Lemon.io

Senior back-end Engineer

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

Senior Developer? Work Remote. Get Paid Well. Build What Matters.

 

Lemon.io connects hand-picked senior developers with vetted startups across the US and Europe — no bidding wars, no ghosting, just serious opportunities.

We're currently hiring for a research-driven AI company on a mission to slash the cost of modern AI — co-designing hardware, software, algorithms, and models to make AI's benefits accessible to everyone. They're active open-source contributors, building the infrastructure behind next-generation AI at scale.

 

Open roles: Senior Back-end Engineer (Golang), Senior DevOps Engineer, Senior Site Reliability Engineer, Senior Storage Engineer, Senior Python & LLM Developer, Senior Back-end Engineer (Python)

 

Why this one's worth a look:

You'll be working on infrastructure that directly shapes how AI gets built and deployed, at a company operating at the frontier of the field.

Locations: EU, US, Canada, UK, Australia, Singapore, Ireland, Norway, Switzerland, Iceland, and Mexico.

 

Requirements for Senior Back-end Developers:

5+ years of software development experience

3+ years of experience with Golang and/or Python

2+ years of experience with Kubernetes

2+ years of experience with AI agent development

 

Not your stack?

We're placing Senior Developers (4+ yrs commercial experience) across AI Agent Architecture, AI Automation Architecture, AI Engineering, Site Reliability Engineering, Platform 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 & Angular, 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, Data Annotation, Angular, Python & Node, React & Node.js, 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 work with developers across 75+ countries in Europe, Latin America, North America, select Asian markets (Japan, Singapore, South Korea, Philippines, Indonesia, Malaysia, Vietnam, Thailand, Israel), Oceania (Australia, New Zealand, Papua New Guinea), and Africa (including Morocco, 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 Engineer 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 Engineer 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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