The English-language job board for Spain

Back-end .NET Developer

On-site in Málaga·Added 3 months ago (last checked 4 Nov)

SD Worx

34 open roles

Apply

Our summary

Work mode: On-site, Málaga
English: Required
Experience: 5+ years
Benefits: Private health insurance

Visa options

The ad doesn’t mention sponsorship
Not a refusal, but not a yes. Worth asking in your first message.

Find jobs with visa support

Skills

Requirements

What we're looking for

Minimum 5 years of hands-on experience developing back-end applications with .NET Framework, .NET Core, and C#.
Strong understanding of software development principles, application architecture, and integration patterns.
Experience building and consuming REST and SOAP services.
Solid knowledge of SQL Server, Entity Framework, and database design best practices.
Experience writing Unit and Integration Tests as part of a quality-driven development approach.
Ability to translate business requirements into scalable and maintainable technical solutions.
Excellent analytical, problem-solving, and troubleshooting skills.
Strong communication skills in English and ability to collaborate effectively with technical and business stakeholders.
Experience working in Agile teams and international environments.
A proactive, self-starting mindset with a passion for continuous learning and improvement.
Ability to manage multiple priorities while maintaining high quality standards.

Pay & benefits

What you'll get

🏝️ Comprehensive training and development programs.

🏝️ Flexible working schedule

🏝️ Private medical insurance 100% covered by SD Worx

🏝️ 25 vacation days

🏝️ 18 hours for personal matters

🏝️ Reduced summer hours: 36 hours instead of 40 per week, for 4 weeks (to be chosen in July or August)

🏝️ Cobee flexible retribution options: meals, transportation, etc.

🏝️ Laptop and equipment provided

🏝️ Workation: possibility to work from abroad (where SD Worx has legal entity, up to 4 weeks per year)

🏝️ Learning opportunities: language courses (as per availability), individual training bonus, an individual development plan, and professional training

🏝️ Career growth: whether you want to become more of an expert in your field or want to expand your knowledge more horizontally, there is always room to grow within SD Worx!

The role

SD Worx is a leading European provider of Payroll & HR services with global reach. We have offices across Europe and in Mauritius. Our purpose is to bring people solutions to life, enabling organisations of all sizes to turn Human Resources into a source of value for both the business and its people.

Our people solutions cover the entire employee journey - from getting people paid to attracting, rewarding and developing talent.

What you'll do

About the role:

We are seeking a Senior Back-end .NET Developer to join our Corporate Data Management (CDM) team within the Data & AI organization at SD Worx. The team is responsible for ensuring central, well-integrated corporate data across the enterprise and enabling seamless data flows between business-critical systems. This is a growth position created to strengthen our long-term in-house .NET development capabilities and support strategic initiatives such as Master Data Management and integrations with enterprise platforms. You will play a key role in designing, developing, and maintaining backend solutions that support data integration, business processes, and enterprise applications across the organization. The ideal candidate is a hands-on developer with strong .NET expertise, a proactive mindset, and the ability to collaborate effectively with technical and business stakeholders.

Design, develop, and maintain back-end applications using .NET Framework, .NET Core and C#.
Develop and support integrations between corporate systems, legacy applications, and data platforms.
Contribute to the implementation of the Master Data Management (MDM 2.0) initiative and related integration projects.
Deliver high-quality software in line with agreed timelines, standards, and best practices.
Perform root cause analysis, troubleshoot issues, and drive resolution of defects.
Write, maintain, and execute unit and integration tests as part of the development lifecycle.
Conduct code reviews and contribute to continuous improvements in code quality.
Collaborate with Product Owners, Technical Leads, and cross-functional teams to translate business requirements into technical solutions.
Ensure solutions are scalable, maintainable, and aligned with architectural guidelines.
Support CI/CD processes and application deployment activities.
Create and maintain technical documentation, development standards, and solution designs.
Take ownership of development activities and proactively identify areas for process and system improvements.
What do you have to offer?

What do you have to offer?

What do we have to offer?

Additional information

From many places, we work as one, moving from better to best together.

Hiring process

3 steps5 interviewsa task to do

Application
Recruiter interview
With a recruiter
A phone or video interview if your profile matches the role.
Interviews with the hiring manager
With hiring manager and key stakeholders · 1–3 sessions
Meet the hiring manager and possibly other key stakeholders.
Case interview or assessment
Not every role
Included for some roles.
Reference checks
Job offer

SD Worx says it usually responds to applications within a week.

About SD Worx

SD Worx is a European HR and payroll services provider headquartered in Antwerp, Belgium. The company specializes in payroll administration, HR administration, and related software solutions, operating across multiple European countries with a strong focus on local expertise and compliance. With a workforce of several thousand employees, SD Worx serves a wide range of clients, from small businesses to large international corporations, and is recognized as a leading player in the European HR services market.

SD Worx has a significant presence in Spain, with offices in Madrid and Barcelona, where they deliver payroll and HR services to both Spanish and international companies. The company is known for its international and multicultural work environment, actively hiring professionals from across Europe, including roles for SAP SuccessFactors consultants, payroll specialists, and HR operations staff. For international professionals, SD Worx offers opportunities to work in a dynamic, cross-border environment, leveraging their language skills (e.g., German, French, Dutch, Finnish, Norwegian, Danish) and expertise in various HR and payroll systems, making it an attractive employer for those looking to build a career in the European HR tech sector.

Industry: HR Payroll
Founded: 1945
Employees: 5,000–10,000
Headquarters: Antwerp, Belgium
In Spain: Madrid, Barcelona

Good to know if you are moving

SD Worx actively hires international professionals, with many roles explicitly requiring language skills such as German, French, Dutch, Finnish, Norwegian, or Danish, making it accessible for non-Spanish speakers.
The company has a strong presence in Spain (Madrid and Barcelona), offering opportunities to work on Spanish payroll projects while being part of a European-wide organization.
Many roles are client-facing and require fluency in a specific European language, so language skills are a key asset for international candidates.
The company offers a multicultural and multilingual work environment, with teams spread across Europe.
SD Worx provides a clear career path in HR and payroll consulting, with opportunities to specialize in SAP SuccessFactors, SAP HCM, and other HR technologies.

In their own words

Additional information

SD Worx embraces diversity in the workplace. Diversity brings inspiration and innovation to our company. We particularly welcome applications from qualified talent, regardless of origin, nationality, gender, skin color, ethnic and social background, religion, age, disability, sexual orientation, or stage of life.

Salary range information will be shared with candidates during the initial interaction with the Talent Acquisition team, either by phone or email.

All hiring decisions are made based on skills, experience and role‑related qualifications.

All open roles at SD Worx