Intern Fullstack JavaScript Developer (Ad Tech)

About us
We are Bidmatic.io, an innovative AdTech company providing end-to-end solutions for demand management and mediation for publishers. We integrate display and video ad servers, header wrapper capabilities, and ad insertion features into a single stack — setting a new standard for ad inventory management for programmatic buyers

Our mission is to ensure publisher technology independence with a focus on control, transparency, and revenue growth. We believe in the power of technology to optimize advertising solutions and are committed to nurturing talent by providing opportunities to grow in a dynamic and supportive environment

About the role
This intensive 3-week internship is a unique opportunity to dive deep into the full product development cycle — from front-end to back-end — within the advertising technology industry

You will work on real-world projects, apply your knowledge of JavaScript, learn new frameworks, and make a tangible impact on our advertising solutions

Location: Remote Format: Internship (3 times per week, 3 hours per session)
Duration: 3 weeks (start September)
Compensation: Unpaid

What you’ll do

• Contribute to the development of web applications for advertising platforms, working on both front-end and back-end
• Write clean, efficient, and maintainable JavaScript code
• Help implement user interfaces using React, Angular, or Next.js
• Work with backend logic in Node.js using frameworks like Express, Nest.js, or Fastify.js
• Interact with databases such as MongoDB (NoSQL) and MySQL (SQL), and possibly use Redis for caching
• Participate in code reviews, giving and receiving constructive feedback
• Proactively explore and solve tech challenges specific to the AdTech domain

What we’re looking for

• Solid understanding of JavaScript, HTML, and CSS fundamentals
• Basic knowledge and/or hands-on experience with at least one framework: React, Angular, or Next.js
• Basic experience with Node.js and one of the following: Express, Nest.js, or Fastify.js.
• Understanding of working with both SQL and NoSQL databases — especially MongoDB and MySQL
• Familiarity with version control systems, particularly Git
• Understanding of RESTful API principles
• Strong analytical and problem-solving skills
• Good communication and teamwork abilities
• Eagerness to learn fast and adapt to new technologies
• Ability to work with documentation

Would be a plus:

• Familiarity with TypeScript
• Experience using Docker
• Experience with Redis
• English level B1+

What we offer

• Guaranteed job offer: Upon successful internship completion and strong performance, you'll receive an offer to join us as a Junior Fullstack Developer.
• Deep AdTech immersion: You’ll gain a unique understanding of how advertising technologies work by participating in real projects that impact monetization and demand management.
• Real-world experience: Apply your skills to solve relevant, industry-specific challenges.
• Structured mentorship: A dedicated mentor will guide you, provide regular feedback, and support your professional growth.

Selection process

• Application form submission https://forms.office.com/e/8VpbsqWwLj (Deadline: August 28, 2025). Applications without a completed form will not be considered.
• HR interview with video-recorded answers to a few technical questions.
• Technical form submission with questions from the course mentor.
• Invitation to the internship course.