Đan Coffman 🏴🛡
@dan_coff
Followers
2,299
Following
2,742
Media
380
Statuses
4,302
ex- @Coinbase | Software Ξxpert
Seattle, WA
Joined November 2010
Don't wanna be here?
Send us removal request.
Explore trending content on Musk Viewer
Southport
• 931835 Tweets
Iran
• 512486 Tweets
ايران
• 389263 Tweets
اسرائيل
• 286217 Tweets
#اسماعيل_هنيه
• 247540 Tweets
Tehran
• 199714 Tweets
Şehit
• 134274 Tweets
طهران
• 99576 Tweets
#Hamas
• 89213 Tweets
Southend
• 78409 Tweets
Leeds
• 69585 Tweets
マギレコ
• 57170 Tweets
スペースマウンテン
• 52317 Tweets
#ismailhaniye
• 40999 Tweets
ابو العبد
• 34474 Tweets
İsrail
• 31618 Tweets
Onyeka Onwenu
• 26977 Tweets
احمد ياسين
• 25198 Tweets
#GencoErkal
• 24291 Tweets
KerjaPRABOWO FokusSERIUS
• 20277 Tweets
AKUkamu KITAjuaranya
• 19561 Tweets
スタリラ
• 17303 Tweets
#gangłysego
• 17011 Tweets
Polônia
• 16598 Tweets
Lakshya Sen
• 13084 Tweets
ダンプラ
• 12896 Tweets
Cassandre Beaugrand
• 12052 Tweets
قاسم سليماني
• 11004 Tweets
Nazım
• 10421 Tweets
Pinned Tweet
My last day at Coinbase was March 1st. 6 years. When I joined, CB was ~100 people. Amazing company.
40
2
354
A team of ~8 engineers built this app from scratch using React Native in 2020. The only code it uses from the previous native iOS app is the widget.
12
74
569
There was this period in I guess late 2021 where we were kind of puzzled by how well FTX was performing. People were talking shit about the size of CB’s eng org when FTX appeared to be eating our lunch
Caroline Ellison of FTX admits that Sam bribed Chinese officials with $100M to unfreeze their assets, purposely tried to scam Saudi investors in the final days of FTX, intentionally tried to sic regulators on Binance to destroy his competition, and it's only lunchtime.
302
1K
9K
7
16
419
One of the worst ways you can fuck up in programming is to make it hard to figure out "What calls this function?"
Like if you're doing metaprogramming that concats strings to make function names, stop it.
18
32
375
XRP trolls are reporting a script that allows you to filter XRP trolling.
14
30
250
What's up just wanted to let y'all know that I have no ability to read your private text messages and am not working with any government agency to do so.
9
15
158
Coinbase Wallet is going to dominate in 2022. Absolutely crush competitors.
23
5
125
I remain 100% convinced that crypto is the future of finance and Coinbase is the strongest, best-positioned business in crypto.
9
5
107
I think people have trouble getting what
@CoinbaseWallet
’s mobile app is. It’s a web browser inside an app, which lets you use the web UIs of onchain apps, on your phone. It’s the inverse of putting your crypto wallet inside your browser as an extension. Instead you put the
the reason this cycle is different is the crypto apps are immensely easier to use on mobile
i do most of my crypto stuff on my phone and within the last year i’ve been able to accomplish 90% of my onchain activity entirely on mobile with
@CoinbaseWallet
last cycle was more like
12
10
63
25
8
96
People should use Coinbase because we’re a real business run in the US by responsible adults, not a 100x leveraged shitcoin casino run by a poly harem of dipshit philanthropist-larping adderal addict autist children in the Bahamas.
13
4
96
Coinbase <-> Base <-> Ethereum. This triangle is the strongest possible configuration.
5
8
94
@AlpacaAurelius
@primalpoly
Becoming a Supple Leopard is a book about stretching for athletic performance…
4
1
82
Coinbase, after many failures, built a process for handling “incidents” — which are any substantive failure. Usually a software bug that shipped to prod. These are stressful. Many ppl have a default mode of responding to this category of event: assign blame, feel shame, get mad.
7
3
89
I'm trying to be more active on Twitter so that I can "build a personal brand" and then "spam my followers" in order to "hire developers for my team"
4
2
80
BTW Coinbase has like 12 products it's not just the blue app
7
2
76
After a year as a manager, today I return to a primarily technical role. I breathed the deepest sigh of relief as I cancelled all my standing meetings.
4
0
71
Every day I update the Coinbase Wallet internal alpha and see what this amazing team has added or improved. It’s seriously the best.
6
4
66
You can’t be a senior engineer if you’ve never stayed on a team long enough to experience the pain of being fucked by your own past mistakes.
8
2
68
The most exciting businesses in crypto right now are
@BuildOnBase
,
@ourZORA
, and
@farcaster_xyz
. Coinbase operating a chain is an immensely powerful unlock for collabs between CB and chain-native products.
1
2
68
It's time to stop pointless chain proliferation. Coinbase going all-in on Eth+Base with CB Retail and Wallet integrations is the best thing happening in crypto.
One thing
#OnchainSummer
is exposing is just how broken our UX is in the main Coinbase app for NFTs, Dapps, and L2s today. Sorry to say, but true.
If we face truth, we can get motivated to improve it. These need to be first class experiences, and
#OnchainSummer
is a great impetus
522
225
3K
2
5
66
One of the funniest things at Coinbase was when we shipped price alert notifications in the mobile apps and then DDoSed ourselves every time an alert went out. Because everyone would then open the app. Obvious in retrospect.
4
1
66
Coinbase hat, sunglasses, fanny pack, shirt, pants, and socks. 2018 “offsite” in Napa. I was a manager.
12
0
62
I've been doing nothing but research about Ethereum for 3 weeks and I just recently reached the point where I'm confident that I know all the words.
7
0
57
I’m finally to the point where I’m just not going to sell any more ETH or BTC for USD at any price. I don’t care if it goes to zero. I don’t care if BTC goes to a zillion. I’m keeping that portion of my money denominated in crypto.
10
5
52
I wanna talk for a minute about introducing process to solve problems: a characteristic mistake of mid-career tech workers. You see successful people using process to enact outcomes and think that's what one does. It's tempting to propose process. This is the nuclear solution.
1
7
51
I built a weightlifting platform in my garage. It was a lot of work and I'm quite proud how it turned out.
7
0
50
The hierarchical demand for predictability is antithetical to creative exploration, the development of leadership, actual production, collaborative behavior. This is the hardest problem in software.
2
15
45
Incident response process and culture is crucial to get right in a software business, and also something I’ve taken into my personal life. We all have conflict. We all fail. It a going to be scary. You will be tempted to blame someone (maybe yourself). There’s a better way.
0
0
39
One of the most important things you do as an engineering leader is tell people about how long things are going to take to build or fix under different conditions (staffing mainly).
The reason this is important is because businesses need to do planning in batches, because it's
4
1
38
Crypto is a complex thing. Coinbase does such a good job at hiding the complexity that people don’t realize it exists. But sometimes it leaks through, and they rage at us.
6
1
37
After 8 years in SF, I'm moving to Seattle at the end of this month. It's truly an awful time to leave, because I feel like COVID has distanced me from the city in way that makes it all feel depressingly unreal.
2
0
36
@jorilallo
Android is so painful to build for. The devexp feels super musty and apps don't run well. It's easy to see why people who care a lot choose to focus elsewhere. The options as I see them are (1) don't build an Android app, (2) multi-platform, or (3) suffer.
5
1
37
Coinbase engineers please watch this before work tomorrow. Today is gonna be your day. You're gonna keep the API up.
1
1
34
top tips 4 wfh:
1. cancel all meetings
2. wake up whenever
3. never change out of your bathrobe
4. write code from 10pm-4am every night including weekends
0
0
33
My girlfriend has discovered that emailing me at my work email address is the best way to guarantee that I read her message while I'm at work.
2
0
34
@RBC5001
@robtfrank
I moved from CA to WA bringing all my capital with me, and now if I sell it in WA, a state that was in no way involved with generating a single cent of it, they take 7% of my gains.
1
0
30
This year I'm only doing things I actually enjoy (being at home, playing World of Warcraft) instead of things society expects me to enjoy (having friends, going to music festivals).
3
0
30
Understanding the petty defensiveness and territoriality in my own behavior has been the most professional-life advancing change of my career. I can't recommend enough two particular experiences for senior engineers:
2
2
29
@ShakeelHashim
They are correct to resist the state installing monitoring mechanisms in their hardware. Law enforcement will 100% use any "on-chip governance" for dragnet data collection.
3
0
32
This is a big deal.
after 2 years of hard work, blobs are now live on
@base
before: $0.31
after: $0.00 (but actually $0.0005)
wallets need to update to handle these cost reductions!
314
508
3K
0
0
30
Got my VR goggles on. Bloomberg terminal in one eye, Bookmap in the other. I'm ready.
3
0
31
Next crypto bull can’t come until Q3 ‘23 at the earliest. I have a thing I need to ship.
7
0
30
this is sick
Coinbase Wallet now has a simple mode that focuses on payments. For instance, it lets you send USDC on Base free, instantly, globally.
We'll try experimenting with this as the default mode in frontier markets for easier onboarding. People can always flip to advanced when ready.
238
407
2K
1
1
30
1. Have the opportunity to greenfield some business-critical application, and stick around long enough to see the next generation of engineers struggle with the technical mistakes you made.
5
1
27
💙 We have some fire about to drop too. I wish people could see the internal builds. CB Wallet team is executing on another level right now.
@twobitidiot
@CoinbaseWallet
is the best
#web3
wallet, easy to use for newbies, neat UI, super fast to load. Built exactly around end users. Kudos to
@coinbase
for everything they do 👏🏻
3
0
20
3
4
29
Yesterday I mistakenly assigned a Jira issue to another team and one of their engineers actually did it. What should I do?
8
0
29
My new management strategy is leaving people alone so they can do real work.
1
0
27
@drwasho
@VitalikButerin
We thought he was Bill Gates but Vitalik was secretly the Ballmer of crypto this whole time
0
1
28
This is a pretty interesting test for USDC. I'm more curious to see what happens than I am worried. I do have some USDC, on Coinbase, and I'm not going to be doing anything with it.
1
1
27
At my company, we're going to have a bot that detects when dead variant code for an experiment is still present 6 weeks after resolution and automatically fires the PM who ran the experiment.
4
0
26
One thing that surprised me is that changing roles internally can be a traumatic experience. It’s possible to go from total confidence to ineptitude overnight. These people need support equal to new hires. In some ways it’s harder, because everyone accrues reputation.
2
0
25
People won't care about crypto until it makes their lives easier without them having to learn anything.
1
0
25
I’m 80% sure running an experiment for every single feature you ship is a huge waste of time.
2
1
25
I was forced to learn some stuff this week and it made me have to think hard so I hated it
4
1
24
Every so often it’s a good idea to do an aggressively good job at a thing, to prove a point
1
0
24
Programmers love shitting on their predecessors in order to set the stage for some self-congratulatory back-patting in celebration of marginal improvements they've made.
2
0
24
0
0
22
These apps are now available to everyone on both iOS and Android. We support ETH (incl. tokens, NFTs, and L2s), BTC, SOL, and 6 other chains. There's a built-in browser for using dapps. I think it's the best mobile crypto wallet now and we're accelerating in H2 '22. LFG!!!!!!!
We're rolling out the new Coinbase Wallet iOS and Android apps that my team spent the last 7 months planning and building!
15
5
96
4
5
21
There should be an "X under X" for every age. I wanna know who the 3 most influential 3-year-olds are.
1
1
22
EMs: "This was a Herculean feat, great job everyone. Love it!"
PMs: "Stat sig neutral let's ship it."
Engineers: "This was one of the most disastrous failures in the history of computing."
4
0
23
This app is 100% React Native. It's almost all TypeScript and the entire data layer is shared with our Chrome Extension.
2
0
22