blog/twie_2025_12_19 (#1265)

Co-authored-by: Mirela Prifti <57798527+mirelaprifti@users.noreply.github.com>

Author: DadeSko

content/src/content/docs/blog/this-week-in-effect/2025/12/19.mdx

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+---
+pagefind: false
+title: This Week in Effect - 2025-12-19
+excerpt: Cause & Effect 7 with Adam Rankin, CTO at Warp. Effect Office Hours 10. justfuckinguseeffect.dev.
+date: 2025-12-19
+authors:
+  - davide_scognamiglio
+  - mirela_prifti
+  - michael_arnaldi
+tags:
+  - This Week In Effect
+---
+
+import { YouTube } from "@astro-community/astro-embed-youtube"
+import Tweet from "astro-tweet"
+import TwitchPlayerNonInteractive from "@/components/TwitchPlayerNonInteractive.astro"
+
+Hi Effecters!
+
+Welcome back to This Week In Effect (**TWIE**) - your weekly update of the latest developments in the Effect community and ecosystem.
+
+Effect is a powerful TypeScript library that helps developers build complex, synchronous, and asynchronous programs. One key feature that sets Effect apart is how it leverages structured concurrency to provide features such as async cancellation and safe resource management, making it easier to build robust, scalable, and efficient programs.
+
+To get started, below you’ll find links to our documentation as well as our guide for installing Effect. Enjoy!
+
+- [Effect Documentation](/docs/getting-started/introduction/)
+- [Installing Effect](/docs/getting-started/installation/)
+
+
+**Recent major updates:**
+
+- [Effect 3.19](https://effect.website/blog/releases/effect/319) Release.
+- [Effect AI SDK](https://github.com/Effect-TS/effect/releases/tag/%40effect%2Fai%400.27.0) Release.
+- Durable workflows in TypeScript with [`@effect/workflow`](https://github.com/Effect-TS/effect/blob/main/packages/workflow/README.md) - currently in alpha.
+- The [Effect community](https://discord.gg/effect-ts) on Discord reached 5890+ members!
+
+ 
+
+## Technology
+
+Another sneak peek of an upcoming Schema V4 feature from Giulio Canti: **sending a subset of Schemas over the wire and restoring it**.
+  <Tweet id="2000622553715663314" />
+
+Here are all the technical changes from the past week.
+
+### Effect Core
+- [Fix: do not use performance.now if it's not available](https://github.com/Effect-TS/effect/pull/5897) (Bug Fix)
+- [Add typeConstructor annotation for Schema](https://github.com/Effect-TS/effect/pull/5910) (Feature)
+- [Add test for ensuring typeConstructor is attached](https://github.com/Effect-TS/effect/pull/5911) (Bug Fix)
+- [Fix(effect): respect times: 0 in Effect.retry options](https://github.com/Effect-TS/effect/pull/5924) (Bug Fix)
+- [Add type-level utils to asserting layer types](https://github.com/Effect-TS/effect/pull/5920) (Feature, next-minor)
+
+### Effect CLI
+- [Handle executable paths with spaces in CLI arguments](https://github.com/Effect-TS/effect/pull/5853) (Bug Fix  )
+
+### Effect Opentelemetry
+- [Fix Tracer.currentOtelSpan to work with OTLP module](https://github.com/Effect-TS/effect/pull/5890) (Bug Fix)
+
+### Effect Platform
+- [Add HttpApp.fromWebHandler](https://github.com/Effect-TS/effect/pull/5902) (Feature)
+- [Support non-errors in HttpClient.retryTransient](https://github.com/Effect-TS/effect/pull/5917) (Feature)
+
+&nbsp;
+## Cause & Effect Podcast | Episode #7
+
+**Reliable Payroll Systems in TypeScript with Effect**
+
+In this episode, Johannes Schickling talks with Adam Rankin, CTO at [Warp](https://www.joinwarp.com/), about using Effect to bring structure and composability to a growing TypeScript codebase, enabling a small, fast-moving team to stay productive while shipping reliable payment & payroll systems.
+
+<YouTube
+  id="https://www.youtube.com/embed/zxCR6rG4snY?si=E4KoHi_G7RkyusNL"
+  title="Reliable Payroll Systems in TypeScript with Effect | Adam Rankin | Cause & Effect 7"
+/>
+
+Cause & Effect features stories from software engineers and companies that use Effect in production. Each episode explores their journey of adopting Effect, including the learning process, challenges faced, and benefits of integrating Effect into their tech stack.
+
+The Cause & Effect podcast is hosted by Johannes Schickling and available on [YouTube](https://www.youtube.com/@effect-ts), [X(Twitter)](https://x.com/EffectTS_/status/2000913813756100778), and audio platforms like [Spotify](https://open.spotify.com/episode/3zMxvB8KVzcBwFarOuxZCb) and [Apple Podcast](https://podcasts.apple.com/it/podcast/reliable-payroll-systems-in-typescript-with-effect-7/id1781879869?i=1000741526055&l=en-GB).
+
+&nbsp;
+
+## Community Events
+
+This week, we wrapped up our final meetup of the year in Vienna, featuring talks by [Mattia Manzati](https://x.com/MattiaManzati) and [Sebastian Lorenz](https://x.com/thefubhy) on error handling and using Effect on the frontend.
+
+To stay updated about future events, visit our [Effect Community Events calendar](https://luma.com/effect-community) and subscribe for updates.
+
+&nbsp;
+
+## Community Highlights
+
+- Watch out for an invitation email from Kit Langton to access the [Effect Institute](https://www.effect.institute/chapters) lessons. If you haven’t signed up yet, make sure to do so at the [Effect Institute](https://www.effect.institute/chapters) website.
+  <Tweet id="2000231110056591739" />
+
+&nbsp;
+
+- [tg-bot-client](https://github.com/effect-ak/tg-bot-client) a Telegram Bot API client with a peer dependency on Effect. Project by [kondaurovDev](https://github.com/kondaurovDev).
+
+&nbsp;
+
+- [StudioCMS](https://studiocms.dev/) released the [StudioCMS Beta.31: From Drizzle to Kysely](https://studiocms.dev/blog/beta-31-release) update. Powered by Effect.
+
+&nbsp;
+
+- [`fx-fetch`](https://github.com/adamjosefus/fx-fetch) a production-ready solution for safe & simple HTTP fetching built with Effect. Project by [Adam Josefus](https://github.com/adamjosefus)
+
+&nbsp;
+
+- We 🤍 [Sam Goodwin](https://x.com/samgoodwin89).
+  <Tweet id="2001602798086246506" />
+
+&nbsp;
+
+- Last but not least: https://justfuckinguseeffect.dev/
+  <Tweet id="2001964779054026791" />
+
+
+&nbsp;
+## Effect Content Update
+
+ - The 10th episode of **Effect Office Hours** went live on Wednesday! We will publish an edited version on our YouTube channel soon. In the meantime, you can watch the [livestream on X(Twitter)](https://x.com/EffectTS_/status/2001306681670860828)
+
+- Maxwell Brown and Tim Smart were live on X and Twitch with *ChEffect*.
+
+   <Tweet id="2001414603943919929" />
+
+&nbsp;
+## Effect Job Opportunities
+
+More and more companies are adopting Effect in their projects. Here’s a list of companies looking for software engineers with Effect experience:
+
+- **14.ai**: [Founding engineer](https://14.ai/careers)
+
+- **Betalyra**, an AI consulting company from Portugal, is looking for a part-time freelance software engineer (TypeScript/Effect) with AI experience – see the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1362610725931061258).
+
+- **coteach.ai** is looking for a Software Engineer – see the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1394724166309253290) and DM *Peter Edmonds* for further info.
+
+- **Embedded Insurance** is hiring for a [Senior Software Engineering](https://embeddedinsurance.bamboohr.com/careers/23) position.
+
+- **Expand.ai**: [Founding Engineer](https://www.expand.ai/careers/founding-engineer)
+
+- **Freckle.io** is hiring [Platform Engineers](https://x.com/code_typist/status/1930326662677434561) with experience in Effect.
+
+- **Gale**: [SWE Intern - Remote (CAN/US)](https://forms.galevisa.com/r/m6gr7e)
+
+- **Glide**: [Senior Frontend Product Engineer](https://www.glideapps.com/jobs/frontend-product-engineer)
+
+- **Globe Commerce**: [Founding Product Engineer](https://www.linkedin.com/jobs/view/4264203054)
+
+- **Goblins** is looking for a Product Founding Engineer. See the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1439740311277404231).
+
+- **Heartbeat**: [Senior Software Engineer](https://jobs.heartbeat.chat/35182) 
+
+- **Inato**: [Product Engineers / Fullstack Engineers](https://jobs.lever.co/inato/6df2d1e3-ce0a-487b-a930-840759803d44)
+
+- **Interfere**: [Founding Product Engineer](https://interfere.com/careers/founding-product-engineer-43d5f5aa-1887-4c7d-a8b2-2017169911fd/apply) and [Founding AI Engineer](https://interfere.com/careers/founding-ai-engineer-003772a3-6bcf-4f57-8c3c-5d840117b5e9/apply) 
+
+- **Introw**: [Staff Software Engineer](https://join.com/companies/introw/14395111-staff-software-engineer)
+
+- **Magentus**: [GenAI Solutions Engineer](https://www.magentus.com/career/genai-solutions-engineer/?r=a)
+
+- **ManageSpace** is looking for a Senior Developer to mentor other developers and migrate to Effect – see the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1389557459949060098).
+
+- **Margins**: [Product Engineer](https://margins.app/jobs/product-engineer)
+
+- **Medbill.ai**: [Founding Software Engineers (full-stack and backend)](https://www.linkedin.com/posts/codingtom_medbill-ai-activity-7260092522708762624-N7TH)
+
+- **Microsub**: [TS Developer](https://x.com/0xdownshift/status/1880013835878154510)
+
+- **Oneiro Solutions**: Software Engineer - Core Team. [Join Effect Discord](https://discord.com/channels/795981131316985866/796153351372275743) and DM *leighman* for further info.
+
+- **PhosPhor** is [hiring engineers](https://phosphor.co/) experienced in Effect. You may also reach out to the Phosphor team on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1418407399139578067).
+
+- **Platonic Systems**: [Remote Effect Engineers](https://twitter.com/platonicsystems/status/1861470819861311945)
+
+- **[Precurion](https://precurion.com/)** looking for a remote‑first Founding Engineer with Effect experience – See the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1362610725931061258).
+
+- **Ressio**: [Senior full stack Engineer](https://crocus-hardhat-6f7.notion.site/Senior-full-stack-engineer-back-end-leaning-28ce06d15219800eb2bcca558d9f0446)
+
+- **Samsung Food**: [Full Stack Developer](https://whisk.bamboohr.com/careers/110)
+
+- **Sellhub** is looking for a Backend Engineer. See the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1423684096428736652).
+
+- **Software Intelligence Works**: [Senior Full-Stack Engineer](https://remotive.com/remote-jobs/software-dev/senior-full-stack-engineer-2011648)
+
+- **spring.new**, Anthropic's flagship customer, is hiring engineers experienced in Effect. See the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1405134163287343196).
+
+- **Supermemory**: [Founding Backend / Infrastructure Engineer](https://x.com/i/jobs/1928194391946186862)
+
+- **Superwall**: [Full-stack Mobile Developer](https://x.com/jakemor/status/1972770955500876070)
+
+- **Tranched**: [Full-stack Engineer Web3](https://tranched.fi/careers/fullstack-developer-web3)
+
+- **Vitalize Care** is hiring a full-stack engineer with Effect experience: [Full-Stack Engineer](https://jobs.ashbyhq.com/vitalize/d907ba5f-0f2f-4bb4-931a-1680d6daf81a)
+
+- **VST**: [Senior Full Stack Software Engineer](https://www.linkedin.com/jobs/view/3854111540/)
+
+- **Wander** is hiring [Software Developers](https://ship.wander.com) with experience in Effect.
+
+- **Warp** is hiring a [Product Engineer](https://www.joinwarp.com/careers/roles?ashby_jid=655962db-5fbe-40cc-a072-9522295b3cbc)
+
+- **French-speaking** startup team led by Stephan Le Dorze is looking for a freelancer to join them - [see his LinkedIn post](https://www.linkedin.com/posts/stephaneledorze_recherche-senior-typescript-developer-activity-7384894173604265984-btNb) for more details.
+
+- Job opening for [Japanese-speaking developers](https://note.com/luma/n/n679d4dcdb363)
+
+- **Small SaaS team** is looking for a part-time Effect Developer to implement Effect in their stack. The job posting is available in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1397684638834491412), DM *jonpage* for further info.
+
+- **Stealth team** looking for a software engineer with Effect experience – see the job posting in the `#job-board` channel on [our Discord](https://discord.com/channels/795981131316985866/796153351372275743/1362610725931061258).
+
+- **Stealth team** that has already scaled their product to 50K daily active users in the last year, is looking for [Effect Developers](https://x.com/wireless_dev/status/1930314012723687739). DM [wireless](https://x.com/wireless_dev) on X for more info.
+
+
+_Disclaimer: Please note that these job postings are shared for informational purposes, and we encourage applicants to verify details directly with the hiring companies._
+
+
+&nbsp;
+## Effect Merch Store
+
+The [Effect Merch Store](https://effect.website/merch) offers a selection of Effect-branded items designed for the community. All orders are processed and fully managed through [Printful](https://www.printful.com/).
+
+<Tweet id="1868605126862385238" />
+
+
+&nbsp;
+## Closing Notes
+
+That's all for this week. Thank you for being a vital part of our community. Your feedback is highly valued as we fine-tune this format. Feel free to share your thoughts, and we'll do our best to tailor it to the needs of our community.
+
+_Effect Community Team_