Rover | Barcelona, Spain & Seattle, USA | Software Engineers (Multiple Roles) | Full-time Rover is the world’s largest online marketplace for pet care. We connect millions of pet parents with trusted sitters and walkers, and we’re building a global platform that combines technology, community, and love for animals. With offices in Seattle, Barcelona, and beyond, we’re scaling an engineering culture focused on high-quality code, data-driven product decisions, and customer empathy. Open Roles:

Product Analyst (Seattle) Lead Data Analyst (Barcelona) Manager, Product Analytics (Barcelona) Senior Business Intelligence Analyst (Barcelona) Senior Product Analyst (Barcelona) Data Engineer (Barcelona) Staff Engineer, Payments Team (Seattle) Lead/Senior Software Engineer (Barcelona) Senior Frontend Platform Engineer (Barcelona) Senior Product Engineer (Barcelona) Manager, Product Design (Barcelona) Senior Product Designer (Barcelona) Senior Product Designer (Seattle)

Apply: https://www.rover.com/careers/engineering

CASUS | Full-time | Remote (EU time zone) + Quarterly Meet-ups | https://getcasus.com

We are looking for a Fullstack Engineer and AI enthusiast to join our engineering team.

We are rebuilding the core tool stack of the legal industry from the ground up. Lawyers still work in workflows designed decades ago: fragmented tools, manual reviews, static templates, and compliance processes that don’t scale. We think that’s unacceptable in an AI-first world.

This job is for you if you:

Love building from 0 to 1 and validating ideas quickly. Have a fullstack skillset, enjoying collaborating across the stack. Used to leveraging AI to code and most of your code is written with AI. Are curious about AI integration (e.g., LangChain, Azure LLMs) and want to push boundaries. Prefer startup speed over corporate processes.

Only apply if you've been heavily leveraging AI to code - our team moves at lightning speed.

apply here and show us the project you're most proud of: https://join.com/companies/casusch/15584391?

StorPool | Senior Software Engineer - Storage Core (C/Linux) | Remote (UTC-1 to UTC+5) | Full-time | Multiple roles

StorPool is building the future of data storage. Our software runs at the heart of modern clouds, delivering <100µs latency, 113M+ IOPS per cluster, and 99.999% availability. We're profitable, self-funded, and our customers love us (NPS off the charts).

We're looking for a Senior Software Engineer to join our Core Storage team. You'll tackle genuinely hard problems: writing custom Linux drivers, optimizing lock-free data structures at nanosecond scale, building fault-tolerant distributed algorithms, and debugging issues that go all the way down to kernel internals. This isn't CRUD work - it's systems programming at its most challenging.

Competitive salary, fully remote, meaningful time off, and a yearly education budget to keep learning.

If you get excited about shaving microseconds off I/O paths and building infrastructure that simply doesn't break, we should talk.

Apply here: https://storpool.com/force/senior-software-engineer-storage-...

Proton (https://proton.me) | Privacy & productivity | Full-Time | Europe, hybrid ONSITE, visa sponsorship | Scale-up, bootstrapped, profitable

I am listing mostly Mail desktop related positions, but there are a lot more on the site. New rust based client architecture: https://proton.me/blog/next-generation-proton-mail-mobile-ap...

1. Senior Software Engineer | London (UK), Geneva (Switzerland), Barcelona (Spain) | Windows, Linux, Rust, Mail | https://job-boards.eu.greenhouse.io/proton/jobs/4766179101

2. Software Engineer | London (UK), Geneva (Switzerland), Barcelona (Spain) | macOS, Windows, Linux, Rust, Mail | https://job-boards.eu.greenhouse.io/proton/jobs/4585460101

3. Staff QA Automation Engineer | London (UK), Geneva (Switzerland) | Mobile, Desktop | https://job-boards.eu.greenhouse.io/proton/jobs/4653905101

4. Senior Product Designer | London (UK), Paris (France), Barcelona (Spain) | Mobile, Desktop, Mail | https://job-boards.eu.greenhouse.io/proton/jobs/4606437101

5. Senior Product Manager | London (UK), Paris (France), Barcelona (Spain), Geneva (Switzerland) | Mobile, Desktop, Mail | https://job-boards.eu.greenhouse.io/proton/jobs/4364312101

Nango | Full-time | Remote (North America, LATAM, Europe) | https://nango.dev

Nango (YC W23) is a developer infrastructure company and the leading provider of API access for agents and apps. It enables AI applications to connect to the real world through integrations.

More than 250 paying customers rely on Nango today, including Replit, Mercor, and Exa. We are a YC-backed, multi-million ARR company with a team of 10 from AWS, Snyk, Netlify, Uber, Samsara.

We’re hiring for the following openings:

* Backend engineer

* Product engineer, Customers

* Product engineer, Growth

* Chief of Staff

* Developer Content Engineer

Find out more, and apply at: https://jobs.ashbyhq.com/nango

AIRMO | FE, FS, ML engineers | Luxembourg | ONSITE

AIRMO is a European climate-tech company using space and airborne technologies to monitor greenhouse gas emissions globally. Our instruments — combining LiDAR and hyperspectral imaging — detect and quantify methane and CO₂ emissions from industrial sites, pipelines, and national infrastructure.

We’re building a global monitoring system from air to space, helping energy companies, governments, and investors take real action on climate impact.

We are hiring a frontend, fullstack and an ML engineer in our new Luxembourg office. This team will be responsible for building out our data platform frontend, that allows users to interact with satellite tilesets and derivative information. You must be located in Luxembourg, or be willing to relocate.

https://www.airmo.io/careers

PlantingSpace | Full-time | Remote (EU time zone) + Quarterly Meet-ups | https://planting.space

We’re building an AI system for analysts and scientists, based on a fundamentally new approach to reasoning and knowledge representation. Our approach differs from LLMs in that we compose algorithms symbolically to represent complex knowledge, and perform probabilistic computations. This enables the AI-driven application of statistical models to different problems, while providing the user with a verifiable reasoning path, and an assessment of the uncertainty in each answer. We are developing applications for analysis and research in domains such as Finance, Strategy Consulting, Engineering, and more.

This is a chance to shape a new approach to knowledge representation from the ground up, working alongside a collaborative team driven to solve hard problems.

We’re hiring for the following openings:

* Product Software Engineering (Quantitative Modeling)

* Bayesian Software Engineering

* Program Synthesis Engineering

* Technical Project Manager

* Finance Manager - Corporate & Accounting

Find out more, and apply at: https://planting.space/joinus/

Questions? Get in touch: Email is hidden

Runable | Software Engineer | Bangalore | 60-120K USD depending on the candidate

https://runable.com is an AI suite for everyone. You can create decks, reports, documents, designs, websites etc by just describing what you want.

We are looking for exceptional engineers to join us as we scale. We already process 100 billion+ tokens and billions of requests monthly.

Send your best work to Email is hidden

We don’t do DSA, leetcode etc and have a very hands on approach to interviewing

CrazyGames | https://about.crazygames.com/ | REMOTE (in Europe) | Full-time | Multiple roles

With recent technologies such as WebGPU and WebAssembly, the browser is quickly becoming a powerful gaming platform. High-quality 3D graphics and near-native level performance are now possible without the need for downloads, apps, or platform-specific development. Our browser games platform is already reaching 50 million people per month. We are self-funded, profitable, remote-first, and fast-growing.

We are currently looking for multiple people to bring our engineering, product, data, and adops to the next level.

Please note that we're looking for people who can work on a European timezone and are ideally based in Europe (which includes the UK for those in doubt).

* Product Engineer: https://crazygames.recruitee.com/o/remote-product-engineer-3

* Graphic Designer (Marketing): https://crazygames.recruitee.com/o/remote-graphic-designer-m...

* Product Manager (Game Experience): https://crazygames.recruitee.com/o/remote-product-manager-ga...

* Product Director (Monetization): https://crazygames.recruitee.com/o/remote-product-director-m...

* Programmatic Manager: https://crazygames.recruitee.com/o/programmatic-manager

* Product Marketing Manager: https://crazygames.recruitee.com/o/remote-product-marketing-...

Hack Club | Quality & Integrity Lead, YSWS | Shelburne, Vermont (USA) | ONSITE

Hack Club (https://hackclub.com / https://github.com/hackclub) is a nonprofit where 1,000s of teenagers ship real projects — games, hardware, websites, apps — and we send them free stuff in return. 100k+ teens, 140 countries. Our motto is "by teens, for teens" and we operate with radical trust and transparency.

Every month, thousands of projects come through our You Ship We Ship programs. Program authors do the primary reviews. We need someone to QA the reviewers — a second set of eyes who can tell us: are they making good calls? Catching the fake projects? Being too harsh on legitimate ones?

Responsibilities:

- Spot-check approved projects (random sampling)

- Audit reviewer consistency and catch patterns

- Define what "high quality" actually means and document it

- Train program authors to make better decisions

- Handle appeals and investigations

- Build systems that work at 100k projects/year

You'll still do plenty of hands-on review — you can't spot-check effectively without understanding the projects deeply. But your mission is ensuring the integrity of the entire process, not being the bottleneck for each submission.

$55-70k. 4 weeks PTO. Health/dental/vision. Based in an 1800s building in Shelburne, Vermont. Full details: https://hiring.hackclub.com/38523