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Urgent! Senior Full Stack Developer Job Opening In sanlúcar de barrameda – Now Hiring OnchainLabs AG
Help Shape the Future of Digital Ownership
Help Shape the Future of Digital OwnershipAt OnchainLabs , we’re building WalletTwo — the invisible, intuitive wallet infrastructure powering the next generation of digital customer experiences.
From loyalty systems and proof-of-authenticity to digital product passports, our plug-and-play solutions let brands integrate blockchain-backed tools without needing to speak “blockchain.”
We’ve already helped companies like Denario, zai, and CrowdTransfer launch secure, branded wallets — now we’re scaling fast.
And that’s where you come in.
We’re looking for a Senior Full Stack Developer to join us in the heart of our product engine.
You’ll work closely with our CTO and collaborate across our product, design, and blockchain teams to ensure a robust, secure, and scalable infrastructure.
You’ll help us:
• Develop and maintain our backend services and deployment pipelines
• Improve architecture, scalability, and performance across our stack
• Analyze systems and processes to identify and track areas for improvement
• Support the integration of APIs, SDKs, and 3rd party systems
• Enable developers across the team with well-structured CI/CD pipelines
• Drive documentation and transparency in all deployments
What We’re Looking For• Proven experience as a backend or full stack developer
• Strong knowledge of modern backend frameworks (Node.js, Python, or similar)
• Experience with Docker, CI/CD, and infrastructure-as-code tools
• Familiarity with cloud platforms (AWS, GCP, or similar)
• Solid understanding of databases (SQL/NoSQL)
• Highly collaborative, proactive communicator (English is a must)
• Based in a European timezone
No need for prior blockchain dev experience — we’ve got experts for that.
But curiosity about Web3 is always welcome.
• Are located in or near Spain and can occasionally work hybrid with our local team
• Have experience with secure systems or fintech environments
• Enjoy taking ownership of dev processes and mentoring junior engineers
What You Get• Modern, family-friendly flexibility — we believe great work happens when life works too
• 100% remote-first culture with optional hybrid setup if you are near our hub in Sanlúcar, Spain
• Join a mission-driven team building real-world products with visible impact
• Be part of a well-funded startup backed by CHF 5M and growing fast
• Work alongside highly skilled, kind people who care about product, not ego
Ready to redefine the digital customer experience with us?
Send us your LinkedIn, GitHub, or whatever you’re proud of — we’ll take it from there.
✨ Smart • Intelligent • Private • Secure
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Unlock Your Senior Full Potential: Insight & Career Growth Guide
Real-time Senior Full Jobs Trends in sanlúcar de barrameda, Spain (Graphical Representation)
Explore profound insights with Expertini's real-time, in-depth analysis, showcased through the graph below. This graph displays the job market trends for Senior Full in sanlúcar de barrameda, Spain using a bar chart to represent the number of jobs available and a trend line to illustrate the trend over time. Specifically, the graph shows 86441 jobs in Spain and 4480 jobs in sanlúcar de barrameda. This comprehensive analysis highlights market share and opportunities for professionals in Senior Full roles. These dynamic trends provide a better understanding of the job market landscape in these regions.
Great news! OnchainLabs AG is currently hiring and seeking a Senior Full Stack Developer to join their team. Feel free to download the job details.
Wait no longer! Are you also interested in exploring similar jobs? Search now: Senior Full Stack Developer Jobs sanlúcar de barrameda.
An organization's rules and standards set how people should be treated in the office and how different situations should be handled. The work culture at OnchainLabs AG adheres to the cultural norms as outlined by Expertini.
The fundamental ethical values are:The average salary range for a Senior Full Stack Developer Jobs Spain varies, but the pay scale is rated "Standard" in sanlúcar de barrameda. Salary levels may vary depending on your industry, experience, and skills. It's essential to research and negotiate effectively. We advise reading the full job specification before proceeding with the application to understand the salary package.
Key qualifications for Senior Full Stack Developer typically include Other General and a list of qualifications and expertise as mentioned in the job specification. Be sure to check the specific job listing for detailed requirements and qualifications.
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Here are some tips to help you prepare for and ace your job interview:
Before the Interview:To prepare for your Senior Full Stack Developer interview at OnchainLabs AG, research the company, understand the job requirements, and practice common interview questions.
Highlight your leadership skills, achievements, and strategic thinking abilities. Be prepared to discuss your experience with HR, including your approach to meeting targets as a team player. Additionally, review the OnchainLabs AG's products or services and be prepared to discuss how you can contribute to their success.
By following these tips, you can increase your chances of making a positive impression and landing the job!
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