WORKING STUDENT, JUNIOR PRODUCT OWNER (M/F/D)

Greenstone Energy GmbH is a fast-growing company in the field of sustainable energy solutions. Since 2015, we have been committed to providing climate- and environmentally-friendly energy supplies using 100 percent renewable energy. Our best-known brands are VeganStrom and New Energy Cloud. This makes us not only pioneers in the field of animal-friendly green electricity offers, but also technologically innovative.

We are looking for a Working Student to support our Product Management team in translating business requirements into high-quality software.

Level: Junior                Location: Berlin

Your role

You support our Product Management team in translating business requirements into high-quality software. Working closely with experienced Product Owners, developers, and business stakeholders, you will gain hands-on experience across the entire software development lifecycle—from requirements engineering and backlog management to testing and release validation. This role offers an excellent opportunity to learn modern product management while contributing to real customer-facing software.

Grow with us: We are looking for someone who can contribute during their studies and potentially grow into a full-time role after graduation. This is a great opportunity to build deep business knowledge, take ownership early, and become part of the team long term.

Key responsibilities

Requirements Engineering

·      Support the analysis and documentation of business requirements

·      Write user stories and acceptance criteria together with Product Management

·      Document business processes and workflows

·      Help prepare backlog refinement sessions

·      Ensure documentation is complete and up to date

Backlog Management

·      Maintain and organize the product backlog in Jira

·      Track user stories throughout the development process

·      Support sprint planning and backlog refinement

·      Help maintain visibility on priorities and delivery status

Testing & Quality Assurance

·      Create test scenarios and acceptance criteria

·      Execute functional testing and User Acceptance Testing (UAT)

·      Validate delivered functionality against requirements

·      Document and track defects

·      Support release validation

Collaboration

·      Work closely with Product Owners, developers, and business stakeholders

·      Support continuous improvement of documentation and development processes

·      Learn Agile product development in a highly collaborative environment

What you bring:

Experience & Skills

·      Currently pursuing a Bachelor’s or Master’s degree in STEM, Economics, or a related field

·      Strong analytical and structured thinking

·      Curious, proactive, and eager to learn

·      Ability to understand complex business processes

·      Strong communication skills

·      High attention to detail

·      Comfortable working independently while asking questions when needed

·      Fluent English

Mindset

·      Pragmatic and solution-oriented approach to problem solving

·      Comfortable working in a growing startup environment

·      Collaborative and able to work across teams

Nice to Have

·      First experience with Agile software development (Scrum or Kanban)

·      Experience with Jira or Confluence

·      Basic understanding of software development or programming

·      Interest in SaaS products and modern software engineering

·      Familiarity with AI productivity tools (e.g. GitHub Copilot or Cursor) is a plus

·      Interest in the energy industry

We offer you

·      Real ownership from day one

·      The opportunity to work directly with experienced leaders in a fast-growing energy tech company

·      A pragmatic and collaborative working environment

·      Flexible working arrangements (Core working hours 10 am to 3 pm))

·      A modern office well connected near Potsdamer Platz with the option to work partially from home

·      Employee´s perks: discounted electricity tariff, Tuesday to Thursday, lunch in the office is on us!