We build impactful software products with 💙

At AB4 Systems, we help big organizations and funded startups to develop meaningful software products for their audiences.

We work with new technologies and build products at scale. Our products are used by millions of users all around the world. We delivered 50+ software products to 20+ clients from 4 continents.

Mobile Intern Engineer
Paid internship at AB4 Systems · Starts after academic term
  • – Mobile
  • – Software technologies in Automatic Control, Industrial And Systems Engineering
  • room București

We're looking for an Amazing Mobile Intern Engineer to join our company. Technologies used: hybrid technologies: React Native/Flutter, native technologies for iOS/Android.

As a team, we are passionate about technology and product development and we build impactful software products with 🧡. At AB4 Systems we help big organizations (UNICEF, World Bank, EY, Carrefour) and funded startups (Medicai, Neobility) to develop meaningful software products for their audiences.

Catalin, Mobile Engineer - "I worked close to passionate people, willing to constantly help me so I can improve both my hard and soft skills as a Software Engineer!"


💰 Paid Internship with a possibility to transition to a permanent job position (part time or full time);

  • ⛺️ Flexible Work Schedule;
  • 🌆 Great Location - 5 minutes away from Universitatii Square;
  • 🖥 Performant Hardware & Ergonomic Workspaces;
  • ☕️ Coffee, Protein Shakes, Healthy Snacks and Barista Talented Colleagues;
  • 📚Free books: you name it, we order it. We also have a ton of highly appreciated books in our library;
  • 🍿Fun Quizzes & Board Games nights.


  • are passionate for software development;
  • are a student at Politehnica University / University Bucharest - Computer Science or any related fields;
  • have solid knowledge of OOP; a good understanding of its concept and applicability;
  • have good knowledge of Javascript (preferably ES6+), Swift(iOS) or Kotlin/Java(Android);
  • consider yourself analytical and good at problem solving;
  • oriented on getting things done;
  • able to ask questions to clarify the requirements;
  • love to be part of a rockstar team with smart people and different hobbies ( kitesurfing, skiing, music ).


  • you will learn to write efficient and reusable code;
  • you will work together with our Engineers & Designers to build world class mobile apps :);
  • You will take part in product meetings where you will see how product decisions are made and you will be able to add your input to make our users life as easy as possible;

WHAT’S NEXT? • Apply! • Pass CV Selection (make your CV stand out, write about the projects you were involved in, including the ones at university) • We send you a technical problem🕵🏽 to solve at home. • We invite you for an interview 👀 at our Bucharest Office. About the interview: we look for technical skills (algorithms, data structures, OOP, problem solving skills), communication skills and alignment with our company culture. • We make you an offer you can't refuse!• You accept our offer 📜(hopefully 😎). • 🙋🏻‍♂️🙋🏽‍♀️ Welcome to the team!