Senior Fullstack Developer (Next.js ,React & Python) - Barcelona

Thewhiteam; Barcelona; Hybrid; EUR 55,000 - 75,000; Full time

Benefits offered by this job

23 days of vacation per year

14 payments per year (June & December)

Flexible compensation options (childg

Job summary

THEWHITEAM Consulting offers an opportunity for a Senior Fullstack Developer to join a dynamic technology team in Barcelona. You will work across frontend and backend using Next.js, React, Tailwind CSS, Python, and FastAPI, with AWS cloud services in a Scrum environment.

The role emphasizes solving complex problems, mentoring junior developers, and collaborating with cross-disciplinary stakeholders to deliver robust, scalable applications.

Qualifications

• 4-5 years of fullstack development experience.
• Strong experience with Next.js and React.
• Experience with UI development using Storybook.
• Expertise in Tailwind CSS and responsive design.
• Backend experience with Python and FastAPI.
• Experience with automated testing using pytest.
• Knowledge of Gherkin, Cucumber and Playwright.
• Experience with AWS services (EC2, S3, Lambda, RDS).
• Experience with charting libraries (ECharts, Chart.js, Recharts).
• Proficient in Git and Scrum Agile environments.
• English C1 and Spanish professional working proficiency.
• Ability to mentor junior developers.

Responsibilities

• Develop and maintain web applications with Next.js and React.
• Build responsive UIs with Tailwind CSS.
• Develop backend components with Python and FastAPI.
• Integrate frontend and backend services for reliable apps.
• Implement automated tests with pytest, Playwright and friends.
• Work with data visualization libraries for charts.
• Deploy and manage apps on AWS (EC2, S3, Lambda, RDS).
• Ensure performance, scalability and security requirements.
• Troubleshoot, debug and optimize applications.
• Participate in Scrum ceremonies and planning sessions.
• Collaborate with designers, product and other developers.
• Contribute to coding standards and best practices.
• Mentor junior developers and share knowledge.

Skills

English (C1)

Spanish (Pro)

Communication

Teamwork

Mentoring

Problem solving

Analytical thinking

Tools

Next.js

React

Tailwind CSS

Python

FastAPI

AWS

Storybook

pytest

Gherkin

Cucumber

Playwright

Job description

At THEWHITEAM Consulting, we are looking for an experienced Senior Fullstack Developerto join a dynamic technology team.

You will work on the development of robust and scalable applications using Next.js, React and Tailwind CSS on the frontend, together with Python and FastAPIon the backend. You will also contribute to cloud-based solutions using AWS and work in a highly collaborative Scrum Agile environment.

The role is particularly suited to someone who enjoys solving complex technical problems, collaborating across disciplines and helping less experienced developers grow.

Responsibilities

• Develop and maintain web applications using Next.js and React .
• Build responsive and modern user interfaces using Tailwind CSS .
• Develop and maintain backend components using Python and FastAPI .
• Integrate frontend and backend services and ensure reliable application behaviour.
• Implement automated testing using pytest, Gherkin, Cucumber and Playwright .
• Work with data visualization and charting libraries such as ECharts, Chart.js or Recharts .
• Deploy and manage applications on AWS , including services such as EC2, S3, Lambda and RDS.
• Ensure applications meet performance, scalability and security requirements.
• Troubleshoot, debug and optimize applications.
• Participate in Scrum ceremonies , including daily stand-ups, sprint planning and retrospectives.
• Collaborate closely with developers, designers and product stakeholders.
• Contribute to technical decisions, coding standards and best practices.
• Mentor junior Fullstack Developers and provide guidance on technical challenges.

Requirements

• 4-5 years of experience in Fullstack development.
• Strong experience with Next.js and React .
• Experience with Storybook for UI component development.
• Strong knowledge of Tailwind CSS and responsive web development.
• Experience developing backend applications with Python and FastAPI .
• Experience with automated testing and pytest .
• Knowledge of Gherkin, Cucumber and Playwright .
• Experience with AWS , particularly EC2, S3, Lambda and RDS.
• Experience with charting libraries such as ECharts, Chart.js or Recharts .
• Good knowledge of Git .
• Experience working in Scrum Agile environments.
• Strong problem-solving and analytical skills.
• Excellent communication and teamwork skills.
• Ability to mentor junior developers.
• English: Advanced level (C1).
• Spanish: Professional working proficiency.

Nice to Have

• Experience with GitHub Actions and CI/CD pipelines.
• Knowledge of Docker and containerization.
• Experience with serverless architectures .
• Experience with SonarCloud or Snyk .
• Familiarity with TurboRepo and monorepo environments.
• Stronger experience with Storybook and component-driven development.

Technical Assessment

The recruitment process includes a technical pre-check to assess the candidate's technical experience and suitability for the role.

Conditions

• Location: Barcelona.
• Work model: Hybrid, with 2-3 days per week onsite.
• Working hours: 09:00 - 18:00.
• Estimated duration: 3 months.
• Experience: 4-5 years.
• Salary: According to experience.
• Candidates must have valid authorization to work in their country of residence before starting the engagement.

Company

Joining THEWHITEAM means becoming part of a company made up of professionals with extensive experience in technology consulting.

We firmly believe that companies and clients set the direction of the industry, but people are the ones who build it. We consider our people our greatest asset and a key part of the value we provide.

• Our collective agreement is the one applicable to consulting and market research companies.
• 23 days of vacation per year.
• 14 payments , including 12 monthly payments and two additional payments in June and December.
• Flexible compensation options including childcare vouchers and medical + dental insurance .