Senior Internal Tooling Engineer

HEY THERE What if the tools you build didn't just help one team, but unlocked the potential of an entire company? At Yazio, we're looking for a Senior Internal Tooling Engineer to turn repetitive work into intelligent systems. You'll help shape how AI is used across the business, building production-ready tools that empower teams to move faster, eliminate manual work and focus on what matters most. If you're excited by solving real problems, shipping AI-powered software/features that create measurable impact and owning your work from idea to production, this is where your expertise will have its greatest impact. This role is 100% remote and open to candidates based in Germany, Spain, Portugal or the U.K. YOUR MISSION Design and ship the internal tools, automations and platforms that remove bottlenecks across Yazio, owning the full stack from web apps to distributed, async job processing systems Drive discovery with internal stakeholders, marketing, localization, user success and others, to uncover their biggest bottlenecks and ship tailored solutions that eliminate manual work Build and scale our AI driven systems, such as our Creative Automation System (automated creative uploads and ad creation) and Content Generation System (production grade AI translations), bringing the latest AI capabilities, LLMs, RAG and agents, into production Apply cutting edge AI to how you work, using agentic coding and AI assistants to build and ship fast while maintaining a high bar for quality and safety Make key technical decisions and design robust, distributed and maintainable architectures, including queuing, asynchronous processing and the reliability our automations depend on Own your work end to end, from scoping and stakeholder alignment through delivery, measurement and iteration, anticipating downstream effects and removing roadblocks proactively Raise the bar for the team, mentor others in software design and process automation, document clearly and help shape how Yazio adopts new AI technology YOUR PROFILE 5+ years building modern web applications end to end, ideally with Go and HTMX (plus Python), and comfortable owning distributed, asynchronous systems (queuing, background processing) High level of hands-on AI knowledge—LLMs, RAG (such as pgvector), prompt engineering, model routing (such as OpenRouter) and frameworks like LangChain—with experience shipping AI-driven features in production Transformative mindset toward AI-based workflows, with a focus on agentic coding: you use AI to boost your productivity while maintaining high software standards Strong track record of end-to-end ownership: you organize delivery from scoping to launch, anticipate downstream effects and act proactively without waiting for permission Pragmatic: you build the smallest valuable piece first, prioritize ruthlessly and leave the code better than you found it even while moving fast True product-engineer mindset: obsessed with the user experience and the "why" behind what you build, comfortable with product metrics and driven to make a measurable impact Excellent communicator who explains complex technical topics clearly to technical and non-technical partners and documents effectively in writing WHY US? An exciting product with millions of users in over 150 countries, driven by our mission to transform the world through healthy eating A remote-first setup: work 100% from home, join a co-working space, or work abroad for several weeks per year 30 vacation days to relax and recharge, plus 5 child sick days if your little one needs you A focus-driven culture that values efficiency over long hours - no overtime expectations, and if it happens, you get that time back! A high-impact environment where your work drives real change - short decision-making processes and no micromanagement A team culture where ambition and balance go hand in hand, supported by strong connections - from our fully covered company retreat to team meetups and virtual coffee breaks Tools and support to do your best work: MacBook, monitor, and €1,000 annual learning budget, plus regular feedback and career development A truly international team with English as our company language and a shared commitment to growth and well-being - supported by Sunday Supplements and Nilo Health DIVERSITY AND INCLUSION At Yazio, we believe that diversity fuels innovation. We are committed to fostering an inclusive environment where everyone, regardless of gender identity, race, religion, age, sexual orientation, or ability, feels valued and empowered. We celebrate different perspectives and actively encourage individuals from all backgrounds to apply. READY TO JOIN US? Excited to take Yazio to the next level and help people worldwide lead healthier lives? We’d love to hear from you! Please send us: Your CV in English A few lines (or a short video if you prefer) about who you are and why you want to work at Yazio Any additional materials that showcase your work (e.g., LinkedIn profile, portfolio)