Senior Frontend Fullstack Engineer

Were looking for an experienced Senior Frontend or Full-stack Engineer to join our product engineering team and help drive the evolution of our existing product suite built on modern React. 

Youll own features end to end from technical design through implementation testing and deployment and youll be a key voice in how our organization approaches frontend and UI engineering more broadly.

Youll regularly partner with engineers designers and product managers on other teams to align on shared patterns standards and tooling so the products we build feel consistent and our teams dont reinvent the wheel independently.

If you enjoy owning your work fully care about the craft of frontend engineering and want a seat at the table when cross-team technical decisions are made this role is built for you. Experience on the backend is a strong plus and opens the door to broader full-stack ownership within our team.

What Youll Do: Key Responsibilities

• Build and maintain product features using modern React (hooks component architecture state management) across our existing product line.
• Own the full development lifecycle for your work from technical design and implementation through automated testing (unit integration and end-to-end) to CI/CD deployment and post-release monitoring.
• Write clean maintainable well-tested code and hold that same bar in code reviews for your teammates.
• Collaborate with external/cross-functional teams other engineering squads design and product to define and evolve a common approach to frontend and UI development (shared component libraries design systems coding standards tooling and best practices).
• Debug and resolve production issues working with observability and monitoring tools to identify root causes and prevent recurrence.
• Participate in architectural decisions for the frontend including framework/library choices performance optimization accessibility and scalability of the UI layer.
• Contribute to sprint planning estimation and agile ceremonies helping the team plan and deliver predictably.
• Mentor and support other engineers sharing knowledge on frontend best practices and helping raise the overall engineering bar.
• (If applicable) Contribute to backend development particularly -based services APIs and integrations that power the products you work on.
• Stay current with the evolving frontend ecosystem and bring relevant new tools patterns and practices back to the team.

Qualifications :

What We Are Looking For: Required Qualifications
Core experience:

• 4 years of professional experience in frontend or full-stack development.
• Strong hands-on expertise with modern React (hooks functional components context/state management performance optimization).
• Solid command of JavaScript/TypeScript HTML5 and CSS3 (TypeScript is our standard and experience with it is expected).
• Proven experience owning the entire development cycle: design coding testing code review deployment and monitoring not just writing features and handing them off.
• Familiarity with common design tools such as Figma and Storybook

Testing & delivery

• Practical experience with frontend testing methodologies and tools (e.g. Jest React Testing Library Playwright Cypress or equivalent) covering unit integration and end-to-end testing.
• Experience working with CI/CD pipelines and deployment workflows and a good understanding of what production-ready means.
• Comfort with debugging and troubleshooting issues across the stack including in production environments.

Collaboration & communication

• Demonstrated ability to communicate and align with external/other engineering teams someone who can drive consensus on shared frontend standards not just implement their own.
• Strong written and verbal communication skills; comfortable presenting technical trade-offs to both engineers and non-technical stakeholders.
• Experience working in agile/scrum environments (sprint planning stand-ups retrospectives).

Engineering practices

• Familiarity with modern frontend architecture concepts: component-driven design design systems state management patterns accessibility (a11y) and performance/optimization techniques.
• Understanding of responsive design cross-browser compatibility and web fundamentals (DOM network behavior rendering).
• A pragmatic approach to using AI-assisted development tools someone who can direct and verify AI-generated code not just accept it.

Nice to have

• Backend development experience ideally on / C# platform (building or consuming REST APIs working with a relational database understanding of service-oriented or microservice architectures).
• Experience with monorepos micro-frontend architectures or contributing to internal component/design-system libraries.
• Prior experience in a role that spanned multiple teams or products requiring you to negotiate technical standards across organizational boundaries.

Education

• Bachelors degree in Computer Science Engineering or a related field or equivalent practical experience.

Additional Information :

Our Values

Collaboration is our superpower

• We uncover rich perspectives across the world
• Success happens together
• We deliver across borders.

Innovation is in our blood

• Were pioneers in our industry
• Our curiosity is insatiable
• We bring the best ideas to life.

We do what we say

• Were accountable for our work and actions
• Excellence comes as standard
• Were open honest and kind always.

We are caring

• We learn from each others experiences
• Stop and listen; every opinion matters
• We embrace diversity equity and inclusion.

More About Cint

Were proud to be recognised in Newsweeks 2025 Global Top 100 Most Loved Workplaces reflecting our commitment to a culture of trust respect and employee growth.

In June 2021 Cint acquired Berlin-based GapFish the worlds largest ISO certified online panel community in the DACH region and in January 2022 completed the acquisition of US-based Lucid a programmatic research technology platform that provides access to first-party survey data in over 110 countries.

Cint Group AB (publ) listed on Nasdaq Stockholm this growth has made Cint a strong global platform with teams across its many global offices including Stockholm London New York New Orleans Singapore Tokyo and Sydney. ()

Additionally in a world of AI we want our candidates to understand our approach to the use of AI during the interview and hiring process so wed appreciate you reading our AI usage guide.

Remote Work :

No

Employment Type :

Full-time