Lemon.io

Senior Back-end Developer

Europe full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

Lemon.io helps companies in the US and Europe hire experienced engineers, from funded startups to teams like Klarna, Retool, and Pinterest. We’ve been doing this since 2015, and more than 1,500 companies have hired engineers through us.

 

Currently, we have a few open positions from our client, an AI-native cloud company. AI teams use its platform to run inference on open-source models, fine-tune them and rent large GPU clusters. The fleet is set to grow about 10×; the team won't. That's where you come in.

 

Who they’re looking for: Site Reliability Engineer, Senior Back-end Developer with Golang, Senior Back-end Developer with Python, AI Infrastructure Engineer, Distributed Storage Engineer, DevOps.

 

Requirements for Senior Back-end Developers with Golang

5+ years of commercial experience with Golang

2+ years of commercial experience with Kubernetes

1+ year of experience in AI-assisted coding

Experience with distributed systems

 

Requirements for Senior Back-end Developers with Python

5+ years of commercial experience with Python

2+ years of commercial experience with Linux

2+ years of commercial experience with Kubernetes

1+ year of experience in AI-assisted coding

Experience with distributed systems

You own problems end-to-end: you spot the issue, design and build the solution, and ship it to production

You can show the business impact of your work with concrete results (e.g., faster processing, lower costs, more users, fewer incidents)

Advanced English: you discuss business tasks, explain your decisions, raise issues early, and present yourself and your results well on client calls

You work full-time remotely and deliver without supervision

You onboard quickly and start shipping in your first weeks

 

Other job listings you can check using the link. You will be redirected to the career page with offers from the client on our website.

 

How it works

Apply and complete your profile

Verify your role

Once approved, we match you with a project.

 

Ready? Apply!

 

NOT YOUR TECH STACK?

We're placing Senior Developers (4+ yrs commercial experience) across AI Agent Architecture, AI Automation Architecture, AI Engineering, Site Reliability Engineering, Platform Engineering, Enterprise Software Engineering, React & Python, React & Golang, Golang, React & Java, React & Ruby, Ruby, PHP & Vue, Vue & Node.js, React & .NET, Android & iOS, iOS & Swift, Flutter & Firebase, Solutions Engineer, Blockchain (Ethereum/Ethers.js/Wagmi/Viem/Solana), Angular & Node.js, Vue & .NET, Python & Vue, DevOps, MLOps, Data Science, Angular & PHP, Angular & .NET, Symfony & React, Symfony & Vue, Symfony & An gular, Python, Symfony & JavaScript & Next.js & TypeScript, Data Analysis, React & PHP, Data Engineering, Project Management, Product Management, QA Automation, QA Manual, Embedded Software Engineering, React Native & Node, React Native & React, React Native & Ruby, React Native & Python, WordPress, Android, Angular, Python & Node, React & Node.js, Node & TypeScript, Java & Spring, Svelte & Python, Svelte & Node.js, Svelte & TypeScript, Rust, Shopify & JavaScript, Vue & Nuxt, PHP & Laravel, UI/UX Design, Animation, Graphic Design, React & Node & React Native, .NET & C#, Electron, Scala, C++, Unreal Engine & C++, Python & LLM, Unity, or Machine Learning Engineering and more. Reach out and we'll match you.

We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.

 

We work with developers from 75+ countries across Europe, Latin America, North America (the U.S. and Canada), selected countries in Asia (Japan, Singapore, South Korea, the Philippines, Indonesia, Malaysia, Vietnam, Thailand, Saudi Arabia, and Israel), Oceania (Australia, New Zealand, and Papua New Guinea), and Africa (including Morocco and South Africa).

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT Data Analysis Javascript PHP Project Management Python Mid level

Likely questions

  1. Tell us about work you have done that is close to the Senior Back-end Developer role.
  2. How would you approach your first 30 days at Lemon.io?
  3. Which of Data Analysis, Javascript and PHP have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with Data Analysis, Javascript and PHP.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Senior Back-end Developer role because I can bring practical experience in Data Analysis, Javascript and PHP, learn the team quickly, and contribute to the outcomes Lemon.io needs from this hire.

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