Senior Software Engineer (d/m/f)

Location: Munich, Germany

Short Facts

• Employment Type: Full‑Time, indefinite term
• Salary Range: € 88,000 – 115,000 per year gross, depending on seniority level
• Working mode: In office
• Language Requirement: C1 Level English

Your Responsibilities

• Design, craft and maintain our VPP system end‑to‑end, across dimensions such as data ingestion and processing, energy management system (EMS), optimization logic implementation, fleet control, accounting and settlement
• Work cross‑functionally, especially with data scientists to support them in the implementation of our optimization logic, automated trading execution, and battery control
• You will mentor and guide team members and improve their workflows by bringing your best knowledge to the team
• Define and foster engineering best practices and spend time teaching engineers and data scientists how to design and deliver a well‑built, maintainable, iterable solution
• You will support your colleagues during onboarding, daily operations and strategic tasks
• Implementation of our optimization and trading algorithms with focus on immediate go‑lives and strategic, long‑term advancement of our platform
• Maintain and improve our tech stack and development environments and build infrastructure, from how services are developed and tested, to how they are built and integrated, to how they are monitored

Your Profile

Mandatory Requirements

• 5+ years experience in Software Engineering (Backend and algorithmic) in the cloud
• 2‑3 years experience with Python including object‑oriented design
• 2+ years experience in onboarding, mentoring and coaching junior colleagues
• Solid hands‑on experience deploying and operating production systems on a major cloud platform (AWS, GCP, or Azure)
• Evidence of pragmatic delivery
• Experience working cross‑functionally, especially with Product and Data Science teams
• Team player to effectively communicate complex ideas, capable of working on solutions individually
• Experience and desire to work in a dynamic, fast‑paced environment
• Strategic and analytical thinking
• Full business proficiency in English

Skills To Set You Apart

• Strong experience with AWS cloud platform and familiarity with services like ECS, RDS, Lambda, SQS, S3
• Energy industry experience

This won’t be the right role for you if…

• You don’t have the habit of defining your own tasks and expect other functions to do them
• You are used to working in clear separate functions

At Flexa, we are committed to diversity – of backgrounds and experiences. You don’t need 100% of the preferred qualifications to add incredible value to our team. If you’re passionate about what you could accomplish here, we would love to hear from you.

Your Compensation Package And Benefits

• Virtual Share Options: We offer virtual share options to all our employees
• Professional Development: Annual development budget of €3,000 for coachings, trainings, books, etc.
• Health & Sport Subsidy: Company subsidised sports facilities membership
• Public Transportation Subsidy: Monthly subsidy for your public transport ticket
• Lunch/Dinner Allowance Vouchers: Allowance for meals on working days as digital meal vouchers
• Work Equipment: MacBook Pro or Windows Laptop, and ergonomic workplace
• Regular Team Events: Knowledge Sessions, Afterwork, Sports, Offsites, Halloween, Pride Month, etc.

A Short Note from Your Future Lead

Hi there!
I'm Christian Buckl, Head of Software at Entrix & Flexa. My professional journey has been deeply rooted in the intersection of technology and industry, spanning areas such as autonomous driving and cloud‑based systems that serve millions of users. Over the years, I’ve had the privilege of contributing to various innovative projects and leading teams dedicated to pushing the boundaries of what’s possible in our field.

• At Lyft (2018–2024), I initially built the in‑car middleware system for autonomous driving. Later, my team and I developed the in‑house mapping stack—including the routing engine and ETA system—powering millions of rides.
• At Apple (2016–2018), I led a team in the Special Projects Group focused on autonomous systems.
• At Siemens (2015–2016), I spearheaded software development for a startup within Siemens, creating a hardware/software platform for autonomous electric vehicles.
• Before that, I was a founding member of fortiss, a non‑profit research organization in Munich.

At Entrix & Flexa, we believe that our success is built on the strength of our team. We foster a collaborative, forward‑thinking environment where everyone can thrive and make a meaningful impact. Having spent over eight years working for Silicon Valley companies, I bring that experience to help shape our innovative culture.

If you’re passionate about pioneering technological solutions and eager to join a dynamic and international team, I encourage you to explore the opportunities we offer. Together, we can drive innovation and achieve remarkable milestones.

Thank you for considering a future with us. I look forward to the possibility of working together to shape the future of technology,

Christian

Contact Information

Your contact person is Ekaterina Davydova ( )

About Us

Flexa, a joint venture between Enpal and Entrix, is chartered with delivering a Virtual Power Plant (VPP) that delivers exceptional energy cost savings while supporting the transition to a 100% renewable electricity future.

The combination of delivering complete residential energy systems at great cost with savvy market participation in several revenue streams sets us up to deliver real‑world customer savings while improving customer satisfaction and enjoying the advantages of a fully electrified and energy‑producing home.

Through a deep integration into the installed hardware and a direct connection to the customer interfaces, Flexa’s solution controls the energy assets (such as EV, heat pump, home storage and others) of the entire Enpal energy community with an exceptional level of accuracy, speed, transparency, and thus customer satisfaction. With intelligent real‑time dispatching algorithms, Flexa maximizes Enpal customers’ usable flexibility and its returns on energy markets, including grid fees, asset degradation costs, etc.

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