Chorus One | https://chorus.one/careers | Platforms Engineer | REMOTE (Switzerland ± 6 hours)

Chorus One operates validators on many proof-of-stake blockchains (the ones where security is based on a Byzantine fault-tolerant consensus algorithm rather than wasting energy). We are hiring for several roles, but the one I will highlight is what we call Platforms Engineer. Some companies call this Site Reliability Engineering or Devops.

The main thing we do is take upstream software, build it, run it on our infrastructure, and then monitor it and optimize that setup. Some things that make this interesting are:

* Building automation that enables us to do this for many networks (70+ currently). * Doing this with high uptime, building automation for failover, etc. * Working with software that is on the one hand cutting-edge and doing interesting things (consensus algorithms, distributed systems, cryptography), but on the other hand that means it’s immature and often not easy to operate and monitor. Often we have to build custom tools, and dive into the source code of the project. We contribute patches upstream when it makes sense. * Some of these projects are exercising the limits of what a machine can do, we have to do some low-level investigation that requires understanding of what the Linux kernel and network hardware are doing to properly identify what’s going on. We do have a small cloud footprint, but run primarily on bare metal. We are looking for people who can not just configure services offered by the public clouds, but who deeply understand what lies below; people who could build their own cloud. That sounds a bit pretentious and it’s not exactly what we do, but it does involve many of the same aspects.

A recent example of what I personally find fascinating: last month Ethereum’s Holesky testnet experienced loss of liveness. This is a real-world, globally distributed system that implements Byzantine fault tolerance, with multiple independent implementations of the protocol. Several of these implementations had a bug in an update, which caused a split in the network. The protocol is designed to handle this situation in theory, but in practice it is triggering previously unexplored failure modes in the implementations, that are hard to test for in synthetic small-scale tests. I think there are very few places where you get to be involved in a planet-scale distributed system exhibiting “interesting” behavior, especially one that is not in control of a single entity. Of course, there is also the less fun part that the testnet was broken, alerts are firing, and it was hard and chaotic to coordinate a fix when the network is not controlled by a single entity. Fortunately it’s a testnet.

Apply at https://careers.chorus.one/o/platforms-engineer-remote.

[Stealth GPU Optimization Startup] | Toronto, Canada | Multiple Roles | Hybrid/Onsite | Full-Time A trillion dollars in GPU compute power will be deployed this decade. We are building the framework and tools that will enable this power to be fully utilized. We're looking to expand our engineering team and are interested in hiring individuals who can demonstrate proficiency in writing C/C++ code, CUDA, Python, and have a solid understanding of GPU architecture.

No bullshit interview process. I’ll probably chat with you for about half an hour about your relevant experience. I might ask to see some of the code you've written in the past. No take-home assignments. If there’s promise, you may be invited to work with us for one or two weeks, paid.

For students or recent graduates, we have a few internship openings. We’re happy to train people who show strong interest and solid foundational skills.

Email: Email is hidden (please write GPU somewhere in the email subject)

Category Labs | Compiler Engineer | NYC / Global Remote | $250k | Full-time

Category Labs is a blockchain R&D firm working on greenfield technology to accelerate the Monad blockchain network. We've got a growing team of top-tier compiler engineers working on challenging design and optimisation problems as part of this effort. Lots of opportunity for impact, great remote-friendly work environment and extremely interesting technical challenges.

Apply via: https://www.category.xyz/careers?ashby_jid=e5c34899-cea1-4d2..., or email Email is hidden with any questions.

AbbVie | AI/Software Engineer | Remote, UK/EU | Full-time

Are you a great coder (Python/Typescript, but great skills are transferrable), who enjoys close collaboration with end-users in solving their hard problems?

Do you have a solid foundation in the AI/LLM-world - or are you a great at the above and willing to learn?

Are you well versed in data engineering concepts, and excited to work with the latest GenAI models and bring these solutions into production? Then I'd love to hear from you!

We are a small team who care deeply about our work as well as each other. We iterate fast, and err on the side of showing a quick prototype of an idea, rather than spending hours in meetings talking about it.

Our vision for this project is extremely ambitious, and you will be a crucial part of making this a reality. We've been expanding the team, and are currently looking to fill a few extra roles in the UK/EU-timezones.

If you fit the above description, hit me up at Email is hidden with your resume + a little bit about yourself!

Sneos.com | Founder | REMOTE | I help compare outputs from multiple AI chatbots

At https://sneos.com, I've built a platform that allows users to write once and compare outputs from multiple AI models like ChatGPT, Claude, and Gemini side-by-side. This helps users understand the unique strengths and perspectives of different AI systems without the hassle of copying/pasting between services. Current Needs:

Growth Hacker (part-time/contract): Looking for a creative, data-driven growth specialist to help me scale the user base and optimize conversion from free to premium tiers. You should have experience growing B2C SaaS products and be comfortable implementing and analyzing marketing experiments quickly.

iOS/Android Developer (part-time/contract): While not an immediate priority, I'm interested in creating mobile versions of my web app. As the premium user base grows, I'd allocate more resources to mobile development. I'm open to sponsoring an open-source implementation initially, with potential for a more formal arrangement as user numbers increase.

Tech Stack:

Flexible (Objective C, Swift, Java, .NET, etc.)

What I Offer:

Flexible remote work Opportunity to shape a product in the rapidly evolving AI space Competitive compensation aligned with company growth

If you're excited about making AI tools more accessible and effective for everyday users, please reach out with your relevant experience and a brief note on why you're interested in working with Sneos.

Contact: DM me on X (Twitter) @SneoScom

Looking for my Shel Kaphan | Dirac | Lead Founding Engineer | 5% equity + £70k base (£100k base after series A) | London, Acton | in-person only

Dirac is building the next Walmart-sized retail company over 10+ years. We sell d2c and are doing £300k-£500k monthly sales (lots of toys and reasonably seasonal). I built most the initial systems which run the company’s backend (purchasing, databases, pipelines etc.) but we will need something (and someone!) better to reach £1bn+ sales over the next four years

We need to go from a bunch of bash scripts coordinated by systemd, adhoc estimators and pipelines to a more coherent machine for demand estimation, matching products, warehousing and purchasing.

You’ll be mostly writing code (django+postgre+a hetzner server) but also helping our two more junior devs.

The vision for the company is twofold: (1) find 1000s of suppliers and wholesalers worldwide and (2) to ingest all their pricing, logistics and then move stock to where prices and demand is highest.

Visa sponsorship possible.

Investors include will thorndike, charlie songhurst, patio11, backedvc and some others!

email Email is hidden if interested!

CredCore | Engineering | Full-time | Remote (anywhere) | www.credcore.com

CredCore helps companies analyze Credit Agreements using AI. We have two roles open: (1) Engineering Lead, and (2) Front-end Lead/Architect. Both positions require at least 10 years of experience. You should be familiar with design patterns and software architecture, and TypeScript AND Python. Both are full-time, remote roles. If you’re interested, please reach out to me at Email is hidden.

A cover letter is not necessary. But please share your resume and links to your GitHub/GitLab/StackOverflow/other profile, or blog/papers, or other portfolio we can review before setting up the interviews.

Sent yet another application, nothing. Y’all painting the office over there?

Arenko (energy transition/batteries) | London, UK | 2x/week in office

We work on industrial/grid-scale batteries and other renewable generation: monitoring, managing and trading them on multiple energy markets. Batteries like these: https://en.wikipedia.org/wiki/battery_energy_storage_system Everyone starting from the C-suite is passionate about addressing climate change and transitioning to renewable energy!

We're a small team of 7 backend engineers atm (other teams have Ops, FE and DS roles). We have paying customers and have been around for 10 years. Our current goal is to make the platform more scalable to deal with the customer growth and move to new markets. The biggest challenge is understanding how the various energy markets and energy storage in general work and then translating that to reliable working software.

We're currently looking for a Senior Backend Engineer (Go). Our office is in London Blackfriars and most engineers come in about 2 days a week, but this is flexible.

Feel free to message me with any questions or apply directly:

https://arenko.bamboohr.com/careers?source=hn

https://arenko.group/careers/

Giskard - Security for AI Agents | Multiple roles | Full-time | Europe | https://giskard.ai/

Giskard defends the vision of a Responsible AI that serves the business performance of companies and respects the rights of citizens. To embody this mission, Giskard provides AI professionals with a holistic testing platform to ensure the quality & security of LLM-based systems.

In 2022, we raised our first round of 1.5 M€ led by Elaia with participation from Bessemer & notable angel investors including the CTO of Hugging Face.

In 2023, we received a strategic investment of 3 M€ from the European Commission as part of the Horizon 2030 strategic program.

In 2024, we won a 3 M€ grant from Bpifrance to lead research in evaluation & mitigation for Large Language Models (LLMs), in a collaborative consortium with Mistral AI, Artefact, INA and BnF.

We're now expanding the team, and looking for AI & Go-to-market talent to join in these roles:

* Frontend Design Engineer: https://apply.workable.com/giskard/j/eb872047ff/

* AI Researcher: https://apply.workable.com/giskard/j/e89fe8e310/

* Customer Success Manager: https://apply.workable.com/giskard/j/1446f6a1b6/

* Enterprise Account Executive: https://apply.workable.com/giskard/j/1f95e78192/