Senior Backend Engineer; Remote from

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Backend Engineer in Spain.

This role offers the opportunity to lead the development and optimization of backend systems for a cutting-edge Web3 platform, powering multi-chain DeFi solutions for financial institutions and fintechs. You will design, build, and maintain scalable, robust, and secure backend architecture, ensuring high performance across a complex blockchain ecosystem. Collaborating closely with product, frontend, and design teams, you will influence the technical direction and quality of the platform.

The position allows you to implement best practices, mentor junior engineers, and contribute to the evolution of cloud-native, containerized infrastructure. You will work in a fast-paced, innovative environment, solving challenging technical problems while shaping the backend foundation for global DeFi services.

• Lead and actively participate in designing, developing, and maintaining backend systems and APIs
• Architect scalable and robust solutions capable of handling growing user loads and multi-chain transactions
• Ensure code quality through reviews, adherence to best practices, and maintainability standards
• Identify performance bottlenecks and optimize code and algorithms for high efficiency
• Implement monitoring and debugging tools to maintain high system availability
• Develop and maintain comprehensive test suites (unit, integration, end-to-end) for reliable systems
• Provide guidance and mentorship to junior developers, sharing technical knowledge and best practices
• Analyze complex technical problems and propose effective, practical solutions
• Document code, APIs, and processes to facilitate team knowledge sharing and onboarding

• Extensive professional experience as a Senior or Lead Backend Engineer, ideally in blockchain/Web3 environments
• Strong expertise with Type Script and Node.js in containerized environments (Docker)
• Solid understanding of document databases (Mongo
  
  DB) and caching mechanisms (Redis)
• Experience with blockchain ecosystems, preferably EVM and Stellar networks, including production deployments
• Knowledge of software design, system architecture, and cloud-native infrastructure (AWS, Kubernetes)
• Familiarity with Git Ops workflows, CI/CD, and monitoring best practices
• Excellent communication, collaboration, problem-solving, and analytical skills
• Proactive, autonomous, and able to thrive in a fast-paced, distributed team environment
• Strong written and verbal English skills for effective cross-functional collaboration
• Bonus: experience with Stellar’s Soroban smart contracts and a Bachelor’s/Master’s in Computer Science

• Permanent, full-time remote contract (EMEA or APAC with EU overlap)
• Salary: €90,000–€130,000 per year
• 30 days of PTO and flexible working hours
• Equity participation from day one
• Annual team offsites
• Choice of work computer and equipment budget
• €1,000 personal development budget (after 6 months, pro-rated for first year)
• One-time €1,000 remote setup budget for coworking or home office

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team.

We appreciate your interest and wish you the best!

Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time.

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