Microsoft Back-end Engineer – Cloud & Integration

Outtask is a globally established company with over 25 years of experience in IT. Our Spanish office, located in Valencia, focuses on creating highly specialized tech teams that tackle complex challenges for the world's industry leaders.

We have a deeply rooted people focused culture and are a completely flat organization.

Creativity, innovation, and perseverance are our core values and are reflected in our entire team.

We’re hiring a full-time Backend Developer with experience in modern Microsoft technical stack software engineering, backend integration, and cloud-native systems.

You'll play a key role in building scalable backend services and robust integrations that drive operational efficiency and enhance our digital capabilities.

This position requires strong backend engineering skills along with integration experience to support secure, reliable communication between platforms. English is the corporate language and spoken proficiency is required for effective team and customer collaboration.

Your Responsibilities

Design, prototype, and develop backend and middleware components using .NET 8 and C#

Build & maintain secure REST APIs and automation layers to support internal and external integrations

Create and maintain unit and integration tests to ensure code quality and resilience

Implement testable, scalable , and robust software using established architectural patterns

Ensure service reliability with structured logging , distributed tracing , and health checks

Support and guide partners and customers on backend integration challenges

Collaborate in agile teams with architects, developers, and product stakeholders

Technical Skills

Proficiency in C# and .NET 8 / X for building distributed backend systems

You routinely integrate AI coding assistants (e.g., GitHub Copilot , Cursor , or equivalents) into your workflow to automate boilerplate, refactors, and tests—shipping faster and writing cleaner code

Strong experience with PostgreSQL or other relational databases

Solid understanding of CQRS , publisher-subscriber , factory , and other key design patterns

Familiarity with dependency injection and modular service architecture

Secure API design using JWT , OpenID Connect , and authentication middleware

Hands-on experience with Swagger / OpenAPI , Polly for resiliency, and Git for version control

Proficient in deploying and operating containerized services with Kubernetes

Experience using Azure Service Bus or other enterprise messaging solutions

Working knowledge of cloud platforms , especially Azure

Familiarity with Datadog , Serilog , OpenTracing , and related observability tools

Soft Skills

Strong interpersonal and communication skills in English

Excellent analytical and troubleshooting abilities

Proactive mindset and ability to independently manage tasks and deliverables

Comfortable working in agile development environments

Position Details

Role : Full-time

Experience : 1 medior + 1 senior in backend development and system integration.

Languages : English (corporate language)

Must have a Spanish residence and work permit and / or a European passport already (we will not evaluate candidates without this legal requirement in order to speed up the hiring process this time)