Developer tools and open source ecosystems. Product @ Apple. @swiftlang.📍 San Francisco
Joined March 2007
- Tweets 642
- Following 654
- Followers 5,064
- Likes 257
34 Photos and videos
Dave Lester retweeted
Jun 4
A unified networking stack for Swift, layered from low-level I/O primitives, through common protocols, to a modern HTTP client and server API. ⚙️ That's what the new Networking workgroup is building. Interested in contributing? Join us: swift.org/blog/announcing-ne…
6
49
279
19,003
May 2
My favorite part of the latest digest? The two Embedded Swift talks it links to. One of them demos Swift on a Game Boy Advance!
May 1
Inside the latest ‘What’s new in Swift’ digest: two talks on Embedded Swift, a guest contribution highlighting a Swift client for Valkey, new packages, and more: swift.org/blog/whats-new-in-…
2
6
1,701
Dave Lester retweeted
Mar 31
Your digest of everything new in Swift has just landed! Read up on the latest release, community projects, evolution proposals, and videos from across the ecosystem: swift.org/blog/whats-new-in-…
1
29
136
12,474
Dave Lester retweeted
Jan 31
🗞️News from Swift: web apps, a new mail stack, 3D printing, embedded Swift updates, and some community events. Read all about it in the latest Swift blog post: swift.org/blog/whats-new-in-…
ALT “After 20 years of shipping web applications, I have never seen fewer crashes and bugs make it to production. Performance has also been excellent, especially after moving our templates to Elementary. Our heaviest pages make it to the browser in less than 100ms.” (Nick Sloan, Studioworks)
5
17
150
13,844
Jan 2
Happy New Year, @SwiftLang crew! So happy to be back, I hope everyone enjoyed some time off.
If you're looking to catch up on Swift news, check out the December digest: swift.org/blog/whats-new-in-… and let me know what you think!
1
90
Dave Lester retweeted
4 Dec 2025
🎉 10 years of open source Swift! A decade ago today, we opened Swift to the world with a simple blog post: swift.org/blog/welcome
What's grown since—thanks to an incredible community of contributors—has been extraordinary. Here's to the next ten years. 🧡
ALT import Foundation let calendar = Calendar.current let openSourceDay = calendar.date(from: DateComponents(year: 2015, month: 12, day: 3))! let anniversary = calendar.date(byAdding: .year, value: 10, to: openSourceDay)! if calendar.isDateInToday(anniversary) { print("10 Years of Swift open source! 🎉") }
10
105
560
91,395
Dave Lester retweeted
9 Nov 2025
Today I played around with Embedded Swift to build a hello world app for the Pebble and was able to run it on my almost 10 year old Pebble Time Round.
2
4
13
1,978
10 Nov 2025
Excited about this release for the #swiftlang and @temporalio communities.
10 Nov 2025
Managing long-running, stateful workflows in Swift just got a whole lot easier. The new Temporal SDK brings first-class support for building reliable, fault-tolerant applications. swift.org/blog/swift-tempora… @temporalio
101
Dave Lester retweeted
5 Nov 2025
Indie developers now have more tools in their toolkit for building with Swift across platforms, thanks to @skiptools. Exciting to see a Swift community member building a business with the open source Swift SDK for Android. skip.tools/blog/skip-fuse-fr… #Android
8
34
236
27,872
Dave Lester retweeted
1 Nov 2025
It's been a busy month for Swift, with lots of project updates to share. Here's a digest of the latest news: swift.org/blog/whats-new-in-…
1
20
186
16,189
Dave Lester retweeted
24 Oct 2025
📣Announcing the first preview releases of Swift for Android, enabling you to build Android business logic with the same Swift that you use for Apple platforms. swift.org/blog/nightly-swift… #Android
79
579
3,195
752,087
Dave Lester retweeted
6 Oct 2025
New tooling for profiling performance-critical services with Swift -- introducing the Swift Profile Recorder. More here: swift.org/blog/swift-profile…
ALT Screenshot of the output of Swift Profile Recorder, running Hummingbird’s hello example visualized in Speedscope.
3
38
204
20,514
Dave Lester retweeted
24 Sep 2025
Ahead of next week's ServerSide.swift conference in London, organizer and Swift server workgroup member @0xTim looks back at the growth of Swift as a platform for building server apps: swift.org/blog/swift-on-the-… @SwiftServerConf
4
29
153
18,264
17 Sep 2025
Two weeks until @SwiftServerConf at The Science Museum in London! A conference all about @SwiftLang on the server. Looking forward to joining in-person and connecting with the community. #swiftlang
1
157
Dave Lester retweeted
16 Sep 2025
Swift 6.2 is here, including so much 🆕🥳:
⏩Approachable concurrency
🦺Opt-in strict memory safety
📦WebAssembly support
🏃Faster build perf for macros
🐞Enhanced async debugging
📚Inline stack-based arrays
🚇Subprocess support
🧪Test result attachments
swift.org/blog/swift-6.2-rel…
6
131
634
49,158
27 Jun 2025
Developing Swift on server? Less than two weeks to submit a talk for @SwiftServerConf, a conference taking place October 2/3 in London, UK that @0xTim is organizing once again this year! CFP closes July 10, 2025 23:59 UTC. papercall.io/serversideswift… #SwiftLang
2
134
23 Jun 2025
Join the @swiftlang server meetup group online in less than an hour. Talks feature embedded Swift and edge AI forums.swift.org/t/meetup-sw… #swiftlang
1
113
Dave Lester retweeted
3 Jun 2025
The story behind the Apple Password Monitoring service, handling multiple billions of requests per day from devices all over the world, which was recently rewritten in Swift: swift.org/blog/swift-at-appl…
ALT In comparison with the previous Java service, the updated backend delivers a 40% increase in performance, along with improved scalability, security, and availability.
7
92
377
39,846
Dave Lester retweeted
26 Sep 2024
Introducing the seamless Java/Swift interop effort!
Offering both:
- generated Swift macro based JNI wrappers
- Project Panama based Swift accessors generated with a jextract-swift tool for high performance use-cases
Early prototype is open source and we’ll share more about our plans and invite folks to collaborate early next week!
github.com/swiftlang/swift-j…
#ServerSideSwift2024
9
97
348
57,225
23 Jul 2024
UC Davis Library is hiring a community manager to support the work of the University of California (UC) Open Source Program Office (OSPO) Network careerspub.universityofcalif… #ospo
1
269