LI.FI is simplifying multi-chain DeFi for traditional financial institutions, fintechs and service providers by offering a unified API to access all on-chain liquidity across major blockchains for best price same-chain and cross-chain swaps. We are a passionate team on a mission to enable a fairer, more decentralised world. 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 or APAC regions and have 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 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

• 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

• Proficiency in Golang is a plus

Company culture

• Embracing the differences

  • Embrace your own differences

  • Respect and welcome the unique qualities of others

  • See others’ differences as an opportunity to grow

• Own it, do it

  • Own tasks end-to-end

  • Hold yourself to a high bar for execution

  • Make bold decisions, and be accountable

  • Understand your limitations and seek for help

• Fail forward

  • Try - don’t be afraid to fail

  • Learn - don’t make the same mistake twice

  • Adapt - grow with the experience

• Have fu