foam.ai | Founding Engineer | $180-$300k | 0.25%-2% | SF (onsite) | Full Time

foam is building a new observability stack that captures, traces, and links everything, purpose-built for AI. We use this foundation to feed complete context into AI to automatically identify and root-cause breakages across entire systems.

* We’re a five person team. Perla (CEO) was the 5th engineer in the consumer facing team at Affirm (pre-IPO).

* We've raised $9.9M in seed funding from Khosla Ventures, Max Levchin, The House Fund, and South Park Commons

* We’ve got active betas at Orb, Braintrust, Plaid & TogetherAI.

We’re looking for engineers who want to take point and work hand in hand with Perla on one or more of our core systems:

1. The Telemetry Engine - Think of this as a major extension of OTEL custom built to capture signals that have historically been inaccessible to humans.

2. The Root Cause Analysis Engine (aka Solver) - This is currently an agent swarm, but evolves every week in search of better and better root cause analysis.

For a bit more on the role, check out: https://foam.ai/careers

If putting an end to awful on-calls and building a system that can deliver self-healing software is exciting to you, send an email to luke -at- foam dot ai with your resume and mention you came from HN.

Pump Up | https://pumpup.com | React Native (Expo) Engineer | Remote | Full-time

We’re a small, technical founding team in based in SF building an assistant for tradespeople — electricians, plumbers, contractors. Our app turns job site voice notes and photos into structured job records, quotes and invoices. We’re seed-funded, ship fast, and spend a lot of time with users in the field, building practical AI that saves people real hours every week.

We’re hiring a React Native engineer to own big chunks of the product across iOS, Android and Web. You’ll work directly with the founders and take lead on the mobile client. If you like autonomy, fast iteration, and shaping product you’ll fit right in.

Experience with React Native Web, native media pipelines, or AI workflows is a bonus. The role is remote, but some overlap with PST is important. Compensation ranges depending on location.

See https://pumpup.com/careers or email me directly at Email is hidden if you want to build tools that make real work easier.

Freeform (http://freeform.co ) | Software Engineers | Full-time | Onsite | Hawthorne, CA (Los Angeles County)

Freeform is deploying metal 3D printing factories at global scale and setting a new frontier in manufacturing. With AI, GPUs, and FPGAs working in tandem, our system monitors and corrects every microsecond of the process, delivering a level of precision, speed, and quality that’s never been possible—until now. This isn’t just an improvement; it’s a leap forward in how complex metal parts are made, with the ability to revolutionize industries like aerospace, defense, automotive, energy, and beyond. We are backed by top VCs including NVIDIA’s NVentures, Founders Fund, and Threshold Ventures.

It’s a small, tight-knit team and you’d have the opportunity to own significant and impactful greenfield projects throughout the entire development lifecycle and much more. Our software team comes from the likes of Google, SpaceX, and Apple, and believe in taking a first principles approach to solving hard problems.

A glimpse into our software landscape - https://youtu.be/nfwqarukd5i?si=mp17qdkbxvf8qpzn

Our feature in TechCrunch! https://techcrunch.com/2024/10/22/ex-spacex-engineers-land-1...

+ Lead Software Engineer (Full Stack Enterprise) - https://grnh.se/btzdox7q3us

+ Senior Software Engineer (Edge Data & Telemetry) - https://grnh.se/3qf4q3bd3us

+ Software Engineer (Edge Data & Telemetry) - https://grnh.se/lm2n1a5h3us

Staff + Principal Product and Distributed Systems Engineers (Multiple) | Base: $200,000 - $250,000 USD

Want to work full-time, in-office in New York City, with some of the worlds brightest minds? Not to mention tons of perks: Equity/Bonuses/Unlimited PTO, etc.

Our new stealth startup just landed $15M in funding and is Looking for top nerds who live for ai-security battles and low-latency, high-throughput challenges and might be intrigued by a small, elite team with founding-level ownership…

We move fast are backed by top-tier investors and leadership who believe this will redefine how organizations and people protect themselves. It’s the kind of environment where deeply technical engineers get to build mission-critical systems with massive real-world impact from day one.

Please reach out directly for more info: https://www.linkedin.com/in/christina-kayler/

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.

Rapport | Founding AI Engineer + Founding Data Engineer | REMOTE (US) | Full-time | USD$160-220K+

Rapport is fixing healthcare's broken payment infrastructure. Hospitals lose billions annually to opaque payer rules and outdated contracts. We're an AI driven platform that ingests contracts, claims, and policies at scale, transforming them into real-time pricing intelligence to help get providers paid what they deserve.

We are backed by top tier investors and already have one of the largest RCM operators in the country as our development partner. Founded by a healthcare tech veteran with two prior exits. This is a chance to be a true founding team member with meaningful equity and direct impact on product and company direction.

Role 1: Founding AI Engineer – Claims Pricing Intelligence Build production pricing engines that transform messy healthcare data into accurate claim prices. Think of it like playing a complex game: interpret intricate payer rules, combine them into working logic, and validate at scale. Design data pipelines for PDFs/CSVs/APIs, create business logic combining rules based systems with ML validation, and build explainable systems where every decision is traceable. Thanks to our partnership, you'll work with massive real world datasets from day one. Stack: Python, SQL, FastAPI, LLMs and Agentic frameworks.

Role 2: Founding Data Engineer Architect our data platform from scratch. Build fault tolerant pipelines using Databricks that handle diverse sources, design normalization layers for healthcare data, and implement observability for production reliability. First data hire, you'll shape our entire data strategy. Stack: Python, SQL, Databricks, Azure/AWS, Airflow/Prefect.

Rapport is a remote only company with quarterly in person sessions. Significant equity + competitive compensation.

Apply: Email is hidden with resume or LinkedIn.

Please note we are unfortunately unable to sponsor visas or hire candidates outside of the US at this time.

Impinj | Remote with occasional travel to Seattle, WA | Full time | https://www.impinj.com/

Impinj is a leading RAIN RFID provider and Internet of Things pioneer. We’re inventing ways to connect every thing to the Internet — including retail apparel, retail general merchandise, healthcare items, automobile parts, airline baggage, food and much more. With more than 100 billion items connected to date, and multiple Fortune 500 enterprises around the world using our platform, we solve for a better understanding of our world. If it’s a thing, we’re working to connect it.

Our team owns engineering and design of the cloud platform that will open RFID to thousands of new companies and use cases by making RFID adoption 100x easier than it is today. We're building a high-caliber software team from the ground up with uncompromising standards for quality, velocity, and close, cross-functional collaboration. You'll work across the full technology stack (frontend, backend, mobile, databases, event sourcing, MQTT, PKI/certificates, IoT) alongside engineers from diverse disciplines including design, firmware, and silicon.

If you're excited to work with a phenomenal team and make high-impact contributions to a thoughtfully built product that solves big, real-world problems, please check out the job description in the link below.

https://grnh.se/8tipsx3z5us

Culture Biosciences | https://www.culturebiosciences.com | Senior Software Developer (Bioprocess Automation) | Hybrid South San Francisco, CA | $180k–$210k + equity

We build cloud-connected bioreactor systems that let biotech companies design, run, and analyze upstream bioprocess experiments faster. You’ll own software that automates and controls bioreactors, instruments, and analyzers, working across the stack from embedded/edge control loops (pH, DO, temperature, agitation, feeding strategies) up to cloud-native data and workflow apps.

We’re looking for someone with ~8+ years combined experience in bioprocess/automation + software engineering, strong Python and Docker/IaC skills, and experience interfacing with physical systems. You’ll collaborate closely with scientists, process engineers, and hardware teams, and mentor other engineers on a small, multidisciplinary team.

More details & apply: https://www.culturebiosciences.com/careers?gh_jid=7358174003

Feel free to reach out to me if you have questions jonathan.meed @ company domain

SentiLink | https://www.sentilink.com/ | Engineering & Data Science | REMOTE, HYBRID, and ONSITE (USA & INDIA) | Full Time

At SentiLink, we stop identity fraud at scale. Our products protect banks, fintechs, marketplaces, and leading financial institutions from synthetic identity fraud, identity theft, and emerging threats — analyzing millions of applications while keeping real users moving fast.

We’ve seen tremendous traction and are growing extremely quickly. Our real-time APIs have helped verify hundreds of millions of identities, starting with financial services and rapidly expanding into new markets. SentiLink is backed by world-class investors including Craft Ventures, Andreessen Horowitz, NYCA, and Max Levchin.

SentiLink supports a variety of ways to work, ranging from fully remote to in-office. We operate as a digital-first company with strong collaboration across the U.S. and India. We maintain physical offices in Austin, San Francisco, New York City, Seattle, Los Angeles, and Chicago in the U.S., and in Gurugram (Delhi) and Bengaluru in India. If you’re located near one of these offices, we would love for you to spend time in the office regularly. Some roles are hybrid or in-office by design. For example, our engineering team in India works primarily from our Gurugram office.

We’re a small, high-impact team solving one of the most interesting and adversarial problems in fintech: how do you build systems that reliably determine whether a real human is on the other side of a financial transaction?

We’re hiring across Engineering (Full-stack and Infra) and Data Science / ML roles. Hiring at Manager/Director level as well as mid-level/Senior levels.

We’re language-agnostic and hire for fundamentals. Across the team you’ll see: • Python, Go, Rust, Scala • PostgreSQL, Snowflake • Kafka, Redis • Terraform, Kubernetes • ML: XGBoost, PyTorch, Feature stores, real-time scoring pipelines

If you love solving complex distributed systems challenges, building customer-facing ML products, or working on detection systems that must be both high-precision and low-latency, you’ll fit right in.

Roles are here: https://jobs.ashbyhq.com/sentilink?utm_source=hacker_news

If you have questions, feel free to reach out directly at liz.woodfield at sentilink dot com.

ParadeDB | https://paradedb.com | SF Onsite + Remote | Full-Time | Rust Database Engineers

ParadeDB is an alternative to Elasticsearch built on Postgres. We're building a Postgres extension in Rust that offers a new index type optimized for full-text search and aggregate/analytics workloads. We solve three problems with Elasticsearch today:

- Lack of read-after-writes guarantees

- Lack of JOINs

- Infrastructure complexity & cost due to syncing Postgres and Elastic.

We're open-source, and our repository is available at https://github.com/paradedb/paradedb. We're a Series A team of 8 distributed across the US and Canada. Most folks on our team have 10+ years of experience in database internals at companies like Twitter, MongoDB, Oracle, Instacart, etc.

You can find our roles and the profiles of our team members here: https://paradedb.notion.site

If you know Rust and/or have experience working on DB internals and want to work on cool systems problems, shoot us a note. We hire with conviction, have lots of room to grow, and exciting technical problems to solve. My email is Email is hidden.