Posted:
3/8/2026, 7:23:15 PM
Location(s):
Masovian Voivodeship, Poland ⋅ British Columbia, Canada ⋅ Warsaw, Masovian Voivodeship, Poland
Experience Level(s):
Internship
Field(s):
Software Engineering
Job Description
We are looking for a Java Back-End Developer Intern to join our dynamic engineering team. As an intern, you will contribute to the development and enhancement of our EV and Fuel platforms, working on microservices architecture, cloud integration, and API development. You will gain hands-on experience in enterprise-level application development while collaborating with senior developers, architects, product managers and other roles involved in SDLC.
Assist in developing and maintaining RESTful APIs using Java and Spring Boot for eMobility services.
Work with databases (PostgreSQL, MySQL) to store and process EV charging and mobility data
Write clean code and follow best practices and participate in code reviews.
Collaborate with senior developers to debug, optimize, and enhance backend services
Participate in Agile development processes, including daily stand-ups and code reviews
Understanding of Java programming fundamentals
Understanding of basic OOP principles
Basic understanding of algorithms and data structures
Basic understanding of SQL and database management
Basic understanding of RESTful APIs
Familiarity with Git
Exposure to testing frameworks
Exposure to frameworks like Spring or Hibernate (optional)
Interest in emerging technologies, especially in AI tolls supporting SDLC.
Willingness to learn
Good communication
Team collaboration
Basic problem-solving
English level B2+ (written and spoken) + IT terminology.
Hands-on experience with modern backend technologies in the Retail, EV and Fuel market in Global scale.
Hands-on experience with SCRUM and SAFe
Exposure to industry-leading smart EV and Fuel projects
Mentorship from experienced developers and domain experts
Potential for a full-time offer upon completion of the internship
Check who we are here: https://youtu.be/td-QGnNnvW0
Want to know even more about us? Take a look at our career page: https://workwithus.circlek.com/global/en/businesscentrewarsaw
Interested?
We encourage you to apply.
We know great companies are built from within, by great people like you. Come grow with us!
We´re looking forward to your application
We hereby inform that in the company Circle K Business Centre Poland sp. z o.o. with registered office in Warsaw an Internal Notification and Follow-up Actions Procedures applies.
The document describes rules for reporting violations of law by whistleblowers. Full content of the above-mentioned Procedure is available here: https://www.circlek.pl/o-nas/procedury-zgloszen
Website: https://www.circlek.com/
Headquarter Location: Tempe, Arizona, United States
Employee Count: 10001+
Year Founded: 1951
IPO Status: Private
Industries: Consumer Goods ⋅ Retail ⋅ Sales ⋅ Wholesale