VISPIRON GmbH Senior Software Engineer (m/f/d) - SEtrade Munich, Germany (hybrid) Employee Software Development €70,000 to €100,000 / year Electricity can’t be stored. That’s not just a figure of speech—it’s physics. This physics gives rise to a market that trades in 15-minute intervals and shows no mercy. That’s exactly where our software comes into play. Today, we manage 350 MWp of solar, 100 MWp of wind, 100 MWh of storage, 12 MW of hydrogen, and over 40 HPC charging points. Each of these facilities provides time series data. If one link in this chain is twenty minutes late, it costs money. Spreadsheets designed for millions of rows now hold billions. We’re looking for someone to rebuild it while it’s still running. Responsibilities WHAT YOU’LL ACTUALLY BE DOING You’ll decide how our systems are structured—not in a committee, but by proposing a solution, defending it, and then implementing it. PostgreSQL and TimescaleDB, schedules, metrics, market data. If something goes wrong at night, no one should have to fix it manually in the morning. Market premiums, PPA and storage remuneration, surcharges, charging processes, GHG quotas. PHP with Laravel, React, PostgreSQL/TimescaleDB, Python. A billing run must be restartable after a year with corrected network operator data and must provide a transparent explanation of why the result has changed. Qualifications HOW WE MEASURE YOU After 90 days, you’ve eliminated a structural bottleneck, and it’s measurable. The last point counts just as much as the two before it. You’ve worked with time series in the billions and know what a poor partitioning scheme feels like when it’s two years old. And you’ve seen what happens when it doesn’t. PHP with Laravel, React, PostgreSQL. Craftsmanship, not just a project. German at the C1 level or higher, because you’ll be communicating with grid operators, customers, and market partners. Fluent English. Benefits WHEN YOU’LL BE UNHAPPY HERE If you need a ready-made requirement before you start. If “it runs locally for me” means “done” to you. Modern AI tools as standard, not just a pilot project. Professional development, maximum capital-forming benefits, and company fitness programs. Opportunity to advance to Lead Engineer or Software Architect as soon as the workload allows. A system you played a major role in designing, and—in three to five sentences—the decision you most regret about it today. We’ll read it first. YOUR CONTACT Lara-Theresa Masur 49 151 27657632 VISPIRON GmbH 201-500 employees Software development We supply clean electricity directly to businesses and charging stations—at dynamic prices that follow the sun. AI-controlled, it perfectly integrates solar power, energy storage, and mobility to deliver maximum performance and true independence. People who are ready to give it their all to make the future a reality faster. Website LinkedIn Contact Person LM Lara Masur Recruiting Team