Backend Engineer with DevOps Skills (AWS + Kubernetes) - Spain Remote

VoltAI Innovations; A distancia; EUR 40.000; Jornada completa

Descripción de la vacante

A cutting-edge technology firm is seeking a Backend Developer in Spain to design, develop, and operate backend services and cloud infrastructure using AWS and Kubernetes. The ideal candidate will possess strong skills in backend development, particularly with Python, and have a proactive approach in a remote-first environment. This role offers autonomy and the chance to work on projects with real-world impact, alongside a manageable team. A salary of €40,000 gross per year is provided, alongside stock options.

Servicios

High autonomy in technical decisions

Long-term growth opportunity

Small, manageable team

Formación

• Strong experience in backend development using Python, Go, Java, or Node.
• Proficiency with Docker and Kubernetes, including debuggings.
• Hands-on experience in managing AWS resources.

Responsabilidades

• Develop backend services with Python and FastAPI.
• Operate and deploy services on Kubernetes infrastructure.
• Integrate services with cloud-based databases.

Conocimientos

Backend development experience (Python, Go, Java or Node)

Proficiency with Docker

Kubernetes operations experience

AWS knowledge

Understanding of networking fundamentals

Experience with databases (MariaDB, InfluxDB, QuestDB)

Git proficiency

Bash scripting

Experience using AI-assisted coding tools

Herramientas

Docker

Kubernetes

AWS

Descripción del empleo

Design, develop, and operate backend services and cloud infrastructure based on AWS and Kubernetes, ensuring availability, scalability, and security across the platform.

Responsibilities

Backend & Microservices

• Develop and maintain backend services (ideally Python / FastAPI or similar).
• Design APIs, data pipelines, and internal services.
• Integrate services with relational or time-series databases (MariaDB, InfluxDB, QuestDB).

DevOps & Cloud

• Operate and deploy services on Kubernetes (manifests, Helm, Kustomize).
• Build and maintain Docker images and container workflows.
• Implement CI / CD pipelines (GitHub Actions, GitLab CI, Bitbucket Pipelines).
• Manage infrastructure in AWS (IAM, VPC, S3, ECR, EC2 / EKS, CloudWatch).
• Apply Infrastructure-as-Code principles (Terraform or Ansible).

Observability & Security

• Configure logging, metrics, and monitoring (Grafana, Prometheus, Loki, CloudWatch).
• Apply security best practices in deployments, networking, and API design.
• Manage backups, restore procedures, and data retention policies.

Collaboration

• Work closely with engineering and R&D teams to integrate sensors, services, and data sources.
• Document system architecture, data flows, operational procedures, and deployments.
• Proactively propose improvements in cost efficiency, reliability, automation, and developer experience.

Required Skills (Hard Skills)

• Strong experience in backend development (ideally Python; Go, Java, or Node also welcome).
• Proficiency with Docker and secure container image creation.
• Hands‑on experience in Kubernetes operations (manifests, Helm, Kustomize, debugging).
• Solid knowledge of AWS (IAM, VPC, S3, EC2 / EKS, logging / monitoring).
• Good understanding of networking fundamentals: TCP / UDP, firewalls, load balancers, DNS.
• Experience with relational or time-series databases (MariaDB, InfluxDB, QuestDB).
• Comfortable using Git and working with CI / CD pipelines.
• Bash scripting and strong documentation practices.
• Experience using AI‑assisted coding tools (GitHub Copilot, Claude, Cursor, etc.).

Soft Skills

• Self‑starter: able to take initiative and move projects forward independently.
• Team player with strong communication skills.
• Comfortable in remote‑first, distributed working environments.
• Strong ownership mentality: takes responsibility end‑to‑end.
• Able to deliver quickly with solid quality, balancing speed and engineering rigour.
• Comfortable with changing requirements and fast‑paced environments.
• Enjoys fast feedback loops, iterative delivery, and continuous improvement.
• Thrives in a startup environment where flexibility and autonomy matter.

What We Offer

• A technical project with real‑world impact in industrial and research environments.
• High autonomy and direct influence on technical decisions.
• A small, manageable team with low bureaucracy.
• Full remote work.
• A long‑term growth opportunity.

Salary & Compensation

€40,000 gross annual salary

Stock options as part of the long‑term incentive plan

Recruitment Process

• Introductory Interview (30 min) – Get to know each other, discuss your experience, and explain the role and product.
• Take‑Home Technical Test (4–6 hours, to complete within 1 week) – A practical backend / DevOps exercise you complete at your own pace.
• Technical Review Interview (1 hour) – Deep dive into your solution, architecture reasoning, and approach.
• Founders Interview & Cultural Fit (30 min) – Alignment on values, expectations, and working style.
• Final Alignment Call (30 min) – Clarify compensation, logistics, and next steps before the offer.