LI.FI - Senior Backend Engineer

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 multiple Senior Backend Engineers 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

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

Requirements:

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