We’re looking for a backend developer who cares about building solid systems and meaningful products people rely on every day.

About Tiimo

Tiimo is an AI-powered daily planner and learning platform built for neurodivergent people.

One in five people think differently, yet most tools weren’t made with them in mind. Tiimo helps bring structure through clear visuals, gentle nudges, and routines that actually fit real brains.

Apple named Tiimo iPhone App of the Year 2025, and we were previously finalists for the Apple Design Award for Inclusivity. More importantly, over 500,000 people use Tiimo to plan their days.

We’re a Copenhagen-based team that cares about doing thoughtful work, shipping useful things, and helping people get through everyday life a little more smoothly.

The role

As Senior Backend Developer, you’ll play a key role in shaping how our platform works behind the scenes.

You’ll take ownership of core backend systems, help evolve our architecture, and make sure our data and integrations stay secure, stable, and scalable.

You’ll work closely with product, design, and frontend in a small, collaborative Tech & Product team.

Hybrid setup, Copenhagen-based.

What you’ll do

• Own and evolve our backend architecture

• Take responsibility for security and data integrity

• Build, deploy, and monitor backend services

• Design and maintain our database structure

• Work on key integrations like Google Calendar and Apple CalDAV

• Collaborate across product and frontend to ship new features

Upcoming focus:

• Scaling backend infrastructure

• Supporting our AI assistant

• Strengthening scheduling and calendar logic

• Improving reliability and observability

You might be a great fit if you

• Care about building products that serve real needs

• Think in systems and sweat the details

• Communicate clearly and work well across disciplines

• Have strong experience with .NET and C#

• Are comfortable with relational databases (we use MS SQL and it's a key part of our platform)

• Prioritize security and maintainability

Nice to have

• Experience with Apple CalDAV or Google Calendar APIs

• Production database design experience

• CI/CD and testing experience

• Startup or scale-up background

• Some frontend familiarity

Stack

• .NET 9 / 10, C#

• MS SQL

• Azure

• Next.js

• SwiftUI

• Strapi

• Webflow

• Tooling includes GitHub, Azure DevOps, Linear, Sentry, Firebase, Mixpanel, Metabase, Slack, Figma, Notion, Codex, Claude Code.

What we offer

• Flexible hours and hybrid work

• Real ownership and impact

• A supportive, thoughtful team

• A product used by hundreds of thousands of people

• You must be eligible to work in the EU.

How to apply

Apply via the one-click form and share your LinkedIn profile. We review applications continuously.