Currency

Senior Software Engineer / Tech Lead

9 086 - 10 188 USDNet per month - B2B
Architecture

Senior Software Engineer / Tech Lead

Architecture

Poznańska 16, Warszawa

L2BEAT

Full-time
B2B
Senior
Remote
9 086 - 10 188 USD
Net per month - B2B

Tech stack

    English

    C1

    TypeScript

    master

    Node.js

    master

    PostgreSQL

    advanced

    React

    advanced

Job description

L2BEAT is a public goods company dedicated to providing onchain transparency.

What sets us apart is our commitment to delivering accurate and reliable information. We are an impartial and independent watchdog that delivers data and tools for our community to educate themselves, transact securely, and make well-informed decisions.

We’re looking for a person to lead a small team of engineers and develop new functionalities and solutions that will further our mission.

Key Responsibilities

  • Adding new functionality to l2beat.com (some frontend work, but mainly analysing and processing blockchain data on the backend) and leading a small team of engineers.

  • Implementing integrations with various blockchain systems (APIs, explorers, L2s, bridges, tokens, etc.)

  • Ensuring smooth operations of our deployments

Technical requirements

  • Excellent problem solving skills

  • Practical understanding of system design beyond CRUD applications

    • Components (client apps, backend services, etc)

    • Data modeling

    • Infrastructure (different models: docker, bare metal, server-less, cloud)

    • Data storage (file, RDS, NoSQL, redis etc.)

    • Logging and monitoring (incl. distributed systems)

  • TypeScript/Node.js proficiency mainly in backend but also on the frontend side

  • Experience with database schema design and query optimisation

  • Monitoring and observability experience

  • A Comp-Sci degree or a degree in a related field

  • Minimum of 5 years of professional experience

  • The solution to every problem is not another JS library

  • Experience with the EVM and smart contracts will be an additional asset

Non-technical qualities

  • Proficiency with the English language both in spoken and written form

  • Open-mindedness; L2BEAT’s setup is quite unusual and we rely a lot on technologies developed in house

  • Focus on the bigger picture and critical thinking when tackling abstract problems

  • Mentoring skills to foster young talents

  • Proactivity and willingness to ask questions

  • You are based in Europe and work in the CET/CEST time zone

Our technology stack

  • Typescript

  • Node.js

  • PostgreSQL

  • React

  • A lot of in house tooling built around gathering and analysing blockchain data

We Offer

  • Competitive salary

  • Paid time off

  • Opportunity to work alongside experienced Ethereum engineers

  • Work on open-source projects

  • Regular knowledge sharing meetings

  • Elastic working hours

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

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

Join us!

To apply please send your CV via JustJoin or to work@l2beat.com. We’ll reach out to discuss the opportunities available at L2BEAT.

Published: 25.09.2025
Office location

Senior Software Engineer / Tech Lead

9 086 - 10 188 USDNet per month - B2B
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Senior Software Engineer / Tech Lead

Poznańska 16, Warszawa

L2BEAT

9 086 - 10 188 USDNet per month - B2B
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