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Deftpower

Senior Cloud & Azure SQL Database Engineer

Join Deftpower in Arnhem as a Senior Cloud & Azure SQL Database Engineer. Manage scalable Azure SQL databases, ensure data security, and collaborate with developers. Enjoy flexible hybrid work, your choice of laptop, and a supportive, innovative team driving sustainable electric charging solutions.
Deftpower
Deftpower
Arnhem, the Netherlands Hybrid Full time EUR 6k–8k monthly UTC+01:00

Deftpower

Company Overview

Deftpower B.V.

Arnhem-Nijmegen, Netherlands

2020

Approximately 70 employees (source: 4impact.vc). No public revenue data available for 2023 or later.

What They Do

Deftpower B.V. is a private cleantech startup focused on developing software for integrating renewable energy sources such as solar and wind energy into electric vehicle (EV) charging. Their technology includes an AI-supported SaaS platform and a white-label mobile application that enables smart charging, allowing vehicles to connect with networks, energy markets, and over 2,000 charging point operators across Europe. This allows them to reduce costs by up to 20% through dynamic pricing and prepare for vehicle-to-grid (V2G) functionality (source: cbinsights.com). Deftpower serves a wide range of clients, including e-mobility service providers, charging point operators, car manufacturers, energy suppliers, and grid operators, and has a platform that processes millions of transactions in 10 European countries (source: deftpower.com). Their products include a branded app for drivers that provides access to over 800,000 charging points, a business portal for electricity trading and fraud prevention, and developer APIs compatible with OCPI and ISO15118 protocols (source: deftpower.com).

Projects & Track Record

Deftpower has built an impressive track record by implementing its platform for over 40 clients managing widespread EV charging solutions. A notable project is the ongoing smart charging trial launched on May 15, 2025, in Amsterdam, designed as a potential model for global cities by optimizing grid load and renewable integration (source: cbinsights.com). Collaboration with over 40 EV brands and 2,000+ charging point operators strengthens their market position, although specific client names have not been disclosed (source: deftpower.com). Deftpower's platform is active in 10 European countries, focusing on expansion funded by their recent €12.5 million funding round (source: 4impact.vc).

Recent Developments

In the past two years, Deftpower secured €12.5 million in funding on August 29, 2025, led by Endeit Capital with participation from 4impact capital, Proeza Ventures, Rethink Mobility, and Jan Fredriks, supported by the EU's InvestEU Fund. This funding is intended to drive European expansion and AI enhancements for their platform (source: 4impact.vc). The Amsterdam smart charging trial, which began on May 15, 2025, marks a significant milestone in the practical implementation of their technology (source: cbinsights.com). So far, no acquisitions, mergers, awards, or additional certifications have been reported in the sources from 2024-2025, although CEO Jacob van Zonneveld's previous role in founding Plugsurfing (acquired by Fortum in 2018) highlights the continuity of leadership (source: vehicle-2-grid.eu).

Working at Deftpower

Deftpower currently has approximately 70 employees, growing from just over 50 previously. Roles include software development (API and backend for EV integrations), product management, sales, business development, customer service, and operations within engineering, IT, and cleantech functions in an agile team structure (source: 4impact.vc). The company has offices in Arnhem and Berlin, focusing on growth in EV software amid European expansion (source: deftpower.com). The company culture emphasizes technical excellence, rapid execution, and creating clarity from the chaos of the industry, with values aimed at stakeholder success, both economically and ecologically (source: deftpower.com). Specific benefits are not documented in public sources.


Last updated on Feb 23, 2026 | Report an issue

Job Description

At Deftpower, we're shaping the future of electric charging every single day. Our SaaS-platform helps businesses across Europe make charging simpler, smarter, and more sustainable. With AI and intelligent software, we make sure charging works seamlessly with the energy grid, creating a greener and more stable system for everyone.

We're growing fast, thanks to a recent major investment, and there's never a dull moment! We're expanding, improving our technology and teaming up with companies in over ten countries.

Our tech

The Deftpower platform is built in C#/.NET. We are heavily using Azure Functions to keep our platform as scalable as possible. We adopt a microservice architecture where services communicate with each other mainly via the Azure Service Bus. Data storage is done in a variety of ways, but Cosmos and Azure SQL databases are used most. Monitoring and logging is done with Application Insights and Grafana as well as PowerBI dashboards. The portal that interacts with the backend is written in Angular, while our mobile applications are developed in React Native. In general, we use Azure's PaaS components wherever possible to stay up to date and ready for scale.

"I've never once looked at my watch hoping the day would be over. Everything I do feels meaningful."

Michael - Business Development Manager

About the job

You'll be our very first Database Engineer, the person who makes sure our data stays fast, clean and reliable while everything around it grows like crazy. Our platform is handling millions of transactions every day. As we scale, you'll be the one keeping our Microsoft SQL and Azure SQL databases secure.

You make sure data never slows us down. You'll monitor performance, automate what can be automated and keep our systems safe and steady. When a query drags or a dashboard lags, you already know where to look.

  • Design and maintain scalable Azure SQL and Microsoft SQL databases that run 24/7 without drama
  • Build smart backup and recovery setups
  • Keep data secure and compliant, working closely with our Security Officer Timo
  • Collaborate with developers in Platform, Roaming, Transaction and Smart Charging to keep data flowing smoothly between teams
  • set the standard for how we structure and manage databases as we grow

What your new colleagues say

Anja, Office Manager ''Everyone is incredibly committed and motivated to make something of Deftpower.''

Wierd, Teamlead Smart Charging "No politics, no unnecessary hierarchy. People say what they think and are honest."

Tim, Operations ''The connection between the charging pole, the car, and our app makes us unique. It's tangible technology anyone can understand.''

Timo, Team Lead "On day 1, after onboarding, you can already deliver something for a customer. You make impact very quickly."

For you

You'll have the space to build things your way. We trust you to decide what works best. You'll lay the foundation others will build on for years.

At Deftpower you'll find more than cutting-edge tech, you'll find a team that actually enjoys the ride! Colleagues say we are ambitious, friendly and flexible, with just the right amount of chaos to keep things interesting. Working at Deftpower is both rewarding and challenging. There are many moving parts, partners, suppliers, clients and we are a fast growing company that is still learning. You get support from talented colleagues, and a management team that's close, approachable and ready to roll up their sleeves. You get the space to shape your role, to take initiative, to make real decisions, test ideas and yes, sometimes break things. We call it 'learning fast'...

  • Salary range: Between ???6000,- and ???7600,- a month
  • Choose your own laptop to work with
  • A flexible setup: hybrid working, short decision lines and trust
  • All conditions such as holiday allowance, 25 vacation days, pension, etc.

"Everyone is driven to make customers happy, we don't just work for the sake of working."

- Florian, Team Lead

About you

You're the kind of person who gets energy from clean data, fast queries and elegant systems. You like solving puzzles that no one else even sees. You thrive in a fast-growing, tech-driven environment and enjoy working with a team that values innovation, transparency and impact. At Deftpower you succeed when you combine technical expertise with curiosity and collaboration.

You'll do great here if you:

  • 5+ years of experience with Microsoft SQL and Azure SQL (cloud or on-prem)
  • Know Azure PaaS inside out: tuning, scaling, automating, securing
  • You like collaborating with developers and helping teams use data smarter
  • You have a valid work visa for the Netherlands and can join us in Arnhem a few times a week
  • You are a match with our values! Drive, Earnest, Forward thinking and Transparency.

Our values

Drive You love turning ideas into action. You take ownership, push projects forward and get energy from creating solutions that actually work in the real world.

Earnest You do the right thing, especially when no one's watching. You're respectful, honest and reliable, colleagues know they can count on you.

Forward thinking You're curious and not afraid to try new things. You experiment, learn fast and spot opportunities before others see them coming. Calculated risks? You're in.

Transparency You believe sharing is power. You communicate openly, give constructive feedback and make your work visible so the whole team can grow together.

Join Deftpower!

Here's what you can expect when you apply at Deftpower:

Depentent on the role we do a quick introduction by phone to see if there's a match on the basics. After that you'll meet the Hiring Manager or Team Lead. We'll tell you more about Deftpower, and we'd love to get to know you as a person. For some roles you'll work on a short case. Next, you will talk to a teammate so that you can get a good feel for the role and the Deftpower. For IT roles, this is when you receive the offer. For sales and operations roles there's often a third interview to give you an even broader picture of Deftpower.

Do you want to join our team as our new Database Engineer? Then we'd love to hear about you!

Apply now

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About the role

March 25, 2026

Full time

Company

March 25, 2026

Hybrid

EUR 6k–8k monthly

EV Charging Infrastructure

Deftpower

deftpower.com

  •  Arnhem, the Netherlands

5+ years

UTC+01:00