PhysicsX | Principal AI Engineer | London / NY / Remote | Full time | physicsx.ai

We're building an AI-native platform that turns physics simulations from days-long jobs into millisecond inference. Think: training deep learning surrogates on CFD, FEA, thermal data, and Large Physics Model (LPM) frontier research so engineers can explore thousands of design variants in a single session — across aerospace, semiconductors, energy, and automotive.

You should have the scar tissue of running agents in production and strong opinions on what the future looks like.

We're ~170 people, raised $135M Series B, and backed by General Catalyst, Atomico, Siemens, and Applied Materials. The team includes people from F1, SpaceX, Google, Palantir, and Tesla.

If this sounds interesting: https://job-boards.eu.greenhouse.io/physicsx/jobs/4804769101

Or email me directly: joel.schwarzmann [at] physicsx [dot] ai

CLEAR | Senior/Staff Software Engineers, Staff/Lead iOS Engineer, Infrastructure Engineers| NYC Onsite (4-5 days in-office w/ free catered lunch daily) | https://www.clearme.com/

CLEAR is building THE secure identity company of the future. Our mission is to make experiences safer and easier—physically and digitally. With more than 38 million Members and a growing network of partners across the world, CLEAR's secure identity platform is transforming the way people live, work, and travel. Whether it’s at the airport, stadium, or throughout your everyday life, CLEAR unlocks the magic of frictionless experiences.

If interested, apply here --> https://grnh.se/e4e5dc881us

Radar Labs | Software Engineers (SRE, data platform, backend, full-stack, mobile) | Remote (US), NYC | Full Time | https://radar.com

- Radar is the geo-location dev tool

- Doing 1B+ API calls per day

- Our main languages are Rust and TypeScript, we also use mobile and offline pipeline languages (Python, Scala, and Terraform).

- We're based in NYC with our HQ in Union Square and remote friendly (US)

Interesting things we're working on:

- HorizonDB, our Geospatial database written in Rust

- Precise indoor location more accurate than iOS and Android leveraging Ultra-Wideband, other mobile sensors and ML.

- Extracting raw map data from satellite maps and the web leveraging ML and AI

- Anomaly detection to identify spoofed locations

- Mobile infrastructure that automatically configures itself optimizing battery-life and location accuracy for different use-cases over time

- Multi-Region AWS K8s deployment, 99.99%+ availability

- Frontend tools to visualize and debug location data at scale

Check out our jobs page here: https://radar.com/jobs#jobs If you have any questions, feel free to reply here or you can e-mail me at tim@radar.com

Neon Health | AI in healthcare | Hiring Eng, Product & Growth | SF, Remote (North America)

- Senior Backend Engineer | SF, Remote (North America) | Full-time | $170-225k + equity - Product Manager | SF | Full-time | $121-177k + equity - Account Exec | SF | Full-time | $120-350k + equity - Growth Specialist | SF | Full-time | $105-$137k + equity

https://neonhealth.com/

We’re mission-driven capitalists: making life-saving drugs more accessible, and building a $200B+ company on the scale of Palantir or ServiceNow.

Traction: profitable and growing fast. Landing 7+ figure contracts to enterprise healthcare customers.

Team: built by exited founders, YC & MIT alum, ex-Tesla, ex-Google engineers.

Top investors: funded by elite Silicon Valley VCs who've backed unicorns like DoorDash, Lyft, and Mammoth Biosciences. And strategic healthcare investors with deep industry connections.

Outsized impact & opportunity: work at the intersection of agentic AI, healthcare transformation, and life-changing patient outcomes.

If you want to work on a team of A-player athletes, doing the best work of your career, and helping get life-saving drugs to the people who need them, apply here:

https://neonhealth.com/careers (and make sure to mention HN!)

RINSE | REMOTE or San Francisco, Los Angeles, Chicago, Boston, New York City, New Jersey, Seattle, Austin, Toronto, or Washington DC | Software Engineer | Full-Time | Salary: $80k-$200k USD | https://www.rinse.com

Rinse provides dry cleaning and laundry delivery services to customers in twelve metropolitan areas in the US and Canada. We have sophisticated logistics optimization software, a polished consumer product, and firm business fundamentals. We're now over a decade old - this is a stable, yet consistently growing and innovating, company.

Our engineering team is distributed across the United States and internationally, and has been entirely remote for years now, but a desk can be provided in the above cities if you'd prefer.

We're open to both newly-graduated engineers or more senior engineers, provided they meet our bar. We're particularly interested in true full-stack engineers, with strong React / Typescript / CSS skills to complement comfort in a Python / Django environment. We're also seeking engineers with experience leveraging AI to automate complex operational processes.

This season, we're particularly interested in new grads or junior engineers, to round out the team.

You will join a high-caliber team where collaboration, honesty, and open communication are at the core of everything we do.

Search term bingo: Logistics, Django, Python, Optimization, React, React Native, Postgres, Mobile Engineer, Automation, Delivery, OR-tools, Forecasting

Back by Sequoia Capital, Peregrine is the operational AI platform powering decision making and operations SF / NYC / DC | In-office 4 days | $130,000 - $275,000

[Leadership] Engineering Manager (SF) https://grnh.se/s7yxefzs5us

8+ yrs - Staff SWE, AI (SF) https://grnh.se/cq0caps45us

8+ yrs - Staff SWE, Product Security (SF / NYC) https://grnh.se/b2kbmt3j5us

Senior Infrastructure Engineer (UK) https://grnh.se/6c1kjk525us

SWE, AI (SF, NYC, DC) https://grnh.se/yl9kuqrg5us

Sr Software Engineer (SF, NYC, DC) https://grnh.se/gwf63pot5us

Sr Product Designer (SF / NYC) https://grnh.se/s96svypy5us

Sr Design Engineer (SF) https://grnh.se/z8ev1cgu5us

Product Manager (SF) https://grnh.se/kyvpq2ww5us

Tech Recruiter (SF/NYC/ DC) https://grnh.se/rtj4fv3h5us

Espresso AI | Staff ML & Staff Infra Engineers | Brooklyn or San Francisco | Full time

We're using LLMs to build neural optimizers, neural scheduling systems, and neural workload tuners. (If you're ex-Google, you can think of it like Borg powered by LLMs.)

Today we use ML to make data warehouses and spark jobs more efficient. We're hiring staff ML engineers to train models that can understand how much compute a job needs, how it scales to larger machines, whether a machine can run more jobs, and so on; and staff infra engineers to take those models and deploy them on real-world production systems.

If this sounds cool, please email me: ben [at] espresso [dot] ai

Oklo | Remote (US) or Santa Clara or Brooklyn | Full time | https://oklo.com

Join us in pioneering the next generation of nuclear reactors! You'll leverage your software skills alongside nuclear engineers to model, simulate, design, and deploy advanced fission power technology. You will work at the forefront of the nuclear industry, developing novel techniques to reach new levels of safety, efficiency, and resiliency. Come be a part of powering the future with advanced fission power plants to provide clean, reliable, affordable energy.

We are hiring for:

- Software Engineer: https://job-boards.greenhouse.io/oklo/jobs/4018702004

- Senior Software Engineer: https://job-boards.greenhouse.io/oklo/jobs/5739483004

- Software Engineer (Infrastructure): https://job-boards.greenhouse.io/oklo/jobs/5784826004

- Software Quality Assurance Lead: https://job-boards.greenhouse.io/oklo/jobs/5480416004

See more opportunities here: https://job-boards.greenhouse.io/oklo

Please mention Hacker News in your cover letter!

Veritus | Full Stack Developer | San Francisco (Hybrid)

Veritus is reinventing loan servicing and debt collection with AI. Our platform enables lenders, servicers, and collections agencies to spin up, personalize, and A/B test AI agents across voice, email, SMS, and chat, while we ensure compliance.

$180k-$250k + equity + benefits

Apply: https://www.ycombinator.com/companies/veritus/jobs/pfkev5c-f...

Temporal Technologies | Multiple positions in United States - WORK FROM HOME | FULL-TIME |

Temporal offers an entirely new way to build scalable and reliable applications. Temporal enables developers to focus on writing important business logic, and not on managing state or worrying about the underlying infrastructure. Backed by top VC firms, we have built a team of professionals from various successful start-ups and well-known technology companies.

We're looking for senior level engineers for multiple roles - https://www.temporal.io/careers

FEATURED ROLES:

Staff Software Engineer - Cloud Capacity → https://grnh.se/a0hc6o6h7us

Staff Software Engineer, Replication Foundations → https://grnh.se/kyeg4nns7us

Senior Software Engineer, Cloud Enablement → https://grnh.se/2wls4ysb7us

Senior Software Engineer, Release Engineering → https://grnh.se/g7ybar8w7us

Senior Engineering Manager, Cloud Enablement → https://grnh.se/y8lod82n7us

Staff Software Engineer, AI SDK → https://grnh.se/gb3g38ho7us

Staff Software Engineer, Reliability → https://grnh.se/toxfr5577us

Staff Software Engineer, DevProd (Infrastructure Observability) → https://grnh.se/wik4wjti7us

US benefits include: Unlimited PTO, 12 Holidays + 2 Floating Holidays, 100% Premiums Coverage for Medical, Dental, and Vision, AD&D, LT & ST Disability and Life Insurance , Empower 401K Plan, Additional Perks for Learning & Development, Lifestyle Spending, In-Home Office Setup, Professional Memberships, WFH Meals, Internet Stipend and more! Benefits outside the United States vary by country.

Oscilar.com | Sr/Staff Software Engineers & PM | REMOTE (US/Canada/Brazil/Poland/UK) | Full-time AI Risk Decisioning™ platform that helps organizations manage onboarding, fraud, credit, and compliance risks Open roles: - Sr./Staff Java Backend Engineer (Brazil/North America) - Sr./Staff Infrastructure Engineer (Europe) - Staff GenAI Engineer - Staff Web SDK Engineer - Full-Stack Engineer - AI Agent Platform - Product Manager

Apply at: https://jobs.ashbyhq.com/oscilar?utm_source=HackerNews

Discord | Senior Software Engineer - Database Infrastructure | SF Bay Area (Hybrid)

Tech stack: Rust | ScyllaDB | k8s | Python | Postgres | Elasticsearch | Terraform

Role: Build and operate distributed database systems and data platform services that store all of the data for Discord's 200M+ users.

We're solving interesting problems around performance, reliability, and scalability at one of the largest communication platforms. Looking for strong infrastructure and distributed systems experience, familiarity with databases like Cassandra/ScyllaDB/Postgres, and comfort working in Rust or similar systems languages.

https://discord.com/jobs/8200328002

Skydio | Robotics / Drones / Cloud / Web engineers | San Mateo CA, Zurich CH, or Hybrid | https://www.skydio.com/careers

Skydio is the leading U.S. drone company and world leader in autonomous flight. Our drones are used for inspecting the energy grid, de-escalating life and death scenarios in public safety, inspecting bridges, giving soldiers better situational awareness on the battlefield, search and rescue missions, and more. We serve the core industries that our civilization runs on and have life-saving impact.

If you’re interested in being a core member of a 200+ person world-class engineering and research team that is defining the future of a major emerging industry,

We’re looking for a diverse combination of engineers, researchers, and managers with strong SW skills and experience across complex products. We’re particularly interested in people with robotics, web, deep learning, game dev, streaming or cloud experience.

Autonomy Engineer, Fixed Wing Planning & Controls https://www.skydio.com/jobs/20754382-05e7-4cb6-a0f9-0daf9338...

Autonomy Engineer, Deep Learning Model Acceleration https://www.skydio.com/jobs/cd6d8410-419b-4713-8d4d-7eb72b13...

Senior Software Engineer, Full Stack https://www.skydio.com/jobs/5655fbe3-66b0-4951-afdc-3b67f71e...

I am a Senior Director of Engineering there and a YC S18 alumni, you can reach me at { vincent dot lecrubier at skydio dot com } but please apply online first!

Ascertain | NYC (Hybrid) | Senior Product Engineer | Python, FastAPI, TypeScript

We’re building software to fix messy, real-world healthcare workflows—the kind that don’t fit neatly into SaaS.

This is a high-autonomy role for engineers who want ownership. You’ll work directly with customers, turn ambiguous problems into working systems, and ship end-to-end. We’re looking for someone who’s shipped real systems, is comfortable with ambiguity, and enjoys solving problems beyond the code.

$130K–$175K + equity + benefits

Apply: https://www.ascertain.com/careers?ashby_jid=b0c3a042-99a1-40...

Locket | https://locketcamera.com | Hybrid, San Francisco + Remote | Full-time

Locket is the fastest-growing social app among Gen Alpha and Gen Z.

What if social media actually made you happier? Unlike other platforms focused on entertainment and endless scrolling, Locket helps you connect with the people who really matter: your best friends.

- 10M DAU, 100M downloads, $10M+ annual run rate

- Help define how AI fits into social media

- Ship to 10s of millions of active users from day one

- Scale the defining social app for the next generation

We’re hiring:

- Backend engineers

- Social media manager

Learn more and apply here: https://locket.camera/jobs

Cologne, Germany | UMH | Product Engineer | Full-time | 55 - 85k EUR | ONSITE (part remote)

Hi, Alex and Jeremy here from UMH.

8 years ago, Jeremy was absolutely frustrated with the status quo of data infrastructure in manufacturing. Companies paid millions per year for "shitty 90s software" and are still doing that today, when there is much better software out there for open-source. So we decided that we can do this better, first founded a System Integrator, realized most of the tasks in setting up and maintaining a data infrastructure can be standardized, and decided to found the currently VC-backed UMH, which is built on open source software and is open source itself.

What we're actually building: We build and scale a real-time data platform that runs hundreds of Benthos pipelines inside a single Docker container (UMH Core), processing millions of industrial messages that control actual production processes.

Plus a local-first user interface (Management Console) where both non-technical factory workers and power-users/developers can work together. And yes, we care about UI in enterprise/industrial software.

https://jobs.umh.app/

Findigs | Full-time | NYC | 3x/week in office (M,T, Th) | findigs.com

At Findigs, we’re transforming the rental experience — making it fairer, stress-free, and more convenient by changing the fundamentals of renting.

We build high-scale applications that streamline renting for millions. Our modern tech stack includes Python, Typescript, Node.js, React, and scalable cloud infrastructure.

We foster a collaborative culture where engineers have high ownership and autonomy, taking features from concept to deployment.

Join our sharp, supportive, and mission-driven team in our newly renovated SoHo/NoHo office.

Open roles:

Lead Software Engineer (https://jobs.lever.co/findigs/1ea92751-1c85-4eb6-84b4-86c529...)

Senior Software Engineer (https://jobs.lever.co/findigs/3b39616d-223f-4326-a500-f804c3...)

Mid-Level Software Engineer (Mid-Level) (https://jobs.lever.co/findigs/5e865781-244f-4e4f-b7bd-e09973...)

Competitive Base Salary plus Pre-IPO Equity

401k Matching up to 4%

Unlimited PTO

Lunch in office every day, home office setup stipend, monthly gym stipend

Assembly | Founding Engineer | New York City, Onsite | Full-Time

Assembly is a vertically-integrated, technology-native holding company that acquires industrial real estate. We take an AI-native approach across the full surface area of our business; data-based geography selection, owner outreach, due diligence, deal structuring / scenario analysis, property & tenant management, and more. Our intention is to build one of the largest real estate companies in the world, and to be the most technology-native real estate owner in history.

We are hiring a Founding Engineer (Full-Stack) to design and build our proprietary technology stack from inception. You will own the development of our tech stack and have significant autonomy to build. Experience with Python, React / TS, LLM APIs, data pipelines, FastAPI, PostgreSQL, web scraping and entity resolution are relevant.

To apply, please reach out to swc[at]assemblygh.com.

MongoDB | Senior Developer Advocate | REMOTE (Dublin, Ireland) | Full Time

My org is hiring for multiple openings for Senior Developer Advocate roles. We aren't just doing "content." We are the technical "tip of the spear" for MongoDB's largest global accounts.

- The Scale: You'll be solving data architecture and performance bottlenecks at a scale very few engineers ever get to see. - The Impact: It's incredibly rewarding to optimize systems for household-name companies and see the immediate ripple effect. - The Culture: You'll join a tight-knit group of MongoDB experts who actually enjoy collaborating. - The Mix: This is a high-engagement role.

There are multiple open positions:

For significant travel across the UK/Europe (and occasionally Asia) to work face-to-face with devs, balanced with deep-dive technical work. Apply at https://www.mongodb.com/careers/jobs/7241758

For mostly remote, apply at https://www.mongodb.com/careers/jobs/7495485.

If you have 5+ years of experience in consulting/SA/DevRel and want to bypass the recruiter screen, contact Hubert directly: https://www.linkedin.com/in/hubertnguyen/ or message me directly @mongodb.com

Conductor | San Francisco, ONSITE | Full-time

Conductor is an app that lets you run a team of coding agents on your Mac. We've grown 10x since January, and just yesterday we announced our $22m Series A. We're a small team (four people) and we're looking for exceptional software engineers and designers to work with us in SF!

https://www.conductor.build/join-us