whoishiring.jobs

fortrabbit | PHP / Symfony developer | Berlin | REMOTE or hybrid (Visa) | full-time | €55k - €75k | https://www.fortrabbit.com

fortrabbit is PHP as a Service — cloud hosting dedicated for a modern PHP. More dev, less ops for web designers, startups and digital agencies. fortrabbit is a small bootstrapped company located in Berlin Kreuzberg. If you've ever wondered what it's like to build and grow services for yourself, this is the place. We use our own services every day to be more productive in our work. We take work seriously and expect each person to be self motivated.

https://fortrabbit.notion.site/PHP-developer-15fed2d09f62806...

Optimal | London, UK | ONSITE

AI Simulation and Control Engineer: Up to £150k + 2% depending on experience (https://wellfound.com/l/2AUs7A)

Optimal builds AI agents to control the world’s critical infrastructure - from factories, to datacenters, to farms.

We are backed by the Director of AI Research at Google DeepMind as well as early VC investors in SpaceX, Anduril, and Palantir.

We have built the world’s most advanced AI control system for high-tech greenhouses and have just signed out first customer contracts in North America and Europe having proven the performance of our AI across 3 seasons in our own demonstration greenhouse.

david@optimal.ag

https://www.optimal.ag

REMOTE | UNITY | CONSULTANT/DEVELOPER | VIDEO GAME MODDING

Hiring a consultant Unity developer to initially advise on a new project in March/April with the long term work either just consultation, management or full time development afterwards.

We rely heavily on modding and extracting data from the video game Football Manager which is being rewritten in the Unity engine for its latest version slated for release in March or April 2025.

We are looking for a Unity expert to help assess the new game and identify possible modding capabilities as soon as it is released and then work together to make a long term plan to mod the game.

We are open to working with a long term solo developer or creating a team of individuals. Until the game is released we will not know the full requirements. However we would like to have someone available to get started on the day of release, hence the flexibility of being just consultancy initially.

100% remote and flexible on hours.

Please reach out to contact@gamesnook.net

Synthetic Media | https://studio.sir.ai/ && https://metag.ai | REMOTE-FIRST | FULL-TIME | Full Stack Engineer (APP + Backend Engineer)

We're constructing cool generative content forms. If you like building amazing software, contact us! email me at hi@metag.ai

Sourcetable | Staff-level Engineers | San Francisco | ONSITE | https://sourcetable.com

We're building an AI spreadsheet and application platform for the next billion people. We are most commonly compared to Sheets/Gemini and Excel/Copilot, or referred to as "Cursor for Spreadsheets".

If you are an excellent full-stack engineer (React/Python) with good product sense and experience building hard things, please come talk to us. Most of our team are ex-founders, and there is an expectation that you can build end-to-end without requiring assistance from others. AI experience is nice but not required, this is a product engineering role.

There's a platform shift underway. Let's get after it!

eoin@sourcetable.com

traceoid.ai | Remote | Various roles

traceoid.ai (http://traceoid.ai) is revisiting the theory that underlies machine learning. Our approach opens up the door towards scalable energy-based models, faster and cheaper training and inference and interpretability. If we succeed, our approach will mark a significant step forward towards achieving AGI. Here is what Yann LeCun had to say about EBMs https://x.com/ylecun/status/1380066315600343042.

Please reach out, if you have background in any of these fields (or are excited to learn):

- integrable systems

- algebraic topology (in particular Hopf algebras, tensor categories)

- quantum groups

- category theory

- statistical mechanics

- computational physics (see the link above for a full list).

Our company operates at the intersection of research & development, and as a part of this job, you will be reading papers and implementing some very cool research from the above fields. You will be joining a team with several PhD's and while advanced degrees are not a hard requirement, you are expected to possess deep knowledge of the above fields. Ideal candidate would understand how one goes about writing high perf code as well as be able to explain the concept of a Hamiltonian. Contact us at adam+jobs@traceoid.ai.

You can also join our Discord channel https://discord.com/invite/mr9TAhpyBW even if you just want to follow along.

CloudTrucks| Senior Front-End Engineer | SF | On-site | Full-time | $185k-$225k + Equity | https://jobs.ashbyhq.com/cloudtrucks/acddc0ac-c67f-4f40-9b6c...

CloudTrucks is building tools to help truck driver's manage their business and earn more money.The U.S. trucking industry generates over $700 billion annually, with more than 3.5 million truck drivers on the road. As a company we’ve hit ambitious growth targets in 2024 and are gearing up to accelerate that momentum even more next year. As a Senior Engineer on the Growth Engineering Team, you’ll play a key role in supporting this next phase of growth by rethinking how we onboard drivers at scale and enabling them to get on the road quickly.

You can email: george [at] cloudtrucks [dot] com to learn more and apply

Apply directly here: https://jobs.ashbyhq.com/cloudtrucks/acddc0ac-c67f-4f40-9b6c...

Exa Labs Inc. | Onsite San Francisco CA | Full time | Multiple Roles Exa is a search engine built for AIs. We enable developers to filter the internet's content with complex queries in order to bring the world's knowledge into their AI apps.

Please apply here https://exa.ai/careers

•Designer

•Frontend Engineer

•Backend Engineer

•Full Stack Engineer

•Sales Engineer

•ML Research Engineer

•Chief of Staff

•Recruiting Coordinator

Vannevar Labs | REMOTE-FIRST | FULL-TIME | Offices in DC and NYC

Vannevar Labs builds next generation defense software for the public servants keeping our country safe. As a team, we exist because we believe in public service, and we think that our democracy and government improve only if we put serious, collective effort into improving them, including the technology our government uses. We build software to help the the US deter and deescalate conflict. We are a profitable growth startup with some of the best defense investors in the world, including General Catalyst, DFJ Growth, Point72, and enterprise tech investors Costanoa and Felicis.

We're looking for engineers across a number of departments, including our newly formed sensing team (embedded, perception engineers)! Apply on our website:

https://boards.greenhouse.io/vannevarlabs

Stainless | Engineers, EMs, Former Founders, AEs, Business Generalists, more | NYC ONSITE | Full-time

Stainless is building the platform for high-quality, easy-to-use APIs.

Our first product is SDKs as a service. I built the codegen system at Stripe for their SDKs, and am now building a better version for everyone.

When you `npm install openai` or `pip install anthropic` or `go get …cloudflare`, for example, you’re downloading code that we generated.

We’re ~3y old, ~20 people, have strong revenue, several years of runway, and great customers (including OpenAI, Anthropic, and Cloudflare). We’re backed by Sequoia & a16z.

As one of our first 20 engineers, you’ll get autonomy to build great products, skilled peers, opportunity for tremendous impact, and competitive salary, benefits, and equity.

We’re looking for exceptionally productive, thoughtful, tasteful, and kind people with a passion for making software development better for everyone.

Want to build the future of API tooling? See more at stainlessapi.com/jobs

Lumos | REMOTE (± 4h Pacific Time) | Staff Applied AI Engineer, Lead Data Engineer | 175k-300k + equity | lumos.com

Lumos addresses app and access management challenges for organizations of all sizes with a unified platform. Imagine an enterprise-grade AppStore for work. Seamlessly search for, request, and gain access to any app you need, exactly when you need it. By integrating data on access, usage, spend, and compliance, Lumos is redefining how businesses manage their apps and identities.

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Staff Applied AI Engineer

Apply here: https://job-boards.greenhouse.io/lumos/jobs/6259424003

As a Staff Applied AI Engineer, you'll collaborate with domain experts, the data engineering team, and cross-functional groups to build production-ready AI systems. Your responsibilities include designing AI infrastructure, refining AI models, and scaling AI-powered access management solutions to meet evolving business needs.

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Lead Data Engineer

Apply here: https://job-boards.greenhouse.io/lumos/jobs/6259401003

We’re looking for a Lead Data Engineer to expand and enhance our data infrastructure, leveraging tools like MySQL, Fivetran, Airbyte, and Snowflake. In this role, you'll design and implement production-ready data pipelines with a focus on reliability, testing, and scalability. Your work will enable flawless AI products and in-product analytics, delivering real value to our customers.

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Feel free to reach out directly to me: patrick@lumos.com

Fabi.ai | https://www.fabi.ai/| Senior front end engineer | Full-time | Hybrid SF or Remote (US)

We're looking for a senior front end engineer to join our mighty and growing team.

We're transforming the way data analysis is done in the enterprise and already have some amazing customers and are growing rapidly.

This person should have extensive React and Typescript experience be able to operate with minimal design supervision (we're a small team and we expect this person to have a sharp eye).

Full job description: https://www.linkedin.com/jobs/view/4093878394

IBM | Hybrid in Cambridge, MA (Boston metro area) | Full Time | Research Engineer

The MIT-IBM Watson AI lab is hiring a Research Engineer.

Information on base salary ranges etc. can be found at the posting: https://ibmglobal.avature.net/en_US/careers/JobDetail?jobId=...

If you've been hacking on/with LLMs, please apply! The job posting casts a wide net, so please don't self-disqualify if you only check some of our boxes. Prior research experience is great but we're more interested in cool things you've built than in pdfs you've pushed through academic gauntlets :-)

Klyo | NYC, In Person | Full Time | Full Stack Engineer | 100-150k, 1-2% Equity

At Klyo AI, we’re building the AI-powered data and marketing assistant for small businesses, starting with the med spa space. Forget dashboards, charts, and data tools—our AI seamlessly connects fragmented data to provide actionable insights, next steps, and clear answers, delivered in real time through text or email.

We’re pre-seed, growing fast (with paid clients who love us), and ready to scale. As our Founding Engineer, you’ll be at the core of building, improving, and scaling our technical foundation and direction, helping us bring this vision to life.

We are looking for product-minded full stack engineers who:

   - Have had 5+ years of hands-on software engineer experience, especially at earlier stage startups
   - Have experience leading projects end-to-end and taking ideas from conception to execution and iteration independently
   - Are technically versatile:
      - Experience building in AI/ML or NLP agents (OpenAI, LLMs, data pipelines, etc.).
      - Strong backend experience with any programming language (we use python)
      - Has worked with AWS infrastructure and PostgreSQL
      - Familiar with React, Next.js or something similar for small/medium sized applications
   - Customer-Focused: You care about solving real problems for users and  can balance technical decisions with customer impact.
   - Resourceful & Scrappy: You love taking ownership, moving quickly, and figuring things out with limited resources.

What We Offer

   - Meaningful Equity (1-2%) in a fast-growing pre-seed startup.
   - Competitive starting salary: $100K–$150K (with room for growth)
   - A chance to be a foundational part of Klyo AI and shape the technical future of a product solving real customer pain points.
   - A collaborative, product-focused environment with a mission to change how small businesses use their data.

How to Apply

Email your resume and a few sentences about why you’re excited to join Klyo AI to founders@klyo.ai.

Juniper (YC W21) | Senior Software Engineer | Full-time | HYBRID NYC | juniperplatform.com

Juniper is working to improve the messy financial infrastructure for US Healthcare. We've built an automated end-to-end insurance billing system for recurring care, starting with Autism clinics. It’s a product that clinicians need and love.

We automate and abstract the tedious, manual, repetitive work that goes into the administrative duties of running a clinic, so that clinicians can do what they do best — providing care.

It starts with ingesting clinic data, and then create, validates, and submits claims to insurance providers across the country. If claims need corrections or appeals, most of the time we can handle those automatically or our CX and Operations team use our in-house internal tools. We also handle patient invoicing for co-pays, co-insurance, and deductibles (we never send anything to collections).

We are a team of ~40 with strong product market fit. You’ll be working with an engineering leadership team from AWS and Stripe to get clinicians back to work delivering care for kids.

Email us at josh.paul@juniperplatform.com or apply at jobs.lever.co/juniperplatform

Resemble AI | San Francisco Bay Area (office in Mountain View, CA) | Full-Time | Full-Stack Engineer

We're creating state of the art Generative Voice AI models. Looking for full stack, frontend and machine learning engineers that would love to create prototypes directly with the founders. Recently, we open sourced a state of the art speech enhancement model: https://github.com/resemble-ai/resemble-enhance

Here's what we're looking for:

Full Stack Engineer - We are seeking a skilled Full Stack Engineer with experience with both Javascript and Python to join us. The ideal candidate will have a strong background in building and deploying web applications, a passion for working on cutting-edge AI technologies, and the ability to collaborate closely with our founders to create innovative prototypes.

Backend Engineer - Looking for Ruby on Rails and/or Python Developers to join our backend team. Scale up ML systems, make inference run more efficiently, and expose public facing APIs.

ML Engineer - Looking for engineers that are interested in deploying large foundational models and optimizing inference. Must know PyTorch well. Knowledge of ONNX, TensorRT is bonus.

If interested, reach out directly to me: zohaib [at] resemble.ai

Primitive Instruments | https://primitive.tech | NYC or Remote | Full Time or Contract | $150k+

Hey HN, we’re looking for full stack engineers and generalists over at Primitive Instruments Corporation. At Primitive, we make tools that help hardware engineers ship faster. We work with companies building next-gen silicon to startups building small fleets of various devices.

We’ve built a ton already and have customers running their entire CI/CD stack through our platform. This includes things like per commit / nightly simulation jobs, data retention, hardware observability, and more.

If you’re interested in building next-gen infrastructure for engineers building physical devices (with an awesome and passionate team!), please shoot us an email at work at primitive.tech

Core Technology Stack: Python, Django, GraphQL, React, Next.js, Postgres, Redis, RabbitMQ and Kubernetes (also an increasing amount of Rust).

Some Tools/Libraries We Use: UV, pnpm, Turborepo, Strawberry GraphQL, Tanstack Query, Shadcn, Click, Celery, Docker, Loki, Prometheus, etc.

Primitive is a small (<5), early-stage VC-funded startup.

Astronomer | Senior Software Engineer | US REMOTE | Full-time | https://www.astronomer.io/

At Astronomer, our R&D team is dedicated to providing an exceptional experience in managing Apache Airflow at scale. As a leading player in the industry, we are seeking two experienced Software Engineers to work on our data observability product - Astro Observe.

For more details and to apply: https://jobs.ashbyhq.com/astronomer/da3426d9-9da9-47e5-aadc-... https://jobs.ashbyhq.com/astronomer/0435e8cd-03a8-4253-ac1f-...

Riot Platforms | Onsite | Austin Tx | Software Engineer

Looking for a software engineer in the Austin area that wants to work in Bitcoin mining.

https://www.riotplatforms.com/careers/

Count | Senior Software Engineer | REMOTE within UK/Europe | Full-time | https://count.co | £100-140k + Equity

Count is like Jupyter, Tableau and Miro combined in one tool. Some of the world's leading data teams use it for everything from iterating data models and performing in-depth analyses to creating process flow maps of their entire business.

We're a small team looking for experienced software engineers who are interested in tackling deep technical challenges in the data analytics space.

For the best possible user experience, we have developed various technologies in-house, including a custom WebGL rendering engine, our own data visualization library, and a reactive SQL/Python notebook and database query framework.

Example projects: accelerating rendering using quadtree tiling, extending interactivity and customizability of visualizations, leveraging LLMs in data exploration, developing serverless frameworks for executing database queries at high concurrency.

Our tech stack: TypeScript, Python, Node, WebAssembly, WebGL, Apache Arrow/Parquet, DuckDB, Kubernetes, React.

For more details and to apply: https://jobs.ashbyhq.com/count