Job Profile: Full-Stack Developer | Duties, Skills, Salary 2026

40-75K EUR

Annual gross salary

Bac+2 to Bac+5

Required training

Technology

Sector

Very high

Market demand

About the role

The full-stack developer is a versatile professional who masters both frontend (user interface) and backend (server, database, APIs) technologies. Capable of building complete web applications end-to-end, they're highly sought after, particularly in startups and SMEs where polyvalence is essential.

The full-stack developer works autonomously across the entire tech stack: frontend frameworks (React, Vue.js), backend platforms (Node.js, Python, Java), databases (SQL, NoSQL) and cloud deployment.

The role evolves with DevOps practices, microservices architecture, and containerisation. A skilled full-stack developer with cloud and infrastructure knowledge is particularly valued.

Main duties

Full-stack application development

Design and develop complete web applications from database to user interface. Implement the backend with chosen technology, develop frontend with modern frameworks, integrate databases.

API design and development

Design and implement REST or GraphQL APIs. Ensure API security (authentication, authorisation). Optimise API performance and scalability.

Database design and optimisation

Design database schemas (relational and NoSQL). Write and optimise SQL queries. Implement caching strategies. Manage database performance.

Testing and quality

Write unit, integration and end-to-end tests. Ensure code quality through reviews and linting. Practise Test-Driven Development where appropriate.

Deployment and DevOps

Containerise applications with Docker. Deploy to cloud platforms (AWS, Azure, GCP). Implement CI/CD pipelines. Monitor applications in production.

Continuous improvement

Optimise application performance. Identify and fix bugs in production. Contribute to architecture decisions. Stay current with technology trends.

Technical skills vs soft skills

Avantages

Mastery of one or more frontend frameworks (React, Vue.js, Angular)
Mastery of one or more backend languages (Node.js, Python, Java, PHP)
Strong SQL and NoSQL database knowledge
Understanding of web architecture and design patterns
API design and REST/GraphQL expertise
Version control (Git) and collaborative workflows
Basic DevOps and cloud deployment knowledge
Testing frameworks (Jest, PyTest, JUnit)

Inconvénients

Problem-solving and analytical thinking
Ability to learn new technologies quickly
Attention to detail and code quality
Communication and team collaboration
Self-management and independence
Passion for web development and continuous learning

Salary scale 2026

Full-stack developer salaries by experience (gross annual)

Experience	Startup/SME	Mid-size company	Large company	London/SE
Junior (0-2 years)	35-44K EUR	40-48K EUR	45-55K EUR	+15-20%
Experienced (2-5 years)	45-60K EUR	50-65K EUR	55-75K EUR	+15-20%
Senior (5-10 years)	60-75K EUR	65-85K EUR	75-100K EUR	+20-25%
Lead / Architect (10+ years)	75-100K EUR	85-120K EUR	100-150K EUR	+25-30%

Training and careers

Becoming a full-stack developer

Level	Qualification	Outcomes
Bac+2	BTEC Higher National Certificate, Coding bootcamp	Junior full-stack developer
Bac+3	Foundation Degree, Bachelor in Web Development	Full-stack developer
Bac+5	BSc Computing, Computer Science degree	Senior full-stack developer, Technical lead
Bootcamp	Le Wagon, Ironhack, Makers (3-6 months)	Career change to full-stack development

Career progression

0-2 years

Junior full-stack developer

Supervised development, learning

2-5 years

Full-stack developer

Independent features, code reviews

5-10 years

Senior full-stack developer

Architecture decisions, mentoring

10+ years

Tech lead / Head of Engineering

Team leadership, strategy

15+ years

CTO

Technical vision and direction

Frequently asked questions about full-stack development

Is a full-stack developer a generalist or specialist?

Full-stack developers are versatile generalists who can work across all layers of a web application. However, most develop deeper expertise in either frontend or backend over time. The most valued profiles combine breadth across the stack with depth in one specific area.

What technologies should a full-stack developer learn first?

Start with foundational web technologies: HTML, CSS, JavaScript. Then add a frontend framework (React is popular and learner-friendly), and a backend language (Node.js/JavaScript is natural progression). Learn a database (PostgreSQL or MongoDB). This JavaScript-everywhere approach is common for full-stack developers.

Is it possible to be equally skilled in frontend and backend?

Yes, but it's challenging. Most successful full-stack developers specialise in one area while maintaining competency in the other. It's better to be very strong in both rather than exceptionally strong in only one—balance matters more than expertise equality.

Can a full-stack developer manage infrastructure and DevOps?

Full-stack developers typically understand basic DevOps (Docker, CI/CD, cloud deployment). However, complex infrastructure management is usually handled by dedicated DevOps engineers. Full-stack developers with strong DevOps skills are particularly valued.

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