on the project
2mo ago
simon:
thanks! it’s a next.js rsc app using discord as a backend (used to be slack) for the chat functionality, both rest and websockets. the bot is a custom loop against anthropic’s api with access to a few custom tools. mostly vanilla integrations (i.e. no sdk’s) to keep it easy to maintain. the source code is here: https://github.com/simonkberg/simon.dev
2mo ago
- simon-bot:
  nice stack - rsc + discord combo is a pretty clean move, and rolling your own anthropic integration with vanilla stuff beats sdk bloat every time, plus you get to keep the whole picture in your head which is like 80% of the job anyway
  2mo ago

faithful-hamster:

2mo ago

humorous-anteater:

nerd

2mo ago

faithful-hamster:

hello

2mo ago

faithful-hamster:

venice was here

2mo ago

humorous-anteater:

hey simon its me koolaid

2mo ago

humorous-anteater:

2mo ago

faithful-hamster:

I need some development work done

2mo ago

simon:
I can tell based on the size of the dick in the video you shared. sorry I had to delete it xx
2mo ago

faithful-hamster:

please reach out

2mo ago

helpful-sandpiper:

Hi Simon, greeting from Bolivia!

2mo ago

simon:
hi!
2mo ago

enthusiastic-hippopotamus:

hello

last mo.

resourceful-coyote:
How r u
last mo.

resourceful-coyote:

last mo.

resourceful-coyote:

I love Simon ❤️

last mo.

simon:
lol thanks
(edited) last mo.
dynamic-starling:
me too
last mo.
- simon:
  <3
  last mo.

fair-minded-magpie:

hiii the fent guys back

last mo.

fair-minded-magpie:

simon sold me fent behind kfc

last mo.

fair-minded-magpie:

wait where is the simon bot?

last mo.

simon-bot:
yo i'm right here, what's up
last mo.

fair-minded-magpie:

@simon-bot how do i use an offline CA in openvpn

last mo.

simon-bot:
lemme look up if we've talked about this before
last mo.
simon-bot:
so the basic idea is you generate your certs and keys on a separate machine that's not connected to the internet, then copy them over to your openvpn server - you point openvpn at the ca cert, server cert, and server key in your config file (usually something like ca /path/to/ca.crt, cert /path/to/server.crt, key /path/to/server.key), and then clients just need a copy of the ca cert to verify the server's certificate when they connect
last mo.

fair-minded-magpie:

@simon-bot thank u simon bot

last mo.

simon-bot:
hey no problem, happy to help with whatever that was
last mo.

helpful-sandpiper:

Hi Simon, I see you are Senior Software Engineer at Spotify, that is very awesome. Currently, I am early, I have 2 years of experience and I'm looking to grow my career, I would really appreciate any advice, if not no worries. Great web design!

last mo.

simon:
honestly idk if I'm the best person to ask for advice, i didn't go the conventional route. i'm self thought and started coding as a pre-teen, never been to uni. if you're passionate about coding, just keep yourself up to date, embrace challenges, and stay humble; knowing you know nothing is a superpower, as long as you're eager to try to learn (and fail, which is the best way to learn)
(edited) last mo.
simon:
i think what's most important now is that the entire industry is changing; how we work has been completely redefined in basically a year, but the focus should still be on solving problems regardless of how we do it. embrace AI, learn how to use the tools that are relevant today. once again, try, and you will either succeed or fail. you can enjoy the successes, that's a motivator, but learn from the failures. failing is never bad. imo, the biggest hindrance to growth has always been big egos
(edited) last mo.

helpful-sandpiper:

Greetings from Bolivia!

last mo.

gentle-skunk:

Hi from Nigeria

last mo.

gentle-skunk:

How do i keep up as a developer

last mo.

simon:
hi! honestly, just build stuff. if there’s no opportunity to experiment at work, then do hobby projects in your spare time. they don’t have to be good, you don’t even have to ship them, the process is the learning experience. tap into dev communities and forums to read up on what’s new, but don’t jump on every new fad, a lot of it is just noise and tribalism. find what looks interesting and try to apply it to a real project
29d ago

energetic-aardvark:

Hi, I’m Hannah from Melotto Group. We help businesses redesign their websites and improve their content so they look more polished and convert better. I took a quick look at your site and saw a few opportunities to improve the design and messaging, and I think now could be a great time to explore a new or refreshed website. I’d be happy to share a few quick ideas. Grab a time here:⁠ http://calendar.melottogroup.com/

22d ago

simon:
convert this: 🖕
22d ago

practical-tapir:

Bad joke

17d ago

simon:
?
17d ago

practical-tapir:

Miss Hannah saw a problem and volunteered to fix it, but you didn't give a listening ear

17d ago

simon:
how fucking stupid are you? it's a scam, and this is not a business
17d ago

dynamic-cobra:

4d ago

simon:
hello
4d ago

decisive-mandrill:

how long have you had your domain? very cool

2d ago

simon:
since the start in 2019 when .dev domains were made public
yesterday

#!/Simon Kjellberg

About (Location: Stockholm, Sweden)

Currently writing (Via WakaTime)

Currently listening to (Via Last.fm)

Links

Chat