Hiring.fm
Celonis

Senior Full-Stack Software Engineer

Madrid, Spain Full Time

We're Celonis, the global leader in Process Intelligence technology and one of the world's fastest-growing SaaS firms. We believe there is a massive opportunity to unlock productivity by placing AI, data and intelligence at the core of business processes - and for that, we need your help. Care to join us?

The Team

The Team is part of Orchestration Engine & Actions organization mainly focused on data and built-in actions.  The Orchestration Engine & Actions organization is dedicated to building scalable, reliable, and high-performance solutions that power critical operational workflows. Our team focuses on developing features that enable seamless execution of operational use cases, ensuring efficiency, automation, and flexibility for our customers. We work closely with cross-functional teams to drive innovation and deliver impactful solutions that enhance the overall orchestration experience.

The Role

As a Senior Full Stack Software Engineer, you will play a key role in designing, building, and maintaining high-quality, scalable software solutions across the stack. You’ll contribute to both frontend and backend systems, ensuring seamless integration, performance, and reliability. You will collaborate closely with product managers, designers, and other engineers to translate business requirements into effective technical solutions that deliver exceptional user experiences.

Your experience in modern software development practices, code quality, and system design will help drive the team toward technical excellence. You’ll also mentor junior engineers, share best practices, and contribute to continuous improvement in engineering standards and workflows.

Key Responsibilities

  • Design, develop, and maintain scalable, high-quality software solutions across the frontend and backend.
  • Collaborate with product managers, designers, and cross-functional teams to translate business requirements into technical implementations.
  • Ensure system reliability, security, and performance through thoughtful design and testing.
  • Write clean, maintainable, and efficient code following best practices and coding standards.
  • Participate in code reviews to ensure code quality, knowledge sharing, and adherence to architectural guidelines.
  • Contribute to system architecture discussions and help shape technical direction within the team.
  • Mentor and support junior engineers, fostering a culture of learning and technical excellence.
  • Troubleshoot, debug, and optimize existing systems to improve performance and user experience..

Qualifications

  • 5+ years of professional experience developing and maintaining full-stack applications.
  • Strong proficiency in one or more backend languages (Java and NodeJs or others).
  • Solid experience with modern frontend frameworks (Angular and/or React).
  • Familiarity with RESTful APIs and microservices architectures.
  • Experience with relational and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB).
  • Understanding of cloud environments and deployment tools (e.g., AWS, Docker, Kubernetes, CI/CD pipelines).
  • Proven ability to write well-tested, maintainable, and scalable code.
  • Excellent problem-solving skills, attention to detail, and a collaborative mindset.
  • Strong communication skills and ability to work effectively in cross-functional teams.

What Celonis Can Offer You:

  • Pioneer Innovation: Work with the leading, award-winning process mining technology, shaping the future of business.
  • Accelerate Your Growth: Benefit from clear career paths, internal mobility, a dedicated learning program, and mentorship opportunities.
  • Receive Exceptional Benefits: Including generous PTO, hybrid working options, company equity (RSUs), comprehensive benefits, extensive parental leave, dedicated volunteer days, and much more. Interns and working students explore your benefits here.
  • Prioritize Your Well-being: Access to resources such as gym subsidies, counseling, and well-being programs.
  • Connect and Belong: Find community and support through dedicated inclusion and belonging programs.
  • Make Meaningful Impact: Be part of a company driven by strong values that guide everything we do: Live for Customer Value, The Best Team Wins, We Own It, and Earth Is Our Future.
  • Collaborate Globally: Join a dynamic, international team of talented individuals.
  • Empowered Environment: Contribute your ideas in an open culture with autonomous teams.

About Us:

Celonis makes processes work for people, companies and the planet. The Celonis Process Intelligence Platform uses industry-leading process mining and AI technology and augments it with business context to give customers a living digital twin of their business operation. It’s system-agnostic and without bias, and provides everyone with a common language for understanding and improving businesses. Celonis enables its customers to continuously realize significant value across the top, bottom, and green line. Celonis is headquartered in Munich, Germany, and New York City, USA, with more than 20 offices worldwide.

Get familiar with the Celonis Process Intelligence Platform by watching this video.

Celonis Inclusion Statement:

At Celonis, we believe our people make us who we are and that “The Best Team Wins”. We know that the best teams are made up of people who bring different perspectives to the table. And when everyone feels included, able to speak up and knows their voice is heard - that's when creativity and innovation happen.

Your Privacy:

Any information you submit to Celonis as part of your application will be processed in accordance with Celonis’ Accessibility and Candidate Notices

By submitting this application, you confirm that you agree to the storing and processing of your personal data by Celonis as described in our Privacy Notice for the Application and Hiring Process.

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