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Job description

Reporting into Director of Software Engineering, the Senior Backend Engineer will work within the Global Technology Hub from our Madrid office.

We are seeking an experienced and passionate Senior Backend Engineer for our newly established Technology Hub in Madrid. This is a unique opportunity to become part of the founding team that helps shape the culture, practices, and technical direction. Working in a hybrid model (remote & onsite), you will enjoy significant freedom to innovate and influence the future of one of the world’s largest commercial real estate companies. With the leadership of the Global Technology Hub coming from a background of technology startups, you will benefit from a fast-paced learning environment, high visibility of your contributions and opportunities to shape processes, culture and technology strategies. At the same time, you take advantage of the stability, resources, and reach of a successful global company.

Guided by our global digital strategy, the Madrid Hub collaborates closely with international teams to deliver world-class technology solutions that power the future of commercial real estate.

As Senior Backend Engineer, you specialize in .Net, and will play a key role in designing, developing and maintaining scalable, secure, and high-performance enterprise software solutions. You will contribute to global products and platforms that serve both internal and external customers in Commercial Real Estate across multiple regions. Working closely with international Product, Engineering, DevOps, Data, QA and Architecture teams, you will ensure delivery excellence, software quality and great customer experience.

You are a hands-on problem-solver with strong software design principles, who thrives in a collaborative and agile environment. This role offers the opportunity to influence technical direction and mentor junior engineers while building solutions with real business impact

Essential Functions and Job Duties

Software Development and Design

Implement scalable and maintainable B2B software products using the Microsoft .NET stack (C#, ASP.NET Core)
Contribute to architecture discussions/technology evaluation and participate in system and code reviews.
Help define and adhere to coding standards, documentation and modern software lifecycle best practices, such as SOLID principles, unit testing, CI/CD, and secure coding
Collaborate with product managers, designers, and QA to translate business requirements into technical specifications and user stories.
Participate in sprint planning, backlog refinement and feature grooming to ensure technical feasibility and shared understanding across disciplines

Technical Leadership

Act as a technical mentor to mid-level and junior engineers within your team or project and beyond.
Identify opportunities for technical improvements and advocate for high-quality engineering standards
Participate in design and code review sessions to uphold engineering excellence across the team
Take on technical ownership of production systems
Continuous improvement of agile methodologies and tools

Quality and Performance

Drive culture of test-first development with unit, integration and performance testing
Support root cause analysis and resolution of production issues, ensuring high reliability and uptime
Contribute to ongoing platform refactoring and modernization efforts.

Global Collaboration

Work closely with DevOps and Engineering Operations teams to optimize build pipelines, observability and deployment automation.
Ensure compliance with global standards, information security policies and regulatory requirements
Collaborate regularly with Product Teams, especially Product Owners, to align on requirements, clarify priorities and deliver business value iteratively.

Qualifications

Required Skills/Experience:

8+ years of experience in .NET software development with C# and ASP.NET Core.
Strong knowledge of object-oriented design, microservices architecture and API development (REST/GraphQL)
Experience with SQL and NOSQL databases (e.g. SQL Server or Postgres SQL, Cosmos DB, MongoDB), as well as caching with Redis or similar.
Advanced understanding of cloud-native architectures, CI/CD pipelines and DevOps practices (preferably GCP)
Experience in containerization (Docker, Kubernetes)
Agile Development experience (Scrum/Kanban), including story estimation, code reviews and pair programming.
Experience working in distributed or remote teams and using tools such as Jira, GitHub, Miro and Azure DevOps.
Solid understanding of performance optimization.
Excellent interpersonal and communication skills, fluent in English and Spanish.
Passionate about building high-quality software products with empowered teams.
Understanding of secure development practices and compliance frameworks (e.g. ISO27001, GDPR, SOC2).

Preferred Skills/Experience:

Experience in working in a global, multi-cultural organization.
Exposure to domain-driven design (DDD) and event-driven architecture.
Experience with observability tools (e.g. Sentry, Lighthouse etc.)
Ability to work in a fast-paced, growing tech environment and to foster change in larger organizations.

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