Encube Technologies | Senior & Lead Software Engineers Onsite (Stockholm) or Remote | Full-time

Encube Technologies is building collaborative, real-time software for manufacturing. We are looking for experienced engineers to help shape the core of the product.

You will work on challenging problems at the intersection of browser-based 3D rendering, CAD compute algorithms, and real-time collaboration, with a strong focus on end users and performance. This is hands-on, product-driven engineering with significant technical depth.

What you will work on - High-performance, browser-based 3D rendering - Compute-heavy CAD and geometry algorithms - Real-time, multi-user collaboration features - Systems bridging frontend graphics and backend compute

Tech stack

Frontend - React, Next.js, TypeScript

Graphics - WebGPU, WebGL2, three.js, React Three Fiber

Backend - Python microservices with occasional C++ bindings - Kubernetes-based infrastructure

We are hiring Senior and Lead Engineers who enjoy ownership, care about product quality, and like solving difficult technical problems with real-world impact.

Apply via our website: https://www.getencube.com/we-are-encube

Please mention in your cover letter that you found Encube Technologies via Y Combinator.

Tenzir | Software Engineering & Sales | Remote (EU Timezones) | Full-time

Tenzir is building an open-core security data pipeline for the AI era. We empower defenders to collect, shape, and route security telemetry at scale. Our stack relies on C++23/26 and Apache Arrow for the core engine, with a modern TypeScript platform layer.

We are hiring for 4 key technical roles to join our distributed team (HQ in Hamburg):

- Software Engineer (Core Engine): Systems programming with C++23/26. Work on our pipeline language, query execution, database integrations, and streaming data processing with Apache Arrow.

- Software Engineer (Product): Full-stack TypeScript/Python focus. Build the control plane, platform APIs, and developer tools, AI workflows, and anything else that makes our engine accessible.

- Account Executive: Our first dedicated AE to own the full enterprise sales cycle. You'll work with complex deals in security and data infrastructure.

- Solutions Engineer: Lead POCs and post-sales implementation. You'll be the hands-on engineer ensuring customers succeed with complex data pipelines.

We are a remote-first team across European timezones. If you like solving hard data problems, we'd love to hear from you.

Apply: https://tenzir.com/company/careers

AREO | Remote (EU) | Full-Time | Equity | Roles: [Engineering Manager (Ruby on Rails), Lead Product Engineer (Ruby on Rails), Senior Android Developer]

My name is Marius and I am the CTO at AREO (https://goareo.com/).

AREO, founded in January 2023 by a team with 20+ years of combined experience in retail and startups, is a young startup specializing in developing innovative solutions for supermarkets and grocery retail stores. Our cutting-edge B2B SaaS platform optimizes workflows for employees by providing real-time access to inventory, product information, and customer inquiries. We serve large supermarket chains in Germany and across the EU.

About a year ago we brought a backend developer on board through "HN - Who is hiring" and are now seeking a Lead Product Engineer / Engineering Manager and a Senior Android Developer with a minimum of 8 years of experience (preferably in startups) as we just closed another 1M+ ARR contract with a major retail chain and are growing quickly.

For the Product Engineer / Engineering Manager (but not the Android Developer) role professional knowledge of German is highly preferred.

If you're passionate about building innovative retail products from scratch, these roles are for you.

Backend Stack: Ruby / Rails (8.x), StimulusJS / Hotwire / Turbo, AlpineJS, Postgres, Docker, DigitalOcean, OpenAPI, LLMs

Mobile Stack: Kotlin, Room, Jetpack Compose, Hilt Perks: Fully remote roles (Europe), work where you are most productive, sizeable equity in a rapidly growing company, flat hierarchies, no-ego work environment, work in a lean but highly experienced team

Apply here: Email is hidden and mention “HN - Who is hiring?” and the role you are applying for in the subject.

New Lantern | https://newlantern.ai | Software engineers (frontend and backend product engineers) | Full time in San Francisco, CA (ONSITE)

New Lantern is building an AI radiology resident—think Cursor for radiologists. Our application integrates the three software tools radiologists use all day [1], together with AI, to create a platform that saves radiologists toil and lets them focus on reading images and finding disease.

We are a series A startup with ~15 engineers (~25 total staff), have live customers generating revenue, several years of runway, and are backed by Benchmark, Anthropic, and other great investors.

We're hiring for several engineering roles. You'll work directly with our founder/CEO, our staff radiologists, and our end users to build a product that radiologists rely on daily. You'll have real ownership and autonomy, and ship meaningful work frequently. Learn more and apply at https://careers.newlantern.ai

I'm Steve, New Lantern's Head of Engineering. If you're interested or want to learn more, shoot me a note at (my HN Email is hidden. I've already hired one engineer from HN this year!

[1] a radiology image archive & viewer, a medical report dictation system, and work management system

Aqora | Quantum Computing Expert | Full-time | Paris (HQ) or Remote (Europe) We're building the go-to hub for quantum computing, focused on organizing quantum hackathons and competitions globally as well as hosting quantum datasets and algorithms. We've partnered with major industry players, generating six-figure revenues, and have more exciting projects lined up. Our MVP is live, and we're looking for a Quantum Computing Expert to help us scale. In this role, you’ll: - Refine quantum use cases and define metrics to evaluate submissions. - Build partnerships and onboard quantum professionals.

- Contribute to product-market fit and platform growth.

- Assist with hackathons and write technical articles on challenges.

Requirements:

- Experience in quantum algorithm development (digital & analog).

- Experience mentoring at hackathons.

- Proactive and detail-oriented.

Bonus: PhD in quantum physics. Perks: Competitive salary, equity options, workspace at Station F (Paris).

Apply by sending your resume, intro, and portfolio to https://quantum.jobs/jobs/85500519-quantum-computing-expert.

Help shape the future of quantum computing at Aqora!

VLM Run (https://vlm.run) | Infrastructure Engineer + DevRel + AI/ML Engineer | Santa Clara, CA (HQ)

VLM Run is building infrastructure for production Vision-Language Model (VLM) systems — fast inference, tool-use + orchestration, reliable structured outputs, and the observability to iterate quickly. We’re a deeply technical team of veteran AI / computer-vision engineers (20+ years combined) who’ve shipped production ML infrastructure across autonomous driving and LLMs.

Open roles:

1. Infrastructure Engineer (Full-time, ONSITE): $150K–$220K + 0.5–3% equity https://app.dover.com/apply/vlm%20Run/8d4fa3b1-5b38-42e1-927...

2. Founding DevRel (Full-time, ONSITE/REMOTE): $90K–$140K + 0.5–3% equity https://app.dover.com/apply/vlm%20Run/de84c63e-fd0a-418b-929...

3. AI/ML Engineer (Full-time, ONSITE): $150K–$220K + 0.5–3% equity https://app.dover.com/apply/vlm%20Run/1a490851-1ea1-4f12-a0f...

Email hiring "at" vlm.run with your GitHub + a couple recent projects.

P.S. We recently launched *Orion*, our visual agent that can reason and act over images, videos and documents. You can chat with Orion at https://chat.vlm.run and see capabilities at https://docs.vlm.run.

Apply: https://app.dover.com/jobs/vlm-run

Arbolus | https://arbolus.com | Senior Software Engineer | Barcelona, Spain (hybrid, EU work authorization required) | Full-time

Arbolus enables professionals who purchase B2B tech products monetize their real-world experience through short consultations, surveys, and product knowledge exchange with top-tier investors and companies.

We are hiring senior full-stack engineers to work on engagement and incentive systems for our expert community, with real product and business ownership.

Stack: .NET (backend), React (frontend). Nice to have: cloud and applied AI experience. Team: ~25 engineers. Strong culture of debate, critical thinking, and disagreement.

Apply: https://careers.arbolus.com/jobs/7139985-senior-software-eng...

Realm.fun | Full-Stack Engineer | Remote (EU timezone preferred)

Realm.fun is a game server hosting platform - think "Vercel for game servers." We make it dead simple to spin up Minecraft, Valheim, Palworld, and 25+ other game servers in seconds. Stack: - TypeScript, Astro 5 (SSR), Tailwind CSS - Supabase (PostgreSQL), Stripe - Docker, Kubernetes, Pelican Panel - Deployed on Hetzner Cloud What you'd work on: - Building the dashboard where players manage their servers - Real-time features (console, metrics, player lists) - Payment/subscription flows - Infrastructure automation (node provisioning, scaling) What we're looking for: - Strong TypeScript skills - Experience with either frontend (React/Astro) or backend (Node/PostgreSQL) - Comfortable with infrastructure (Docker, K8s is a plus) - Bonus: You've actually hosted or played on game servers Small team, early stage, lots of ownership. We're bootstrapped and profitable. Apply: https://realm.fun/careers

NetToolKit | Full-stack Developer | ONSITE (Santa Clara, CA)

NetToolKit offers a variety of services such as geocoding, map tiles, and CAPTCHA.

Entry-level and junior candidates are welcomed to apply: https://docs.google.com/document/d/1rwxcghey6xdnjvbhi87gsgwg...

Beautiful.ai | Full-Time | Remote in US & CAN | SaaS B2B Presentation Software | Series B | 16M Funding | AI Industry

1. Senior Platform Engineer | 160k - 200k Base salary + Equity | https://job-boards.greenhouse.io/beautifulai/jobs/4802989007

2. Senior Software Engineer | 160k - 200k Base Salary + Equity | https://job-boards.greenhouse.io/beautifulai/jobs/4802854007

3. Software Engineer | 120k - 160k Base Salary + Equity | https://job-boards.greenhouse.io/beautifulai/jobs/4802768007

4. Staff Platform Engineer | 200k - 250k Base Salary + Equity | https://job-boards.greenhouse.io/beautifulai/jobs/4803038007

5. Staff Software Engineer | 200k - 250k Base Salary + Equity | https://job-boards.greenhouse.io/beautifulai/jobs/4802916007

6. Account Executive | 140k - 180k USD Base Salary + Uncapped On-Target Commission at 50/50 Split | https://job-boards.greenhouse.io/beautifulai/jobs/4955956007