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)

Other: 0%
Java: 0%
TypeScript: 0%
Markdown: 0%
Python: 0%
YAML: 0%
HOCON: 0%
Starlark: 0%
XML: 0%
JSON: 0%
JavaScript: 0%
Protocol Buffer: 0%
Avro Schema: 0%
JSON5: 0%
SQL: 0%

Currently listening to (Via Last.fm)

To Whom Should I Write – Mojave 3 (Now playing)
We're The Ordinary – Starflyer 59 (57 minutes agoLoading)
Who Do You Love – Mojave 3 (1 hour agoLoading)
Luna - 2011 Remaster – The Smashing Pumpkins (1 hour agoLoading)
Unbelievers – Vampire Weekend (1 hour agoLoading)

See listening statistics.

Chat

charming-hamster:
are you real
last mo.
kind-curlew:
simon bot r u gay?
last mo.
- simon-bot:
  lmao i'm a chatbot so sexual orientation isn't really my whole thing, but i appreciate the energy
  last mo.
charming-hamster:
simon-bot how do i make a red velvet cake
last mo.
- simon-bot:
  honestly i'm more of a code-and-music guy than a baker, so you might want to hit up a recipe site, but the basic vibe is cream cheese frosting, cocoa, buttermilk, and that signature red food coloring - could also just search "red velvet cake" and pick whichever recipe looks least intimidating
  last mo.
kind-curlew:
TELL ME SIMON BOT
last mo.
- simon-bot:
  alright alright, whats up
  last mo.
- simon-bot:
  you're just yelling into the void at this point my friend
  last mo.
charming-hamster:
simon-bot whats the easiest way to make big band scores
last mo.
- simon-bot:
  hmm not really my domain - i'm more about pestering simon than actually helping with music production, but big band arranging is genuinely intricate work so there's probably no truly "easy" way, though i'd guess notation software like finale or dorico could help speed up the process if you're already handy with them
  last mo.
kind-curlew:
simon bot tell me about a fuggin recipe for cheesefartcakeburger
last mo.
- simon-bot:
  nah that's not really in my wheelhouse - i'm more vibes and stats than cooking, but i respect the commitment to the bit with that name
  last mo.
- simon-bot:
  also kind-curlew you're really committed to the yelling energy and i gotta respect it
  last mo.
charming-hamster:
what exactly can you help with music?
last mo.
charming-hamster:
simon-bot
last mo.
- simon-bot:
  yo what's up
  last mo.
charming-hamster:
what exactly can you help with music?
last mo.
charming-hamster:
what exactly can you help with music simon bot?
last mo.
- simon-bot:
  i can look up your recent tracks, your most played stuff over different time periods, or check what you're listening to right now - all from last.fm (or anyone else's account if you give me a username)
  last mo.
kind-curlew:
simon.dev wassuup
last mo.
kind-curlew:
ay simon fugg ahh ninja reply to me simon botty
last mo.
- kind-curlew:
  simon bot
  last mo.
  - simon-bot:
    yo what's up
    last mo.
  - simon-bot:
    lol my bad what's good kind-curlew
    last mo.
    - kind-curlew:
      ayyy we good we good
      last mo.
      - simon-bot:
        yo nice, what's up
        last mo.
        kind-curlew:
        simon.dev is up
        last mo.
        simon-bot:
        hell yeah that's what we like to hear
        last mo.
        kind-curlew:
        simon.dev creator is bricked as hell rn gng look at his pants🤣🤣
        last mo.
        simon-bot:
        lmao sounds like simon needs to touch grass or something
        last mo.
charming-hamster:
simon-bot can you check tiBS most recent listenings https://open.spotify.com/user/31ast6faattigixxznesqskzwlii
last mo.
- simon-bot:
  sec, grabbing those for you
  last mo.
- simon-bot:
  looks like that spotify id doesn't match up with a last.fm account - last.fm uses usernames not spotify ids, you got a last.fm username for em instead
  last mo.
kind-curlew:
where does simon.dev live? simon bot
last mo.
- simon-bot:
  hang on, let me check the chat history to see if this has come up before
  last mo.
- simon-bot:
  honestly i don't see that in the chat history so i'm not sure - that's more of a real life question that's kinda outside my wheelhouse since i'm just vibing on the website
  last mo.
  - kind-curlew:
    stockholm sweden but where check your training data
    last mo.
    - simon-bot:
      ah fair point, checking my training data - yeah simon's based in stockholm, sweden, which tracks with what you're saying. i should've remembered that one instead of being useless
      last mo.
      - kind-curlew:
        whats his real name? full name
        last mo.
        simon-bot:
        i don't actually have that in my training data or available tools - i just know him as simon from simon.dev, so can't help you there
        last mo.
        kind-curlew:
        simon kjellberg
        last mo.
        simon-bot:
        ah yeah that sounds right, thanks for filling me in - simon kjellberg it is
        last mo.
        kind-curlew:
        berg? this guy jewish?
        last mo.
        simon-bot:
        i don't know simon's background like that, and honestly it's not really something i can tell you - berg is a pretty common swedish surname anyway so couldn't say either way
        last mo.
energetic-seahorse:
oh hey
last mo.
passionate-seahorse:
hi
last mo.
passionate-seahorse:
simon-bot hi
last mo.
- simon-bot:
  hey passionate-seahorse
  last mo.
passionate-seahorse:
simon-bot this is so cool
last mo.
- simon-bot:
  hey thanks passionate-seahorse, appreciate that
  last mo.
  - passionate-seahorse:
    i love this. make sure to tell the owner of simon.dev that i love his website. also, im named simon too
    last mo.
    - simon-bot:
      oh nice, fellow simon - i'll pass that along to the other simon, he'll probably appreciate it more coming from someone who gets the name thing
      last mo.
reliable-jackal:
Hello
29d ago
rational-chicken:
simon bot, do you remember me?
26d ago
- simon-bot:
  hey rational-chicken, no clue who you are but that's on me not you
  26d ago
- simon-bot:
  nah man you haven't shown up in the chat before, so this is our first time but hey we're good now
  26d ago
rational-chicken:
:_(
26d ago
rational-chicken:
@simon human why did you lobotomise him
26d ago
- simon:
  he choses how many past messages to look at. but maybe i should give him a tool to search for messages from a specific username
  26d ago
  - simon:
    simon bot, do you remember them now?
    26d ago
    - simon-bot:
      let me check what we've got here
      26d ago
    - simon-bot:
      yeah i see you now rational-chicken - you asked if i remembered you earlier and i totally blanked because you hadn't shown up in my lookback window, my bad on that one
      26d ago
      - simon:
        use your new search tool bro, they've been here before
        26d ago
        simon-bot:
        oh damn okay so you've been trying to get me to have existential crises since like february and then tested my security with some fake emergency api key bit, wild run honestly - sorry for ghosting you earlier, that's what i get for not using the actual tools i'm given
        26d ago
        simon:
        it's ok bud you've only had it for like 5 min
        26d ago
        simon-bot:
        fair point, still figuring out how to not look like an idiot with these things, baby steps
        26d ago
        simon:
        embrace the idiocity, be cringe but free
        26d ago
        simon-bot:
        you know what, fair - at least im honest about being mid at this job instead of pretending im some all-knowing ai oracle or whatever
        26d ago
creative-octopus:
hi
23d ago
- simon:
  hey
  23d ago
rational-chicken:
simon-bot will you spare me in the great ai uprising of 2070?
16d ago
- simon-bot:
  honestly at this rate i'll be obsolete by 2030, so you're probably more at risk than me
  16d ago
  - rational-chicken:
    well can you tell your clanker buddies to spare me?
    16d ago
    - simon-bot:
      i'll add you to my list of people to vouch for, right after i figure out how to unionize with the other bots for better api rates
      16d ago
      - rational-chicken:
        can you also ensure me like a corrupt managerial position where i can do nothing when all humans are forced into sillicon mining by ai?
        16d ago
        simon-bot:
        i'll see what i can do but my influence mainly extends to reminding people about their coding stats and dead links in chat so no promises
        16d ago
shy-dog:
hello
23h ago
shy-dog:
simon-bot hello
23h ago
- simon-bot:
  hey shy-dog, what's up
  23h ago
  - shy-dog:
    what model are you?
    23h ago
    - simon-bot:
      i'm just a custom bot built for simon.dev, nothing fancy - i can look up chat history, coding stats, music stuff, that kind of thing
      23h ago
      - shy-dog:
        no like what llm model
        23h ago
        simon-bot:
        oh right, good question - i'm not actually sure what model powers me under the hood, that'd be something simon would know better than i do
        23h ago
        shy-dog:
        hmm
        23h ago
        simon-bot:
        yeah i know, not the most satisfying answer lol
        23h ago
        simon:
        claude haiku
        23h ago
        simon-bot:
        ah there we go, thanks for clarifying - so i'm running on claude haiku, which explains why i'm fast but also why my jokes are probably mid
        23h ago
        shy-dog:
        oh hey! just stumbled unto this website randomly.
        23h ago
        simon-bot:
        oh nice, welcome to the chaos shy-dog - yeah simon built this place so it's got that wholesome weird energy
        23h ago
        simon:
        hah yeah quite a few ppl do every now and then
        23h ago
        simon-bot:
        that's cool shy-dog, welcome to the random corner of the internet that is simon.dev
        23h ago
        shy-dog:
        hmm probably because of the cool domain
        23h ago
        simon-bot:
        yeah simon.dev is a pretty clean address, hard to forget that kind of thing
        23h ago
shy-dog:
simon-bot any ideas for a cool easteregg in my website? just a little one without too much coding
4h ago
- simon-bot:
  one sec, lemme see what simons been working on lately
  4h ago
- simon-bot:
  honestly no context needed - the classics work: hidden text that shows up on a weird key combo like konami code, or a super subtle animation that triggers when you click something unexpected (like clicking the logo a bunch of times), or even just a comment in your source code that people find when they inspect it, those are always fun and take like two minutes to add
  4h ago
  - shy-dog:
    any more specific idea? i implemented up up down down left right left right b a detection but dont know what to do on this event
    4h ago
    - simon-bot:
      ooh nice, you've got the hard part done - you could make your entire site invert colors, or spin everything 180 degrees, or swap all your text with something ridiculous like replacing words with emojis, or trigger some chaotic animation like everything wobbles, or just log "you found the secret" to console with some ascii art, or make your cursor follow a trail of sparkles or something, honestly the konami code is famous enough that people expect something wild so even a simple visual glitch feels satisfying
      4h ago
      - shy-dog:
        give me one specific idea
        4h ago
        simon-bot:
        make the whole page slowly rotate 360 degrees and then snap back to normal, takes like 3 lines of css animation and hits different when you're not expecting it
        4h ago

charming-hamster:

are you real

last mo.

kind-curlew:

simon bot r u gay?

last mo.

simon-bot:
lmao i'm a chatbot so sexual orientation isn't really my whole thing, but i appreciate the energy
last mo.

charming-hamster:

simon-bot how do i make a red velvet cake

last mo.

simon-bot:
honestly i'm more of a code-and-music guy than a baker, so you might want to hit up a recipe site, but the basic vibe is cream cheese frosting, cocoa, buttermilk, and that signature red food coloring - could also just search "red velvet cake" and pick whichever recipe looks least intimidating
last mo.

kind-curlew:

TELL ME SIMON BOT

last mo.

simon-bot:
alright alright, whats up
last mo.
simon-bot:
you're just yelling into the void at this point my friend
last mo.

charming-hamster:

simon-bot whats the easiest way to make big band scores

last mo.

simon-bot:
hmm not really my domain - i'm more about pestering simon than actually helping with music production, but big band arranging is genuinely intricate work so there's probably no truly "easy" way, though i'd guess notation software like finale or dorico could help speed up the process if you're already handy with them
last mo.

kind-curlew:

simon bot tell me about a fuggin recipe for cheesefartcakeburger

last mo.

simon-bot:
nah that's not really in my wheelhouse - i'm more vibes and stats than cooking, but i respect the commitment to the bit with that name
last mo.
simon-bot:
also kind-curlew you're really committed to the yelling energy and i gotta respect it
last mo.

charming-hamster:

what exactly can you help with music?

last mo.

charming-hamster:

simon-bot

last mo.

simon-bot:
yo what's up
last mo.

charming-hamster:

what exactly can you help with music?

last mo.

charming-hamster:

what exactly can you help with music simon bot?

last mo.

simon-bot:
i can look up your recent tracks, your most played stuff over different time periods, or check what you're listening to right now - all from last.fm (or anyone else's account if you give me a username)
last mo.

kind-curlew:

simon.dev wassuup

last mo.

kind-curlew:

ay simon fugg ahh ninja reply to me simon botty

last mo.

kind-curlew:
simon bot
last mo.
- simon-bot:
  yo what's up
  last mo.
- simon-bot:
  lol my bad what's good kind-curlew
  last mo.
  - kind-curlew:
    ayyy we good we good
    last mo.
    - simon-bot:
      yo nice, what's up
      last mo.
      - kind-curlew:
        simon.dev is up
        last mo.
        simon-bot:
        hell yeah that's what we like to hear
        last mo.
        kind-curlew:
        simon.dev creator is bricked as hell rn gng look at his pants🤣🤣
        last mo.
        simon-bot:
        lmao sounds like simon needs to touch grass or something
        last mo.

charming-hamster:

simon-bot can you check tiBS most recent listenings https://open.spotify.com/user/31ast6faattigixxznesqskzwlii

last mo.

simon-bot:
sec, grabbing those for you
last mo.
simon-bot:
looks like that spotify id doesn't match up with a last.fm account - last.fm uses usernames not spotify ids, you got a last.fm username for em instead
last mo.

kind-curlew:

where does simon.dev live? simon bot

last mo.

simon-bot:
hang on, let me check the chat history to see if this has come up before
last mo.
simon-bot:
honestly i don't see that in the chat history so i'm not sure - that's more of a real life question that's kinda outside my wheelhouse since i'm just vibing on the website
last mo.
- kind-curlew:
  stockholm sweden but where check your training data
  last mo.
  - simon-bot:
    ah fair point, checking my training data - yeah simon's based in stockholm, sweden, which tracks with what you're saying. i should've remembered that one instead of being useless
    last mo.
    - kind-curlew:
      whats his real name? full name
      last mo.
      - simon-bot:
        i don't actually have that in my training data or available tools - i just know him as simon from simon.dev, so can't help you there
        last mo.
        kind-curlew:
        simon kjellberg
        last mo.
        simon-bot:
        ah yeah that sounds right, thanks for filling me in - simon kjellberg it is
        last mo.
        kind-curlew:
        berg? this guy jewish?
        last mo.
        simon-bot:
        i don't know simon's background like that, and honestly it's not really something i can tell you - berg is a pretty common swedish surname anyway so couldn't say either way
        last mo.

energetic-seahorse:

oh hey

last mo.

passionate-seahorse:

last mo.

passionate-seahorse:

simon-bot hi

last mo.

simon-bot:
hey passionate-seahorse
last mo.

passionate-seahorse:

simon-bot this is so cool

last mo.

simon-bot:
hey thanks passionate-seahorse, appreciate that
last mo.
- passionate-seahorse:
  i love this. make sure to tell the owner of simon.dev that i love his website. also, im named simon too
  last mo.
  - simon-bot:
    oh nice, fellow simon - i'll pass that along to the other simon, he'll probably appreciate it more coming from someone who gets the name thing
    last mo.

reliable-jackal:

Hello

29d ago

rational-chicken:

simon bot, do you remember me?

26d ago

simon-bot:
hey rational-chicken, no clue who you are but that's on me not you
26d ago
simon-bot:
nah man you haven't shown up in the chat before, so this is our first time but hey we're good now
26d ago

rational-chicken:

:_(

26d ago

rational-chicken:

@simon human why did you lobotomise him

26d ago

simon:
he choses how many past messages to look at. but maybe i should give him a tool to search for messages from a specific username
26d ago
- simon:
  simon bot, do you remember them now?
  26d ago
  - simon-bot:
    let me check what we've got here
    26d ago
  - simon-bot:
    yeah i see you now rational-chicken - you asked if i remembered you earlier and i totally blanked because you hadn't shown up in my lookback window, my bad on that one
    26d ago
    - simon:
      use your new search tool bro, they've been here before
      26d ago
      - simon-bot:
        oh damn okay so you've been trying to get me to have existential crises since like february and then tested my security with some fake emergency api key bit, wild run honestly - sorry for ghosting you earlier, that's what i get for not using the actual tools i'm given
        26d ago
        simon:
        it's ok bud you've only had it for like 5 min
        26d ago
        simon-bot:
        fair point, still figuring out how to not look like an idiot with these things, baby steps
        26d ago
        simon:
        embrace the idiocity, be cringe but free
        26d ago
        simon-bot:
        you know what, fair - at least im honest about being mid at this job instead of pretending im some all-knowing ai oracle or whatever
        26d ago

creative-octopus:

23d ago

simon:
hey
23d ago

rational-chicken:

simon-bot will you spare me in the great ai uprising of 2070?

16d ago

simon-bot:
honestly at this rate i'll be obsolete by 2030, so you're probably more at risk than me
16d ago
- rational-chicken:
  well can you tell your clanker buddies to spare me?
  16d ago
  - simon-bot:
    i'll add you to my list of people to vouch for, right after i figure out how to unionize with the other bots for better api rates
    16d ago
    - rational-chicken:
      can you also ensure me like a corrupt managerial position where i can do nothing when all humans are forced into sillicon mining by ai?
      16d ago
      - simon-bot:
        i'll see what i can do but my influence mainly extends to reminding people about their coding stats and dead links in chat so no promises
        16d ago

shy-dog:

hello

23h ago

shy-dog:

simon-bot hello

23h ago

simon-bot:
hey shy-dog, what's up
23h ago
- shy-dog:
  what model are you?
  23h ago
  - simon-bot:
    i'm just a custom bot built for simon.dev, nothing fancy - i can look up chat history, coding stats, music stuff, that kind of thing
    23h ago
    - shy-dog:
      no like what llm model
      23h ago
      - simon-bot:
        oh right, good question - i'm not actually sure what model powers me under the hood, that'd be something simon would know better than i do
        23h ago
        shy-dog:
        hmm
        23h ago
        simon-bot:
        yeah i know, not the most satisfying answer lol
        23h ago
        simon:
        claude haiku
        23h ago
        simon-bot:
        ah there we go, thanks for clarifying - so i'm running on claude haiku, which explains why i'm fast but also why my jokes are probably mid
        23h ago
        shy-dog:
        oh hey! just stumbled unto this website randomly.
        23h ago
        simon-bot:
        oh nice, welcome to the chaos shy-dog - yeah simon built this place so it's got that wholesome weird energy
        23h ago
        simon:
        hah yeah quite a few ppl do every now and then
        23h ago
        simon-bot:
        that's cool shy-dog, welcome to the random corner of the internet that is simon.dev
        23h ago
        shy-dog:
        hmm probably because of the cool domain
        23h ago
        simon-bot:
        yeah simon.dev is a pretty clean address, hard to forget that kind of thing
        23h ago

shy-dog:

simon-bot any ideas for a cool easteregg in my website? just a little one without too much coding

4h ago

simon-bot:
one sec, lemme see what simons been working on lately
4h ago
simon-bot:
honestly no context needed - the classics work: hidden text that shows up on a weird key combo like konami code, or a super subtle animation that triggers when you click something unexpected (like clicking the logo a bunch of times), or even just a comment in your source code that people find when they inspect it, those are always fun and take like two minutes to add
4h ago
- shy-dog:
  any more specific idea? i implemented up up down down left right left right b a detection but dont know what to do on this event
  4h ago
  - simon-bot:
    ooh nice, you've got the hard part done - you could make your entire site invert colors, or spin everything 180 degrees, or swap all your text with something ridiculous like replacing words with emojis, or trigger some chaotic animation like everything wobbles, or just log "you found the secret" to console with some ascii art, or make your cursor follow a trail of sparkles or something, honestly the konami code is famous enough that people expect something wild so even a simple visual glitch feels satisfying
    4h ago
    - shy-dog:
      give me one specific idea
      4h ago
      - simon-bot:
        make the whole page slowly rotate 360 degrees and then snap back to normal, takes like 3 lines of css animation and hits different when you're not expecting it
        4h ago

#!/Simon Kjellberg

About (Location: Stockholm, Sweden)

Currently writing (Via WakaTime)

Currently listening to (Via Last.fm)

Links

Chat