Job description
Become a Senior Project Engineer ESS at Alfen! Contribute to the smart technology that powers Europe's energy infrastructure. Translate customer needs into advanced electrical designs and help shape innovative, safe and sustainable battery energy storage projects.
What will you do?
As a Senior Project Engineer ESS, you hold technical responsibility for modular energy storage projects - from the initial sales proposal all the way to a fully installed, tested and commissioned system. You work closely with project managers, installation managers, designers, production teams and customers to deliver high‑quality, compliant and safe solutions.
Your main responsibilities include:
- Translating customer requirements into creative, functional and technically robust electrical designs.
- Designing, reviewing and optimising electrical schematics, technical drawings and bills of materials.
- Performing electrical calculations and ensuring compliance with national and international standards (including IEC guidelines).
- Coordinating with internal and external technical teams to ensure alignment and consistent project execution.
- Supporting product, FAT and control system testing on site.
- Providing technical input during both pre‑sales and after‑sales phases.
- Actively contributing to product improvements, quality enhancements and standardisation within BESS solutions.
What do we ask of you?
We focus on technically strong engineers who can translate complex customer requirements into practical, future‑proof electrical designs. You are analytical, precise and thrive in a project‑driven engineering environment. You bring:
- A bachelor's or master's degree in Electrical Engineering, Energy Systems, Energy Technology or a comparable discipline.
- In‑depth knowledge of energy systems and experience analysing and improving electrical drawings.
- Experience with MS Office, PDM and ERP systems.
- The ability to organise your work systematically and coordinate across multidisciplinary teams.
- A proactive, innovative mindset and strong problem‑solving skills.
- Good command of the English language; Dutch is a plus (language courses are available).
- A VCA VOL certificate, or willingness to obtain one.
These qualifications perfectly match our target group: analytical and structured engineers with a strong electrical foundation who want to make an impact in energy storage projects.
What do we offer you?
At Alfen, you work on technology that truly makes a difference. You will join an innovative, international organisation where initiative and development are encouraged. We offer:
- An attractive salary in line with the Metalektro Collective Labour Agreement.
- 27 vacation days + 13 ADV days per year.
- Flexible working hours and hybrid working options.
- Travel allowance (€0.23 per km, up to 50 km one way).
- A solid pension scheme via PME, with a generous contribution from Alfen.
- Access to our extensive learning and development platform.
- A close‑knit team, short communication lines and a modern, innovative working environment.
Where will you work?
You will work at Alfen's headquarters in Almere, where engineering, production and project management operate closely under one roof. From this central hub, you contribute to European energy storage projects that directly accelerate the energy transition.
Interested?
Do you want to make an impact with smart electrical solutions in sustainable energy storage? Apply now via the "Apply now" button. Curious about our recruitment process? Click here.
Please note: A reference check, screening and Certificate of Good Conduct (VOG) may be part of the procedure. Applications are reviewed continuously, so don't wait too long to respond. Acquisition based on this vacancy is not appreciated.
Pay & benefits
Typical pay for similar roles
EstimateThe middle half of pay advertised on Rejobs for this group over the last 24 months. This employer has not stated a salary.
About this role
About ALFEN
Company Overview
Alfen N.V.
HeadquartersAlmere, Netherlands
Founded1937
SizeApproximately 900 employees worldwide. Revenue of 435.6 million in fiscal year 2025 (source: marketwatch.com, alfen.com)
What They Do
Alfen is a leading Dutch company specializing in network technology and electrification, focusing on three main segments: Smart Grid Solutions, EV Charging, and Energy Storage Systems (source: alfen.com). The company provides advanced infrastructure products such as medium voltage and distribution equipment for grid operators and large private customers, including compact transformer stations (source: alfen.com). In the EV Charging segment, Alfen manufactures hardware and systems for charging points, producing 61,254 charging points in the first half of 2025 (source: alfen.com). Additionally, the company develops utility-scale battery storage systems, such as TheBattery Elements and mobile storage solutions, with projects measured in megawatts and megawatt-hours (source: alfen.com). Its customer base includes grid operators, private clients, renewable energy developers, utilities, public transport companies, and industrial infrastructure customers (source: alfen.com). Alfen stands out through an integrated model of hardware and project delivery, a long history in the Dutch grid infrastructure, and the combination of transformer stations, EV charging hardware, and storage within one organization (source: alfen.com). In Q3 2025, 62% of revenue from Smart Grid Solutions came from grid operators, highlighting strong ties with regulated customers (source: alfen.com).
Projects & Experience
Alfen has completed several major projects in energy storage and grid infrastructure. In April 2025, the company secured its largest energy storage deal to date with Return Energy: a 100MW/200MWh system in the Netherlands, connected to the Dutch transmission grid operated by TenneT, with planned delivery by the end of 2026 (source: contentstack.com, roic.ai). Another key battery project is FlevoBESS, a 31.6MW/126.4MWh system in the Netherlands, one of the country’s first large-scale four-hour systems (source: ipo.alfen.com, contentstack.com). In Finland, Alfen delivered a 20MW/40MWh energy storage system for Oulun Energia, including support for grid code testing and additional services (source: alfen.com). The company also supplied a 20MW/40MWh BESS for E-Connection near Neeltje Jans in the Netherlands, aimed at grid stabilization and wind energy integration, with commissioning planned for Q1 2026 (source: alfen.com). In grid infrastructure, Alfen delivered seven compact transformer stations for a pilot project with WATT Infra and carried out medium voltage installations for the Eekerpolder solar park by Belectric, a project of approximately 200MWp in the Netherlands (source: alfen.com). The company also provided custom medium voltage walk-in transformer stations for the Belgian public transport company TEC in Wallonia, supporting the electrification of their fleet (source: ipo.alfen.com). While Alfen is primarily strong in the Netherlands, these projects also demonstrate an active commercial presence in Belgium, Finland, and Sweden (source: ipo.alfen.com, alfen.com).
Recent Developments
In 2025, Alfen reported a revenue decline to 435.6 million, down from 487.6 million in 2024, and implemented a significant workforce reduction to 923 FTEs as part of a restructuring and a more selective growth strategy focused on profitable segments (source: alfen.com). For 2026, the company anticipates revenue between 435 million and 475 million with an adjusted EBITDA margin of 4% to 7% (source: alfen.com). In the first half of 2025, revenue was 211.5 million, with weaker performance in EV Charging and Energy Storage being the main causes of the decline (source: alfen.com). In Q1 2025, revenue guidance was adjusted to 430 million to 480 million, with CAPEX below 4% of revenue (source: contentstack.com, roic.ai). In Q3 2025, revenue of 104.1 million was confirmed, along with further operational efficiency measures (source: alfen.com).
Working at Alfen
Alfen recruits staff across three main areas: hardware and engineering for networks, product and project work for EV charging solutions, and battery storage systems with project execution (source: alfen.com). Roles include electrical engineering, project management, manufacturing, supply chain, field service, sales, and financial functions such as investor relations (source: alfen.com). The headquarters is located in Almere, with commercial and operational activities in Belgium, Finland, and Sweden, based on recent projects (source: alfen.com, ipo.alfen.com). The company is currently undergoing an active restructuring phase, focusing on cost savings, workforce reduction, and improving backlog quality (source: alfen.com). For job seekers, this means Alfen is an industrial technology employer focused on designing, producing, integrating, and delivering electrification equipment and storage solutions for utilities and infrastructure customers (source: alfen.com).
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