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About BloomyBloomy is an AI tutor and curriculum for K-12 students. Our student users are learning approximately 2x faster in early pilots, and students and teachers alike love our product.How it works: We diagnose students’ skill gaps, map out a personalized learning path for them, and then have an AI tutor teach them. The AI learns about how they learn, so it can increase the efficiency of its teaching and, consequently, their learning.How you can help: You will be joining as the founding engineer. Right now, engineering is one founder (me) orchestrating fleets of coding agents that produce a large share of our code and curriculum against specs, verification harnesses, and QA gates. I’m a solo founder with domain expertise as a former teacher and sales leader, but I’m not an engineer by training, and I need someone with true technical expertise to actualize the vision of improving education for millions of students.Why we’re different: Bloomy is AI-native. I built the entire product from February to April of this year, got it into the hands of 500 students across 6 schools from April to June, started YC in June, and have roughly doubled ARR every 2 weeks since then. Thousands of students will soon use our product this fall. Bloomy is also the first EdTech company to go through YC for the past 5 batches, so it represents an opportunity to be on the ground floor of one of relatively few startups trying to transform education with AI.Your first 90 daysFirst weekShip a feature or a fix to production and watch real students in real classrooms hit it the next school day. Our loop from “merged” to “a 6th grader used it” is as short as it gets.First monthGet acquainted with the React&#x2F;TypeScript app, the Supabase backend, the content pipeline, and the agent fleets that feed it. Take ownership of your first fleet — write the spec, build the harness, set the QA gate — and start shipping through it.Three months laterDesign the roadmap with me: ~50% shipping product across the stack, ~25% building and running agent infrastructure, ~25% talking to teachers, students, and districts — and turning what you hear into the roadmap.Things we badly want to build- The data flywheel. Almost nobody in education closes the loop between that telemetry and the instruction itself. We can — for every answer, retry, AI-tutor conversation, and any other interaction — in days, not textbook-revision cycles. Design that loop.- Agent orchestration as a first-class engineering problem. Better harnesses, better evals, better verification — so that a dozen concurrent agents produce work you&#x27;d trust in front of a classroom.- Whatever schools need next. Today it&#x27;s tools for students and teachers. The surface area in a school district is enormous, and you&#x27;ll help decide where we go.We&#x27;re looking for someone who- Has 5+ years shipping products that real end users touch daily, and has opinions about what makes them good- Is high-agency: can take ambiguous feedback and turn it into shipped product without waiting for a spec- Is expert-level with AI coding tools and uses them to move dramatically faster — without outsourcing judgment to them- Gets excited, not exhausted, by the idea of managing a dozen concurrent agents- Wants tight feedback loops with real users (some of whom are eleven)- Has high schlep tolerance — roster CSV imports, school-device performance quirks, and school-specific customization are part of the job and part of why we win- Cares about measurable learning outcomes, not just engagement metricsPreferred experience- TypeScript, React, Postgres (we&#x27;re React 18, Vite, Tailwind, shadcn&#x2F;ui, Supabase, TanStack Query, on Vercel)- LLMs in production: agents, evals, tool use, context management- Building codebases and pipelines designed to be worked on by agents- Event telemetry, analytics, or experimentation systems- Edtech background genuinely not requiredThe backstoryI started my career as a 7th grade English teacher, where I saw how hard teaching 30 different kids at 30 different levels of understanding really is. After building the driver acquisition engine at Lyft, pursuing various entrepreneurial ventures while getting my MBA at Stanford, and building AI agents and workflows at McKinsey from the start of the boom, I now believe education is where AI can have the largest positive impact for society.Compensation- $175K - $200K- 1.5 - 2.0% equityFounding-engineer package — meaningful ownership from day one.Sound like you?Email alex@bloomylearning.com. Include something you&#x27;ve built that real people used.

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TrueBiz (YC S22) is an API that tells financial institutions whether a business is real, what it actually does, and whether it’s risky — in seconds.Today, this process is still manual: underwriters spend 20–30 minutes Googling websites, reviews, and social profiles to make a decision. We replace that with an API that analyzes thousands of signals across the internet and returns a decision in ~30 seconds.We’re already live with companies like Visa, Mercury, and Lightspeed, and processing millions of requests as part of critical payment and onboarding flows.We’re a lean, high ownership team that built a profitable, fast growing model that doesn&#x27;t need more VCWe&#x27;re hiring a Senior Engineer to help us scale the system and expand the product.What you’ll work on:* Scaling high-throughput, low-latency systems (AWS ECS&#x2F;Fargate, RDS, async pipelines)
* Designing systems that ingest and reason over messy, real-world web data
* Building product features end-to-end (Python&#x2F;Django + React)
* Improving reliability, observability, and performance for enterprise workloads
* Shaping how AI agents evaluate business risk (not just calling APIs)What we’re looking for:* Strong backend experience (Python&#x2F;Postgres)
* Experience running production systems on AWS
* Comfortable owning systems end-to-end (design → deploy → debug)
* Pragmatic, high-ownership builderRemote (US)More details &#x2F; apply:
<a href="https:&#x2F;&#x2F;www.ycombinator.com&#x2F;companies&#x2F;truebiz&#x2F;jobs&#x2F;XkFCIG0-senior-software-engineer-core-team">https:&#x2F;&#x2F;www.ycombinator.com&#x2F;companies&#x2F;truebiz&#x2F;jobs&#x2F;XkFCIG0-s...</a>

TrueBiz (YC S22) – Senior Software Engineer – Remote (US) – Full-Time

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We are a new robotics company based in Palo Alto, California, building wearable robotic devices.Our first product is a device that reduces the physical cost of carrying heavy loads over distance, allowing people to move farther, carry more, and arrive less fatigued.The company is early but already operating in the field, with hardware on real users and a direct feedback loop in the most demanding conditions imaginable.We are backed by Y Combinator and a group of leading deep-technology investors.We recently moved to the Bay Area to grow the team and are hiring three principal engineers (we&#x27;re in stealth for the time being, but hopefully not for too much longer!).$200-250K + 1-2% equity + full benefits, onsite in Palo Alto.These senior roles each own their domain with full authority, no inherited design decisions, and no one between them and the problem. What you build will go on real users within weeks.- Mechanical (Principal Engineer): own the mechanical platform, including structures, joints, actuator integration, ruggedness, and field serviceability. You have designed hardware for robots, humanoids, or other high-performance actuated systems.- Firmware (Principal Engineer): own the embedded stack, including real-time BLDC motor control, sensor integration (IMUs, encoders, current sensing), OTA, and debug tooling. You have written real-time firmware for physical robots or autonomous systems.- Software (Principal Engineer): own the software infrastructure, including device-to-cloud telemetry, test and log databases, data pipelines, and user applications. You have built software for hardware fleets and the people who use them.Please send a note to chrome.braindance@gmail.com that shows what you&#x27;ve built. A resume works, but a quick description of a real project is better. Photos, videos, and links are welcome.We look forward to meeting you!

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