Fullstack Engineer

EnergyHub (part of ) is looking to hire a Full Stack Software Engineer II to join the Ground Control platform team.  There, you will play a critical role in ensuring the scalability and flexibility of our product by abstracting partner and client specific complexities to enable other internal teams to build new features and functionality quickly. This is an opportunity to join a highly energized team of engineers eager to define and develop key concepts, solve complex challenges with real-world constraints and have a positive impact on our climate future. We will be focusing on migrating from a monolithic to a microservices architecture and delivering well defined contracts to the broader organization.

We're seeking a candidate who is passionate about software engineering and thrives in a collaborative environment. Your eagerness to contribute to the team's success and the wider organization will be key. In this role, you will be responsible for designing, developing, and maintaining complex backend and web applications using Java and React. You will play a key role in all stages of the development lifecycle and work closely with cross-functional teams to deliver robust, scalable solutions. You will be pivotal in creating and maintaining the service architecture, platform, and tools necessary for a scalable, reliable, observable, and performant microservices ecosystem.

The team values working together and collaborating in person. We are building a new team in Krakow. Our employees work fully from the office with possibility to work remotely occasionally.

Main Responsibilities: What you'll do

• Design and implement high-quality, scalable, and secure backend services using Java (Spring Boot).
• Participate in code reviews, mentoring junior developers, and driving best practices in software development.
• Troubleshoot, debug, and optimize application performance.
• Collaborate cross-functionally with product managers, internal engineering teams, and stakeholders to drive high-impact projects.
• Work within real-world constraints to develop creative solutions that maintain platform flexibility and scalability.
• Ensure best practices in CI/CD, unit/integration/e2e testing, and code quality.
• Stay up-to-date with emerging technologies and industry trends

Required Skills and Experience: What you need

• 3+ years of professional software engineering experience, preferably with prior senior-level responsibilities.
• Strong experience with Spring Framework.
• Strong experience in Java (preferably Java 11+) and experience with at least one scripting language (e.g., Python3).
• Excellent problem-solving skills, analytical thinking, and attention to detail.
• Strong communication and collaboration skills.

Preferred Skills and Experience: Nice-to-haves

• Experience with PostgreSQL, MongoDB, AWS, and Robot Framework.
• Familiarity with cloud platforms (AWS, Azure, or GCP) and deployment strategies.
• Exposure to frontend technologies (ex. React).
• Experience building client-facing APIs and supporting developers integrating with those APIs.
• Ability to work across team boundaries to identify and solve pain points that affect engineering velocity, system resilience, and system/service performance.

Why work for

• Collaborate with outstanding people: Our employees work hard, do great work, and enjoy collaborating and learning from each other.
• Make an immediate impact: New employees can expect to be given real responsibility for bringing new technologies to the marketplace. You are empowered to perform as soon as you join the team
• Gain well rounded experience: We offer a diverse and dynamic environment where you will get the chance to work directly with executives and develop expertise across multiple areas of the business.
• Work with the latest technologies: You'll gain exposure to a broad spectrum of IoT, SaaS and machine learning obstacles, including distributed fault-tolerance, device control optimization, and process modeling to support scalable interaction with disparate downstream APIs.
• Be part of something important: Help create the future of how energy is produced and consumed. Make a positive impact on our climate.
• Long-term employment based on a permanent employment contract (CoE).
• Attractive benefits package: including medical care, life insurance, sports package, annual budget for professional development ($2,000).

About EnergyHub

EnergyHub empowers utilities and their customers to create a clean, distributed energy future. We help consumers turn their smart thermostats, EVs, batteries, and other products into virtual power plants that keep the grid stable and enable higher penetration of solar and wind power.

EnergyHub is an Equal Opportunity Employer

In connection with your application, we collect information that identifies, reasonably relates to, or describes you ("Personal Information"). The categories of Personal Information that we may collect include your name, government-issued identification number(s), email address, mailing address, other contact information, emergency contact information, employment history, educational history, criminal record, and demographic information. We collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies. By submitting your application, you acknowledge that we may retain some of the personal data that you provide in your application for our internal operations, such as managing our recruitment system and ensuring compliance with labor laws and regulations, even after we have made our employment decision.We will retain this data for a maximum of 3 years after the end of the recruitment process. The data administrator is EBS Sp z.o.o.