Tau Robotics | Founding Engineer, ML Systems (Robotics) | San Francisco | ONSITE | Full-time

We’re building a general AI for humanoid robots using world-model-based reinforcement learning trained on large-scale real-world data.

This is a founding engineer role. You’ll work directly with the founders and own core parts of the training and data systems.

Work - Build data pipelines for large-scale multimodal robot datasets - Scale pre- and post-training runs to large GPU clusters - Improve inference efficiency on low-power embedded systems

Stack: Python, PyTorch, Kubernetes, Ray, Lance, dora-rs

Contact: alex [at] tau-robotics.com

SurveyMonkey | Canada (Remote), US (Remote), Ireland (Remote), India (on-site) | https://www.surveymonkey.com/

SurveyMonkey lets people create beautiful, engaging surveys and forms that inspire powerful feedback and inform smarter business decisions. We're hiring for a number of roles, including

* Director of Platform Services * Cloud / Infrastructure Engineers * ML Engineers * Full-stack Software Engineers

You can find more details and apply via https://www.surveymonkey.com/careers/dept/engineering/

WireScreen (Series A) | Senior Software Engineer | NYC - hybrid | Full-time | $165k-$210k base + equity | https://jobs.ashbyhq.com/wirescreen/e9d8e7e3-c737-43ee-8c7e-...

WireScreen is a fast-growing Sequoia-backed Series A startup building the go-to open source intelligence platform for navigating global supply chains and China-related risk. While China maintains some of the world’s most detailed corporate ownership records, the real challenge is connecting the dots. That’s where we come in—surfacing the networks, relationships, and financial ties behind companies to support national security, compliance, and regulatory oversight.

We’re looking for senior software engineers to build our data platform and help us ingest and model messy, unstructured data into insights and actionable intelligence. At the heart of this is a 50m+ entity knowledge-graph with 200m+ relationships represented - and we need your help to build a system that can scale this up by an order of a magnitude. Today, we mostly use Python, Postgres, Airflow and Pyspark.

If you have prior startup experience, can bring strong Python (PySpark is a big plus) experience and have previously worked with TB-scale data sets - we’d love to talk to you.

Apply here: https://jobs.ashbyhq.com/wirescreen/e9d8e7e3-c737-43ee-8c7e-...

Or you can reach out to me directly at leo.green@wirescreen.ai - I lead recruiting here at WireScreen, but if I don't know the answer I'll ping our engineering folks and come back to you fast.

Quantum Rise | Chicago or NYC (preferred), Remote for the right candidate | Full-time | No visa sponsorship | https://www.quantumrise.com/

Quantum Rise is an AI-forward consulting startup serving the middle market, across multiple industries. Clearly many companies are struggling to understand how to leverage artificial intelligence in their day-to-day operations, to understand what their existing workforce now needs to know, or to understand whether they're about to be disrupted. Many have business problems which "traditional" machine learning could help with even before the current GenAI hype cycle, but for whatever reason hadn't prioritized doing so until now. We try and help getting a handle around these issues and designing outcome-driven solutions.

Agentic AI Solutions Manager: You'll work directly with clients to benchmark, train and deploy agentic systems for industry-specific problems. We're looking for someone deeply curious about agentic systems across vendors and platforms. Companies are looking for ways to leverage agentic systems to upskill their practitioners. This is a front-facing development role for someone who loves both tech and tackling real business problems. To apply, send me an email at julian.berman at quantumrise.com, mentioning HN and including your CV.

Data Engineer: You'll work directly with clients and application developers to design and build data solutions for AI-enabled applications, Lakehouses, Warehouses, and analytics that solve industry-specific problems. We're looking for someone passionate about delivering outcomes that combine best practices for deterministic data management and governance with AI functionality across tools, vendors, and platforms. Our clients need to leverage AI to solve specific problems using data. This is a client-facing development role for someone who loves to work with data technologies and tackle real business issues through genuine innovation. To apply, send John an email at john.swift at quantumrise.com, mentioning DE and including your resume/CV.

Fifty Years is VC firm that backs founders making something civilization needs. Think companies curing disease, combating the climate crisis, ending aging, accelerating science.

https://www.fiftyyears.com/

We also run a founder foundry that helps scientists and engineers start startups: https://www.fiftyyears.com/5050

We're hiring for many roles:

1/ Engineers for our product team, which builds tools to help us better support founders.

2/ A Head of Marketing, to help us help our founders better tell their stories.

3/ Former founders for the partnerships team, to help mentor our portfolio founders.

4/ Opportunistically for other roles as well.

ONSITE in San Francisco and London.

Email join AT 50y DOT com

EnsoData | healthcare, sleep, machine learning | Hybrid or Remote (Madison, WI) | Product Manager - Software Medical Devices SaaS | Full Time | $110k-$130k + bonus, stock options | https://apply.workable.com/ensodata/j/5FD6175FEB/

Sleep is vital to recharging mentally, restoring our bodies physically, and fighting off disease. Sleep is so core to our health that it's the activity we all spend most of our life doing. Yet sleep disorders are some of the most underdiagnosed health conditions on the planet, with an estimated 80% of obstructive sleep apnea patients undiagnosed and untreated

EnsoData uses machine learning, integration with pulse oximeter hardware, mobile apps, and clinician review UIs to automate sleep study scoring and give sleep clinicians tools to find and help patients with sleep disorders.

We're hiring a product manager to uncover what features our customers crave most, conduct discovery research in the sleep industry, define and prioritize product requirements, partner with engineers to ship features, and work with marketers to tell compelling product stories. You'll manage the product development process from whiteboard mockups tested with real users through to detailed specs and launch, breaking down ambiguous problems into releasable slices that bring AI-powered sleep diagnosis to more patients.

ProPublica | Director of Product Engineering | Remote (US only) or NYC | Full-time

ProPublica is a non-profit newsroom that investigates abuses of trust in the public interest. Journalism we published last year shed light on the impact of DOGE and ICE, investigated right-wing militias, told stories about the US medical system, and more. Here were our most-read stories in 2025: https://www.propublica.org/article/propublica-most-read-stor...

I'm the Senior Director of Technology. I'm hiring a pragmatic, mission-driven Director of Product Engineering, who will report to me, in order to provide more support for our product engineers who work on our publishing and data products. (This is not a reporting position.) You'll directly lead and manage a small team of engineers and help us to create and maintain great engineering processes.

More about the role here, including a direct route to apply:

https://job-boards.greenhouse.io/propublica/jobs/4623874006?...

Or get in touch with me at ben.werdmuller [at] propublica.org if you'd like to have a conversation about it.

The expected salary range for this position is $170,000 to $180,000. We cannot sponsor visas and must hire in the US. The role is almost fully remote: we have two in-person week-long summits a year.

Komodo Health | AI Platform Engineer (Senior / Staff) | Full-Time | $200-$298k + equity... | SF/NY Once-a-month-few-days / Remote US. Can sponsor.

Healthcare in the U.S. is a mess. Komodo Health is fixing that—with data. We’ve mapped the patient journey across the country to build the most complete picture of disease burden and treatment gaps. Our customers are pharma, payers, and health systems who actually want to do something meaningful with that information.

We have an exciting product, marmot, that is AI-native, both in the interface as well as in development, and want to carefully grow high productivity teams around this offering. AI integrated with Komodo's data is giving some of the most unique, real world insights any of us has seen come out of the new LLM era. Our product was just featured on Times Sqaure too! https://www.linkedin.com/posts/komodo-health_marmot-sighting...

As part of marmot, we are building an enterprise-grade AI platform, and this build out needs smart individuals who will sit at the nexus of AI Agent architectures, complex data engineering, advanced data science and messy healthcare data.

You will be an ideal candidate if you have data engineering experience as well as some experience in platform engineering, in a startup environment. We don't just want to build pipelines, we want to build AI-assisted systems that can build customized pipelines for our deployments.

This will be a small, nimble team, and we are also experimenting with our work culture as AI disrupts every aspect of it. A hunger for trying out new ideas in every aspect of work would be appreciated!

Perks will include periodic travel to SF/NY for on-site, executive coaching, etc. For the right candidate, we can also consider other perks like a 4 day work-week.

If this post sounds exciting, please email me at ramraj.velmurugan@komodohealth.com.

Important notes before you email:

1. You need to already be in the US.

2. You really need to have experience with advanced data engineering. AI experience is optional, though we will likely have to test you for your aptitude in it.

3. I have mentioned a keyword in my HN profile, include the keyword in the email (there's a bunch of people who just send emails to every address in such hiring posts). I will read every email mentioning that keyword thats sent in the next two days!

Checkly | Multiple Roles | REMOTE | Full time | https://www.checklyhq.com/

Checkly helps engineers build reliable products by unifying testing, monitoring and observability. OpenTelemetry, Playwright, and Monitoring as Code are our foundation for unifying performance and reliability. In 2024, we raised $20M in Series B funding from Balderton, CRV, and Accel to take things to the next level.

-Senior Backend Engineer (Remote, UTC-3 to UTC+3)

-Enterprise Account Executive (Remote, USA - ET, CT, MT)

-Senior Product Marketing Manager (Remote, UTC-4 to UTC+2)

See the full descriptions and apply here (and mention HN): https://jobs.ashbyhq.com/checkly?utm_source=hn

Charge Robotics | Multiple Roles | Full-time | Onsite | SF Bay Area

Hi HN! We’re a YC-backed, Series-A startup building robots that build large-scale solar farms.

Check out a video of our first system here! https://youtu.be/ZZ2fP1Y5Z2E

It turns out that construction companies literally can't build solar fast enough, so what we're doing is a crucial part of switching the grid over to renewable generation.

You’ll be a key contributor, helping bring our next generation of mobile solar factory to life.

Come work with us if you love:

* Fast-paced prototype development with software and hardware components

* Making a positive climate impact through your work

* Hacking on massive construction equipment!

Senior Robotics Software Engineer: https://jobs.ashbyhq.com/charge-robotics/b2aa347c-4738-4065-...

Senior Mechanical Engineer: https://jobs.ashbyhq.com/charge-robotics/19133a2e-f262-4f3d-...

Lots more: https://jobs.ashbyhq.com/charge-robotics

Brave Software | C++ Engineer, Filterlist Engineer | REMOTE | Full-time

Brave is building a privacy-first browser and a more transparent Web for over 100M users.

On the privacy team, we are looking for:

- C++ Engineer: Working on privacy features in our Chromium-based core engine. Link: https://job-boards.greenhouse.io/brave/jobs/7339167

- Filterlist Engineer: Working on adblocking and JavaScript fixes for websites. Link: https://job-boards.greenhouse.io/brave/jobs/7434948

We are a remote-friendly company with a very-low-meeting culture.

Contact: shivan at brave dot com

Gauge | Founding Engineer | ONSITE | Full-time

Gauge helps companies show up in more AI answers. Search traffic is shifting away from Google into AI chat, and companies are figuring out how to adapt right now. Our system delivers real-time analytics derived from millions of LLM answers, while providing an intuitive, powerful UX. We also generate optimized articles to improve our customers’ visibility, and offer an agentic chat interface over their data (think ‘Why was there a spike on 12/10?’ or ‘Which of my pages should I refresh?’).

I'm Evan, the CTO, and we're looking for engineers with strong programming fundamentals, creative problem solving skills, and a high-agency working style. You might be a good fit if you are an ex-founder, ex-founding engineer, or have worked at a Seed/Series A startup.

We primarily use Django, React, Postgres, Celery, and Clickhouse.

Contact me with your resume (and mention HN) if you're interested: evan[at]withgauge.com More details/JD also here: https://www.ycombinator.com/companies/gauge/jobs/qemTjv7-fou...

EQTY Lab | Software Engineers & DevRel | San Fransisco | Full-time

EQTY Lab is focused on emerging governance and security paradigms for AI infrastructure. Our primary focus is verifiable computing using cryptographic capabilities to identify and govern agent behavior.

We're also focused on helping the industry advance with frontier tooling. From requesting the hooks feature in Claude Code, to building our own open-source integrated capabilities such as https://github.com/eqtylab/cupcake - we will continue to explore and share the things we develop for coding agents or any frontier tooling enterprise is quickly adopting.

We're seeking software engineers across the full stack. To include,

    - engineers interested in governance tooling
    - sdk writing in TypeScript or Rust
    - or engineers with cryptographic security domain experience
    - or deeper hardware level focus (platforming on Kubernetes - confidential computing, custom firmware as it relates to GPUs).

For all of this, we're seeking experienced devrel to help us communicate and build tooling the right way.

Please email me directly: ramos@eqtylab.io

RunReveal (https://runreveal.com) | Systems Software Engineer | Austin, SF (US Work Auth required) | Full-time

RunReveal is the Security Data Platform that's building tools to help companies detect and respond to threats in their network. We're a team that values speed, quality and curiosity. Our stack is Go, NextJS (TS), Postgres and ClickHouse. We believe that companies should be able to own their security data and get value out of it too and so we've built a platform that can be deployed anywhere.

If you're into self hosting or running a homelab, or you're using LLMs to enhance your development workflow and extend your knowledge and not just regurgitate slop, or you're always looking for opportunities for self improvement, you're in good company at RunReveal.

We're especially interested in folks that have experience working with petabyte scale databases. We use ClickHouse, but similar other large scale data technologies like Iceberg, Flink, Spark, ScyllaDB, Cassandra, InfluxDB, TimescaleDB, BadgerDB etc would also be valuable.

Reach out to me via alan at the company domain and mention hn who's hiring January '26 in the subject line.

Common Prefix | Software Engineers / DevOps | Greece | Remote | Full-time

Common Prefix is a blockchain research & development company. Blockchain technologies enable large-scale economic coordination through shared, programmable ledgers. Our mission is to solve the foundational scientific and engineering challenges standing in the way of mainstream adoption, particularly around interoperability, scalability, and usability. We combine formal scientific research with production-grade engineering. Our team publishes in top-tier peer-reviewed venues and builds open-source infrastructure used across major blockchain ecosystems. We have contributed to advanced systems including Axelar, XRPL, Sui, and Flashbots, and are trusted partners to protocols building critical infrastructure.

What we're looking for:

Software engineers who can solve problems, are smart, get things done, and enjoy working on the bleeding edge, learning about cryptography, and working from first-principles.

Tech stack: Doesn't matter, we'll teach you. But we work mostly with Rust, Go, and TypeScript.

Open roles:

- Support Engineer (junior-mid): https://www.notion.so/commonprefix/Opening-Support-Engineer-...

- Software Engineer (mid): https://www.notion.so/commonprefix/Opening-Software-Engineer...

- Senior Software Engineer: https://www.notion.so/commonprefix/Opening-Senior-Software-E...

- DevOps: https://www.notion.so/commonprefix/Opening-DevOps-Engineer-2...

We offer:

- $50,000–$160,000 / year cash + stock grant + performance bonus (depends on level but not location)

- Local from Athens, Greece, or remote

- Conference participation in exciting scientific and engineering venues, 2-3 times per year

- The opportunity to work and learn from world-class scientists from major universities in the field of blockchains, cryptography, and consensus

Apply here:

https://commonprefix.notion.site/2b7bf672de828051b53cdd37811...

Blackbird | Dev Shop | Remote (US or Europe) | Contract

Blackbird builds web + mobile apps for startups and innovative companies. We work on interesting, greenfield projects, and rely on small, veteran teams who have lots of autonomy. Everyone is a remote contractor, and our work culture is low-drama and highly collaborative. No pointless meetings, no bureaucracy, no egos and lots of time spent building things.

We’re looking for senior full stack engineers / CTO consultants / data scientists. We value engineers who are strong technically as well as great communicators.

Our typical stack is TypeScript, React, Postgres, and AWS although it will vary project to project.

If you enjoy moving fast, working with great engineers, and building something from the ground up, you’ll fit right in.

If interested, reach out directly to me at vance [at] blackbird.us

Archer Aviation | San Jose, CA | iOS & Backend | Full-Time | https://archer.com

Archer is an aerospace company building an all-electric vertical takeoff and landing aircraft with a mission to advance the benefits of sustainable air mobility.

We're pushing the envelope in aviation software through applied AI. We have production aircraft, we have an operational airport, and we have a dream of a better future in the sky.

Join us if you want to build the next chapter in aviation.

Apply here and mention this post: https://job-boards.greenhouse.io/archer56?departments%5B%5D=...

Ezra | Senior+ Engineer (Full-Stack) | REMOTE (LATAM / US Eastern) | Full-time

****************************************************************

Ezra is a venture-backed startup building at the intersection of sustainable finance and artificial intelligence. We're building a platform to accelerate capital deployment into climate solutions and other world-positive investments.

I’m Rob, the CTO, and we’re looking for multiple seasoned, full-stack Senior+ Engineers (6-10+ years exp) to significantly contribute to the development and scaling of our core platform. We are specifically looking for teammates in Central and South America (LATAM) who can work US Eastern hours. This is a high-autonomy role for a proven generalist who is deeply product-focused and takes complete ownership of features from concept to production.

The Role:

Drive technical delivery of full-stack features end-to-end, collaborating with Product and Design to define requirements and ensure engineering quality.

Design and develop scalable components and APIs across our backend and frontend.

Work to integrate, serve, and iterate on model-powered features and RAG systems.

Contribute to system architecture decisions and the evolution of our infrastructure.

Stack: Python (FastAPI), Typescript, Next.js, React, AWS, Terraform, Postgres (SQLAlchemy).

Contact: Email me directly at robert+hn26@ezra.fi with your resume

Spill (https://www.spill.chat/) | Senior I Product Engineer (£84-101k) Senior II Backend Engineer (£108-121k) | London, UK (HQ) | ONSITE | Full-time

Our mission is to make talk therapy free at the point of use for as many people as possible. Right now, we're doing this by selling a mental health support product to businesses. We're a small product-focused company and were cashflow positive in 2025.

If you're interested in the mission and one of the roles, email calvin[at]spill[dot]chat with your CV

SpruceID (YC W21) | REMOTE (US-Based Preferred) | Full-Time | spruceid.com

Spruce lets users control their data across the web. Instead of users logging into platforms, we believe platforms should request to access data vaults controlled by users.

The demand for trusted digital ID is accelerating as AI deepfakes begin to destroy most of the ways we use to verify identity today. How private or secure is it to hold your driver's license or passport up to a webcam to get a bank account? Was it ever private or secure? Stable diffusion can break so much of this already. Society will need trusted digital IDs and credentials. Our mission is to allow them to be controlled by individuals, with safeguards to prevent descents into surveillance states and checkpoint societies.

We are the main implementers of category-defining initiatives such as the digital ID program for the California DMV, and the verifiable digital credentials program in Utah. We are private sector participants in NIST's National Cyber Security of Excellence initiative for privacy-preserving digital ID.

We are hiring skilled engineers who care about making a real impact in improving public services, digital autonomy, and user privacy for the world. We work closely with public sector agencies, and have high regard for public servants. We have a strong engineering and customer-oriented culture, and are not simply a SaaS product or AI wrapper. Our roles are not for the faint of heart: you will be expected to work hard and learn a lot in this role.

Our engineers are ambitious to get outcomes for our customers and their constituents. On any given day, they may write great Rust/C#/TypeScript, deal with mainframe dumps, read policy documents, respond to technical RFIs/RFPs, manage on-prem environments, implement new NFC + Bluetooth protocols in Swift/Kotlin, create CI/CD processes that enforce W3C accessibility guidelines and i18n requirements, rewrite lost specs from disassembled binaries, figure out stablecoin payments, and design new protections for public key infrastructure. It is a team effort, and people with T-shirt shaped skills are able to collaborate and learn a ton from each other every day.

We are interested in candidates who want to be proud of the meaningful impact they make for society, even if it takes time to get right. This is not the right job for someone who wants to "join a cool new AI startup" that implodes or exits in under a year.

See our roles here: https://jobs.lever.co/sprucesystems/