Martin AI (YC S23) | https://trymartin.com | Founding Product Engineer | Founding AI Engineer | San Francisco (ONSITE)

Martin is an AI personal assistant. Text, call, or email Martin. It manages your calendar, inbox, to-dos, reminders, notes, messages, calls, and more.

Why work at Martin?

- We've built the most advanced AI personal assistant on the market, light years ahead of Siri and Alexa.

- 5 months since launch, Martin has completed over 500,000 tasks for 30,000 users, and our user base is growing 10% every week.

- Our team is lean but effective, with a culture of shipping fast and obsessing over user experience.

- You’ll have a large impact on our product direction, which will be reflected in significant equity compensation.

- Our mission is to build the most impactful consumer product since the iPhone.

Apply at: https://www.ycombinator.com/companies/martin/jobs/

Zefr | Los Angeles, CA (Marina del Rey) | Senior Site Reliability Engineer | Full-time | On-site 2-3x per week | $150,000 - $170,000 Company

We are the leading global technology company enabling responsible marketing in walled garden social environments. Zefr’s solutions empower brands to manage their content adjacency on scaled platforms such as YouTube, Meta, TikTok, and Snap, in accordance with industry standard frameworks. Through its patented AI technology, Zefr offers brands and agencies more accurate and transparent solutions for social walled gardens

Role

Senior Site Reliability Engineer

You

We’re looking for someone to combine their technical expertise with strong leadership and a passion for continuous improvement and innovation. By ensuring the continuous health and efficiency of our infrastructure, including those supporting critical ML workloads, you will directly contribute to Zefr’s commitment to providing a consistently high-quality user experience. This is a role where we both expect to learn from you and have you learn from us!

Tech Stack

Clouds - GCP, AWS

Kubernetes - GKE, EKS

GitOps - ArgoCD, Github Actions

Languages - Python/React/Node.js

Observability - Prometheus, Grafana, Open Telemetry, Datadog

How to apply

https://zefr.com/about-us/careers?ashby_jid=546d27a5-d0f1-41...

New Lantern | https://newlantern.ai | Software engineers (infrastructure engineers & backend-leaning product engineers) | Full time in San Francisco, CA (ONSITE)

New Lantern is hiring software engineers to help build an AI copilot [1] for radiologists.

Radiologists are experts at diagnosing disease in medical images, but they spend over half their working hours on tasks that have nothing to do with diagnosis: reading prior reports, transcribing handwritten notes, taking manual measurements, dictating reports, and chasing down follow-ups. New Lantern is building an AI copilot for radiologists to automate this non-diagnostic work, so radiologists can focus on what they do best: caring for patients and interpreting images.

We are starting to find product-market fit and recently raised a $19M Series A from Benchmark [2]. Demand for our product is growing, and we're hiring software engineers in San Francisco to help us scale our product and our team. We work together in person five days a week from our office in Jackson Square.

Engineering is at the heart of New Lantern. Our engineers work directly with our founder/CEO, our staff radiologist, and our end users to build features that radiologists rely on daily. Everyone has real ownership and autonomy, moves quickly, and ships meaningful work frequently. We're a small, sharp team of frontend, full-stack, and backend engineers building a React-based web app backed by Python services, cloud infrastructure, and LLMs.

I'm Steve, New Lantern's Head of Engineering. If you're interested or want to learn more, shoot me a note at (my HN Email is hidden.

[1] We translate "AI copilot" to "AI radiology resident" when we speak with medical professionals, but the former is the clearest way to communicate what we're building here.

[2] https://newlantern.ai/blog/new-lantern-19m-series-a-led-by-b...

SerpApi | https://serpapi.com | Junior to Senior Fullstack Engineer multiple positions | Customer Success Engineer | Hiring Coordinator | Python/Ruby/PHP/Js/Rust/Cotlin/C#/Crystal/Nim/Elixir Developer Advocate positions | Based in Austin, TX but remote-first structure | Full-time | ONSITE or FULLY REMOTE | $150K - 180K a year 1099 for US or local avg + 20% for outside the US

SerpApi is the leading API to scrape and parse search engine results. We deeply support Google, Google Maps, Google Images, Bing, Baidu, and a lot more.

Our current stack is Ruby, Rails, MongoDB, and React.JS. We are looking for more Junior and Senior FullStack Engineers.

We have an awesome work environment: We are a remote first company (before Covid!). We do continuous integration, continuous deployments, code reviews, code pairings, profit sharing, and most of communication is async via GitHub.

We value super strongly transparency, do open books, have a public roadmap, and contribute to the EFF.

Apply at: https://serpapi.com/careers

Boost My School | Senior or Staff Software Engineer | Full-time | Remote, USA only | $147-$185K salary | $16-26K bonus

Love building a product that improves a user’s life so much that they can’t help but share it with their peers?

Boost My School is on a mission to help schools fund brighter student futures. Our platform is trusted by 200+ K-12 schools to modernize their fundraising, events, and auctions.

Why work at Boost?

1. We make meaningful impact helping schools and students

2. We win as part of a thoughtful and collaborative team

3. We embrace ownership over our work, growth, and time

For full job details and instructions on how to apply: https://boostmyschool.com/careers#senior-software-engineer

Leadership team you'll be working with:

- CEO, coded first version of product (https://www.linkedin.com/in/holman-gao)

- Head of Product, ex Apple, Flexport, Stanford CS (https://www.linkedin.com/in/nathaniel-okun)

Tags: edtech, fintech, social impact, mission-driven

Stack: Ruby, Rails, React, GraphQL, Typescript

Substrate Labs | Founding Engineer | NYC or remote | https://www.notion.so/substrate-labs-founding-engineer-2067b...

Founders Ben [0] and Rob [1] have been friends since meeting at Venmo in 2013. Ben worked at Stripe for 8 years. Rob worked at Fin (human-in-the-loop AI executive assistant, before LLMs) and was founding engineer at Substack. We started our first product, Substrate in 2023, a platform for building agentic workflows, and raised an $8M seed round led by Lightspeed [2]. We were pushing the envelope on both infra (serving multi-model workloads efficiently) and developer experience (ahead of our time in several ways) [3]. Though we found solid traction with startups, we realized inference was a red ocean especially upmarket, and decided to spin down the product/team at the end of 2024. We've spent the last 6 months prototyping and discarding ideas, and we’re now gearing up to launch our latest vision, a consumer AI application.

[0] https://www.linkedin.com/in/bgdotjpg [1] https://www.linkedin.com/in/robertkcheung [2] https://lsvp.com/stories/substrate-building-compound-ai-syst... [3] https://docs.substrate.run/

Email me (ben [at] substrate) with your resume. Competitive comp with meaningful equity.

Good Pair Days | Lead Engineer, Fullstack | Full-Time | REMOTE (Australia +- 1h) | https://www.goodpairdays.com | AUD $150,000 to $250,000 + Stock Options

Profitable wine-subscription scale-up (tens of millions ARR) that used ML for personalised recommendations before "AI" was cool. Own and scale the whole stack (React/React Native, Python/Django, GraphQL, Postgres, AWS), ship new AI-native features, chase latency spikes, and grow the team from 1 → 5+.

You're a commercial thinker who speaks unit economics, retention levers, and gross margin as fluently as REST endpoints; resourceful, data-driven, ops-literate, and never stops tinkering with the latest models.

Comp up to A$250k + meaningful equity.

You can email me directly ("beto" at our domain name specified above and the subject line as "From Hacker News | Remote | {your country}") with (1) a tech decision you owned and its business impact, and (2) the first AI experiment you'd run at GPD.

[flagged]

Fluidstack | Forward Deployed Engineer, SWE, SRE, Infrastructure, Networking, Devrel | London/SF/NYC or remote | fluidstack.io Fluidstack builds and operates GPU supercomputers for top AI labs, governments, and enterprises. Our customers include Mistral, Poolside, Black Forest Labs, Meta, and more. Engineers at Fluidstack work on a wide variety of activities, including:

- Deploying clusters of 1,000+ GPUs and operating them with and for customers.

- Validating correctness and performance of underlying compute, storage, and networking infrastructure, and working with providers to optimize these subsystems.

- Migrating petabytes of data from public cloud platforms to local storage, as quickly and cost effectively as possible.

- Debugging issues anywhere in the stack, from “this server’s fan is blocked by a plastic bag” to “optimizing S3 dataloaders from buckets in different regions”.

- Building internal tooling to decrease deployment time and increase cluster reliability, including automation where the customer benefits clearly outweigh the implementation overhead.

We don't require prior experience with GPUs or AI/ML; we require a willingness to learn quickly, work hard, and obsess about customer success.

Apply here: https://jobs.ashbyhq.com/fluidstack or email careers at fluidstack dot io

Tram Case | Hiring Head of Engineering and Tech Lead (Los Angeles)and senior Backend, Full Stack & AI Engineers(Remote, LATAM only) | Spanish & English required

We’re building AI-powered tools to help law firms work faster, smarter, and with less busywork.

Our first module is an AI call center that transcribes and classifies calls to help teams prioritize urgent cases. But that’s just one piece — we’re building an end-to-end platform that automates the entire case lifecycle, from intake to resolution.

We’re a small, senior team based in LATAM. You’ll work directly with the founders and ship new features from scratch. No layers of approval, no legacy code — just thoughtful product work, shipped fast.

We’re hiring a Head of Engineering (based in Los Angeles), a Tech Lead (LATAM or LA), and Backend, Full Stack, and AI Engineers (LATAM only). All roles are remote, except Head of Engineering, which is LA-based with flexibility for hybrid work.

Tech stack: Python, JavaScript/TypeScript, ML/AI pipelines in AWS.

Apply: https://tramcase.na.teamtailor.com/

More: https://www.tramcase.com