Senior Product / Full-Stack Engineer [3 months contract]

This role is part of our Keyword.com team, one of our growing brands at saas.group.

At Keyword.com, we're a small team with a big mission: helping SEO pros track and boost their rankings across Google and AI search. Our tool cuts through the noise, showing businesses what really matters when it comes to optimizing their digital presence. As part of saas.group, our team is scattered across Europe and looking for innovative minds to join our journey.

As we continue to grow, we're seeking a Senior Product / Full-Stack Engineer to own and deliver end-to-end features that move Keyword.com forward — across our SERP rank tracking core and our newer AI Visibility surface. You won't just write code — you'll identify user problems, prototype solutions, ship features, and iterate based on real usage data. If you're someone who thinks in terms of user outcomes rather than tickets, thrives on autonomy, and is excited about leveraging LLMs to build entirely new product categories, this role is for you.

Your immediate impact in the first 1-3 months will be:

• Become a core member of our product engineering team, shipping user-facing features across the full stack — frontend, backend, and data pipelines
• Improve existing product areas based on customer feedback and usage data, iterating quickly on what matters most to users
• Help shape the roadmap with data-backed opinions on what to build, fix, and prioritize
• Analyze usage patterns to inform development priorities and surface opportunities the team would otherwise miss
• Build LLM-driven workflows and integrations that automate data collection, analysis, and insight generation

• Own product outcomes end-to-end: from identifying user problems and prototyping solutions to shipping, measuring, and iterating
• Build the frontend experiences that surface ranking insights and analytics to users
• Develop scalable backend services and data pipelines to support new product areas and large-scale data processing
• Design and implement LLM-driven workflows — context engineering, API integrations, agentic workflows, and result evaluation at scale
• Analyze usage data and user feedback to prioritize what to build, fix, and improve
• Collaborate closely with the team on product direction — bring opinions, back them with data, and help set priorities
• Write clear documentation for the features you ship, optimized for both human and AI readability

• Node.js (TypeScript), PHP (Laravel), React.js
• MariaDB, ClickHouse, PostgreSQL
• RabbitMQ, Redis, Debezium, Kafka

• 5+ years of full-stack development experience, with a strong track record of shipping user-facing products end-to-end
• Proficiency in Node.js (TypeScript) for backend services; knowledge of other backend languages is a plus
• Experience with a modern frontend framework (React.js or Vue.js)
• Hands-on experience building with LLMs — context engineering, API integrations (OpenAI, Anthropic, etc.), agentic workflows, and evaluation of LLM outputs
• Experience designing and building data pipelines and working with large-scale data processing
• A product mindset: you think about user problems first, not just technical implementation. You form opinions on what to build and why
• Comfort with ambiguity — you can take a vague problem, break it down, prototype fast, and iterate based on feedback
• Strong communication skills — you can explain technical decisions in terms of user and business impact
• Senior-level ownership: you plan meticulously, ship reliably, and proactively identify risks and opportunities

Nice-to-have

• Familiarity with OLAP databases like ClickHouse for analytical workloads
• Background in SEO tools, rank tracking, or search ecosystems
• Experience with web scraping or browser automation
• Experience with AI agent frameworks or building autonomous LLM-powered systems
• History of side projects, open-source contributions, or founding your own product

• Ultimate flexibility: We're 100% remote. You can work from wherever you like, whenever you like.
• Freedom and autonomy: We're a high-trust team, and you'll be given lots of flexibility to solve problems in your own way — with plenty of help from the team when you need it.
• Minimum bureaucracy: We don't like to get bogged down with meetings and red tape. We like to be efficient and keep momentum steady & sustainable.
• Small & friendly team: We help each other out, have fun, and joke around.
• Our network: We are a community of entrepreneurial SaaS professionals that regularly exchange ideas, knowledge, learning and expertise with each other internally.
• Flexible time off: We want you to recharge your batteries when needed.

Think of us as the driving catalyst behind your favorite software success stories. saas.group, established in 2017, is on a mission to turbocharge promising B2B SaaS ventures, unlocking their full potential. As a Software-as-a-Service portfolio powerhouse, we specialize in acquiring small software treasures and polishing them into industry stars. With a dynamic, fully remote team of nearly 350 colleagues spanning 44 countries we are truly global and we are rewriting the playbook on SaaS innovation and collaboration. We grow 20 exciting brands under our umbrella. Feel free to explore our Candidate's Hub to get an insider's view, dive into our culture, gain valuable insights into our teams and how we work.

We don't just simply offer you to "take a job with us" but rather to "join us on this journey" to build the world's largest platform of independent SaaS companies.

Sounds like something you're up for? Feel free to apply even if you don't check all these boxes. We believe in the power of diversity and fresh perspectives to spice up our team. Your application might just be the missing ingredient!