Seo jobs in Spain

Full-stack developer who values independence and wants to grow further

We’re looking for a senior full‑stack developer with a focus on 60% backend and 40% frontend and motivated to grow their expertise in Python and Rust.

100% Remote. You can choose your place of work in the EU.

Work hours. Flexible working hours.

Salary. Competitive package aligned with your experience and skills.

Job stability. Long term marketing agencies and e-commerce companies in the EU.

No Process Chaos. Documentation and procedures are already well‑structured and digital.

Small Team. You will build the IT team with Walter (CTO), Chris (Principal Software Engineer), and Alex (DevOps).

Mindset. We’re looking to hire colleagues who align with our growth plans.

Work Style. Hands‑on. Highly organized, with a focus on technical automation and solutions.

Company. No external investors. One of the fastest‑growing e‑commerce companies in the EU.

Politics. None. We make our decisions within 24 hours.

Product. Personalized Google Comparison Shopping Services (CSS) for agencies and online shops.

Hardware. You’ll get everything you need.

Tech Stack : https : / / stackshare.io / adstrong / adstrong

Missing anything? Feel free to mention it in your cover letter—we’ll see if we can make it happen!

• Take full ownership of tasks : design, build, test, deploy, monitor.
• From scratch to production — development of core customer‑facing products.
• Automating everything : from infrastructure (IaC) to deployments.
• Getting hands‑on with code — Python, Rust, Next.js are our go‑tos.
• Shape architecture and API design with a backend‑first focus.
• Deliver frontend features with React + Next.js that feel seamless to users.
• Build price comparison platforms that help users shop smarter.

• Professional Experience. At least 5 years of experience as a full‑stack developer.
• Knowledge. Proven record of delivering real‑world production apps.
• Backend Experience. You have strong backend experience with Node.js + SQL.
• Architecture. You have designed and delivered backend solutions, making informed decisions on architecture, database selection, scalability, and cost‑efficiency while understanding key system design trade‑offs.
• AWS Experience. You have hands‑on experience deploying and running applications on AWS.
• Search Infrastructure. You have practical experience designing, maintaining, or optimizing search and indexing systems such as Elasticsearch, Open Search, or comparable technologies.
• Frontend Skills. You have frontend skills with React, Next.js, and TypeScript.
• CI / CD Expertise. You have hands‑on experience designing and maintaining CI / CD pipelines and know how to use Docker effectively.
• Production Debugging Skills. Logs, monitoring, issue tracing.
• Learning. You have the willingness to expand into Rust or Python.
• Thinking. You bring an entrepreneurial mindset, approaching tasks with structure and a smart use of resources.
• Communication. Your transparent communication supports our team and product development.
• Education. You successfully completed your bachelor's degree in computer engineering or similar.

• English (C1- C2)

Did you work with SEO, AI coding tools, or do you have UI awareness? That’s a plus!

b-good GmbH with the brand adstrong.com has made it its mission to support brands, agencies, and Amazon sellers in optimizing their sales potential via Google Shopping solutions. Our award‑winning CSS company (Google's price comparison portal), based in Munich and Berlin, is fully self‑funded, consistently exceeds its performance targets and continues to expand. adstrong is becoming one of the fastest growing online e‑commerce service providers, working with over 5,000 online shops across Europe. We have already generated over 100 million euros in additional sales for our partners.

We look forward to hearing from you!