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Senior Full-Stack .NET/React Developer Careers at Unisys - Madrid, Spain | Apply Now!

Unisys

Senior Full-Stack .NET/React Developer Careers at Unisys - Madrid, Spain | Apply Now!

full-timePosted: Feb 17, 2026

Job Description

Senior Full-Stack .NET/React Developer at Unisys - Madrid, Spain

Role Overview

We are seeking a talented and passionate Senior Full-Stack .NET/React Developer to join our dynamic team at Unisys. In this role, you will be responsible for developing and maintaining cloud-based web applications, ensuring high-quality code, and collaborating with cross-functional teams to deliver exceptional features. You will leverage your expertise in .NET Core, C#, React JS, and various database technologies to build robust and scalable solutions.

Day in the Life

As a Senior Full-Stack Developer, your day will be varied and challenging. Here’s a glimpse of what you can expect:

  • Coding and Development: Writing clean, maintainable, and testable code using .NET Core, C#, and React JS. Implementing new features and enhancing existing ones.
  • API Design and Integration: Designing and consuming RESTful APIs to facilitate communication between different components of the application.
  • Database Management: Working with both relational (e.g., PostgreSQL, MySQL) and non-relational (e.g., MongoDB, Cosmos DB) databases to store and retrieve data efficiently.
  • Collaboration: Collaborating with product managers, designers, and other developers to understand requirements and translate them into technical solutions.
  • Code Reviews: Participating in code reviews to ensure code quality and adherence to coding standards.
  • Testing: Writing and maintaining unit and integration tests to ensure high test coverage and application stability.
  • CI/CD: Contributing to CI/CD pipelines to automate the deployment process and ensure continuous delivery.
  • Problem Solving: Identifying and resolving technical issues, debugging code, and optimizing performance.
  • Learning and Development: Staying up-to-date with the latest technologies and trends in full-stack development.
  • Mentoring: Mentoring junior developers and sharing knowledge to foster a collaborative and learning environment.

Why Madrid, Spain?

Madrid is a vibrant and cosmopolitan city that offers a high quality of life. As the capital of Spain, it boasts a rich history, stunning architecture, world-class museums, and a thriving culinary scene. With its excellent public transportation, numerous parks and green spaces, and a friendly atmosphere, Madrid is an ideal place to live and work.

Working from home in Spain offers the flexibility to balance your professional and personal life. You'll have the opportunity to enjoy Spain's beautiful landscapes, diverse culture, and relaxed lifestyle, all while contributing to innovative projects at Unisys. Plus, Spain's central location in Europe makes it easy to travel to other European destinations.

Career Path

At Unisys, we are committed to providing our employees with opportunities for growth and advancement. As a Senior Full-Stack .NET/React Developer, you can progress along several career paths:

  • Technical Lead: Lead a team of developers, providing technical guidance and ensuring the successful delivery of projects.
  • Architect: Design and implement the overall architecture of complex systems, ensuring scalability, performance, and security.
  • Engineering Manager: Manage a team of engineers, providing coaching, mentoring, and performance management.
  • Specialist: Become a subject matter expert in a specific area of full-stack development, such as cloud technologies, microservices, or front-end frameworks.

Salary & Benefits

The estimated salary range for this position in Madrid, Spain is between €55,000 and €85,000 per year. In addition to a competitive salary, Unisys offers a comprehensive benefits package that includes:

  • Health Insurance: Comprehensive medical, dental, and vision coverage.
  • Pension Plan: An attractive pension scheme to help you save for retirement.
  • Paid Time Off: Generous vacation and holiday time, including additional holidays on December 24th and 31st, and the option to buy up to 5 additional vacation days.
  • Learning and Development: Access to a company-owned learning platform and the Unisys University, offering a wide range of training and development opportunities.
  • Employee Assistance Program: A confidential program to support your mental and emotional well-being.
  • Bonus and Recognition Programs: Opportunities to earn bonuses and recognition for your contributions.
  • Life and Accident Insurance: 24/7 life and accident insurance for your peace of mind.
  • Corporate Social Responsibility: Opportunities to participate in meaningful CSR initiatives.

Unisys Culture

At Unisys, we foster a winning culture that values collaboration, innovation, and continuous learning. We are committed to creating an inclusive and diverse workplace where everyone feels valued and respected. We believe that our employees are our greatest asset, and we invest in their growth and development.

Our commitment to Corporate Social Responsibility and Inclusion standards goes far beyond the usual. We strive to make a positive impact on the world through our business practices, community involvement, and environmental stewardship. We are proud to be an equal opportunity employer that considers all qualified applicants without regard to age, caste, citizenship, color, disability, family medical history, family status, ethnicity, gender, gender expression, gender identity, genetic information, marital status, national origin, parental status, pregnancy, race, religion, sex, sexual orientation, or transgender status.

How to Apply

If you are a talented and passionate Senior Full-Stack .NET/React Developer looking for a challenging and rewarding opportunity, we encourage you to apply. Please submit your resume and a cover letter highlighting your relevant experience and skills through the Unisys career portal. We look forward to hearing from you!

FAQ

  1. What technologies do you use? We primarily use .NET Core, C#, React JS, JavaScript/TypeScript, HTML, CSS, and various relational and non-relational databases. We also utilize Docker, Kubernetes, and CI/CD tools.
  2. What is the work environment like? We foster a collaborative and innovative work environment where employees are encouraged to learn and grow.
  3. What opportunities for professional development are available? We offer a company-owned learning platform, access to the Unisys University, and opportunities to attend industry conferences and workshops.
  4. What is the interview process like? The interview process typically involves a phone screening, a technical interview, and a final interview with the hiring manager.
  5. What is the company's policy on remote work? This position is home-based in Spain, offering flexibility and remote work options.
  6. What are the key responsibilities of this role? Key responsibilities include developing and maintaining web applications, designing and consuming APIs, writing unit and integration tests, and collaborating with cross-functional teams.
  7. What are the required qualifications for this role? Required qualifications include 4+ years of experience in full-stack development, strong knowledge of .NET Core, C#, and React JS, and proficiency in JavaScript/TypeScript, HTML, and CSS.
  8. What are the benefits of working at Unisys? Benefits include comprehensive health insurance, an attractive pension scheme, generous paid time off, and opportunities for professional development.
  9. How does Unisys support work-life balance? Unisys values work-life balance and offers flexible work arrangements, additional holidays, and the option to buy additional vacation days.
  10. What is Unisys' commitment to diversity and inclusion? Unisys is committed to creating an inclusive and diverse workplace where everyone feels valued and respected. We are an equal opportunity employer and consider all qualified applicants without regard to age, caste, citizenship, or any other protected characteristic.

Locations

  • Madrid, Spain (Remote)

Salary

Estimated Salary Rangemedium confidence

60,500 - 93,500 EUR / yearly

Source: ai estimated

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • .NET Coreintermediate
  • ASP.NET Coreintermediate
  • C#intermediate
  • React JSintermediate
  • JavaScriptintermediate
  • TypeScriptintermediate
  • HTMLintermediate
  • CSSintermediate
  • Relational Databases (PostgreSQL, MySQL)intermediate
  • Non-Relational Databases (MongoDB, Cosmos DB)intermediate
  • Microservicesintermediate
  • Cloud (Azure, AWS)intermediate
  • Software Testingintermediate
  • Unit Testingintermediate
  • Integration Testingintermediate
  • RESTful APIsintermediate
  • Dockerintermediate
  • Kubernetesintermediate
  • CI/CDintermediate
  • Azure DevOpsintermediate
  • GitHub Actionsintermediate
  • Jenkinsintermediate
  • Server-Side Reactintermediate
  • Node.jsintermediate
  • GitHub Copilotintermediate

Required Qualifications

  • 4+ years of experience in full stack development. (experience)
  • Strong knowledge of .NET Core / ASP.NET Core, C#, and React JS. (experience)
  • Proficiency in JavaScript/TypeScript, HTML, and CSS. (experience)
  • Experience working with relational (e.g., PostgreSQL, MySQL) and non-relational (e.g., MongoDB, Cosmos DB) databases. (experience)
  • Solid understanding/experience of microservices, cloud (Azure or AWS), software testing practices and commitment to maintaining high test coverage. (experience)
  • Good problem-solving skills and attention to detail. (experience)
  • Strong communication in English and teamwork abilities (experience)
  • Experience with Kubernetes and container orchestration (Nice-to-Have) (experience)
  • Familiarity with CI/CD tools (e.g., Azure DevOps, GitHub Actions, Jenkins) (Nice-to-Have) (experience)
  • Exposure to cloud platforms like Azure or AWS (Nice-to-Have) (experience)
  • Understanding microservices architecture (Nice-to-Have) (experience)
  • Knowledge of Server-Side React or Node.js for prototyping purposes (Nice-to-Have) (experience)
  • Experience with GitHub Copilot (Nice-to-Have) (experience)

Responsibilities

  • Develop and maintain full stack cloud based web applications using .NET (C#) and React JS.
  • Write clean, maintainable, and testable code with a strong focus on unit and integration test coverage in a microservice architecture environment
  • Design and consume RESTful APIs and work with both relational and non-relational databases.
  • Collaborate with product managers, designers, and fellow developers to deliver high-quality features.
  • Participate in code reviews, technical discussions, and architectural planning.
  • Contribute to CI/CD pipelines and deployment automation.
  • Support containerized application development using Docker and Kubernetes.
  • Ensure code quality through unit and integration testing.
  • Troubleshoot and debug complex software issues.
  • Stay up-to-date with the latest technologies and trends in full-stack development.
  • Participate in agile development methodologies.
  • Mentor junior developers and share knowledge.

Benefits

  • general: Winning Culture
  • general: Award-winning projects
  • general: High-end technological setting
  • general: Corporate Social Responsibility
  • general: Inclusion standards
  • general: Company learning platform
  • general: Individual potential development
  • general: Wellbeing & Employee Assistance Program
  • general: Mental health support
  • general: Confidential support
  • general: Solid qualification-, performance- & competence-based remuneration model
  • general: Attractive pension scheme
  • general: Various allowances
  • general: Bonus/referral/incentive/recognition programs
  • general: Health program
  • general: 24/7 life and accident insurance
  • general: Additional medical insurance
  • general: Work-life-balance focus
  • general: 2 additional holidays (December 24th and 31st)
  • general: Option to buy up to 5 additional vacation days
  • general: Unisys university additional trainings and workshops

Target Your Resume for "Senior Full-Stack .NET/React Developer Careers at Unisys - Madrid, Spain | Apply Now!" , Unisys

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Tags & Categories

.NETReactFull-StackRemoteSeniorMadridSpainSenior Full-Stack Developer.NET Core DeveloperReact JS DeveloperMadrid jobsSpain jobsRemote Developer jobsC# DeveloperFull Stack DevelopmentWeb Application DevelopmentCloud DevelopmentMicroservices ArchitectureRESTful APIsRelational DatabasesNon-Relational DatabasesDockerKubernetesCI/CD PipelinesAzureAWSSoftware TestingAgile DevelopmentJavaScriptTypeScriptHTMLCSSUnisys careersDeveloper jobs MadridSenior Developer jobs SpainRemote .NET Developer .NET CoreASP.NET CoreReact.jsSoftware EngineerWeb DevelopmentCloud ComputingMadrid Technology JobsSpain IT JobsIT ServicesCloud ComputingCybersecurityConsulting

Answer 10 quick questions to check your fit for Senior Full-Stack .NET/React Developer Careers at Unisys - Madrid, Spain | Apply Now! @ Unisys.

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~2 Minutes
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Unisys logo

Senior Full-Stack .NET/React Developer Careers at Unisys - Madrid, Spain | Apply Now!

Unisys

Senior Full-Stack .NET/React Developer Careers at Unisys - Madrid, Spain | Apply Now!

full-timePosted: Feb 17, 2026

Job Description

Senior Full-Stack .NET/React Developer at Unisys - Madrid, Spain

Role Overview

We are seeking a talented and passionate Senior Full-Stack .NET/React Developer to join our dynamic team at Unisys. In this role, you will be responsible for developing and maintaining cloud-based web applications, ensuring high-quality code, and collaborating with cross-functional teams to deliver exceptional features. You will leverage your expertise in .NET Core, C#, React JS, and various database technologies to build robust and scalable solutions.

Day in the Life

As a Senior Full-Stack Developer, your day will be varied and challenging. Here’s a glimpse of what you can expect:

  • Coding and Development: Writing clean, maintainable, and testable code using .NET Core, C#, and React JS. Implementing new features and enhancing existing ones.
  • API Design and Integration: Designing and consuming RESTful APIs to facilitate communication between different components of the application.
  • Database Management: Working with both relational (e.g., PostgreSQL, MySQL) and non-relational (e.g., MongoDB, Cosmos DB) databases to store and retrieve data efficiently.
  • Collaboration: Collaborating with product managers, designers, and other developers to understand requirements and translate them into technical solutions.
  • Code Reviews: Participating in code reviews to ensure code quality and adherence to coding standards.
  • Testing: Writing and maintaining unit and integration tests to ensure high test coverage and application stability.
  • CI/CD: Contributing to CI/CD pipelines to automate the deployment process and ensure continuous delivery.
  • Problem Solving: Identifying and resolving technical issues, debugging code, and optimizing performance.
  • Learning and Development: Staying up-to-date with the latest technologies and trends in full-stack development.
  • Mentoring: Mentoring junior developers and sharing knowledge to foster a collaborative and learning environment.

Why Madrid, Spain?

Madrid is a vibrant and cosmopolitan city that offers a high quality of life. As the capital of Spain, it boasts a rich history, stunning architecture, world-class museums, and a thriving culinary scene. With its excellent public transportation, numerous parks and green spaces, and a friendly atmosphere, Madrid is an ideal place to live and work.

Working from home in Spain offers the flexibility to balance your professional and personal life. You'll have the opportunity to enjoy Spain's beautiful landscapes, diverse culture, and relaxed lifestyle, all while contributing to innovative projects at Unisys. Plus, Spain's central location in Europe makes it easy to travel to other European destinations.

Career Path

At Unisys, we are committed to providing our employees with opportunities for growth and advancement. As a Senior Full-Stack .NET/React Developer, you can progress along several career paths:

  • Technical Lead: Lead a team of developers, providing technical guidance and ensuring the successful delivery of projects.
  • Architect: Design and implement the overall architecture of complex systems, ensuring scalability, performance, and security.
  • Engineering Manager: Manage a team of engineers, providing coaching, mentoring, and performance management.
  • Specialist: Become a subject matter expert in a specific area of full-stack development, such as cloud technologies, microservices, or front-end frameworks.

Salary & Benefits

The estimated salary range for this position in Madrid, Spain is between €55,000 and €85,000 per year. In addition to a competitive salary, Unisys offers a comprehensive benefits package that includes:

  • Health Insurance: Comprehensive medical, dental, and vision coverage.
  • Pension Plan: An attractive pension scheme to help you save for retirement.
  • Paid Time Off: Generous vacation and holiday time, including additional holidays on December 24th and 31st, and the option to buy up to 5 additional vacation days.
  • Learning and Development: Access to a company-owned learning platform and the Unisys University, offering a wide range of training and development opportunities.
  • Employee Assistance Program: A confidential program to support your mental and emotional well-being.
  • Bonus and Recognition Programs: Opportunities to earn bonuses and recognition for your contributions.
  • Life and Accident Insurance: 24/7 life and accident insurance for your peace of mind.
  • Corporate Social Responsibility: Opportunities to participate in meaningful CSR initiatives.

Unisys Culture

At Unisys, we foster a winning culture that values collaboration, innovation, and continuous learning. We are committed to creating an inclusive and diverse workplace where everyone feels valued and respected. We believe that our employees are our greatest asset, and we invest in their growth and development.

Our commitment to Corporate Social Responsibility and Inclusion standards goes far beyond the usual. We strive to make a positive impact on the world through our business practices, community involvement, and environmental stewardship. We are proud to be an equal opportunity employer that considers all qualified applicants without regard to age, caste, citizenship, color, disability, family medical history, family status, ethnicity, gender, gender expression, gender identity, genetic information, marital status, national origin, parental status, pregnancy, race, religion, sex, sexual orientation, or transgender status.

How to Apply

If you are a talented and passionate Senior Full-Stack .NET/React Developer looking for a challenging and rewarding opportunity, we encourage you to apply. Please submit your resume and a cover letter highlighting your relevant experience and skills through the Unisys career portal. We look forward to hearing from you!

FAQ

  1. What technologies do you use? We primarily use .NET Core, C#, React JS, JavaScript/TypeScript, HTML, CSS, and various relational and non-relational databases. We also utilize Docker, Kubernetes, and CI/CD tools.
  2. What is the work environment like? We foster a collaborative and innovative work environment where employees are encouraged to learn and grow.
  3. What opportunities for professional development are available? We offer a company-owned learning platform, access to the Unisys University, and opportunities to attend industry conferences and workshops.
  4. What is the interview process like? The interview process typically involves a phone screening, a technical interview, and a final interview with the hiring manager.
  5. What is the company's policy on remote work? This position is home-based in Spain, offering flexibility and remote work options.
  6. What are the key responsibilities of this role? Key responsibilities include developing and maintaining web applications, designing and consuming APIs, writing unit and integration tests, and collaborating with cross-functional teams.
  7. What are the required qualifications for this role? Required qualifications include 4+ years of experience in full-stack development, strong knowledge of .NET Core, C#, and React JS, and proficiency in JavaScript/TypeScript, HTML, and CSS.
  8. What are the benefits of working at Unisys? Benefits include comprehensive health insurance, an attractive pension scheme, generous paid time off, and opportunities for professional development.
  9. How does Unisys support work-life balance? Unisys values work-life balance and offers flexible work arrangements, additional holidays, and the option to buy additional vacation days.
  10. What is Unisys' commitment to diversity and inclusion? Unisys is committed to creating an inclusive and diverse workplace where everyone feels valued and respected. We are an equal opportunity employer and consider all qualified applicants without regard to age, caste, citizenship, or any other protected characteristic.

Locations

  • Madrid, Spain (Remote)

Salary

Estimated Salary Rangemedium confidence

60,500 - 93,500 EUR / yearly

Source: ai estimated

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • .NET Coreintermediate
  • ASP.NET Coreintermediate
  • C#intermediate
  • React JSintermediate
  • JavaScriptintermediate
  • TypeScriptintermediate
  • HTMLintermediate
  • CSSintermediate
  • Relational Databases (PostgreSQL, MySQL)intermediate
  • Non-Relational Databases (MongoDB, Cosmos DB)intermediate
  • Microservicesintermediate
  • Cloud (Azure, AWS)intermediate
  • Software Testingintermediate
  • Unit Testingintermediate
  • Integration Testingintermediate
  • RESTful APIsintermediate
  • Dockerintermediate
  • Kubernetesintermediate
  • CI/CDintermediate
  • Azure DevOpsintermediate
  • GitHub Actionsintermediate
  • Jenkinsintermediate
  • Server-Side Reactintermediate
  • Node.jsintermediate
  • GitHub Copilotintermediate

Required Qualifications

  • 4+ years of experience in full stack development. (experience)
  • Strong knowledge of .NET Core / ASP.NET Core, C#, and React JS. (experience)
  • Proficiency in JavaScript/TypeScript, HTML, and CSS. (experience)
  • Experience working with relational (e.g., PostgreSQL, MySQL) and non-relational (e.g., MongoDB, Cosmos DB) databases. (experience)
  • Solid understanding/experience of microservices, cloud (Azure or AWS), software testing practices and commitment to maintaining high test coverage. (experience)
  • Good problem-solving skills and attention to detail. (experience)
  • Strong communication in English and teamwork abilities (experience)
  • Experience with Kubernetes and container orchestration (Nice-to-Have) (experience)
  • Familiarity with CI/CD tools (e.g., Azure DevOps, GitHub Actions, Jenkins) (Nice-to-Have) (experience)
  • Exposure to cloud platforms like Azure or AWS (Nice-to-Have) (experience)
  • Understanding microservices architecture (Nice-to-Have) (experience)
  • Knowledge of Server-Side React or Node.js for prototyping purposes (Nice-to-Have) (experience)
  • Experience with GitHub Copilot (Nice-to-Have) (experience)

Responsibilities

  • Develop and maintain full stack cloud based web applications using .NET (C#) and React JS.
  • Write clean, maintainable, and testable code with a strong focus on unit and integration test coverage in a microservice architecture environment
  • Design and consume RESTful APIs and work with both relational and non-relational databases.
  • Collaborate with product managers, designers, and fellow developers to deliver high-quality features.
  • Participate in code reviews, technical discussions, and architectural planning.
  • Contribute to CI/CD pipelines and deployment automation.
  • Support containerized application development using Docker and Kubernetes.
  • Ensure code quality through unit and integration testing.
  • Troubleshoot and debug complex software issues.
  • Stay up-to-date with the latest technologies and trends in full-stack development.
  • Participate in agile development methodologies.
  • Mentor junior developers and share knowledge.

Benefits

  • general: Winning Culture
  • general: Award-winning projects
  • general: High-end technological setting
  • general: Corporate Social Responsibility
  • general: Inclusion standards
  • general: Company learning platform
  • general: Individual potential development
  • general: Wellbeing & Employee Assistance Program
  • general: Mental health support
  • general: Confidential support
  • general: Solid qualification-, performance- & competence-based remuneration model
  • general: Attractive pension scheme
  • general: Various allowances
  • general: Bonus/referral/incentive/recognition programs
  • general: Health program
  • general: 24/7 life and accident insurance
  • general: Additional medical insurance
  • general: Work-life-balance focus
  • general: 2 additional holidays (December 24th and 31st)
  • general: Option to buy up to 5 additional vacation days
  • general: Unisys university additional trainings and workshops

Target Your Resume for "Senior Full-Stack .NET/React Developer Careers at Unisys - Madrid, Spain | Apply Now!" , Unisys

Get personalized recommendations to optimize your resume specifically for Senior Full-Stack .NET/React Developer Careers at Unisys - Madrid, Spain | Apply Now!. Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Senior Full-Stack .NET/React Developer Careers at Unisys - Madrid, Spain | Apply Now!" , Unisys

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

.NETReactFull-StackRemoteSeniorMadridSpainSenior Full-Stack Developer.NET Core DeveloperReact JS DeveloperMadrid jobsSpain jobsRemote Developer jobsC# DeveloperFull Stack DevelopmentWeb Application DevelopmentCloud DevelopmentMicroservices ArchitectureRESTful APIsRelational DatabasesNon-Relational DatabasesDockerKubernetesCI/CD PipelinesAzureAWSSoftware TestingAgile DevelopmentJavaScriptTypeScriptHTMLCSSUnisys careersDeveloper jobs MadridSenior Developer jobs SpainRemote .NET Developer .NET CoreASP.NET CoreReact.jsSoftware EngineerWeb DevelopmentCloud ComputingMadrid Technology JobsSpain IT JobsIT ServicesCloud ComputingCybersecurityConsulting

Answer 10 quick questions to check your fit for Senior Full-Stack .NET/React Developer Careers at Unisys - Madrid, Spain | Apply Now! @ Unisys.

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.