Senior Data Engineer

Build the data platform powering Europe's energy transition Do you want your work to have a real-world impact? At Gridle (gridle.com), we're building the technology that helps grid-scale battery energy storage systems participate intelligently in electricity markets. Our platform combines data, machine learning, optimization, and automation to maximize the value of flexible energy assets while supporting a more reliable and sustainable energy system. We're looking for a (Senior) Data Engineer to help scale the data platform behind our real-time trading and battery optimization services. You will work closely with data scientists, software engineers, mathematicians, traders, and energy market experts who are building the next generation of algorithmic trading and optimization solutions for energy storage assets across Europe. About Gridle Gridle combines AI, data, automation, and advanced control technologies to optimize battery energy storage systems and other flexible energy assets. We manage more than 500 MWh of energy storage capacity and are rapidly expanding our grid-scale BESS business across Europe. We operate as a scale-up: ambitious, product-driven, and fast-moving. We are part of Elisa Industriq, a global industrial software company with over 1,500 professionals worldwide. This gives us the agility of a startup together with the stability, resources, and long-term commitment of an established technology company. What You'll Do As a Data Engineer, you will help design, build, and operate the data platform that powers our products, optimization algorithms, analytics, and machine learning capabilities. Our technology stack includes AWS, Databricks, Python, SQL, Spark, Delta Lake/Iceberg, GitHub Actions, and modern observability tooling. Your Responsibilities Include Designing and developing reliable and scalable data pipelines. Building integrations to market platforms, telemetry systems, operational services, and third-party data sources. Developing data products that support forecasting, optimization, analytics, and machine learning. Improving the reliability, observability, performance, and cost-efficiency of our data platform. Working closely with software engineers, data scientists, and product teams to solve challenging business problems. Taking ownership of critical components of our platform as we scale our operations across multiple European markets. What We're Looking For We are interested in engineers who enjoy solving complex data and software engineering challenges and who take pride in building robust, maintainable systems. You Likely Have 4+ years of experience in data engineering, software engineering, or a similar technical role. Strong Python, SQL, Databricks and Apache Spark skills. Experience building cloud-native systems and data processing pipelines. Hands-on experience with AWS or another major cloud platform. Experience designing and implementing data models and data pipelines. Experience with batch and streaming data processing. Familiarity with Infrastructure as Code and CI/CD practices. Experience with schema management, validation, and evolution. A passion for writing maintainable, well-tested, production-grade code. Strong communication skills and professional fluency in English. Bonus Points If You Have Experience With Energy storage systems, electricity markets, or energy trading. Apache Iceberg, Parquet, Avro, or similar modern data storage technologies. Modern analytics and query engines. The wider Apache ecosystem. Data quality frameworks and automated validation. Don't worry if you don't have prior experience in energy markets. We can teach the domain. What matters most is your ability to build high-quality data systems and your willingness to learn! Why join Gridle? This is an opportunity to work on technically challenging problems that have a direct impact on the energy transition. You'll Get Meaningful ownership and influence over the evolution of our data platform. The opportunity to work with modern cloud, data, and machine learning technologies. A cross-functional team of engineers, data scientists, mathematicians, traders, and domain experts. Flexibility in where and how you work. The chance to help build a rapidly growing business within one of Finland's most respected technology companies. Most of our team is based in Helsinki, with colleagues also in Tampere and Turku. We support flexible working arrangements across Southern Finland. If you're excited about building the data platform behind large-scale battery optimization and real-time energy trading, we'd love to hear from you. If you have any questions about the role, please reach out to the hiring manager Ezgi Ozan, Head of AI at Gridle, at ezgi.ozan@elisa.com . Elisa has been ranked as one of the Finland's best employers for many years, for many reasons: huge amounts of flexibility, a friendly and laid-back working environment, great leadership that we are truly proud of, a continuous curiosity and an innovative aim to develop, as well as a fundamental invitation to come as you are. We understand and honor the fact that each Elisian comes with families, hobbies, problems, backgrounds and lives of their own. Read more about Elisa and the Elisians here.