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42Crunch is revolutionizing the App Sec market by bridging the gap between development and security. Our team of security-as-code experts contribute to the development of an API threat protection platform that positions us as a leader in API security. Our clients include the big names in the Fortune 500 in a wide range of industries.
As a Senior Front-End Developer, providing services through a B2B contract, you will be part of the Engineering Team and will play a key role in the development of the product. You will contribute to its strategy as part of a multidisciplinary team. You will be required to travel from time to time for company events.
About the role As a key member of the 42Crunch SaaS UI team, the Senior Front-End Developer (reporting to the Head of UI) will primarily be responsible for:
Developing new features for Angular-based SPAs and maintaining a monorepository codebase with shared component library and utilities
Leading cross-functional squad efforts to deliver specific platform functionality
Collaborating closely with ecosystem UI, back-end, QA, design, and documentation teams to supplement front-end development
Actively participating in regular team meetings and initiating discussions on complex architectural topics
Contributing to release delivery processes following team procedures
Championing best practices for writing maintainable, testable, secure, and performant front-end code
About you We strongly expect :
Motivation and expertise in modern Angular and TypeScript SPA development
Multi-year experience with Angular, RxJS, NgRx, and Bootstrap
Proficiency in Nx tools for monorepositories (including the broader ecosystem)
Experience building and maintaining custom UI component libraries and adapting third-party libraries (e.g., using Storybook )
Ability to interpret Figma mockups and prototypes, extract developer specs, and collaborate with UI/UX designers
Knowledge of web accessibility principles and tools, including screen readers
Strong debugging skills (and detective-level curiosity), professional use of IDEs and terminal emulators (of your preference)
Familiarity with development operations : task estimation, Git workflows, CI/CD, code reviews, and technical documentation
Experience in small teams (5-20 people) with high autonomy and responsibility
Comfort with ambiguity — making complex technical/design decisions while preserving project integrity
Fluent professional English (spoken and written)
Strong interpersonal skills, accountability, and remote-work experience (EMEA time zones)
Proficiency with asynchronous communication tools : Slack, Google Meet, Zoom, etc
We’d be happy to see : Understanding of the testing pyramid and experience writing tests in collaboration with QA
Platform engineering experience (internal tools, "code plumbing")
Familiarity with( application analytics/monitoring )
Experience with canvas-based charting libraries (e.g., Chart.js)
Willingness to mentor peers and share expertise
A pragmatic approach to AI tools
We’d be pleasantly surprised by: Background in security tools/products
Relevant open-source contributions
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What we offer: Competitive salary + stock options, with annual compensation reviews
Remote-first culture with versátil hours and bi-annual in-person team gatherings
PTO/leave, pension schemes, and health insurance (location-dependent)
Hardware/software, training, and development support
Low-bureaucracy environment with a flat organizational structure
The recruitment process will include a take-home practical test task assignment (with an example of our typical working routine for 4-6 hours of work) to return in one week during the technical interview, for assessment of matching the job requirements.
Seniority level Mid-Senior level
Employment type Contract
Job function Industries
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📌 Senior Front-End Developer
🏢 42Crunch
📍 Madrid