Senior Fullstack Engineer
Contentsquare
Software Engineering
Barcelona, Spain
Posted on Jan 29, 2026
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 are looking for a Senior Fullstack Software Engineer. This position could be with an office based in Barcelona or Cairo, or remotely in Spain, Italy, and Portugal
You will be part of the Growth line. The mission of this line is to ensure a comprehensive and sustainable approach to business expansion by optimizing user conversions, elevating customer retention strategies, and maximizing our monetization efforts by catering to our users' needs effectively.
What we’re looking for
- Strong full-stack foundations, with proven experience building user-facing products end-to-end: from modern frontend development (ideally with React or a similar component-based framework) to backend logic, API design, and external system integrations, ideally using TypeScript and Node.js.
- Drive engineering velocity by effectively utilizing AI coding assistants in daily workflows and promoting a culture of AI adoption to streamline repetitive tasks and improve team-wide developer productivity
- Skilled at using data, funnels, analytics, and A/B testing to figure out what to build next and make continuous improvements
- A pragmatic approach to engineering, with a focus on avoiding over-engineered solutions and an understanding of how to maintain high-quality code in a delivery-focused environment
- Desire to work in a respectful, transparent, and collaborative environment that values feedback
- Ability to work with predominantly remote colleagues distributed across EMEA
- English fluency, both written and spoken
What you’ll do
- Work in an agile cross-functional team with other engineers, product managers, and product designers to launch new products, features and experiments
- Ship and iterate onboarding, activation, adoption and monetization experiences that create fast, repeatable value and turn first-time users into long-term fans
- Engage in product discovery, participate in code reviews, and provide ad-hoc assistance to team members
- Collaborate with engineers across the department to identify and implement improvements to our processes and systems
- Share your knowledge and insights across the organization through tech talks and internal/external posts
Our Stack / Tools:
- Frontend: Typescript, React, xState, Storybook (Vue is welcome if you are open to transitioning to React)
- Backend: NodeJS, Python, Flask/FastAPI
- DevOps & Tooling: Kubernetes, Kafka, AWS, Terraform, Datadog, Redis, Linux, Nginx, Zuora, PostgreSQL, Figma, Github Copilot, Cursor