Ask HN: Who is hiring? (March 2026)

Bubblehouse is a fast-growing custom loyalty platform, tripling the revenue each year. Headquartered in NYC, the entire team is fully remote and spread across the globe. We power loyalty programs for brands like American Girl and Old Spice.

We’re expanding our lean team of extremely experienced developers. Companies are switching from other platforms thanks to the customizations and flexibility that we offer, enabled by our pace and technical excellence, which we intend to keep for years to come.

We run on Golang and use custom data storage on top of local key-value stores, colocating the storage and compute on dedicated hardware servers, and reading data directly from mmap’ed pages of the database. Ever came across HN saying that one can run Twitter on a single machine these days? We’re doing that in production.

Zero lines of React, almost zero third-party dependencies (carefully vetted), every line of JavaScript manually written with respect and understanding of the web platform. We render HTML server-side like it’s 2005.

Looking for:

1. Top to bottom understanding of the software stack, from the modern-ish web platform to CPU caches.

2. Thinking and problem solving outside the box. (We don’t _always_ go for unconventional solutions, but we do it often enough to require a person who can do justice considering the entire problem space at every step.)

3. Demonstrated ability and hunger to learn new things quickly. (Every month we’re doing things we have never done before.)

4. Broad experience across multiple programming paradigms, platforms and software stacks.

5. Demonstrated care for the software craftsmanship (which can take many forms).

6. Great spoken English, and ability to communicate 9am to noon in New York time zone.

We give you a literally fast-paced environment (with features delivered in days) where you need to solve very challenging problems with practical advanced technology, take on entrenched market leaders, and help entrepreneurs across small and large businesses delight their fans.

Send a plain text cover letter to andrey+hiring@bubblehouse.com. Help us see how you stand out. Summarize your experience. Link to 1–5 impressive things you’ve built and proud of, link to where we can see some of your code, include your portfolio/CV, describe the platforms and stacks you’re an expert in. How did you start programming? What are you most passionate about in technology? What are the most interesting or weird things you’ve done? What are your strongest held professional opinions? Please make your email easy to read, we’ll appreciate that.

(If you have applied before, no need to re-apply, we’ll reach out.)

We are building mobile products with a small, fast team and want a Flutter developer who is unusually strong at directing AI-driven software delivery. This is not a traditional "write the code yourself" role. We want someone who can decompose product and technical work clearly, set up coding agents and containerized environments so they can run independently, let them execute with very wide autonomy, and then use AI again to review, challenge, and validate the resulting commits. The standard here is technical excellence without manual coding as the primary lever. 100x engineering is the norm.

You might be a fit if you:

- are deeply experienced with Flutter and mobile product development

- are comfortable leveraging AI agents to plan, implement, test, and commit code with minimal guardrails

- can use AI-based review workflows to inspect commits, spot regressions, and maintain quality without doing line-by-line manual coding yourself

- have strong product and engineering judgment, and can tell when an AI-generated solution is structurally right vs. superficially plausible

- own and regularly use both a physical Android device and a physical iPhone/iPad for live app testing

- are familiar with provisioning, signing, installing, debugging, and validating Flutter apps on real devices, not just simulators

We care a lot about velocity, correctness, and taste. We are specifically looking for someone who can treat AI as the execution layer while still owning architecture, quality, release readiness, and real-device validation.

You can find us at: flutterdev@pindush.net (Burner for spam prevention. Will answer from different address)

We're an AI platform for protein engineering (customers include Novo Nordisk, J&J, Grifols). We run our own wet lab in Amsterdam to generate training data for our ML models and to build the automation playbook we share openly with the field. We're hiring a software engineer to work embedded with our bioengineering team. You'd build things like: computer vision pipelines for colony picking, interfaces for lab automation workcells, integrations between lab instruments and Benchling. Python, APIs, databases, some frontend.

No PhD or biotech background needed. You'll pick up the biology. We care about solid engineering skills and curiosity about working at the intersection of software and hardware.

Apply: https://jobs.ashbyhq.com/cradlebio/7a4f7d2d-714e-4c01-84bb-9...

- Radar is the geo-location dev tool

- Doing 1B+ API calls per day

- Our main languages are Rust and TypeScript, we also use mobile and offline pipeline languages (Python, Scala, and Terraform).

- We're based in NYC with our HQ in Union Square and remote friendly (US)

Interesting things we're working on:

- HorizonDB, our Geospatial database written in Rust

- Precise indoor location more accurate than iOS and Android leveraging Ultra-Wideband, other mobile sensors and ML.

- Extracting raw map data from satellite maps and the web leveraging ML and AI

- Anomaly detection to identify spoofed locations

- Mobile infrastructure that automatically configures itself optimizing battery-life and location accuracy for different use-cases over time

- Multi-Region AWS K8s deployment, 99.99%+ availability

- Frontend tools to visualize and debug location data at scale

Check out our jobs page here: https://radar.com/jobs#jobs If you have any questions, feel free to reply here or you can e-mail me at tim@radar.com