Senior Backend Engineer

LI.FI

Senior Backend Engineer leading design and development of backend systems for blockchain technologies at LI.FI. Collaborating with cross-functional teams to deliver high-quality software solutions.

Posted 5/11/2026full-timeRemote • 🇩🇪 GermanySenior💰 €90,000 - €130,000 per yearWebsite

Tech Stack

Tools & technologies

GoTypeScript

About the role

Key responsibilities & impact

Leading and actively participating in the design, development, and maintenance of backend systems and APIs
Architecting and implementing scalable and robust backend solutions that can handle growing user loads and evolving business needs
Maintaining high coding standards, conduct code reviews, and ensuring best practices for code maintainability and readability
Identifying bottlenecks and optimizing code and algorithms to improve system performance
Implementing monitoring and debugging tools to proactively identify and resolve issues, ensuring high system availability
Developing and maintaining comprehensive test suites, including unit tests, integration tests, and end-to-end tests, to ensure the reliability of backend systems
Providing guidance and mentorship to junior developers, helping them grow their technical skills
Analyzing complex technical problems and propose effective solutions to address them
Documenting code, APIs, and technical processes to facilitate knowledge sharing within the team and support onboarding of new developers

Requirements

What you’ll need

Must be located in the EMEA region
Strong TypeScript experience is a must
Previous working experience in the blockchain space, technical understanding of the EVM ecosystem (or other ecosystems) is a nice to have.
Extensive professional experience in a similar role (as senior or lead)
Understanding of document databases and caching
Experience in software design and architecture
Deep knowledge of testing frameworks and principles
Very strong verbal and writing skills in English to allow effective communication with team members and stakeholders in meetings and documents
Bachelor's or Master's degree in Computer Science is a plus
Experience with smart contract development is a plus
Proficiency in Golang is a plus.

Benefits

Comp & perks

Annual team offsites (Thailand in 2023, Vietnam in 2024, Marrakech in 2025, Crete in 2026; memories we'll never forget. Already dreaming about where 2027 will take us!)
30 days of PTO
Flexible remote days
Flexible working hours
Equity participation from day 1
Entitlement to work computer (choice of equipment)
An annual 1,000€ personal development budget once you have worked 6+ months (pro-rated the first year)
A one-time 1,000€ remote budget to use on coworking, office setup, etc.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

TypeScriptGolangbackend systemsAPIssoftware designarchitecturedocument databasescachingtesting frameworkssmart contract development

Soft Skills

mentorshipcommunicationproblem-solvingcode reviewstechnical guidancedocumentationteam collaborationanalytical skillscode maintainabilityperformance optimization

Certifications

Bachelor's degree in Computer ScienceMaster's degree in Computer Science