Backend Engineer

We’re looking for a Backend Engineer who loves writing clean, reliable code, but is equally excited about building products for real people. This is a product engineering role, not a ticket factory. You’ll help shape what we build, why we build it, and how it lands with customers.You’ll work closely with frontend engineers, product, growth, and the founders to build the systems that power Tap.

The role

As a Backend Engineer, you will:

Build and evolve backend services that power our mobile app and web platforms

Work primarily in

C# using .NET Core

on Azure

Collaborate closely with frontend (Flutter) engineers to ship complete, end-to-end features

Take part in

product discovery , understanding user problems, shaping solutions, and validating outcomes

Speak directly with customers and internal stakeholders to understand real-world needs and constraints

Contribute to

CI/CD

pipelines, automated testing, and high engineering standards

Use modern tooling, including AI-assisted development, to move faster without compromising quality

Continuously improve our backend architecture as we scale across markets

Important : this role involves direct contact with customers. If you prefer to stay entirely behind tickets and specs, this role is probably not a good fit.

About you

You enjoy backend engineering, but you’re motivated by

impact , not just implementation

You think like a

product engineer

and care about the user, the business, and the system as a whole

You’re curious about the market and want to understand the domain you’re building in

You’re comfortable talking to

customers

and using those insights to influence technical decisions

You work well independently but actively collaborate with others

You’re pragmatic, opinionated, and open to changing your mind when presented with better ideas

You thrive in startup environments where ambiguity is normal and ownership is expected

What you'll need

Experience as a backend engineer where you’ve owned meaningful parts of a system

Strong experience with

C# and .NET Core

Experience building and maintaining APIs in productionFamiliarity with

testing practices

and CI/CD pipelines

Hands-on experience, and genuine enthusiasm, for

AI-assisted development tools

such as Antigravity, Claude Code or similar tools.

Solid understanding of Git and collaborative development workflows

We care less about a specific number of years experience, and more about how you think, what you’ve built, and the level of ownership you take.

Nice to haves

Experience with

Azure services

such as App Services, Functions, messaging, and storage

Exposure to distributed or event-driven systems

Experience working in

product-led teams

or startups

Interest in energy and mobility

What we offer

The chance to get in early at a mission-driven startup with a very cool product

Competitive salary and equity package

Office in central Amsterdam, on the iconic Singel canal in the 9 Streets

Super flexible working environment with trust and autonomy

New hardware with your choice of operating system

A team that genuinely enjoys working together

Coffee matters. We only buy the best

A bit more about Tap

Tap was founded in late 2020 by two charging software veterans, Nico and Dan, who saw that the charging UX for EV drivers was broken. They bootstrapped their way to building 2 key products: a driver app that enables really simple payments on a huge network of chargers; and a platform for charger owners and installers to manage their chargers and collect payments. Tap is live in the Netherlands, Belgium, Ireland and the UK with tens of thousands of satisfied users (our 4+ App store ratings prove it). At Tap, we believe that the intersection of energy and mobility has unlocked the next great wave of technological innovation, and we are here for it. Join us!

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