Konvu | https://konvu.com/ | Software Engineer | FULLTIME | ONSITE | Paris, France

At Konvu, we’re on a mission to make security invisible. As we move towards a future dominated by code automatically generated, tested, and deployed by AIs, we need a new paradigm for application security. Vulnerabilities must be automatically detected, prioritized, and remediated.

Behind Konvu are founders with deep roots in the security industry. As early employees at Sqreen YCW18, a notable security startup acquired by Datadog, we have firsthand experience in driving security solutions from concept to global impact.

We’re looking for:

* Product Engineer https://jobs.ashbyhq.com/konvu/be7be978-08be-4672-a9e5-a559e...

* Product Engineer (AI Agents) https://jobs.ashbyhq.com/konvu/be028b43-a7a7-4f0a-b968-320dd...

Read more about how we're building Konvu the YC-way: https://konvu.com/blog/yc-culture

Sonix | Senior Full-Stack Engineer | Remote (US only) | Full-time | Ruby on Rails + React

Sonix (https://sonix.ai) is an AI-powered transcription and translation platform used by thousands of businesses, researchers, media teams, and legal professionals around the world. We’re profitable, bootstrapped, and growing fast.

We're looking for a senior full-stack engineer to join our small team. You'll work directly with the founder/CTO (me) on everything from AI feature development to infrastructure to working with our support team to squash bugs. Our stack is Rails + React + Postgres + Redis.

It’s a great role if you love shipping quickly, owning big parts of the product, and working on a product people actually use every day.

More details here: https://sonix.ai/careers/senior-software-engineer Email me directly: Email is hidden

Opsin Security | San Jose / SF Bay Area (Hybrid, 2–3 days on-site) | Full-time | https://opsinsecurity.com/careers

Opsin helps enterprises secure and deploy Enterprise Search/AI systems (e.g. Microsoft Copilot, Google Gemini) responsibly without exposing sensitive data. Venture-backed by Race Capital. You’ll work directly with the founders on a small (<10) person team shipping fast in a huge green-field space.

We are hiring for:

- Senior AI Engineer – 5 + yrs backend + 2 + yrs ML/LLM; Python, SQL, AWS/GCP experience; comp + eq (https://www.opsinsecurity.com/jobs/senior-engineer-ai-engine...)

- Senior Full-Stack Engineer – 4–8 yrs shipping product; React/Next.js + API & DB design + Nest.js; TypeScript, Python a plus; comp + eq (https://www.opsinsecurity.com/jobs/senior-engineer-full-stac...)

- Staff Backend Engineer – 8 + yrs building scalable systems + 2 + yrs technical leadership; architect data-driven services for LLM security; comp + eq (https://www.opsinsecurity.com/jobs/staff-engineer-backend)

- Founding Account Executive – full-cycle sales to CISOs/CIOs; 5 + yrs enterprise SaaS; cybersecurity/Microsoft ecosystem a plus; ~50% travel; comp + eq (https://www.opsinsecurity.com/jobs/founding-account-executiv...)

Tech stack: Python, TypeScript (Nest.js), React (Next.js), Postgres, Azure, modern LLM tooling

How to apply: email your résumé + a short note to Email is hidden with subject “HN – [role]”, or apply on our careers page.

I’m Shay Nehmad, Founding Engineer at the company. Happy to answer questions at Email is hidden or on LinkedIn

Aleph | Senior Software Engineers (frontend, backend, fullstack), Eng Managers | Fully Remote (ET to PT hours) | Full-time | https://www.getaleph.com

Aleph is an AI-native platform for Financial Planning & Analysis (FP&A). We operate in an established software category with a multi-billion market but no clear winner. Our growth has come from product velocity and customer outcomes, not marketing spend, and the results speak for themselves.

We're backed by top VCs (Bain Capital Ventures, Khosla Ventures, YC, Picus Capital), and work with customers like Eight Sleep, Webflow, Turo, Notion, Zapier and others.

Our tech stack: TypeScript, React, Python, Mongo, GCP

See all open positions and more details in https://www.getaleph.com/careers#open-roles

StrongDM | [Staff, Senior, Junior] AI Agent Engineer | San Francisco Bay Area (Palo Alto) | Full-Time | ONSITE

StrongDM applies deep tech to hard problems for demanding cybersecurity customers. Our embrace of large language models continues that tradition, achieving useful and reliable outputs from ambiguous and non-deterministic inputs.

Join me (Justin, co-founder & CTO) and our newly-formed AI Agent team to help our global customers secure their most critical systems.

Ideally: if you've already decided you need to be working on the edge of this technology wave & you're open to doing so in person at a physical whiteboard, e-mail me a few words to that effect (Email is hidden).

Optionally: read more at http://strongdm.com/careers

Nelknet (https://nelknet.com/) | Senior contractors, frontend and backend | Remote (US & international, but some overlap with clients needed) We're a small, experienced team building software solutions for US-based clients. Recent projects include:

- Building ChatGPT-style interfaces for intelligence report analysis

- Developing generative AI features for professional networking platforms

- Platform engineering for logistics/trucking management systems

- Architecture design for real estate search engines

- Implementing RAG pipelines for edtech products

We're expanding our network of senior contractors (both frontend and backend). This is a 1099 contracting relationship - you'll have the flexibility to manage your own schedule and potentially work with other clients while maintaining a professional commitment to our projects.

Requirements: - Strong English communication skills - Senior-level development expertise - Experience with modern tech stacks - Ability to work independently while collaborating effectively - Some level of US business hours availability

If you're interested, please fill out our intake form: https://baserow.io/form/mxa6nquokw9ccdpau37oph1uopfhhesph6k0...

If we have a project that is well-suited to your skillset, I will definitely be reaching out!

Looking forward to connecting!

Property Meld | Mid-level and Senior Software Engineers, Product Designer, Product Manager | Full-time | Remote (US & Canada) or Rapid City, SD

Looking for something more meaningful? How about the opportunity to have a direct impact on the property maintenance experience for hundreds of thousands of residents?

Welcome to the future of property maintenance. Property Meld’s vision is to radically improve how the property management industry handles property maintenance. If you’ve ever had a maintenance issue at your housing rental, you know how much of a pain it can be to get it fixed quickly and reliably. It doesn't have to be this way. We're rethinking the entire property maintenance experience from the ground up with two things in mind - first, driving the cost of doing maintenance to the absolute minimum, and second, providing an experience to residents and property owners that makes them want to stay with their property manager. If you are excited about turning something that has historically been a negative experience (maintenance) into a positive experience, we'd love to talk with you.

Stack: Python, Django, Typescript, React, React Native, PostgreSQL

Product Designer: https://property-meld.breezy.hr/p/92a5b2db4b2c-product-desig...

Product Manager: https://property-meld.breezy.hr/p/7023bbc73369-product-manag...

Engineer postings are not up yet, but you can apply via the email below.

Apply through our career page or you can email us at `tech.jobs at propertymeld.com`

Stytch | Hiring a Designer and Software Engineers | ONSITE / HYBRID in San Francisco, California | https://stytch.com

About us: Stytch is the identity platform for humans & AI agents. We're making it easy to build authentication, authorization, and security + fraud prevention for both humans and AI agents.

Today we just shipped IsAgent, a tool to identify AI agent traffic and build agent-ready experiences: https://stytch.com/blog/introducing-is-agent/ - I've also got a Show HN post up with more details if you're curious.

We're hiring a designer and some software engineers to build dev-friendly products to make auth and AI readiness easy. More specific details on the job postings here: https://jobs.ashbyhq.com/stytch

Chronograph (chronograph.pe) | DevOps Engineer | Full-Time | Remote (US) | $140-160K USD + equity

Chronograph was founded to bring next-generation technology to private capital markets. Through our suite of cloud-based analytics and data management solutions, we help many of the world’s largest and most sophisticated venture capital, private equity, and credit funds understand their investment performance in unprecedented detail.

We are looking for a candidate with a generalist background in software development, including 3-5+ years of experience on DevOps, Platform Engineering, Site Reliability Engineering (SRE), or MLOps teams. You’d be joining a small cross-functional team and have the chance to make critical contributions as we scale our engineering team and business.

Our ideal candidate has a passion for automating ops, troubleshooting infrastructure, and creating first-class developer experiences. On top of that, expertise with the following (or similar) tools/technologies is a strong signal of fit: Kubernetes, Prometheus, Grafana, Terraform, AWS, GitHub Actions, PostgreSQL, Node.js, Ruby on Rails, Nix, and Docker.

Note that while this is a remote position, travel to our NYC HQ 3x/year for "team week” on-sites is required.

If interested, apply here: https://grnh.se/1q1yybxf7us

Converge (YC S23) | Founding Product Engineer | NYC ONSITE | Full Time | 230k + 0.8%

We're a small team of 6, but scaled to $1.4M+ in ARR across ~200 customers and recently raised $5.6M from YC and the founders of Posthog, Algolia, Showpad, Shipbob, etc.

We're building the entire data stack of a marketeer in-house and deeply integrated. This offers them a 10x better product experience to understand where they're acquiring customers from.

Our infra processes ~4000 jobs/s and billions of $ in e-commerce transactions. We're building realtime data pipelines and complex data analysis tools -- lots of interesting challenges.

Have a look here for more info - runconverge.com/careers