@EffectTS_ LSP version has new kind of layer graph... The Layer Outline Graph! Rather than HOW you built the layer, it focuses on the building blocks, and their RELATIONSHIPS. You can then decide how to manually arrange your layer composition!
This Week in Effect - 2025-10-31
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 create 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!
Recent major updates:
- Effect 3.18 Release.
- Effect AI SDK Release.
- Durable workflows in TypeScript with
@effect/workflow- currently in alpha. - The Effect community on Discord reached 5510+ members!
Effect LSP 0.49 has been released and includes the Layer Outline Graph!
Here are all the technical changes from the past week.
- Remove some leftover gen adapters (Refactor)
- Fix Graph.neighbors for undirected graphs (Bug Fix)
- Add jsonSchema2020-12 target and fix tuple output (Bug Fix)
- Backport graph module changes (Feature, next-minor)
- Remove some leftover gen adapters (Refactor)
- README.md for HttpApiEndpoint: clarify header schema usage and add note on header normalization (Documentation Update)
- Support config.url in MysqlMigrator (Improvement)
- Last week’s teej dv’s stream with Kit Langton is now on YouTube.
Play
- teej dv also live-streamed some Effect coding with Dillon Mulroy.
- Effect: the Good Parts,
use workflow, and Vercel Domains - a very interesting conversation between Dillon Mulroy and Swyx.Play
- Vercel shipped the Domains MCP in 1 day using the MCP from Effect/ai!
Replying to @MichaelArnaldi We shipped the domains MCP using the MCP from Effect/ai, was pretty magical how it just fit into our existing Effect http setup for the routing x.com/rhyssullivan/s…
Introducing the Vercel Domains MCP Our instant search, now available to your agent No auth required, just add the url and you're good to go
- Dillon Mulroy livestreamed his new series Building a family recipe app with LiveStore, Effect, and CF Workers.
- Effect UI - a reactive DOM rendering library built on Effect that enables declarative UI with streams and automatic updates. Project by Stef van Wijchen.
- effect-json – a type-safe, schema-driven JSON serialization for TypeScript and Effect. Project by Paul Philp.
- Effect Query - an integration of Effect with Tanstack Query, fully type-safe and compatible with Effect RPC and Effect HttpApi, by Dominik Vít has been released.
- Appreciation post by Tanner Scadden from Vitalize Care - currently looking for a full-stack engineer with Effect experience.
@EffectTS_ is the most impressive technology I’ve gotten to work with. The type system, language extension, fibers, errors, dependency injection, clusters/workflows, etc. It’s nice reaching for one tool instead of multiple. Excited for 4.0 and APIs to be standardized!
- Results from Johannes Schickling’s poll about Effect.
Poll time: How do you feel about @EffectTS_?
- An extract from Sebastian Lorenz’s talk at the TypeScript Munich Meetup.
LLMs 🤍 Effect Groundbreaking stuff from @thefubhy's TypeScript Munich Meetup talk. Watch from 00:47
- A reminder that the Effect NYC Meetup is happening on Nov 19. Be sure to register for the event and subscribe to Effect Community Events calendar to stay on track with upcoming events.
Effect is heading to NYC! 🗽 Join us on Nov 19 at @joinwarp's office for an evening of talks, discussions & networking. RSVP below: luma.com/ihoo6kxy
- The sixth 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) below.
Effect Office Hours x.com/i/broadcasts/1…
- The second talk and the Panel discussion from the Effect Milan Meetup 2025 are now on YouTube.
🔥 Office Hours 5: Layers, Dependency Injection, Accessors, and Scopes in Effect is now on our YouTube Channel.
Don’t forget to listen to our Cause & Effect podcast hosted by Johannes Schickling and available on YouTube, X(Twitter), and audio platforms like Spotify and Apple Podcast.
This podcast highlights stories from software engineers and companies using Effect in production. Each episode explores their journey of adopting Effect, including the learning process, challenges faced, and the benefits of integrating Effect into their tech stack.
We’ve published our fifth episode with Samuel Briole, CTO of Spiko, a Paris-based FinTech startup building infrastructure for issuing regulated financial products on public blockchains, specifically risk-free products.
Spiko utilizes Effect extensively from day one, for both backend and frontend development, particularly for managing asynchronous operations, API integrations, and smart contracts.
More and more companies are adopting Effect in their projects. Here’s a list of companies looking for software engineers with Effect experience:
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Expand.ai: Founding Engineer
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Platonic Systems: Remote Effect Engineers
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Medbill.ai: Founding Software Engineers (full-stack and backend)
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Oneiro Solutions: Software Engineer - Core Team. Join Effect Discord and DM leighman for further info.
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Microsub: TS Developer
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Samsung Food: Full Stack Developer
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Margins: Product Engineer
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Precurion looking for a remote‑first Founding Engineer with Effect experience – See the job posting in the
#job-boardchannel on our Discord. -
Vitalize Care is hiring a full-stack engineer with Effect experience: Full-Stack Engineer
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Embedded Insurance is hiring for a Senior Software Engineering position.
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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-boardchannel on our Discord. -
Software Intelligence Works: Senior Full-Stack Engineer
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14.ai: Founding engineer
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Wander is hiring Software Developers with experience in Effect.
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Supermemory: Founding Backend / Infrastructure Engineer
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Ressio: Senior full stack Engineer
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Stealth team looking for a software engineer with Effect experience – see the job posting in the
#job-boardchannel on our Discord. -
A French-speaking startup team led by Stephan Le Dorze is looking for a freelancer to join them - see his LinkedIn post for more details.
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Freckle.io is hiring Platform Engineers with experience in Effect.
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A stealth team that has already scaled their product to 50K daily active users in the last year, is looking for Effect Developers. DM wireless on X for more info.
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Job opening for Japanese-speaking developers
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Globe Commerce: Founding Product Engineer
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Introw: Staff Software Engineer
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Heartbeat: Senior Software Engineer
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Superwall: Full-stack Mobile Developer
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spring.new, Anthropic’s flagship customer, is hiring engineers experienced in Effect. See the job posting in the
#job-boardchannel on our Discord. -
ManageSpace is looking for a Senior Developer to mentor other developers and migrate to Effect – see the job posting in the
#job-boardchannel on our Discord. -
coteach.ai is looking for a Software Engineer – see the job posting in the
#job-boardchannel on our Discord and DM Peter Edmonds for further info. -
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-boardchannel on our Discord, DM jonpage for further info. -
PhosPhor is hiring engineers experienced in Effect. You may also reach out to the Phosphor team on our Discord.
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Warp is hiring a Product Engineer
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Sellhub is looking for a Backend Engineer. See the job posting in the
#job-boardchannel on our Discord.
Disclaimer: Please note that these job postings are shared for informational purposes, and we encourage applicants to verify details directly with the hiring companies.
The Effect Merch Store offers a selection of Effect-branded items designed for the community. All orders are processed and fully managed through Printful.
Effect Merch is here! We’re excited to announce the launch of our Effect merch page! Grab your favorite swag & show your love for Effect in style! 🧢 effect.website/merch
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