Staff Software Engineer (m/w/d) (offen)

Stem is a global leader reimagining technology to support the energy transition. Turning complexity into clarity, and potential into performance.

We help asset owners, operators and stakeholders benefit from the full value of their energy portfolio by enabling the intelligent development, deployment, and operation of clean energy assets. Our integrated software suite, PowerTrack, is the industry standard and best-in-class for asset monitoring, supported by professional and managed services, under one roof. Meant to tackle challenges as seamlessly as possible, Stem shows the information needed clearly and accurately and helps harness raw data to inform actionable insight. With global projects managed in 55 countries - from Germany to Japan and across North America - customers have relied on Stem for nearly 20 years to maximize the value of their clean energy projects.

Stem's culture embodies diversity & inclusion beyond the traditional facets of gender, ethnicity, age, disabilities, and sexual orientation to include experience, personality, communication, work styles, and more. At our core, Stem is at the momentous intersection of clean energy and software technology where diverse ideas, experiences, and professional skills converge to make the inclusive culture we have today. Together, we are turning old school thoughts about software and energy into progressive, collaborative, and innovative solutions. By joining our team, you will be collaborating with data scientists, energy experts, skilled salespeople, thought-leading executives and more from a range of backgrounds. This intersection of ideas, beliefs, and skills is what makes us unique enough to lead the world's largest network of digitally connected energy storage systems.

What We Are Looking For

Stem is seeking a highly skilled Staff Software Engineer to serve as a technical leader and architect across our clean energy software platforms PowerTrack®. You will drive the design and implementation of scalable, high-performance systems that manage vast volumes of energy data and deliver intuitive user experiences. This role demands deep technical expertise, strategic thinking, and the ability to mentor and influence engineering teams as we accelerate the clean energy transition.

Key Responsibilities

• Data Pipeline Architecture - The role will be responsible for overseeing and alignment of the current and future design, and architecture of data processing. Experience in distributed event streaming platforms is preferred.
• Act as technical liaison between engineering, product, and business stakeholders to ensure architectural decisions support strategic objectives
• Design, develop, and maintain end-to-end full stack features across web applications, from user interface to backend services and database integrations.
• Ensure proper security best practices are followed for all aspects of development and deployment of production systems/services.
• Participate in code reviews, provide constructive feedback, and mentor junior developers.
• Stay current with emerging technologies and propose new tools that improve development efficiency and quality.
• Collaborate with DevOps teams to implement CI/CD pipelines, containerization strategies, and monitoring solutions for deployed applications.

Required Qualifications

• B.S./M.S. in Computer Science or related field, or equivalent experience.
• 8+ years in full stack development with a track record of delivering complex applications.
• Technical Skills:
  • JavaScript (ES6+), HTML5, CSS3, TypeScript
  • React (preferred), Angular, Vue.js, Node.js
  • Redis
  • C# (preferred), fluency in other languages is a plus
  • RESTful APIs, GraphQL (a plus)
  • SQL/NoSQL databases
  • AWS platform, Kubernetes
  • Git, CI/CD tools (GitLab CI, GitHub Actions)
  • Testing frameworks and TDD

Preferred Qualifications

• Time-series databases and IoT data processing.
• Data analytics and machine learning concepts.
• Real-time data streaming and processing.
• Responsive design principles and/or mobile application development (React Native, Flutter, or native iOS/Android).
• Charting libraries and data visualization frameworks (D3.js, Chart.js, Plotly).
• Knowledge of energy industry standards and protocols.
• Background in building applications for regulated industries.
• Contributions to open-source projects or active technical community involvement.

Engagement Model

This is a remote B2B contract position based in Poland or Romania. You will collaborate with a globally distributed team primarily operating within CET/CEST working hours.

Please Note

While this position is remote, occasional trips to the Berlin office may be required

To learn more about Stem, visit our stem.com where you'll find information about our solutions, technology, partners, case studies, resources, latest news and more. Here are some relevant links:

• Company Overview
• Newsroom
• Insights
• LinkedIn