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Senior Backend Engineer


We are a passionate team on a mission to enable a fairer, more decentralised world. To do so, we are building a crucial piece of cross-chain infrastructure to enable multiple blockchains to co-exist and serve different needs. Apart from the tech, we care a lot about user experience and aim to make complex technologies accessible to everyone.

A quick run-down of the job

We are looking for a Senior Backend Engineer who will lead the design, development, and maintenance of our backend systems, ensuring they are robust, scalable, and secure. You'll collaborate closely with cross-functional teams, including frontend developers, product managers, and designers, to deliver high-quality software solutions that drive our success. The position will report to our Backend Lead.

The current tech stack of LI.FI utilizes:

  • Node.js running TypeScript code in Docker containers

  • MongoDB and Redis for our data

  • ethers.js for communication with the blockchains

  • Github, Kubernetes, AWS and CloudFlare for our GitOps CD chain

Please note: You must be located in the EMEA region and have deep technical understanding of blockchain. Your application will not be considered otherwise.

What you'll do

  • 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

What makes a good candidate

  • 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 must

  • 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

  • Strong communication, collaboration, problem-solving and analytical skills

  • Proactivity, strong ability to work well within a team and to be self-guided on a day-to-day basis

  • Ability to write maintainable, scalable, production-grade code

  • Passion for new technologies and ability to autonomously evaluate them and make suggestions for improvement

  • 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

We encourage you to apply if you feel your experience and skills equip you for this job but are not listed here!

Company culture

  • Empowered teams: We take the best person with the right skills, and then inspire them to use them! We trust our team and give them the space and ownership to excel and achieve.

  • Flexible time management: We believe work should adapt to your life, not the other way around. We only schedule a few fixed meetings every week – you're free to arrange the rest of your time as you like.

  • Inclusive culture: It’s our priority to make our whole team feel included, appreciated and respected. Our global, culturally diverse team is our most important asset.

  • Remote-friendly: We’re a fully remote, global company. As long as you’re not on Mars (the WiFi is terrible we heard), being part of our team from the comfort of your own home works perfectly well for us.

What you’ll get

  • Entitlement to a work computer (choice of equipment).

  • Unlimited remote days and flexible working hours.

  • Annual team off-sites (Thailand was a blast last year & Vietnam will be even blast-ier).

  • An annual 1000€ personal development budget once you have worked 6+ months (pro-rated the first year).

  • A one-time 1000€ remote budget to use on co-working, office setup, etc.

  • Equity participation from day one.

*Please note that these benefits are applicable only to employees and may not extend to freelancers or contractors. Only points 2,3 and 6 do apply.

Application process

Li.Fi is an equal opportunity employer. We encourage individuals of all backgrounds to apply. Join us in our dedication to fostering a workplace that values and respects each team member's unique contributions.To apply, submit your resume and a cover letter detailing your relevant experiences and competencies. Shortlisted candidates will undergo a comprehensive interview process, including a video challenge, people operations interview, take-home assignment, meet the team & founder interview, and reference check.For more information, visit our page detailing our hiring process! If you have a question you can’t find the answer to, please feel free to reach out to career@li.finance.

We look forward to welcoming a candidate who embodies our values of ownership, collaboration, and continuous improvement.

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