Portfolio Manager NL F/H/X
Flexcity
Company Overview
Flexcity, a subsidiary of Veolia
Brussels, Belgium
2012
Approximately 100 employees (source: linkedin.com). Revenue figures are not specified, but Veolia reported consolidated sales of €45.3 billion in 2023 (source: veolia.com).
What They Do
Flexcity specializes in aggregating electrical flexibility, optimizing demand response and short-term electricity markets through smart grid solutions. This includes the use of batteries, renewable energy sources such as distributed generation and wind power, as well as industrial processes like electrolyzers and electric boilers (power-to-heat). Flexcity does not focus directly on hydrogen or large-scale solar/wind energy development (source: flexcity.energy). Their main products and services include a proprietary platform for connecting, operating, and optimizing assets in markets such as intraday, day-ahead, and secondary reserve services (source: flexcity.energy). Target markets include balancing services and ancillary services in Europe, with clients in various sectors such as water treatment, waste recovery, and battery energy storage systems (BESS) (source: flexcity.energy). Flexcity has distinguished itself as a market leader since 2012, managing over 3 GW of flexible power, equivalent to that of a nuclear power plant, and was the first to innovate in aFRR aggregation in Belgium (source: flexcity.energy).
Projects and Background
Flexcity has completed several notable projects, including its integration into TenneT's aFRR market in the Netherlands in 2023 via Equigy's Crowd Balancing platform, which aggregates batteries and industrial processes for grid balancing (source: equigy.com). In France, the valorization of hundreds of Veolia Water's storage/inertia sites has been implemented over several years, along with the use of Orange's backup batteries since 2017 for demand response (source: flexcity.energy). In Belgium, projects such as the participation of the Aquiris wastewater treatment plant and the Beneo Orafti food site in aFRR have been completed (source: flexcity.energy). Ongoing projects include a BESS optimization in the Netherlands scheduled for January 2025 and the integration of the secondary reserve from Veolia's Lapouyade waste site in France (source: flexcity.energy).
Recent Developments
Over the past two years, Flexcity has announced several partnerships, including a collaboration with enspired for BESS optimization in the Dutch and Belgian markets, with initial contracts secured (source: flexcity.energy). The integration of the secondary reserve from the Lapouyade site in France is also planned for January 2025, marking a first for a waste storage site (source: veolia.com). In 2023, Flexcity successfully prequalified for TenneT's aFRR market in record time, demonstrating its agility and efficiency (source: equigy.com). No major acquisitions or external funding have been reported, with growth primarily driven by integration within Veolia since 2019 (source: flexcity.energy).
Working at Flexcity
Flexcity offers positions in product management, R&D, portfolio management, IT/data engineering, sales, and operations, with strong inter-team collaboration. Roles include positions such as Product Manager - Energy Flexibility Markets, focused on developing the platform for asset valorization (source: welcometothejungle.com). Recruitment is active at the Brussels headquarters (Saint-Gilles) for technical and product roles, with no specified remote work options (source: linkedin.com). The company culture emphasizes the agility of a startup with the support of Veolia, innovation at the core of operations, and transparency in processes (source: flexcity.energy). While specific benefits are not detailed, roles highlight impactful work in the energy transition, with potential benefits related to Veolia's ecological transformation initiatives (source: welcometothejungle.com).
Last updated on Feb 23, 2026 | Report an issue
At Flexcity, we help the European power system become smarter, more flexible, and more sustainable by connecting industrial assets (batteries, e-boilers, heat pumps, data centers...) to energy markets.
A subsidiary of Veolia Group, we combine scale-up agility with the stability of a global leader. As we scale our 3GW portfolio across multiple European markets, tech and operational excellence are core business drivers, powering optimization and financial performance across Europe.
We are looking for a Portfolio Manager F/H/X to join our Amsterdam office.
Job Description
As Portfolio Manager, you will report to the Country Operations Manager and take full ownership of the Dutch energy portfolio - optimizing its performance, maximizing its value, and ensuring seamless operations across all assets.
Your role sits at the intersection of energy markets, asset operations, and client relationships. You will work in a high-autonomy environment where your decisions have a direct financial impact.
Your role is structured around three main areas:
- Operational Management
- Define and execute the bidding strategy across ancillary services and wholesale markets to maximize portfolio value
- Monitor asset delivery and apply proactive risk management
- Onboard new assets in collaboration with the engineering team
- Participate in the on-call rotation to ensure operational continuity outside regular working hours
- Account Management
- Build and maintain strong relationships with clients and partners
- Proactively address customer needs to drive satisfaction, reduce churn, and foster long-term growth
- Act as a trusted point of contact for your client portfolio
- Reporting & Settlements
- Report and communicate operational results to customers and partners
- Manage financial settlements across the contractual stakeholders of your portfolio
- Ensure accuracy, transparency, and reliability of financial outputs
Qualifications
Experience & Technical Skills
- 5+ years of experience in the energy sector, with strong expertise in electricity markets
- Solid knowledge of ancillary services and wholesale power trading
- Deep understanding of flexible energy assets: battery storage, co-generation (CHP), renewables
- Proficiency in financial settlements and contract management
- Hands-on experience with Google Cloud Platform (GCP) and solid SQL skills
- Fluent in English; Dutch is a strong plus
Soft skills
- Strong communication and stakeholder management skills
- Analytical mindset, comfortable interpreting complex data and turning it into decisions
- Intrapreneurial and proactive: you take ownership and move things forward
- Positive, pragmatic, and professional attitude
- Comfortable in fast-moving environments : you adapt quickly, think outside the box, and enjoy sharing knowledge
Benefits
- Highly competitive remuneration package
- Company car or flexible mobility arrangement
- 30 days of annual leave
- Additional paid time off through the on-call remuneration framework
- Performance-related bonus aligned with company and individual objectives
- A collaborative, multinational team with high technical standards
- Strong opportunities for personal and professional growth
Interview Process
- HR / Talent Acquisition interview (45 min, remote) - Career path, recruitment context, motivations
- Line Manager interview (1h, remote) - Deep dive on the role, team, and market challenges
- Case study with Line Manager and a team member (1h30, in person) - Case discussion and experience debrief
As an inclusive company, Veolia is committed to diversity and gives equal consideration to all applications, without discrimination.
Apply now
Job expired?Please let Flexcity know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
Apply now
Job expired?Please let Flexcity know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
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About the role
June 24, 2026
June 24, 2026
Full time
On-site
Company
- Oude Meer, the Netherlands
5+ years in the energy sector
UTC+01:00