krea does AI research & builds AI tools for image generation, video generation, node-based workflows, LoRA training, and more. Small, mostly in-person team with a view of Alcatraz from the office window. Our users range from hobbyists all the way to professional designers at Apple or architects at firms behind The World Trade Center or Burj Khalifa.
We're looking for senior backend engineers. You'd work across our SvelteKit app (Postgres, Redis, Docker, ClickHouse), Python ML inference on GPU clusters, and k8s clusters across multiple cloud and GPU providers.
Some recent projects:
- building canary deploys with cookie-sticky traffic splitting
- implementing durable execution for long-running workflows
- designing our public API with OpenAPI docs auto-generated from Zod schemas
- implementing enterprise-grade authentication, authorization, and permissions
- optimizing ML inference for our hosted image generation models
We care way more about first-principles and core engineering skills rather than specific shenanigans around programming languages or particular tooling—knowing a lot about old UNIX principles is a plus though.
You should be comfortable owning things end-to-end. Experience with GPU infra is a plus. Many of us have some kind of creative background, it helps when building tools for creatives but is not a requirement by any means.
To apply, email d+hn@krea.ai (use the +hn suffix to make sure your email is prioritized!)
Hi HN. I am an Engineering Manager at Nectar Social, and we're hiring across product, design and engineering.
The traditional playbook of buying ads on social media platforms no longer works for most brands. Buyers make purchasing decisions from organic conversations on social media platforms like Instagram, Reddit, X, and LinkedIn. Nectar listens to conversations in real time, surfaces actionable insights, attributes engagement to revenue, and drives conversions.
We came out of stealth last year and we are on a fast growth trajectory working with brands like OLIPOP, Hatch, K18, and Little Spoon. The company is ~30 FTEs and has many interesting challenges:
1. We ingest data from major social media which brings scaling and performance problems
2. We run AI agents on the content which requires us to control cost and optimize quality
3. We need to present lots of information about social conversations in an understandable way which requires good design.
4. We need to build resilient systems that can work within the constraints of our third party dependencies.
Our tech stack is React, Typescript, AWS, Pulumi, Postgres, Clickhouse and Turbopuffer. We use AI tools thoughtfully to optimize our daily work - Cursor, Claude Code, Graphite, v0 / Replit, and Granola.
The roles we are hiring for:
- Staff Backend Engineer - https://jobs.ashbyhq.com/nectar-social/e5797dfd-275e-4a7a-b9...
- Staff Product Engineer - https://jobs.ashbyhq.com/nectar-social/2f942c62-bc21-41a2-ae...
- Founding Mobile Engineer (React Native) - https://jobs.ashbyhq.com/nectar-social/192caa1d-8f36-472f-b9...
- Senior Product Designer - https://jobs.ashbyhq.com/nectar-social/673bbd54-9a3b-4478-84...
- Senior Product Manager - https://jobs.ashbyhq.com/nectar-social/b63c6254-df3d-406e-83...
Please email careers@nectarsocial.com with "HN" in the subject line if you're interested.
Modal builds the serverless cloud used by many of the most popular AI companies you've heard of. People use Modal for inference, training, batch operations and also, sandboxes. A good example is the Ramp Inspect tool, that was built on Modal sandboxes. https://engineering.ramp.com/post/why-we-built-our-backgroun...
I am one of the hiring managers here, hiring for the Product Engineering team that builds the observability tooling for our developers. Modal is the cloud for many of our customers and we help them reason about what's happening in their systems, help them expand their use and generally have a good experience.
If you are interested in a product engineering role, please feel free to reach out directly via email at can@modal.com with a recent resume. This role is NYC based and is on-site, so please mention your current location also. I am especially looking for folks with deep ClickHouse, Postgres, Redis, and Python experience.
Product Engineering Role: https://jobs.ashbyhq.com/modal/a4b8b2b6-5d0c-4ba6-9256-b84be...
For all other roles, please apply from our website.
All roles: https://modal.jobs
ClickHouse is a popular, Open-Source OLAP Database. We are ClickHouse Inc, the company behind the database aiming to build the best in class real time data warehouse.
What we are looking for:
Distributed Systems / Cloud Engineers to build the AutoScaling Systems for a Cloud Database.
We also maintain our own ClickHouse-based Data Infrastructure. Bonus points if you've worked on auto-scaling or other data-driven forecasting challenges in the past.
Can work in an early stage startup environment. Proactive and hands on. You must be independent and self-organized. Good at Go, Kubernetes (Understanding how to manage stateful services in a multi-cloud environment) and Distributed Systems in general. SQL / ClickHouse SQL (goes without saying) You'll need to be able to do On-Call - debugging production infra or db issues If you can do low-level database programming (C++, ClickHouse) that's added bonus. If you want to work on operating production critical databases in the cloud on k8s + write data-driven algorithms for autoscaling, consider applying! Send me an email: manish.gill [at] clickhouse [dot] comPS: If you're a pure DevOps person or a pure Data Engineer who wrangles data tools, please read the above requirements carefully before firing off an email. This role is an intersection of a lot of sub-roles, not a particular specialization
Senior Software Engineer: You'll own complex technical problems end-to-end—translating customer needs into scalable architecture, optimizing AI model efficiency through prompt engineering, and shipping features that directly impact how revenue teams operate. We want bold ideas and people who push boundaries.
Junior Software Engineer: You'll work across our stack (Python, FastAPI, Next.js, React) alongside senior engineers, contributing to real features from day one. Great fit if you're hungry to learn, ship fast, and grow with a startup building cutting-edge agentic systems.
New Grad Software Engineer: Entry point for recent grads excited about AI and agentic systems. You'll get hands-on experience with our modern data stack (Postgres, ElasticSearch, ClickHouse, DuckDB), Kubernetes/AWS deployment, and Temporal.io workflow orchestration while shipping production code.
This role is based in our Manhattan office (4 days/week in-person). Full health and dental coverage.
Apply: https://forms.gle/kEi5MDDiaJKdyN3fA or email maksym at withlantern.com with your resume.
PostHog equips developers to build successful products by combining product analytics, feature flags, session replay, a data warehouse, CDP and many more.
* we have a public handbook (posthog.com/handbook) if you want to learn how we work, pay and more in complete detail.
* we are growing through more autonomy and transparency not through process.
* we have a ton of scale and a bunch of super interesting technical problems to solve
* we're building 20 more products over the next couple of years, so you could end up building one of those
* public compensation calculator! see immediately what you'd get paid
* we're hiring: product engineers, clickhouse operations engineer, incident response engineer, product managers, technical account managers and technical customer success managers.