Vantage | Senior/Staff Software Engineers | NYC and Remote | Full Time

Vantage is an a16z-backed FinOps / Cloud Cost Management platform that helps 15,000+ organizations globally like Block, Vercel, Temporal, Rippling, FanDuel, CircleCI, etc manage their infrastructure costs. We are a ruby/rails shop and if you love infrastructure, it's a very interesting role as our customers are others like you looking to manage their infra spend.

We also have a lot of exciting projects right now for AI/Agent workflows - basically an agent that can auto-remediate cost related issues on behalf of our customers. We're a well funded Series A company and [backed by a16z, Scale venture partners and founders of Cloudflare, DigitalOcean and Segment]. The company is between 50-75 people today and scaling up quickly.

We're headquartered in NYC but US-remote friendly (sorry, we can't handle international at this time).

Website: https://vantage.sh/ Learn More: https://www.vantage.sh/careers

MONUMENTAL | https://www.monumental.co/ | Amsterdam, The Netherlands | Full Time | Onsite

We make robots that autonomously construct buildings. We are currently developing and manufacturing our autonomous bricklaying system in the beautiful centre of Amsterdam. And our robots are already earning real revenue operating on construction sites all over the Netherlands.

We're looking for experienced FULL-STACK ENGINEERS who can help us solve problems like:

- Data sync and analytics queries across a fleet of robots (that can be offline for hours at a time)

- Rapid deployment and iteration of experimental software changes across firmware, control software and UI

- Modelling buildings in code and finding the right UI for operators to edit them

Check out the progress we've already made on Atrium, our operating system for robotics: https://www.monumental.co/atrium

We're rapidly scaling up operations and we need experienced, generalist engineers who can build the systems that manage all of that complexity. If you think that 'full-stack' could reasonably mean debugging firmware, mixing buckets of mortar _and_ writing React components, we are looking for you. Robotics experience not required!

https://www.monumental.co/jobs

Puma.tech | Remote-first with PST overlap | iOS/MacOS, Android, Ai/ML, Growth | https://puma.tech

Hi all, I’m Yuriy, founder of Puma.tech. Previously worked as software engineer & developer advocate at Cloudant (YC S08, Acq. by IBM), Meteor (YC S11), Parse (YC S11, Facebook/Meta), and explored AI/ML (computer vision for self-driving cars).

We have two products:

1. Puma iOS & Android – browser with built in LLMs & Wallets. Private by design.

2. Puma AI app for Mac – ChatGPT/Atlas, but with ability to pick different model providers and fall-back to local-first ones for data privacy.

Would love your help building and growing both.

We value Optimism, Kindness, Curiosity, Speed and Grit.

Open Roles: Eng (iOS/MacOS, Android, Ai/ML, Browser Extensions), Based Social Media Intern; Internships: Eng, Design, Growth

We’ve raised a few rounds from some of the best builders in crypto and ai:

Protocol Labs (YC S14), Chris Larsen (Ripple), Anatoly Yakovenko (Solana), Illia Polosukhin (NEAR Protocol), Sridhar Ramaswamy (Snowflake CEO, Neeva, Greylock), Jason Warner (poolside.ai, ex-GitHub CTO), Don Ho (Orange DAO, Quantstamp W18), Evil Rabbit (Vercel), John Phamous (SF Compute) and other amazing builders.

How to Apply: email careers+hn [at] puma.tech with your GitHub, a note on what you're most proud of building and what you'd like to build next.

Thank you!

Ascento | Zurich, Switzerland | Full Stack | https://www.ascento.ai

Ascento develops autonomous security robots that patrol outdoor areas to detect and report. All in support of security guards. We stay away from conflict, just robots driving circles around buildings in remote boring places. The technical challenges however, are far from boring.

We are looking for a full stack engineer to join as a core member of the off-robot software team. This is the software that plans, configures, operates and creates insights from data collected from the robots. You would work across the whole cloud-stack, consisting of Frontend (React), Backend (Typescript / Go), Infra (Terraform / AWS / GCP).

The cloud software team is still small, meaning you get a chance to help set priorities, guide long-term architectural direction and figure out how to best help our users. We celebrate pragmatism, we work hard to make simple systems and we help each other to hyperfocus.

Sounds like the place for you? Drop an email to sijmen@ascento.ai. I'm curious to read what about this ad caught your interest.

Vibe Kanban (YC S21) | Rust + TypeScript | Open Source | London, UK (onsite) | Full-time | £80–120k + 0.5%

We're building the platform for engineers who spend most of their time planning and reviewing code written by AI. We’re hiring for two senior roles:

Frontend (TypeScript, React): https://jobs.polymer.co/vibe-kanban/36855?source=hn

Backend (Rust): https://jobs.polymer.co/vibe-kanban/36873?source=hn

The project is open source — check it out here: https://github.com/BloopAI/vibe-kanban

Shamrock ai | Senior Backend Engineer | Hyderabad / Shillong, India | Full-time | Competitive salary + early equity

We’re building Service as a Software for enterprise transformations — starting with SAP S/4 HANA migrations for Fortune 500 companies. Our vision is to catalyze enterprise evolution worldwide - making business transformation intuitive, and autonomous through Agentic AI

We’re already live at a F100 AI hardware company + expected contract from a F20 healthcare logistics company.

Founded by a team with the right mix of deep expertise and AI know-how to achieve this vision: - Anuraag, ex-YC founder, IIT Madras & Stanford GSB - Sarat, Testing services pioneer who’s sold over $900M in enterprise programs - Mick, former CIO of McKesson

Tech: Go / Node.js / Python / SQL / SAP / AWS

Apply if you: - Have 5+ years building and deploying scalable backend systems - Love 0→1 product work and solving complex engineering problems - Enjoy working with big data, distributed systems, and AI-driven tooling - Can balance pragmatism and technical rigor - Want ownership, autonomy, and real customer impact

Interested? Email anuraag@shamrockus.ai — these go straight to the founder.

AllSpice | https://allspice.io/ | Boston, MA / SF Hybrid or Remote | Full time (US timezones) | Mid/Sr./Principal/Staff | Golang, Vuejs, Rust, Python

At AllSpice, we're building the future of hardware development and collaboration, applying modern software design principles to the hardware industry with design review, automated test, and AI (think GitHub + copilot for hardware). AllSpice is unlocking the next generation of smart vehicles, IOT devices, rockets, medical devices, robotics, and much more.

Read more about our latest Series A announcement in TechCrunch (https://techcrunch.com/2025/06/23/allspices-platform-is-the-...)!

We have a highly capable, tight-knit, remote-first team with a flex office in Somerville, MA and SF. We strongly value continuous communication and personal development. See more on our careers page https://allspice.io/careers

We’re hiring primarily for:

Director of AI and Data Architecture - You'll own and improve our data architecture for our AI product for circuit design. You should have proven experience owning major components of an agentic production software architecture. This is a "player/coach" role, in charge of the architecture and supporting roadmap with our PM, but also mentoring, reviewing and at times implementing new AI solutions. https://jobs.ashbyhq.com/allspice/c1dc606d-88d3-4662-985b-70...

Sr/Principal SW (Go, TS) - You'll take a major ownership stake in our full-stack web application, which includes collaborating closely with Product Management to architect & implement complex data rendering, user management, and novel features for hardware engineering teams. https://jobs.ashbyhq.com/allspice/3a80d480-ee07-481d-b5c3-10...

Sr/Principal SW (Python) - You'll take a major ownership stake in our actions automation feature. This includes working closely with Product Management to implement a baseline of automation scripts for ECAD data (see some examples here: https://hub.allspice.io/Actions/), developing better integrations into AllSpice platform, and supporting our AllSpice AI agents.

Product / Growth Lead - Define how we position, launch, and grow AllSpice’s products. You'll shape our brand voice, craft compelling narratives, and create content that inspires electrical engineering leaders and the broader hardware community. https://jobs.ashbyhq.com/allspice/7ffd19c6-1e80-41f5-bcea-29...

Tech Stack: Docker, Terraform, GoLang, Rust, Python, Vue, Typescript, Python

Please include any relevant open-source projects or portfolio in your application.

Zest AI is a ~150-person B2B SaaS company based in Los Angeles. We build software that helps financial institutions make better, fairer lending decisions using machine learning.

We’re hiring the following roles before the end of the year — all remote (US) or hybrid in Los Angeles. Candidates must be currently based in the United States.

Senior Software Engineer: https://www.linkedin.com/jobs/view/4319165179

Data Scientist: https://www.linkedin.com/jobs/view/4283089469

Machine Learning Engineer: https://www.linkedin.com/jobs/view/4304054095

If you’re interested in learning more, please apply directly and follow up with our team at talent@zest.ai

Posted directly by the Zest AI hiring team (not a recruiting firm or job board)

Recombine | Principal Software Engineer | Remote (UK/EU) | Full-time | https://recombine.ai |

Recombine builds advanced conversational AI agents for Europe's banks, fintechs and marketplace companies.

We're hiring a Senior Solution Engineer, a Principal Software Engineer and a Senior Infrastructure Engineer.

Tech we use: TypeScript, Node.js, Python, Terraform. We are cloud-agnostic.

We don’t sponsor visas at the moment.

See all of our opportunities here: https://recombine.ai/careers/

foam.ai | Full Stack Founding Engineer | SF (onsite) | Full Time

At foam we’re building the first telemetry and production system designed for LLMs, giving them complete visibility into and control over running software. Today we’re making money by fixing bugs as they happen, tomorrow we’re the data layer for all production observability tooling.

* We’re a six person team. Perla (CEO) was the 5th engineer in the consumer facing team at Affirm (pre-IPO). Shawn Krisman (CTO) was an early engineer at Yelp, Reddit, Patreon and architect at Affirm (pre-IPO).

* We've raised $8.4M in seed funding from Khosla Ventures, Max Levchin, The House Fund, and South Park Commons

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

If being #7 is exciting; reach out: send an email to luke -at- foam dot ai with your resume and mention you came from HN

Sanity, New Venture | Senior Data Engineer/Applied Data Scientist/Senior Full Stack Engineer | SF Bay Area hybrid (2 days/week in the office) | Full Time

https://www.sanity.io/careers/senior-applied-scientist-ai-ml...

https://www.sanity.io/careers/senior-data-engineer-new-ventu...

https://www.sanity.io/careers/senior-full-stack-engineer-new...

We’re helping companies make their web content more accurate, current and understandable for AI assistants so customers/consumers can make better decisions.

Black Hills Information Security | Senior DevOps Engineer | REMOTE

Role focuses on developing and maintaining automation for penetration testing service infrastructure (C2, remote access, phishing, etc.).

Abnormal.AI | REMOTE in US, Canada and Singapore) with optional offices in SF & NYC. HYBRID in Bangalore, India | Full-time |

https://careers.abnormal.ai

I'm looking for exceptional full-stack and backend engineers to join my teams at Abnormal AI to fight cybercrime. We have multiple open positions for each of these roles, working in Python, Golang, Typescript and React among other leading edge technologies. If you're looking for personal as well as company growth, you won't find a better company than Abnormal AI.

I'm the Director of Engineering for the Messaging Security Products Division. We build the user-facing products for inbound email security and have many interesting challenges working at massive scale. Please see the following links for more details on the open positions and our general careers page link for all open positions across the company. We are hiring for engineering in other divisions as well!

Engineering Manager Remote - Singapore: https://abnormal.ai/careers/jobs/7497288003?gh_jid=749728800...

Engineering Manager Hybrid - Bangalore: https://abnormal.ai/careers/jobs/7496072003?gh_jid=749607200...

Software Engineer II - Fullstack (4 open positions) Remote - USA/Canada: https://abnormal.ai/careers/jobs/6671235003?gh_jid=667123500...

Software Engineer II - Fullstack Hybrid - Bangalore: https://abnormal.ai/careers/jobs/6577843003?gh_jid=657784300...

Software Engineer II - Backend Hybrid - Bangalore: https://abnormal.ai/careers/jobs/6592675003?gh_jid=659267500...

Software Engineer 1 - Fullstack Remote Singapore: https://abnormal.ai/careers/jobs/7500482003?gh_jid=750048200...

Machine Learning Engineer II Remote - Singapore: https://abnormal.ai/careers/jobs/7509271003?gh_jid=750927100...

Lantern | NYC only, hybrid 4 days a week in office | Senior Software Engineer (mid career - Staff)

Lantern is Series A company, building the future of sales automation with AI agents that actually work. We're replacing the messy patchwork of enrichment tools, intent platforms, and automation software with a single system that does it all—pulling from 150+ data sources to research prospects, verify contacts, and help close deals.

We're a small, focused team tackling hard problems at the intersection of AI and enterprise data. You'll be working directly on the core product, helping us build intelligent systems that can reason about complex sales workflows and make autonomous decisions.

On any given day, you might:

- Build reliable agentic workflows that orchestrate multi-step research and outreach processes

- Design data pipelines that synthesize insights from hundreds of disparate sources into actionable intelligence

- Architect systems that scale gracefully as we handle increasingly complex prospect analysis and verification

- Collaborate directly with early customers to understand how our AI agents can solve their hardest go-to-market challenges

Tools we use:

- Python, LangGraph, BAML, Temporal.io, ClickHouse, Postgres, dlt - TypeScript, React - AWS, Modal.com, K8s, ArgoCD, GitHub Actions

This is a chance to work on genuinely novel problems in AI—not just fine-tuning LLMs, but building autonomous agents that can navigate messy real-world data and make smart decisions. If you're excited about pushing the boundaries of what AI agents can do in production, we'd love to talk.

apply using form, just answer a few questions

https://forms.gle/j7gDnVDHSEkmaLBQ6

Marple | Antwerp, Belgium | Full-time | Hybrid on-site + WFH

We are building software for handling huge time series from R&D in Aerospace & Automotive. Engineers use Marple to analyse data from exciting stuff such as: space rovers, eVTOL aircraft, electrical hyper cars, …

We are looking for a technical mind with a love for customers to become our head of customer success.

Reach out to nero (at) marpledata (dot) com

Uncountable | NY, SF, London & Munich (In-Person) | Full-Stack Engineering

https://www.uncountable.com/hiring/hn

Uncountable accelerates R&D for industrial scientists across leading materials, chemicals, and life sciences organizations. With our SaaS solution, our customers get better products to the market in half the time. Uncountable was founded by MIT and Stanford engineers and has been profitable since 2016. Our team has grown from 50 to 100 over the last two years.

Full-Stack Engineers | $120k - $220k + Equity

---> Uncountable is looking for engineers who can spearhead the development of the Uncountable Web Platform. The position is heavily product-driven and comes with challenges across the stack.

--> Summer internships and working student positions are also available.

Learn more: https://www.uncountable.com/hiring/hn

Uncountable is hiring in New York City, San Francisco, London, and Munich.

Contact our CTO directly at jason@uncountable.com

Runable | Bangalore, India | On Site | Software Engineers | Full Time & Internship | runable.com

Runable is a general purpose AI agent for any task you can think of. You can create presentations, websites, docs, reports, videos, images, use over 3000+ services, control remote browsers, etc.

I’m looking for savvy people with potential to grow quickly who wants to work at a startup. If you want to take ownership, learn and be a founder in future. This is the place for you.

Shoot me an email with your github or portfolio: saksham@runable.com

Reffie | Multiple Roles | Toronto, Canada & Austin, Texas (ONSITE/HYBRID) | Full-time

Reffie is the next-generation workflow and data analytics platform for residential real estate owners, operators, and property managers. Antiquated software causes renting to be a painful experience for everyone involved. Our mission is to streamline rental communications and house families faster. https://reffie.me/

Our backers include some of the most well-respected early-stage VCs and investors, including Haystack, Redbud, and Trust.

Open roles:

* Full-stack Eng (all levels as long as you have the requisite exp): https://reffie.me/jobs/swe-fullstack-toronto

* Applied Machine Learning Eng (all levels as long as you have the requisite exp): https://reffie.me/jobs/swe-ml-toronto

* Growth Lead: https://reffie.me/jobs/growth-lead

Tools we use: TypeScript, React, Python, FastAPI, AWS, Docker, Lambda, Terraform, FCM, Postgres

Why us: For engineers - we are among the most interesting companies building in person in Toronto today. We bring a Silicon Valley speed to Toronto's startup ecosystem.

For growth/sales - we have been growing 18% MoM for the last 10 months straight. It's an exciting time to join.

Apply by emailing careers [at] reffie [dot] me with role + HN in the subject line. More instructions in each job link.

Pomelo Care | San Francisco, NYC, Remote - USA ONLY with Work Authorization | Software Engineer (mid career - Staff)

Pomelo Care is a multi-disciplinary team of clinicians, engineers and problem solvers who are passionate about improving care for moms and babies. We are Series B, with some notable investors like First Round and a16z. As a member of our engineering team, you will have the opportunity to shape the product, codebase, and culture at Pomelo for years to come. On any given day, you may:

- Write clean, elegant code to build new features and keep our platform humming

- Design new systems to enable Pomelo's clinical team to deliver personalized care to an expanding patient population

- Build a great mobile experience so pregnant women and new parents feel they have a support team in their pocket

Tools we use:

- GCP, Kotlin, Typescript, React, React Native, Terraform, Spanner DB, Big Query, DuckDB, Dagster, DBT, K8s

Personally, I've never had so much fun and learned so much at work. This team is phenomenal, so I recommend applying if you're looking to learn a lot and make a big impact in an important space.

Learn more here: https://www.pomelocare.com/careers

HIFI Labs (https://hifilabs.co) | Remote | Senior Fullstack Engineer / Engineering Manager

Join HIFI Labs and work on innovative projects with well known and iconic musicians. Past artist activations include Linkin Park, Jisoo / Zayn,Rüfüs Du Sol, Dua Lipa, and Mike Shinoda. We're looking for a Senior Fullstack Engineer passionate about design, user interactions, and privacy.

You'll work with TypeScript, React/Next.js, Firebase and explore new frameworks like Astro. Experience with Styled Components, continuous deployment and devops is a plus. We also play around with React Native / Expo.

Sound like a fit? Email us at pierre at hifilabs dot co