Senior Backend Engineer: APIs, Cloud & CI/CD

Festo; Barcelona; On-site; EUR 90,000 - 130,000; Full time

Job summary

Festo in Barcelona seeks a Senior Backend Developer to join our IT Digital Marketing team within the Digital Sales Hub. You will design, build, and continuously improve backend services, APIs, databases, and integrations supporting our digital marketing and sales capabilities.

You will develop scalable, secure cloud-hosted solutions, own backend components, collaborate with frontend, product, and platform teams across countries, and help drive engineering standards through code reviews, CI/CD,

Qualifications

• Proficient in backend development with C# and the .NET ecosystem.
• Experience designing and building RESTful APIs and working with relational databases.
• Experience implementing CI/CD pipelines, automated tests, and reliable software delivery.
• Practical experience applying Test-Driven Development (TDD) and maintaining high-quality codebases.
• Agile mindset and practical experience working in Scrum teams.
• Very good written and spoken English.

Responsibilities

• Design, build, and maintain backend services, REST APIs, message-driven services, search capabilities, and database schemas supporting customer-facing digital products.
• Develop business logic, domain services, and data-access layers using C# and .NET with focus on scalability and security.
• Design and implement integrations with external platforms and services (WCMS, DAM, Marketing Automation, Consent Management, Web Analytics).
• Build and improve CI/CD pipelines, automated testing strategies, deployment processes, and quality gates.
• Promote engineering practices such as automated testing, code reviews, versioning, CI, monitoring, and logging.
• Participate in Agile team activities, contribute to planning, estimation, and iterative delivery.
• Produce technical documentation, including architecture decisions, API specs, integration designs, and runbooks.
• Analyse and resolve second-level support cases, identify root causes, and implement sustainable solutions.

Skills

C#

.NET

APIs design

CI/CD

TDD

Agile

English

Tools

Azure

AWS

Terraform

Job description

Festo in Barcelona seeks a Senior Backend Developer to join our IT Digital Marketing team within the Digital Sales Hub. You will design, build, and continuously improve backend services, APIs, databases, and integrations supporting our digital marketing and sales capabilities.

You will develop scalable, secure cloud-hosted solutions, own backend components, collaborate with frontend, product, and platform teams across countries, and help drive engineering standards through code reviews, CI/CD,