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Senior Frontend Engineer

Contentsquare
Spain
Posted March 19, 2026
Full-time

Job Overview

Contentsquare is a global digital experience analytics company empowering the brands you interact with every day to build better online experiences for all. Since our founding in France in 2012, we have grown to be a truly global and distributed team - known as the CSquad - representing more than 72 nationalities across the world.
In 2022, we raised $600M in Series F funding, and we were also recognized as a certified Great Place to Work in France, Germany, Israel, US and UK. In November 2023, we acquired Heap, our largest acquisition to date, strengthening our analytics platform to provide a 360 view of users' digital experience.
Please note: Scammers are posing as Contentsquare and Contentsquare team members. We’ll never initially contact you via text or GChat, and never solicit money from you. Please visit our careers blog for more information.

We’re looking for a Senior Software Engineer who combines strong technical expertise with a leadership mindset. You’ll join a frontend-focused team building products used by some of the world’s largest digital organizations, with a real seat at the table when it comes to shaping how we build.

This isn’t a role where you’re handed specs and asked to execute. You’ll play a key role in defining technical direction, driving architectural decisions, and raising the bar for quality across the team.

If you take pride in the code you ship and want your work to have a meaningful, visible impact, this role is for you.

Contentsquare is a global digital experience analytics company empowering the brands you interact with every day to build better online experiences for all. Since our founding in France in 2012, we have grown to be a truly global and distributed team - known as the CSquad - representing more than 72 nationalities across the world.
In 2022, we raised $600M in Series F funding, and we were also recognized as a certified Great Place to Work in France, Germany, Israel, US and UK. In November 2023, we acquired Heap, our largest acquisition to date, strengthening our analytics platform to provide a 360 view of users' digital experience.
Please note: Scammers are posing as Contentsquare and Contentsquare team members. We’ll never initially contact you via text or GChat, and never solicit money from you. Please visit our careers blog for more information.

We’re looking for a Senior Software Engineer who combines strong technical expertise with a leadership mindset. You’ll join a frontend-focused team building products used by some of the world’s largest digital organizations, with a real seat at the table when it comes to shaping how we build.

This isn’t a role where you’re handed specs and asked to execute. You’ll play a key role in defining technical direction, driving architectural decisions, and raising the bar for quality across the team.

If you take pride in the code you ship and want your work to have a meaningful, visible impact, this role is for you.

What we’re looking for

    • 5+ years of professional software engineering experience

    • Proven track record of leading large, complex technical projects, taking ownership end-to-end

    • Strong command of modern web technologies, with hands-on experience across the stack (React, Vue, Angular, Node.js, AWS, PostgreSQL)

    • Ability to reason about full-stack systems, understanding how frontend decisions impact backend systems and vice versa

    • Strong communication skills, with the ability to write clear design docs, provide constructive code reviews, and discuss technical trade-offs thoughtfully

      • Preferred

      • Experience with AI-assisted development tools (e.g. Cursor, Copilot, Claude) and curiosity to explore their potential

      • Familiarity with Product Analytics, Digital Experience Analytics, or related domains

      • Experience working in distributed, international teams across multiple time zones

What you’ll do

  • Design and build high-quality, scalable web applications using a modern frontend stack (React, Vue, Node.js, TypeScript)

  • Take technical ownership of complex, cross-functional projects, from initial design through to production

  • Write and review technical designs, RFCs, and architectural proposals that set clear direction for the team

  • Collaborate closely with Product and Design to shape features that are both technically sound and user-centric

  • Champion engineering best practices, including code quality, testability, observability, and maintainability

  • Mentor and support other engineers through code reviews, pairing, and technical discussions

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