Java Developer (m/f/d)
Optimax Energy GmbhLeipzig, Saxony, Germany
Posted August 13, 2025
Full Time
About the Company
OPTIMAX ENERGY GmbH is a tech-driven energy company founded in 2013. Specializing in renewable energy trading and software development, they offer innovative solutions for power plant scheduling, direct marketing, and short-term optimization. Committed to sustainability, the company plants mangroves through partnerships with Eden Projects and fosters an eco-friendly culture across all departments.
Job Description
Since 10 years, this company has been developing smart trading solutions and promoting the transition to green energy. They are seeking an enthusiastic Java developer to join their multicultural team and contribute to the maintenance and improvement of their software services and driving innovation. They prioritize diversity, equality, and inclusion.
Requirements
- At least 5 years of professional experience in software development with 3+ years in Java (Version 11+)
- Understanding and application of software design patterns
- Safe handling of Git in daily work
- Proficiency with unit and integration testing
- Deep knowledge of SQL for writing queries and relational database systems
- Experience in designing and using API services
- Experience in creating and managing Java projects with Maven
- Proficiency in threads, Java Executors, concurrency models and asynchronous programming
- Good communication skills in English (B2)
- Agile method experience (Scrum, Kanban)
- Experience with Docker, Jenkins, CI/CD pipelines
Benefits
- Health & Wellbeing
- Massage and Pilates in the office
- GYMWellpass
- Sports and mobility offers
- Flexible working arrangement and bonuses
- Career development and further training
- Autonomy and responsibility in project management
- 10% of weekly working hours for personal and professional development
