Hi HN! CrossnoKaye is a Series C startup tackling climate change by transforming the heavy industrial sector. Our platform uses real-time optimization, advanced modeling, and modern cloud infrastructure to deliver 40% average energy savings and megaton-scale emissions cuts across industrial facilities. https://crossnokaye.com/

We’re hiring for 3 roles and looking for builders who want their work to have real-world climate impact:

1. Sr. Software Engineer - Control Systems |REMOTE (US)| This role would have the opportunity to support our control systems infrastructure initiative, which involves real-time control strategies, secure cloud communication, and large-scale system performance, all built in Go with AWS and Kubernetes. Deep Golang experience is a must-have.

2. Sr. Software Engineer – App Team | REMOTE (US)| In this role, you'd be partnering directly with physicists and data scientists on our Applied Science team to productionize cutting-edge research in physics simulation and optimization algorithms. Must have strong proficiency in Python and its data science ecosystem (e.g., numpy, pandas).

3. Sr. Software Engineer in Test | REMOTE (US)| We’re looking for a hands-on engineer who loves Python, backend frameworks, and automated testing. You’ll design and implement test frameworks for our ATLAS and Energy AI platforms, ensuring reliability across distributed, cloud-based systems. Must have strong proficiency in Python.

Interested? Email our team: careers@crossnokaye.com -- Please include a resume and the title of the role you're interested in within the subject line.

Thank you & I look forward to hearing from you!

Continua AI | https://continua.ai | Multiple Roles | ONSITE (NYC/Seattle) | Full-time | Salary + Equity

At Continua (http://continua.ai/), we're on our way to solving Social AI, and we're expanding our team! We've built an AI agent that users can invite into group conversations to make planning, coordination, and information retrieval effortless. We're social creatures and it just seemed to us a huge opportunity to bring AI into group settings. We've seen strong retention over the last few months and want you to help us bring our product to the next level. Try adding our agent at http://continua.ai/ to group chats and kick the tires! https://techcrunch.com/2025/08/12/google-vet-raises-8m-for-c...

I’m David (https://www.linkedin.com/in/dpetrou/), the founder and CEO. Before starting Continua, I was a Distinguished Software Engineer at Google. We’re backed by top-tier VCs (like GV) and incredible angel investors (like Jeff Dean). Our team is a fantastic bunch (http://continua.ai/team) of accomplished engineers and researchers from Google, Disney, and several AI startups. We're pretty clued in on the technology side and have a strong vision of how the transformative technology of the last few years along with our own secret sauce (not just a ChatGPT wrapper) can help a huge number of people.

We’re hiring systems and ML engineers: https://jobs.ashbyhq.com/continua/

You'll work on building and improving the best LLM group chat experience there is, including fine-tuning models to boost conversational quality and improve scalability and identifying novel ways to build a "memory" which leads to a personalized and unique experience for our users. You understand what it means to work at a fast-moving startup.

Oh, and we maintain a vibrant blog, including items of technical interest, at http://blog.continua.ai/. Check it out! :)

Enveritas (YC S18, non-profit) | Backend Software Engineer | Remote (Global) | https://enveritas.org/jobs/

Enveritas is a 501(c)(3) nonprofit working on sustainability issues facing smallholder coffee farmers. We collect field data in 25+ countries and build systems for analyzing risks in coffee supply chains (including EUDR-related deforestation checks).

* Backend Software Engineer (Python, PostgreSQL/PostGIS, Docker, AWS, Terraform) - $135-$155k — https://enveritas.org/jobs/backend-software-eng/#10d7adef8us (worldwide remote)

Proven Software | Senior Fullstack SWE | REMOTE (US) Full-Time | $140k-$170k

Proven is a start-up software company delivering a modern electronic medical record (EMR) to Behavioral Health & Physical Therapy. Proven’s Founders and Executive team have decades of experience successfully growing and scaling companies in healthcare.

Stack: .NET/C#, SQL Server, Blazor with Telerik controls.

We're looking for a senior full-stack engineer with .NET experience. Experience working in Azure and/or with Blazor is a major plus but not required.

We primarily work ET hours but are flexible Excellent PTO and employer-sponsored healthcare benefits

Email us at: hiring AT provensoftware DOT com

GrayMatter Robotics | Robotics Engineers, Architecture, IT/Automation | LA, USA ONSITE | https://graymatter-robotics.com/ –

GrayMatter Robotics deploys robotic systems for tackling tough jobs in surface finishing. We're a fast-growing company that solves some of the most challenging and rewarding tasks in manufacturing. We're deployed in production all over the US.

–

Robotics Engineer (all types) | $100K - $200K + Equity

We're looking for a few types:

  - product engineers and generalists who can design and build features from concept to production
  - experienced ML for robotics specialists
  - perception robotics engineers, motion planning engineers

-

Lead Robotics Architect | $200k - $240k + Equity

If you're passionate and super skilled at architecture and c++ for large robotic systems, this is for you! We're building a software stack that is flexible and needs to handle a large variety of surface finishing applications (sanding, polishing, spray painting, sand blasting, grinding, ...).

-

two dozen more roles on our jobs page - not all roles are mentioned are on here: https://jobs.ashbyhq.com/graymatter-robotics

I'm the hiring manager - mentioned HN in your email: achille.verheye@graymatter-robotics.com

Nordic Semiconductor | Full Stack Developer (Python, C#, Rust, Go or C++.) | Full time | Oslo, Trondheim, Norway

Nordic Semiconductor is a global leader in wireless technology.

Are you passionate about building robust, scalable software solutions that make a real impact? We are seeking an experienced and motivated Full-Stack Software Developer to join our dynamic CAD & DevOps group in Design Enablement Department. You’ll have the opportunity to work on essential projects such as developing software for design automation and creating advanced tools that enhance EDA design flows. You will leverage modern technologies including Jenkins CI/CD, Docker, virtual machines, and cloud platforms, as well as data visualization tools like Plotly and Dash, to deliver robust and efficient solutions for our engineering teams.

Key responsibilities

    - Design, develop, and implement custom tools and applications across both frontend (web) and backend (database) environments.
    - Take ownership of service operations, ensuring reliability, performance, and continuous improvement of developed solutions.
    - Provide expert technical support for software products, acting as a primary contact for troubleshooting and resolution.
    - Document custom tools, create comprehensive how-to guides, and maintain clear procedures to facilitate seamless knowledge transfer and onboarding.
    - Collaborate closely with cross-functional teams, including engineers, product managers, and QA, to deliver high-quality software on schedule.
    - Contribute to code reviews, architectural decisions, and best practices to uphold strong software engineering standards.

Key Qualifications

    - M.Sc/B.Sc in Electrical Engineering, Computer Engineering, Computer Science, or a related field.
    - Strong programming skills in one or more of the following languages: Python, C#, Rust, Go or C++.
    - Experience with version control systems such as Git, Perforce, or Subversion, and familiarity with continuous integration/deployment (CI/CD) pipelines.
    - Comfortable working within a Linux/Unix environment, with proven ability to develop, debug, and deploy in these systems.
    - Excellent communication skills in English, both written and verbal, with the ability to convey complex technical concepts effectively.
    - Knowledge of database systems and REST APIs.

Please note that this position might be subject to a background check.

Apply here: https://nordictechjobs.com/jobs/3klpSfZY7b

BITS GmbH | Munich/Germany | IT Consulting | IT Project Management | Software Architecture | Software Development | DevOps | Fulltime | Onsite/Hybrid | https://mybits.de

At BITS, we support both, corporations and startups in the digitisation of their business units and processes. We are looking for fulltime (all genders)

  - IT Project Managers
  - IT Consultants (Digital Transformation, Cloud, Infrastructure)

  - Software Architects
  - Fullstack Developers

to join our teams.

If you are looking for challenges and like to push issues forward, then we would be happy to hear from you.

German language skills on the level of at least C are mandatory for the work in our projects.

More info: https://www.mybits.de/karriere | About BITS: https://www.mybits.de/portfolio/

Feel free to contact us: kontakt@mybits.de (please refer to HN)

VDX.tv (http://www.vdx.tv) | Remote Engineers & Developers | Full-time | REMOTE Established company (20+ years) looking for mature generalists to contribute remotely. You can be anywhere in the world so long as you:

● Are self-motivated and can work independently

● Driven to constantly learn and are always searching for the bigger picture

● Strong in clear thinking and written communication

● Have experience with many languages but can be effective in any language

● Appreciate that all mature software solutions accumulate technical debt and understand how to continually reduce debt and complexity

● Understand how to build highly reliable systems and be responsible for taking code to production

● Understand that code simplicity and readability are more important for long term maintainability

● Want to work on challenging problems and impactful work without being micromanaged

We're hiring across disciplines for engineers who work with Unix and have fluent written and spoken English:

● Backend Servers: Strong in C, Concurrency and Distributed Computing

● Backend Servers: Strong in Java

● Infrastructure: Strong in building infrastructure tooling to program infrastructure.

● Frontend: Strong in Javascript, Typescript, React, and advanced UI and browser applications

● Artificial Intelligence: Strong in Neural Networks, AI Workflows, AI Models.

● Product Design: Ability to spec and build out clean UIs and dashboards.

We value people who are generalists and are interested in learning, developing, and applying expertise across multiple areas.

Although our core business is in digital video advertising, we do research and development in areas such as programming languages, databases, distributed computing, infrastructure, and ai.

We are private, which gives us the freedom to explore many areas without investors and profits being the sole objective.

Full-time only. Remote only. We start out on a full-time trial contract basis for up to 3 months and use this period as an extended work interview for both sides to assess fit for long-term employment.

Please email hn.remote.jobs@vdx.tv if this sounds like the right fit for you.

IO Interactive | Tools Programmer | Full time | Barcelona, Brighton, Istanbul, Malmö, Copenhagen

IO Interactive is looking for a skilled Tools Programmer to join our Backbone team and help power the tech behind our games. You’ll be working across multiple flagship projects - our James Bond game, 007 First Light, our ambitious Project Fantasy, and the HITMAN universe - building and evolving tools in our proprietary Glacier engine. Together with artists, designers, and programmers, you’ll create robust, user-friendly workflows that let our teams move faster, experiment more, and bring world-class gameplay to life.

What you will do:

    - Collaborate to design and upgrade the Glacier editor and tools, empowering content creators.
    - Engage with users to understand production requirements and streamline workflows.
    - Customize and integrate tools to meet project needs.
    - Create user-friendly interfaces for efficient usage.
    - Integrate tools with version control systems.
    - Stay updated on the latest technologies.
    - Ensure high quality through testing and security measures.
    - Continuously improve tools based on feedback and project demands.

Who you are:

    - Have experience working in the gaming industry.
    - Proficient in C# and C++ with strong code design skills. Familiarity with WPF or similar UI technologies preferred.
    - Capable of task breakdown, estimation, and participating in task assessments.
    - Strong collaboration and communication skills, adept at discerning user needs.
    - Bachelor's degree in Computer Science or equivalent required. Master's degree preferred.

Who we are:

IO Interactive is an independent videogame development and publishing company with studios in Copenhagen, Malmö, Barcelona, Istanbul and Brighton. As the creative force behind some of the most talked-about multiplatform video games in the last decade, we are committed to creating unforgettable characters and experiences all powered by our award-winning, proprietary Glacier technology.

See job listing: https://nordictechjobs.com/jobs/ptyZqM4pB2

mod.io (https://mod.io) | Melbourne, Australia | Full-Time | On-Site / Remote (Hybrid)

--

mod.io is a cross-platform user-generated content (UGC) service provider which powers hundreds of games - including some of the biggest AAA titles in the world. If you enjoy working in a fast scale-up environment where we growth and impact is at your fingertips, we have a number of roles available!

- 2x Backend Engineers (PHP / C#)

- 1x Senior Platform Engineer (AWS / Azure)

For more information on our company and the roles please visit https://mod.io/careers

Please feel free to reach out to me at pat + hn @ mod dot io :)

Autokroma.com | C / GPU / AI dev workflows | HYBRID REMOTE-ONSITE | Porto / North of Portugal

We do audio video software : video editing plugins, web panels, GPU visual effects, encoders, decoders, AI assisted development & testing. All levels are welcome. You will work close to the code, users requests, whole UX in general, I try to minimize the layers between developers, products and final users. If any of those topics are of interest to you, and you're around Porto to meet me : send me an email, the first part of the email is "jobs" and after the @ the domain name. Tell me what you're looking for nowadays, a previous bad work experience you'd like to avoid and a good work experience that inspires you for the future.

Shorebird | Mid-Senior Systems/Runtime (C++) Engineer| REMOTE (North America) | Full-time | $160-230k + equity + benefits | https://shorebird.dev

Flutter/Shorebird founder here. Flutter is used by millions of devs (and nearly ⅓ of free apps submitted to AppStore), but is missing services for businesses. We offer Flutter-related SAAS used by 1000s businesses globally, on track to profitability early 2026.

As part of our over-the-air updates “code push” product, we’ve built a custom compiler and runtime for the Dart language, primarily written by me (founder/CEO). Now that we have thousands of customers, I have many other responsibilities and need to bring on a fulltime engineer (you!) to take over primary responsibility for all of our C++ code (Dart & Flutter forks, custom runtime, compiler, etc.) and evolve it further than I could alone. Together, you and I will add obfuscation, improve our interpreter, possibly re-write method dispatch, etc. You don’t need to be a compiler/runtime expert. You do need to be capable of working on large open source projects, be comfortable with C++, want to work at a startup, work well independently (we’re remote) and want to learn and work on lots of different areas of code.

If you’ve contributed at least a little to WebKit, Godot, Firefox, or any other large open source project, are compiler/runtime curious, and want to work at a growing startup, you will likely find this role extremely rewarding.

We’re a small, senior team, making something people want. Tech: GCP, Cloudflare, React, Dart, C++, Rust. Shorebird operates almost entirely in the public over Discord. https://discord.gg/shorebird

https://shorebird.dev/jobs

Category Labs | https://www.category.xyz/ | Remote and NYC | Full Time | $200K USD+

Category Labs (formerly known as Monad Labs) is a team of systems engineers and researchers on a mission to design and build at the frontier of decentralized technology. We strive to design and build step-function improvements over existing blockchain solutions. After raising $225M in series A funding, led by Paradigm, we are growing our team. Monad Mainnet Launched on November 24th!

Technical Project Manager: https://jobs.ashbyhq.com/category-labs/bdfe89a6-83f6-4ab3-b6...

Senior SWE (Rust, C/C++): https://jobs.ashbyhq.com/category-labs/45f674b2-d904-482e-a5...

Senior Researcher, Systems: https://jobs.ashbyhq.com/category-labs/015934c5-66e5-4042-94...

Bonsai Robotics | Senior MLOps Engineer | Hybrid (Bay Area) | https://bonsairobotics.ai/

Bonsai Robotics | Senior Computer Vision Engineer | Hybrid (Bay Area) | https://bonsairobotics.ai/

Bonsai Robotics is building the world's most reliable and versatile outdoor autonomy stack, starting with deployments in agriculture.

We're hiring both in the MLOps side, building the pipelines that feed our models with data, and the ML/CV side, building the models themselves and the associated CV algorithms. We're especially interested in engineers who have experience building/training 3D birds-eye-view detection/segmentation models, and 3D reconstruction.

Stack: Python, PyTorch, Ray, Rust/C++ (on-vehicle) Salary: 150,000 - 250,000 USD per year

Apply: https://bonsairobotics.ai/careers/

Feel free to reach out to john.macdonald [at] bonsairobotics.ai with questions.

MaFi Games | Senior ASP.NET (full-stack) | Contract | Remote

Hi, I'm the co-founder of MaFi Games, the indie studio behind Captain of Industry. We're looking for an experienced full-stack ASP.NET engineer to help us grow our community website, including features like a modding database, blog, and forum.

Some reasons you'd enjoy working with us:

- A multicultural, collaborative, and innovative work environment where your voice is heard.

- Fully remote job with flexible working hours and vacation schedule.

- High quality C# code base, code reviews, tests.

- High work satisfaction, work with a talented team on a popular video game with a wonderful community.

If interested, please see the detailed info, requirements, and application instructions at https://www.captain-of-industry.com/jobs-swe-hn, thanks!

Note: We are also looking for Senior Game devs, 2D artists, and SFX artists.

Tandem Health | Software Engineers | On-site in Stockholm, Sweden | Full time

At Tandem Health we're building a clinician copilot to allow clinicians to focus on care rather than administration. We’re building, launching and iterating quickly, and are already rolling out across some of the largest care chains across Europe, including most of the NHS.

Our core product listens in to the patient-clinician encounter to generate medical records, allowing clinicians to save 5-10 minutes per patient. No longer do clinicians have to catch up on administration after hours. Some even tell us that their partners notice they're much more relaxed after starting to use our product, and we couldn't be happier :)

We’re expanding our Stockholm team with exceptional engineers! We use Python (backend), TypeScript/React (frontend) and C# (Windows app) and our infrastructure runs on Kubernetes in Azure.

Even if we don’t have a role out your specific skill set, we’d love to talk! Our tech team is small but growing and you’ll have an outsized impact on an important problem.

More info at https://www.tandemhealth.ai/recruitment

Feel free to reach out to john.moberg@tandemhealth.ai if you have any questions!

ClickHouse | Senior Software Engineer - Distributed Systems / Cloud Data Infrastructure / Kubernetes | Remote

US remote preferred right now, EU is technically fine but I'm looking to ramp up in US atm

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-organised.

    Good at Go, Kubernetes (Understanding how to manage stateful services in a multi-cloud environment)

    We have a Python service in our Recommendation pipeline, so some ML/Data Science knowledge would be good.

    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] com

[0] https://www.youtube.com/watch?v=AFoMsLMZKik

[1] https://www.youtube.com/watch?v=ufY_JFPpzRI

PS: 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.

StorPool | Senior Software Engineer - Storage Core (C/Linux) | Remote (UTC-1 to UTC+5) | Full-time | Multiple roles

StorPool is building the future of data storage. Our software runs at the heart of modern clouds, delivering <100µs latency, 113M+ IOPS per cluster, and 99.999% availability. We're profitable, self-funded, and our customers love us (NPS off the charts).

We're looking for a Senior Software Engineer to join our Core Storage team. You'll tackle genuinely hard problems: writing custom Linux drivers, optimizing lock-free data structures at nanosecond scale, building fault-tolerant distributed algorithms, and debugging issues that go all the way down to kernel internals. This isn't CRUD work - it's systems programming at its most challenging.

Competitive salary, fully remote, meaningful time off, and a yearly education budget to keep learning.

If you get excited about shaving microseconds off I/O paths and building infrastructure that simply doesn't break, we should talk.

Apply here: https://storpool.com/force/senior-software-engineer-storage-...

Thunder Compute, YC S24 | https://www.thundercompute.com | In-person in San Francisco

Hiring 4 full-time Software Engineers for low-level C++ systems work (HFT skillset), reporting to the CTO, team ex-Citadel, ex-Aquatic, ex-Bain

We're a cloud provider using GPU virtualization software to arbitrage GPU prices.

To our customers, we are a direct substitute for Runpod, Lambda, Coreweave, etc. with a simple UX and low prices.

Our advantage is we have spent 3 years bringing research technology to market which lets us use each GPU more efficiently than competitors. We can buy GPU compute, make it more efficient, and resell it at 60%+ profit margins.

We recently closed ~$4.5M of funding to triple our team size with a focus on recruiting the world's best low-level talent.

If you're cracked at building C++ systems software, on noncompete and bored, or looking to do something more meaningful than creating liquidity (you can tell most of our team is from HFT), reach out.

To apply: email met at carl@thundercompute.com and mention HN. I read every email.

Saildrone | Multiple Roles | Onsite/Hybrid (US Only) | SF Bay Area (Alameda) | Full-Time | https://www.saildrone.com/

Saildrone is the world's leading collector of ocean-related in situ data via uncrewed vehicle, above and below the sea surface. We work with navies across the world to deliver insights about waterways, contribute to safety of life at sea, and mitigate illegal fishing and trafficking. Additionally, we work with governments, civic agencies, foundations, universities, and private companies around the globe to derive better information about our oceans and seas - be it sailing drones into the eye of hurricanes to obtain new scientific storm data, mapping out the ocean floor, collecting new CO2 data in hard-to-reach areas, or counting biomass to establish fishing quotas.

Maybe you saw that we've repeatedly hucked drones into category 4 hurricanes[1]. Or maybe that we completed a transoceanic cable survey for Meta[2]. And maybe you saw that we just announced a large partnership with Lockheed Martin[3]. Or maybe you didn't see any of that, but you're still intrigued by the idea of autonomous, long endurance sailboats that help us better understand and secure our planet.

Whatever the case, we're hiring for a breadth of different positions across our organization. In software, we're hiring for folks in our Perception, Platform, Frontend, and Vehicle teams. Stacks vary from team to team, but we're looking primarily for folks with backgrounds in C++, Python, and/or JavaScript (Node, TypeScript, React). All software positions are hybrid roles based out of Alameda, just a quick ferry ride across the Bay from San Francisco.

In addition to software engineers, we're also hiring for a bunch of other positions across the company in production/manufacturing, technical operations, and more.

You can see a list of open positions on our career page: https://www.saildrone.com/careers

Please apply through our career page; be sure to select "Other" and specify this HN post when asked how you heard about us!

[1]: https://news.ycombinator.com/item?id=28715110

[2]: https://www.saildrone.com/news/revolutionizing-deep-water-ca...

[3]: https://www.saildrone.com/media-room/press-releases/lockheed...