Junior Software Engineer

About L2BEAT

L2BEAT is an open-source platform that tracks and analyses the Ethereum scaling ecosystem (Layer 2s and related infrastructure). We publish data, dashboards, and risk assessments to help users understand how these systems work and make better-informed decisions. What sets us apart is our commitment to accuracy and neutrality - we aim to be an impartial, independent watchdog that stays credibly neutral and grounded in facts.

The role

We’re looking for a Junior Software Engineer to help us build and improve l2beat.com (and the services behind it).

This is a product where requirements evolve often, so curiosity, ownership, and learning quickly are more important than having everything memorized on day one.

What you’ll do

• Build and ship new functionality on l2beat.com

• Maintain and improve existing features (performance, reliability, UX, refactors)

• Build features end-to-end using TypeScript/React on the frontend and Node.js/PostgreSQL on the backend

• Translate complex data into clear product features (you’ll work with blockchain-related concepts and datasets - don’t worry, we’ll help you ramp up)

• Collaborate in a fully remote team

• Take part in code reviews to keep quality high

  
  

What we’re looking for

• You’re based in Europe and can collaborate reasonably within CET/CEST

• Fluent English (spoken + written)

• Strong willingness to learn, ask questions, and take ownership

• You’re not afraid of:

  • unfamiliar codebases

  • debugging real production issues

  • making changes carefully in a system that keeps evolving

    
    

Tech expectations

• Comfortable working with TypeScript (or very motivated to become great at it)

• Some experience with React and modern web development

• Familiarity with backend basics in Node.js and willingness to go deeper

• Pragmatism: sometimes the best solution is not adding another dependency

Blockchain knowledge is NOT required. If you’re eager to learn, we’ll teach you what you need.

Our tech stack

• TypeScript

• Node.js

• PostgreSQL

• React

• Lots of in-house tooling around gathering and analysing blockchain data

  
  

We offer

• Salary: 12000–15000 PLN / month

• Paid time off

• Elastic working hours

• Fully remote work (we can sponsor a coworking desk)

• Work on open-source projects

• Regular knowledge sharing meetings

• Travel, conferences, off-sites, and integration events