JavaScript Trainee

Andersen is an international IT company and one of the leaders in software outsourcing. Around 90% of our projects are in banking and fintech for clients worldwide. We build world-class products and an environment where ambition turns into professional growth.

A traineeship is more than just learning. It’s the shortest path into the industry for those who don’t yet have commercial experience.

The JavaScript Traineeship at Andersen is your gateway to real-world development with the prospect of employment. You’ll strengthen your practical skills and launch your career alongside experienced professionals.

Applications are open in Poland: candidates from Warsaw and Kraków attend the program in-office, while participants from other cities across Poland can join online.

What we offer:

• 5 months: from your first day in the Lab to your first day on a commercial project.
• Full-time commitment: 5 days a week, 8 hours a day — an intensive format that truly accelerates growth.
• Bring your own laptop. Your laptop + our training = a Junior ready for real-world tasks.
• Focused on learning. This traineeship is all about education. A Junior 1 offer after the program is a strong motivation to stay the course.
• Your stack, your growth path. Start with Angular, React, or Node.js and build expertise in the direction that fits you best.
• Employment upon successful completion of the program.

Who we’re looking for

Someone who understands the value of product quality and is eager to build expertise in JavaScript.

Required:

• Intermediate English or higher.
• Strong theoretical knowledge of JavaScript fundamentals, HTML/CSS, and experience working with development environments.
• Understanding of data types; ability to work with arrays and objects; knowledge of prototypes and how they work; understanding of AJAX.
• Educational, personal, or test projects in your portfolio.

Nice to have:

• Technical background.
• Any programming experience.
• Completed courses related to software development.
• Intermediate German or higher.

What makes our program stand out:

• Experienced mentors and weekly technical assessments. You’ll always know where you stand and what to focus on next.
• A dedicated coordinator. Someone who will be there throughout your journey to guide, support, and help you stay on track.
• A second technology is included by default. You’ll enter commercial projects with a broader tech stack and the opportunity to work on enterprise-level solutions — 90% of our projects are in world-class banking and fintech.
• Transparent grades and fast growth. You’ll always know what it takes to move forward in your career.
• Continuous learning culture. We have our own educational platform with courses, materials, and resources all in one place.
• A strong engineering community. Collaborate with experienced developers, share knowledge, participate in internal meetups, and receive support from colleagues at every stage of your professional growth.

Apply now — every application will be reviewed. Your JavaScript journey can start today.