Intern Java Backend Developer Job at Circle K (Warsaw)

Senior Lead Backend Java Developer

The Applications Development Manager is a senior level position responsible for ...

Location

Canada , Mississauga

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

10+ years of relevant experience
Hands-on development experience required
Must have hands-on backend Java development experience
Experience in applications development
Experience in management
Experience managing global technology teams
Working knowledge of industry practices and standards
Consistently demonstrates clear and concise written and verbal communication
Bachelor’s degree/University degree or equivalent experience
Master’s degree preferred

Job Responsibility

Manage multiple teams of professionals to accomplish established goals and conduct personnel duties for team
Provide strategic influence and exercise control over resources, budget management and planning while monitoring end results
Utilize in-depth knowledge of concepts and procedures within own area and basic knowledge of other areas to resolve issues
Ensure essential procedures are followed and contribute to defining standards
Integrate in-depth knowledge of applications development with overall technology function to achieve established goals
Provide evaluative judgement based on analysis of facts in complicated, unique, and dynamic situations including drawing from internal and external sources
Influence and negotiate with senior leaders across functions, as well as communicate with external parties as necessary
Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency, as well as effectively supervise the activity of others and create accountability with those who fail to maintain these standards

Fulltime

Intern Java Backend Developer

Are you passionate about backend development and eager to gain hands-on experien...

Location

Poland , Warszawa

Salary:

Not provided

Circle K

Expiration Date

Until further notice

Requirements

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)
Willingness to learn with open mindset
Good communication skills and open for other people

Job Responsibility

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

What we offer

Hands-on experience with modern backend technologies in the eMobility market
Hands-on experience with SCRUM and SAFe
Exposure to industry-leading EV charging and smart mobility projects
Mentorship from experienced developers and domain experts
Potential for a full-time offer upon completion of the internship

Fulltime

Backend Java Developer

Location

India , Delhi; Noida

Salary:

Not provided

Thirdeye Data

Expiration Date

Until further notice

Requirements

Java 8/9
Core Java
Design Patterns (beyond Singleton/Factory)
Web Services Development (REST & SOAP)
XML & JSON processing
CI/CD pipelines
Strong experience in integration component development using Java 8/9 & SOA
Deep knowledge of integration architecture and design patterns
Hands-on experience with tools such as Eclipse, NetBeans, JIRA, Confluence, Bitbucket, SVN
Exposure to modern IT trends: Cloud Platforms, DevOps, Low-Code, Intelligent Automation

Job Responsibility

Write design specifications and user stories for assigned modules
Develop backend components/classes and support QA teams with test cases
Maintain coding best practices and conduct peer code reviews
Participate in Scrum ceremonies (Daily Standup, Planning, Retro, Demos)
Identify technical/design/architecture risks and create mitigation plans
Adhere to prescribed development processes and documentation standards
Collaborate with Architects and cross-functional teams on technical issues, demos, POCs, and proposals
Contribute to internal knowledge repositories, reusable accelerators, and IP creation
Mentor junior developers and provide constructive feedback
Deliver internal training on new technologies

Fulltime

Backend Java Developer

Location

United States , Princeton

Salary:

Not provided

Best High Technologies

Expiration Date

Until further notice

Requirements

Bachelor of Science degree in Electrical Engineering
3 months experience

Job Responsibility

Develop, test, manage and support CL3n, RAROC and CHET Application
remediate application security vulnerabilities and upgrade application to a higher and newer version
Debug and test codes using Postman for RESTful methods
Use JBoss-eap-6.4 and 7.1 as deployment server, Jenkins for continuous integration and delivery
Use Git, BitBucket and Nexus Repository for version control
Remediate library security vulnerabilities for several Commercial Lending CL3n APIs
Use Sonatype and Veracode for detecting and testing vulnerabilities during building and compiling period
Disable HTTPs transaction protocol using TLS1 and SSL
Make sure the Transport Layer Security version is 1.2 so that the CL3n APIs can work perfectly and safely with Salesforce developing platform
Support AMCB Maestro Release Team, Salesforce nCino developing team for application technique problems related to CL3n APIs side

Senior Backend Developer

Senior Backend Developer – Up to £700pd Inside IR35 – Full Remote. One of the mo...

Location

United Kingdom

Salary:

Not provided

Orbis Consultants

Expiration Date

Until further notice

Requirements

Strong experience in Java/Python/Golang programming
Experience with AWS or other cloud platforms
Strong test driven development
Strong scalability and performance mindset

Job Responsibility

Design, develop and deploy scalable, high-performance Back End systems using Java/Python/Golang
Collaborate with the engineering team to define and implement new features and services
Roll features out to over 10,000,000 users and also close to 5,000 internal staff

Backend Intern

Student internship program for approx. 18 months. Opportunity to gain real hands...

Location

Israel , Herzliya

Salary:

Not provided

Hewlett Packard Enterprise

Expiration Date

Until further notice

Requirements

Top Computer Sciences/ Software Engineering/ Computer Engineering undergraduate student
GPA of 85 or higher
At least two years of studies remaining
Availability to work ~3 days a week (~60%)
Good understanding of OOP through C#, C++, or Java
Self-learner
Excellent English - written and verbal
Team player with ability to work independently

Job Responsibility

Develop new features
Solve bugs
Work with technology stack (Kubernetes, .NET Core, Virtualization APIs)
Join Zerto development team working in Agile/Scrum

What we offer

Health & Wellbeing benefits
Personal & Professional Development programs
Unconditional Inclusion environment
Flexible hybrid work environment
Growth and development opportunities
Learn from leading developers in the industry

Parttime

Backend Developer

Propel your career surrounded by a diverse team of innovative, goal-oriented ind...

Location

Germany , Berlin

Salary:

Not provided

Belden, Inc

Expiration Date

Until further notice

Requirements

Degree in computer science or comparable professional training
2+ years of experience in application software development
Excellent knowledge of Java programming (Java 8+)
Practical experience with multithreading, Spring, Hibernate, Maven, JUnit, REST architecture and API communication
Proficient use of Eclipse or IntelliJ and Git
Solid knowledge of MySQL
Proficient use of the Linux command line
Fluency in English and German (at least C1)

Job Responsibility

Further development and maintenance of our network security solution macmon NAC, continuously enhancing, troubleshooting, and optimizing the platform to ensure robust security, high availability, and seamless integration with existing IT infrastructure
Independently implement customer-specific developments by translating client requirements into tailored software solutions
Take ownership of software projects from concept through deployment, ensure clear and comprehensive documentation for both internal teams and clients, and implement systematic testing and validation processes to guarantee quality and reliability
Conduct code reviews to ensure adherence to coding standards, architectural guidelines, and security best practices, providing constructive feedback to team members to improve code quality, maintainability, and performance

What we offer

Hybrid and remote work practices where feasible
Flexible working hours
Employee stock purchase plan
Parental leave benefits
Paid leave for volunteer work in your community
Multiple and frequent training opportunities
Professional talent management and succession planning
Corporate health and well-being initiatives
Work culture which includes commitment to diversity, equity, inclusion and sustainability

Fulltime

Senior Backend Developer

Senior Backend Developer – Up to £700pd Inside IR35 – Full Remote. One of the mo...

Location

United Kingdom

Salary:

Not provided

Orbis Consultants

Expiration Date

Until further notice

Requirements

Strong experience in Java/Python/Golang programming
Experienced with K8s/Docker
Experience with AWS or other cloud platforms
Strong test driven development
Strong scalability and performance mindset

Job Responsibility

Design, develop and deploy scalable, high-performance Back End systems using Java/Python/Golang
Collaborate with the engineering team to define and implement new features and services
Roll features out to over 10,000,000 users and also close to 5,000 internal staff

Fulltime

Intern Java Backend Developer

Circle K

Location:
Poland , Warsaw

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
March 20, 2026

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Job Posted:March 20, 2026

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Location:
Poland , Warsaw

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Contract Type:
Not provided

Job Posted:
March 20, 2026