(Senior) Controller (f/m/x) – Renewable Energy

suena GmbH

  • Hamburg
  • Post Date: 10. September 2025
Job Description

Hamburg Hybrid | Full Time | 65.000 – 95.000 EUR p.a. | 30 days of vacation | Permanent position

Are you enthusiastic about intelligent and effective software solutions to the energy transition? Join us at suena energy and support us in establishing clear, reliable finance processes, taking full ownership, and becoming the go-to person for all controlling and reporting topics.

suena energy is a green tech startup specializing in algorithmic energy trading for energy storage systems and renewable energies.

Our vision: a world where clean energy is used reliably, economically, and intelligently. With our AI-based optimization and trading software, we maximize the revenues of operators of large-scale energy storage and renewable assets on short-term electricity and balancing markets—while simultaneously minimizing their risks.

We are a 30-people team, which combines coziness and fast-paced dynamics. We are actively scaling this year, welcoming new talents!

This is a greenfield role: as the first hire in Finance, collaborating directly with our CFO, you'll play a key part in building and evolving our controlling, reporting and financial planning landscape from day one.

(Senior) Controller (f/m/x) - Renewable Energy


  • Set up, own, and continuously develop all controlling and reporting processes—covering investor reporting, monthly management reports and financial forecasting.
  • Automate and streamline workflows using tools like Hubspot, Datev, Candis and Power BI.
  • Analyze and project cash flows, develop scenarios and ensure financial transparency for our growing asset portfolio.
  • Work closely with Miguel (CFO), tax advisors, and cross-functional teams (Sales, Customer Success, Data Science) to integrate financial data, support budgeting and align on business goals.
  • Contribute to strategic finance topics, such as developing collateral solutions for power trading and supporting financial analysis for our European expansion.
  • Proactively identify and resolve issues, challenge assumptions and ensure our numbers are always accurate, understandable and actionable.


  • Proven success building and shaping controlling and reporting structures—ideally in a growth or startup environment.
  • Strong finance know-how and solid grasp of financial statements & accounting (HGB is a plus).
  • Advanced Excel skills. Hands-on experience with tools like Hubspot, Datev, Candis and Power B is a plus.
  • Experience automating finance processes (e.g. billing, reporting).
  • Fluent German (min. B1) for tax/legal topics and English (min. B2) for internal collaboration.
  • You're structured, reliable, and detail-oriented as well as proactive, hands-on, and comfortable taking responsibility.
  • You have an analytical mindset with the drive to question processes, spot errors, adapt quickly, and thrive in a dynamic startup environment.
  • You're curious and willing to dive into the energy and trading sector (experience is a plus, but not a must).


  • Shape the Future: Help drive the energy transition with us! Join a booming market, real startup spirit, and make your mark in sustainability.
  • Connecting & Co-Creating: Strategy off-sites (like Denmark 2024) and onsite weeks for real collaboration and shared ideas.
  • Work Your Way: Home office and flexible hours – you know what works best for you and your team.
  • Team Spirit: Yoga, shared lunches, after-work fun – we support each other and keep the vibe strong, even when it's busy. Barista, DJ, guitarist included – we can't wait to discover your hidden talent!
  • Fair & Transparent: Clear structures, democratic decisions, and a feedback culture where your voice counts.
  • Body & Mind: Urban Sports Club membership, wellbeing check-ins, and mental health support – your energy matters.
  • New Office Vibes: 10th-floor office with rooftop terrace, canteen, great views, ergonomic desks, hardware of your choice, and pet-friendly!
  • Sustainable Extras: Deutschlandticket, FutureBens, and more – supporting your mobility and future.

View More