Clerq | Staff Software Engineer, ML Engineer | onsite 3 days (NYC) | https://clerq.io Clerq is a New York City based fintech startup building a next generation platform payments platform that delivers a seamless checkout experience for high-ticket transactions. By leveraging modern bank rails, the platform offers the conversion and UX benefits of cards with risk and money movement infrastructure purpose-built for large purchases. Clerq replaces outdated manual payment methods like cash, checks and wires and expensive card surcharges with a smooth, integrated solution that helps merchants convert more customers without sacrificing margins.

We have started with the $1T+ U.S. auto vertical, where our platform is growing rapidly and already powering payments for several of the most recognized brands in the industry including multiple Fortune 500 companies. With proven traction, the company has expanded into high-growth adjacencies including high-ticket e-commerce, private travel and powersports.

We currently have two open roles in Engineering and are looking for engineers excited to help bring high ticket payments into the 21st century:

- Staff Software Engineer to help build out + scale core payment automation stack

- ML Engineer / Data engineer to focus on payment risk modeling.

Stack: Python/Django, Remix React, AWS Comp: $180-220k + Equity

Email me at nick@clerq.io if you are interested in hearing more!

Baton | Product Designer Manager / Senior Software Engineer - Full Stack, Technical Lead / Senior Software Engineer - Infrastructure, Machine Learning | San Francisco, CA (Hybrid) | Full-Time

Baton (baton.io) is building software to automate the $800B+ freight industry. We're a small, fast-moving team inside Ryder (Fortune 500 logistics company), rethinking how freight moves with real-time visibility, automation, and AI.

- Product Designer Manager: https://job-boards.greenhouse.io/baton/jobs/4796615007

- Senior Software Engineer - Full Stack, Technical Lead: https://job-boards.greenhouse.io/baton/jobs/4623804007

- Senior Software Engineer - Infrastructure, Machine Learning: https://job-boards.greenhouse.io/baton/jobs/4870381007

FunnelStory | Principal Architect (Go / Golang) | REMOTE (India) | Bengaluru | Full-Time | 55-85 LPA | https://funnelstory.ai

I'm Preetam, co-founder and chief architect of FunnelStory. We're looking for exceptional back-end engineers to build and scale our AI SaaS product.

FunnelStory is an AI-first customer superintelligence platform. We're a small (<20 people), fast-growing, VC-backed, early-stage startup, and we're gaining traction with enterprise customers. We're looking for architects/engineers to join our team that's building next-generation AI platforms using Go.

This is a great fit if you have:

* Deep expertise in Go.

* A strong architectural background, with experience designing and scaling complex systems.

* Expertise with relational databases (PostgreSQL) and SQL

* Excitement about taking a high-impact, independent role in an early-stage environment, helping to mentor and uplift the team.

Who we're looking for:

* 8+ years experience in Go, SQL, AWS

* Bias to action, ability to execute independently

* Strong architectural and independent problem-solving skills

* Ability to communicate complex ideas simply

More details + apply: https://wellfound.com/l/2Bn5eQ

Interested? Email me at preetam @ funnelstory.ai with "HN" in the subject.

BetterBrain | Software Engineer | Remote (USA)

About BetterBrain BetterBrain (https://www.betterbrain.com) is at the forefront of dementia prevention. We offer the most comprehensive platform to help our members prevent neurodegenerative diseases and optimize their cognition. Role Overview We're rapidly growing and are seeking a talented Software Engineer to join our team and help shape the future of preventative neurology. As a full-stack engineer with experience in high-growth startups and building AI products, you’ll play a key role in our development.

Key Responsibilities Develop and maintain web applications using our tech stack: NextJS, React, Typescript, and Supabase. Collaborate with cross-functional teams to design, develop, and implement new features.

Requirements 4-5+ years of full-stack development experience. Proven experience in high-growth startups. Strong background in building AI products. Proficiency in NextJS, React, Typescript, and Python. Excellent problem-solving skills and attention to detail.

How to Apply Email us at adi@betterbrain.com with the subject line "HN Hiring". Please include: - A copy of your resume. - A brief description of why you think you’re a good fit for this role (for example - a project you owned) Join us at BetterBrain and help us build a healthier future.

Lyst | Engineering Lead, ML Engineer, Data Scientist, Full Stack Engineer, Product Analyst | London, UK (Hybrid) | Full-time

Lyst is a global fashion shopping platform founded in London in 2010 and catering to over 160M shoppers per year. In 2025, Lyst joined Zozo, operators of Zozotown, the leading fashion e-commerce platform in Japan.

- Engineering Lead - https://apply.workable.com/lyst/j/7009C765BC/

- Product Manager - Shopping Experience - https://apply.workable.com/lyst/j/D2405803DA/

- Senior Data Scientist - https://apply.workable.com/lyst/j/3D079ADAFA/

- Senior Full Stack Engineer - https://apply.workable.com/lyst/j/73ED30CCAC/

- Senior Machine Learning Engineer - https://apply.workable.com/lyst/j/024CD64264/

- Senior Product Analyst - https://apply.workable.com/lyst/j/610E9CDA0E/

Spacelift | Remote (Europe) | Full-time | Senior Software Engineer | $80k-$110k+ (can go higher)

We're a VC-funded startup (just recently raised $51M Series C) building an infrastructure orchestrator and collaborative management platform for Infrastructure-as-Code – from OpenTofu, Terraform, Terragrunt, CloudFormation, Pulumi, Kubernetes, to Ansible.

We're now hiring for our new product, Spacelift Flows, built for more general DevOps (and related) automation - incident automation and response, self-service, slackbots, AI automations, building MCP servers, etc. We like to call it an "Integrated Automation Environment".

You can see a demo video of it here[0] with more videos available in the job post. Tech stack is Go + Postgres backend, along with TypeScript + React frontend.

Overall we have a deeply technical product, trying to build something customers love to use. We promise interesting work, the ability to open source parts of the project which don't give us a business advantage, as well as healthy working hours. With the product being in it's early days, it's also a great opportunity to have a large impact!

If that sounds like fun to you, please apply at https://careers.spacelift.io/jobs/6438380-product-software-e...

[0]: https://youtu.be/vZHGg1QIAQk

Neon Health | AI agents in healthcare | Hiring Eng, Growth, BizOps | SF (North America)

* Applied AI Systems Engineer | SF, Remote (North America) | Full-time | $120-180K + equity

* Senior Backend Engineer | SF, Remote (North America) | Full-time | $170-225K + equity

* Business Operations | SF | Full-time | $125-195K + equity

[neonhealth.com](http://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—serving the largest healthcare enterprises.

Traction: profitable and growing fast. Selling 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#open-positions (and make sure to mention HN!)

Airgoods | Platform Engineer, Design Engineer, Mobile Engineer | NYC | Full-time | $120k-$220k + equity

Airgoods is building the future of food and beverage distribution. Today, we help emerging brands (think Fishwife, Ghia, and David Protein) rapidly grow their wholesale business and earn placement into the nation’s best specialty food stores.

Apply here: https://jobs.ashbyhq.com/airgoods

Improving South America | REMOTE (LATAM) | Full-Time,

- Node + TS + AWS Developer - SR.

- Database Engineer - SSR/SR.

- Fullstack Engineer: Python + TS + AI - SR.

- Data Engineer w/ Snowflake - SR.

- Node.js Developer - SR.

Apply here: getonbrd.com/companies/improving - or follow us on LinkedIn

Extend | Senior Software Engineer, ML Engineer, AI Engineer | NYC | Full-time | $250k-$350k + equity

Extend is building a LLM-native document processing platform (massive market w/ low NPS existing solutions) (https://extend.ai/)

Apply here: https://jobs.ashbyhq.com/extend

--------

Why you should consider joining:

- High comp (both cash & equity), culture of high impact and ownership, in-person in NYC

- We blew past 7-figures in ARR with a team of 6, and have grown 5x YoY

- Our customers include companies like Zillow, Chime, Flatiron Health, Brex, Mercury, Checkr, and many more

- We're supporting customer and revenue metrics with 1/2 the team size of other startups, so everyone joining at this stage will have outsized impact

- Backed by YC, Homebrew, investors from OpenAI, and more

krea.ai | Distributed Systems Eng. & Data Engineers | San Francisco (on-site), CA

I'm the cofounder & CTO of Krea (https://www.krea.ai). We are a startup in San Francisco building browser-based AI creative tools to improve the workflows of artists, designers, and professional creatives. Small team (~22); millions of active users; and raised over $83M from top Silicon Valley investment firms.

We're looking for talented engineers who want to tackle hard technical challenges with smart people while building a creative platform that big companies and startups will rely on.

The job:

- Build distributed systems to process massive (billions of files, petabytes), amounts of image, video, and 3D data, solving scaling bottlenecks as you go.

- Learn ML engineering from world-class researchers on a small tight-knit team. You’ll contribute to foundation image, video, and world models from 0 → production, and see them used by millions.

- Play with huge Kubernetes GPU clusters; our main GPU cluster takes up an entire datacenter from our provider.

Tech stack: python, pytorch, k8s, a rotating cast of data tools (e.g. DuckDB, massive relational DBs, PyArrow, etc.)

You should apply if you are an excellent generalist engineer with strong backend experience and an intuition for systems design. Bonus points for experience with dist. systems, k8s, and existing ML or data experience (but not required!). Cool side projects are a green flag.

A few links about us:

- Sneak peek of our real-time video model → https://x.com/krea_ai/status/1961074072487620635

- Technical report for FLUX.1 Krea, our first open-source text-to-image model → https://krea.ai/blog/flux-krea-open-source-release

You can contact me at:

  d+hn@krea.ai

Microsoft Research | AI researchers / engineers | ONSITE (UK/GERMANY) | Full-Time

We are a team of researchers at the crossroads between biophysics and machine learning. Our work hit the cover of Science magazine a few weeks ago (https://www.science.org/toc/science/389/6761).

We have several FTE senior research/engineering openings. Annual salary ~100k GBP/y + 30% optional bonus + MSFT stock

https://jobs.careers.microsoft.com/global/en/job/1885786/Sen...

https://jobs.careers.microsoft.com/global/en/job/1885738/Sen...

https://jobs.careers.microsoft.com/global/en/job/1885746/Sen...

https://jobs.careers.microsoft.com/global/en/job/1885775/Pri...

We also have internships + a fixed-time postdoc position available:

https://jobs.careers.microsoft.com/global/en/job/1880857/Res...

https://jobs.careers.microsoft.com/global/en/job/1880858/Res...)

SPREAD | https://www.spread.ai/ | Technical writer | Germany (Berlin, ideally) | Full-time

SPREAD builds B2B software for mechatronics customers like cars and defense systems. We help them design, build and diagnose problems with their systems faster. We do it with a combination of a well-designed ontology we've spent years working on as well as AI-based systems. Right now, we're looking for a technical writer to join our team that's really forward thinking to own the writing, tooling, and also lead the company in ambitious technical writing.

You can reach me at shane at spread . ai with your resume

9 Mothers Defense | Robotics Eng. & Computer Vision / Data Scientist | Hybrid (Austin TX) | Full-time

Building AI-driven turrets that stop hostile drones. We need sharp, hands-on engineers:

Embedded Robotics: Python on Jetson, CAN (+ EtherCAN / EtherCAT) drive buses, high-speed cameras, real-time PID/servo control, ROS, TensorRT

Computer Vision / ML: detection + tracking, transformer-based visual models, TensorRT tuning on Jetson

US persons only (e.g. green-card, citizens). Shoot your résumé / GitHub and a quick note on why you're good fit to jobs@9mothers.com

Mechanize Inc. | San Francisco, CA (Hybrid, ONSITE preferred) | Senior SWE ($500k+equity), Junior SWE ($250k+equity), ML Engineer ($500k+equity), Quant Researcher ($500k+equity) | Full-time

Apply at: https://jobs.ashbyhq.com/mechanize

Mechanize builds sophisticated reinforcement learning environments to simulate realistic software engineering tasks (feature development, debugging, refactoring, reliability testing) for frontier AI labs. Our mission is to automate software engineering first, then all economically valuable work. We're growing quickly, working with leading AI labs, and backed by investors like Nat Friedman, Daniel Gross, Patrick Collison, and Jeff Dean. Featured in NYT and TechCrunch.

Artificial Analysis | https://artificialanalysis.ai | Full Stack Engineer, ML Engineer, Member of Technical Staff | Onsite in San Francisco or in Australia/New Zealand | Competitive Salary + Equity

Artificial Analysis is an independent AI benchmarking and insights provider. We benchmark AI to help engineers and companies understand AI and make informed decisions regarding which AI technologies to use. We are fast growing with a team of 20 and have backing from investors including Nat Friedman, Daniel Gross & Andrew Ng.

We are hiring for four roles: 1. Full Stack Engineer: Full Stack Engineer to support our benchmarking of AI and with communicating these benchmarks to our users. Proficiency in Typescript & Python required. Familiarity with LLM APIs preferred. Tech stack: Javascript/Typescript, Node.js, React/Next.js, Python.

2. ML Engineer: ML Engineer to support our benchmarking and evaluation of AI software stack. You will design and run benchmarks and evaluations of different AI models. Strong analytical skills and proficiency in Python required.

3. Member of Technical Staff: You will design evaluations of different AI models and work to translate technical insights to analysis that helps companies navigate AI.

4. Product Manager (AI Media Generation): You'll work closely with us to develop and enhance our media generation (Image, Video, Speech, Music) arenas and leaderboards, contributing to product strategy and execution at the intersection of creativity and AI.

Apply at hiring (-at-) artificialanalysis.ai with your resume, github and dot points on relevant experience (including anything you've built). Add | HackerNews to email subject line.

Metaculus | https://www.metaculus.com/ | Remote: GMT-8 to GMT+3 | Full Time | Remote

Role: Full-Stack Engineer (https://apply.workable.com/metaculus/j/945ED2A234/)

Metaculus is an online forecasting platform and aggregation engine working to improve human reasoning and coordination on topics of global importance. We offer trustworthy forecasting and modeling infrastructure for forecasters, decision makers, and the public. Our mission is to to build epistemic infrastructure that enables the global community to model, understand, predict, and navigate the world’s most important and complex challenges.

JWP Connatix | AI Software Engineer | REMOTE (EU) | Full-Time

JWP Connatix is the most comprehensive independent video technology and monetization platform, helping broadcasters, publishers, and advertisers deliver premium streaming and online video experiences while maximizing video revenue across all screens. The company offers an end-to-end platform that streamlines live and on-demand video with hybrid monetization models, unique data and insights, unmatched customer service, and the largest independent premium video marketplace, providing the entire media ecosystem with enhanced scale, transparency, and revenue.

We are looking for a skilled and adaptable AI Engineer to join our AI Proof of Concepts team at JWP Connatix. You'll be responsible for implementing AI-First development methodologies, integrating sophisticated AI tools into our software pipeline, and rapidly building MVP prototypes that demonstrate innovative solutions. This role offers the opportunity to work at the cutting edge of AI-integrated development while delivering high-impact prototypes in a fast-paced, iterative environment. The ideal candidate thrives in rapid prototyping environments, has hands-on experience with AI tool integration, and enjoys the challenge of quickly turning concepts into working demonstrations for stakeholder validation. Candidates should also have know and work with AI code generation tools (Claude Code, Cursor, Copilot, etc).

If this sounds like something you'd be interested in please apply!

https://jwpconnatix.com/careers/job-posting/?gh_jid=7257043

Surge AI (https://surgehq.ai/careers) | Software Engineers (full-stack / product https://surgeai.notion.site/Product-Engineer-4211688ff99b46d...) and Strategic Project Lead (https://surgeai.notion.site/Strategic-Projects-Lead-Generati...) | Full-time | ONSITE SF or NYC Hybrid

Our mission at Surge is to build the human infrastructure behind the next wave of AI and LLMs. We operate a data platform that powers AI teams at OpenAI, Anthropic, Meta, Google, and more. This year, we've been focusing on RL environments and agentic workflows to help our clients ship agents that interact with the world. Here are some examples of our past work:

- Creating the GSM8K dataset: https://www.surgehq.ai/blog/how-we-built-it-openais-gsm8k-da...

- Collecting RLHF data for Anthropic's Claude: https://www.surgehq.ai/case-studies/anthropic-claude-surgeai...

You’d be joining a rapidly growing team of former engineering and ML leaders from Google, Meta, Twitter, and Airbnb. We work in small groups, ship quickly, and value autonomy and ownership. No previous AI experience is required, if you have the engineering skills you can learn what you need on the job.

We're looking for senior engineers to work out of our offices in SF or NYC, or remotely. Please reach out to us at careers@surgehq.ai with a resume and 2-3 sentences describing your interest. Excited to hear from you!

Zencastr | Senior Backend, Fullstack, ML Engineers, Data Analyst | REMOTE (Americas, UTC-1 to UTC+1) | Full-time

We're building the podcast recording platform that makes pro-quality audio accessible to everyone. Fully distributed team, scaling fast.

Looking for senior engineers who care about performance and ownership: - Backend: Node.js/TypeScript, Redis, MongoDB, APIs at scale - Fullstack: React + backend chops - ML: Production ML systems, speech/audio, MLOps - Data Analyst: SQL, BI tools, product analytics (3+ years)

Use LLMs for homework (we encourage it). Ship fast, own outcomes, work from anywhere. Small team, real impact, profitable company.

Apply: https://jobs.ashbyhq.com/zencastr (mention HN)