Skip to content
CV Rocket
Get started
How it worksThe enginePricingBlogContactSign in

Open nowPosted 58 days ago

Senior Backend Engineer (m/f/d)

Appinio15 open roles

Where
Madrid, Madrid, Spain
Get the CV for this job

From $25 per CV, paid once. No subscription.

Your applicationOpen nowSenior Backend Engineer (m/f/d)Appinio · Madrid, Madrid, Spain

  1. YouYes, apply to this one.

  2. CV RocketCV written for this posting.

  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

  4. CV RocketApplied on Appinio's own form.

The reply lands in your private mailbox

3×more interviews than doing it yourself with ChatGPT.

The clock on this job

Early applications get read.

8.1% of postings close within 7 days. Measured by our own scanner across the market. Appinio postings stay open a median of 3 days.

Share of postings closed within
  1. 1.7%1 day
  2. 3.6%3 days
  3. 8.1%7 days
  4. 15.1%14 days
  5. 34.0%30 days
This job: posted 58 days ago

Appinio median: 3 days open

The posting

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 transparency in our recruitment process, and we've created a blog to share what to expect during each step of our journey together: here

Your mission as a Senior Backend Engineer

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

How we work

  • 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 Co-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 to our Head of Infrastructure

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 C-Level
  • Reference Calls
  • Offer

Kind reminder: Please ensure that your application 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.

Learn more about us:

appinio.com LinkedIn Xing Kununu Instagram

From $25, paid onceGet the CV for this job

What happens when you press

One press. We do the rest.

  1. A CV for this posting

    Written against Appinio's own wording, from every piece of relevant proof in your profile.

  2. 25 readers review it

    Recruiter, hiring manager, skeptic and more read every draft, round after round. You get the best round.

    The review screen in CV Rocket: how each CV was read, round by round.

  3. We apply on Appinio's form

    Our application engine gets through the hardest forms there are. Where a question needs you, AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

    An application in CV Rocket: every answer filled in on the employer's form.

  4. Every reply, sorted

    Appinio's answer lands in your private mailbox, and we classify it on arrival: interview, question, rejection.

    The CV Rocket inbox: each employer reply classified as an interview, an action or a rejection.

  5. Reply with AI

    AI helps you write the email, checks it and sends it. We show you whether the recruiter read it.

  6. The interview in your calendar

    Full integration with your calendar. The invitation goes straight in.

    An interview invitation in the CV Rocket inbox, added to the candidate's calendar.
Get the CV for this job

From $25 per CV, paid once. No subscription.

Why it works

3×

more interviews than doing it yourself with ChatGPT.

ChatGPT writes a CV and never learns what happened to it. We see every reply. For each CV we know:

  • How it was written, and how the review scored it
  • When we applied, and how long after the posting went up
  • Which posting, which company, which city
  • Who got the interview, and who heard nothing

That is how we know which CVs get called.

Get the CV for this job

From $25 per CV, paid once. No subscription.

The numbers game

More applications. More interviews.

Every application goes out with its own CV, written for that posting and paid once. Send enough of them and the law of large numbers finds you the job.

Get the CV for this job
By hand5–10
With CV Rocket100
applications a day

Nearby

Live postings like this one

Same employer first, then the same role elsewhere.

Before you press

Straight answers

Get the CV for this job

From $25 per CV, paid once. No subscription.

What if my background isn't good enough?

We make the most of the background you have. The CV uses every piece of relevant proof your profile holds, and one of the 25 readers reads your whole profile and flags what the CV left out.

Do you really apply for me?

Yes, on the employer's own form, the hardest ones included. Where a question needs you, you answer it right there and AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

Is it a subscription?

No. You pay once per CV, from $25. Every application goes out with its own CV, written for that posting.

One job. One CV.
Paid once.

Pick the posting you want. We write for it, apply for you and catch the reply.

Get the CV for this job

From $25 per CV, paid once. No subscription.