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Senior Backend Engineer

Posted Oct 16, 2026

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APPINIO GmbH

Hamburg

EnglishSeniorNo German needed

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Salary in the ad

€41,000 to €65,000

Job Fit

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About this job

Introduction

Allow us to introduce ourselves

Hello there! We’re Appinio, a global market research company that combines an AI-powered insights platform with expert consultancy. On a mission to make the world a little more fact-based, we help companies understand how consumers think and make smarter decisions.

We started out in Hamburg back in 2014, but we’re now humbled to call the world our playground, with over 260 employees spread across 13 countries (we’re remote-first), 2600+ international clients, delivering research from +190 markets, globally.

Want to be a part of the Appinio movement?

Here at Appinio, we value transparencyin our recruitment process , and we've created a blog to share what to expect during each step of our journey together: here

We are looking for a passionate ( Senior)Backend Engineer (m/f/d) to join our amazing backend team.

Your tasks

Your mission as a Senior Backend Engineer

In this role, you will be responsible for developing new features and enhancing our existing code base using NodeJs, Express, and MongoDB.

What you’ll be doing

Design and maintain server-side applications and database architecture.
Collaborate with front-end developers for a seamless user experience.
Regularly review and improve code and system efficiency.
Develop and deploy reusable, testable code and automated tests

You will thrive in this role if

You have at least 3 years of hands-on experience with Node.js, along with strong proficiency in TypeScript and Express.
You have practical experience working with NoSQL databases, preferably MongoDB.
You have a solid understanding of object-oriented programming principles.

You hold a degree in Computer Science or a related field – or have completed a comparable vocational training

Having AWS (S3, ECS, EC2), Docker and Terraform experience is a plus

Having previous experience with NestJS is a plus

You are a proactive problem solver, always seeking innovative solutions and continuously improving processes.

You are willing and able to get familiar with new systems.

You are a team player and enjoy collaborating with cross-functional teams.

You thrive in a collaborative environment, valuing team input and ensuring alignment with project goals.

We work in small, agile product teams with lots of ownership and fast decision-making.

You’ll collaborate with smart, driven, and genuinely nice people.

We keep meetings to a minimum – focus time matters.

We use a modern tech stack that supports us in building great products:

Backend: Node.js (TypeScript), Express, MongoDB, AWS, Docker, Terraform

Frontend: Angular, Flutter

Tools we love: GitHub, ClickUp, Slack

What’s in it for you?

Flexibility Policy - Average is 30 days taken, however, we do not have a hard cap of number of vacation days as we know life happens
Temporary work from abroad - If you're based in the EU, you can work outside your country of residence for up to 180 days per year
All the hardware you need and your own MacBook
If you are located in Hamburg or Berlin, you'll get a Deutschland ticket or access to a mobility budget with the NAVIT app to get you to and from the office space
Subsidised Urban Sports Club or ClassPass membership based on location
In case you’re located in one of the cities where most of our fellow Appinioneers are (Hamburg, Berlin, Munich, London, Madrid, Barcelona, or New York), you can get access to our -working spaces

Additional role details

This is a fully remote position open to candidates based in Germany, the UK, Portugal, the Netherlands, and Spain
This role will report directly
-

is submitted in English.

This post not only outlines our ideal candidate but also serves as an inspiration for what this role can evolve into. Even if you consider yourself an 80% fit but have a genuine passion for this position, we encourage you to apply. We're eager to hear from individuals who share our enthusiasm.

Appinio is an equal-opportunity employer. All applicants will be considered for employment without attention to race, colour, religion, sex, sexual orientation, gender identity, national origin, veteran, or disability status.

Please read our privacy policy here.

Our interview process

Screening Call with a Talent Acquisition Partner
Technical Interview with our Engineering Team
Case Study Interview with our Engineering Leadership Team
Executive Interview with
Reference Calls
Offer

Kind reminder: Please ensure that your

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Job facts

Employer: APPINIO GmbH
Role: Senior Backend Engineer
City: Hamburg
Work mode: not stated
Language: English
Seniority: Senior
Posted: Oct 16, 2026
Source: StepStone

Company rating

Glassdoor 3.8
72 reviews
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Kununu 4.2
83 reviews
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Source: Statistisches Bundesamt (Destatis), table; dl-de/by-2-0; StarIn's calculation