Senior Python Data & Web Developer

Location: Spain (Preferred: Seville)
Experience Required: 5+ Years
Language: Spanish (Native), English (Minimum B2 Level)
Employment Type: Full-Time / Contract or Permanent
Daily rate: 368€
Full remote in the beginning is possible

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About the Role

We are looking for a Senior Python Data & Web Developer to join a dynamic team focused on building scalable data-driven applications and analytics platforms. The successful candidate will have strong expertise in Python development, data processing, modern web technologies, and cloud-native deployment practices.

You will be involved in the full software development lifecycle, from designing and developing applications to deploying and maintaining solutions in containerized and cloud environments.

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Key Responsibilities

• Design, develop, and maintain Python-based web applications using Plotly Dash and Flask.
• Build and optimize robust data processing pipelines using Pandas and NumPy.
• Develop and maintain integrations with SQL databases.
• Design, build, and deploy containerized applications using Docker and related technologies.
• Implement and maintain CI/CD pipelines using GitHub Actions.
• Collaborate with data engineers, data scientists, architects, and product stakeholders to deliver business-critical solutions.
• Ensure software quality through testing, code reviews, and best development practices.
• Participate in architecture discussions and contribute to technical design decisions.
• Monitor application performance and troubleshoot production issues.
• Produce technical documentation and support knowledge-sharing initiatives.

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Required Skills & Experience

Technical Skills

• Strong Python programming experience (5+ years).
• Proven experience with:
  • Plotly Dash
  • Flask
  • Pandas
  • NumPy
• Solid experience working with SQL databases (PostgreSQL, SQL Server, MySQL, or similar).
• Experience developing and deploying containerized applications.
• Hands-on experience with GitHub Actions and CI/CD implementation.
• Strong understanding of software engineering principles, design patterns, and coding best practices.
• Experience working in Agile/Scrum environments.

Language Skills

• Professional English communication skills (minimum B2 level).

Professional Experience

• Minimum 5 years of relevant professional experience in Python software development and data-driven application development.

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Nice-to-Have Skills (Added Value)

The following skills are considered a strong advantage:

Cloud & Infrastructure

• AWS services:
  • ECR (Elastic Container Registry)
  • ECS (Elastic Container Service)
  • EKS (Elastic Kubernetes Service)
• Terraform and Infrastructure as Code (IaC).

Data Platforms

• Dataiku
• Snowflake

Security & Authentication

• Enterprise authentication solutions:
  • OAuth2
  • JWT

Monitoring & Observability

• Datadog
• Application monitoring and performance management platforms.

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Personal Skills

• Strong analytical and problem-solving mindset.
• Excellent communication and stakeholder management skills.
• Ability to work independently and within cross-functional teams.
• Proactive attitude with a focus on quality and continuous improvement.
• Strong organizational and documentation skills.

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What We Offer

• Opportunity to work on innovative data and analytics solutions.
• Collaborative international environment.
• Exposure to modern cloud-native and data technologies.
• Flexible working arrangements.
• Long-term growth and professional development opportunities.

Location Preference: Candidates based in Seville (Spain) are strongly preferred, although other locations within Spain may be considered.