Sr. Frontend Software Engineer - Orchestration and Automation

Celonis; Madrid; On-site; EUR 60,000 - 90,000; Full time

Benefits offered by this job

RSUs

Hybrid work model

Learning & mentorship

Job summary

Celonis is a global leader in Process Intelligence, delivering technologies that turn data insights into actions. As a Senior Frontend Software Engineer, you will own client-side architecture, build scalable UI libraries, and ensure top-tier performance in Angular-based web apps.

You will mentor junior engineers, collaborate with product, UX, and backend teams, and push modern UI standards across our frontend stack. This hybrid role emphasizes both hands-on coding and architectural leadership.

Qualifications

• 5+ years of professional frontend web development experience.
• Deep proficiency in Angular (recent versions) and TypeScript.
• Expert-level HTML5, CSS3/SCSS, and responsive design skills.
• Extensive experience consuming and integrating RESTful APIs and handling async data.
• Strong familiarity with frontend testing frameworks (Jest, NestJS, Playwright, Cypress).
• Solid understanding of web performance optimization, caching, and browser lifecycles.
• Experience with frontend build pipelines, tooling, and Git/CI/CD.
• Strong UI/UX eye and collaboration across teams.

Responsibilities

• Design, develop, and maintain scalable web applications with Angular and TypeScript.
• Architect reusable UI components and scalable state management.
• Collaborate with UI/UX to translate designs into pixel-perfect interfaces.
• Integrate RESTful APIs and real-time data into the UI.
• Optimize performance, bundle sizes, rendering speeds, and cross-browser compatibility.
• Write clean, tested frontend code with unit and end-to-end tests.
• Participate in code reviews ensuring accessibility and frontend best practices.
• Mentor junior frontend developers and promote UI craftsmanship.
• Troubleshoot and optimize existing UI components for better user satisfaction.

Skills

Frontend development

Angular

TypeScript

RxJS

UI/UX collaboration

Web performance

REST APIs

Testing frameworks

Git & CI/CD

Tools

Angular CLI

Playwright

NestJS

Jest

Cypress

Git

Job description

Celonis is the global leader in Process Intelligence and the pioneer of Process Mining technology. As one of the world’s fastest-growing enterprise SaaS companies, we are changemakers pushing the boundaries of what’s possible. We invest heavily in advanced AI capabilities—specifically our Process Intelligence Graph to turn data insights into immediate business action. We believe there is a massive opportunity to unlock global productivity and sustainability by placing intelligence at the core of every business process. Join our mission to make processes work for people, companies, and the planet.

The Team

The Team is part of the Orchestration Engine & Actions organization mainly focused on user-facing operational interfaces, data visualization, and interactive action triggers. The Orchestration Engine & Actions organization is dedicated to building intuitive, reliable, and high-performance user interfaces that allow customers to manage complex, critical operational workflows. Our team focuses on developing rich web applications that enable seamless execution and monitoring of operational use cases, ensuring clarity, automation, and flexibility for our users. We work closely with product managers, UX/UI designers, and backend engineers to deliver impactful frontend solutions.

The Role

As a Senior Frontend Software Engineer, you will play a key role in designing, building, and maintaining sophisticated, intuitive user interfaces using modern Angular. You will take ownership of client-side architecture, component libraries, and frontend performance to ensure exceptional user experiences. You will collaborate closely with product managers, UX/UI designers, and backend engineers to turn complex workflow requirements into responsive, interactive web applications.

Your experience in modern web development, state management, component architecture, and frontend design patterns will help drive technical excellence within the team. You’ll also mentor junior engineers, champion modern UI standards, and elevate frontend engineering practices.

Key Responsibilities

• Design, develop, and maintain clean, scalable, and responsive web applications using Angular and TypeScript.
• Architect reusable UI component libraries, scalable state management, and efficient client-side data flows.
• Partner with UI/UX designers to translate wireframes and design systems into pixel-perfect, accessible user interfaces.
• Collaborate with backend engineers to integrate RESTful APIs and real-time data feeds into the UI seamlessly.
• Optimize web application performance, bundle sizes, rendering speeds, and cross-browser compatibility.
• Write clean, maintainable, and well-tested frontend code utilizing modern unit testing and e2e frameworks.
• Participate in code reviews, ensuring visual standards, accessibility guidelines (WCAG), and frontend best practices are met.
• Mentor and support junior frontend developers, fostering a culture of technical growth and UI craftsmanship.
• Troubleshoot, debug, and optimize existing UI components to elevate user satisfaction and workflow efficiency.

Qualifications

• 5+ years of professional experience in frontend web development building complex web applications.
• Deep proficiency in Angular (recent versions), TypeScript, RxJS, and modern state management patterns.
• Expert-level skills in modern HTML5, CSS3/SCSS and responsive design
• Extensive experience consuming and integrating RESTful APIs and handling asynchronous data streams.
• Strong familiarity with frontend testing frameworks (e.g., Jest, NestJS, Playwright, Cypress).
• Solid understanding of web performance optimization techniques, client-side caching, and browser execution lifecycle.
• Familiarity with modern frontend build pipelines, tooling, and version control (Git, Angular CLI, CI/CD).
• Strong eye for UI/UX detail, passion for user-centered design, and excellent cross-functional collaboration skills.

What Celonis can offer you:

• Pioneer Innovation: Work with the global leader in Process Mining and the Process Intelligence Graph to shape the future of AI-driven business operations.
• Ownership from Day 1: Every full-time "Celonaut" is an owner, receiving Restricted Stock Units (RSUs) and merit-based refresh grants.
• Unrivaled Family Support: Benefit from our inclusive parental leave policy—24 weeks of fully paid leave for primary carers and 12 weeks for supporting carers, available from your first day of employment.
• Work-Life Integration: Enjoy Unlimited PTO (in applicable regions) and generous PTO globally, as well as a flexible hybrid work model that balances remote focus with vibrant office collaboration.
• Continuous Growth: Elevate your skills through our 70-20-10 learning framework, mentorship programs, and access to a dedicated learning platform.
• Holistic Well-being: Prioritize your health with subsidized Wellhub memberships, mental health counseling, and dedicated "Wellness Weeks" that prioritize work/life balance.
• Drive Sustainability: Participate in annual Impact Days, where you receive paid time off to volunteer for community and environmental causes with your local office, or virtually.
• Global Inclusion & Belonging: Find community through our Inclusion Think Tank and participate in our annual Inclusion Days, ensuring every voice is heard and valued.
• Value-Driven Impact: Join a mission-led organization where our core values—Live for Customer Value, The Best Team Wins, We Own It, and Earth Is Our Future—drive every decision.

About Us:

Celonis makes processes work — for people, companies, and the planet. Powered by process mining and AI, the Celonis Process Intelligence Platform integrates process data and business context to create a living digital twin of business operations. We enable thousands of companies worldwide to understand how their business actually runs and, together with their partners, build intelligent solutions that transform and continuously improve the way they operate — unlocking billions in value. 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.

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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.