DeFi Jobs

The posted range represents the typical compensation range for this role. To determine actual compensation we review the market rate of each candidate which can include a variety of factors including qualifications, experience, and location. Additional benefits are shared as part of the job posting.

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’re looking for a Senior Backend Engineer to join our backend organization and strengthen the team building our partner backoffice software, with an added emphasis on crypto literacy and blockchain-aware system design. This role is aimed at a senior individual contributor who is comfortable operating in crypto products as a user and can translate that understanding into robust backend and API decisions.
This role sits within a cross-functional team made up of a Product Owner, frontend engineers, and backend engineers, jointly responsible for building and maintaining our partner backoffice software.

Location requirement: You must be located in the EMEA region. Applications outside EMEA will not be considered.

Tech Stack

• Node.js with TypeScript, running in Docker containers

• MongoDB and Redis

• ethers.js for blockchain communication

• GitHub, Kubernetes, AWS, Cloudflare for our GitOps CD pipeline

What you’ll do

• Design, develop, and maintain backend systems and APIs, with a strong emphasis on clean, consistent, and evolvable API design

• Build backend functionality that interacts with crypto-native concepts and workflows, informed by hands-on experience as a crypto user

• Collaborate closely with frontend engineers and product to translate crypto-related requirements into intuitive, reliable backend interfaces

• Contribute to the architecture of scalable and robust backend solutions that support partner-facing and internal use cases

• Maintain high engineering standards through code reviews, strong abstractions, and clear, readable code

• Identify performance and reliability bottlenecks and improve system behavior, data access patterns, and caching strategies

• Implement and maintain monitoring, logging, and debugging tooling to ensure high system availability

• Build and maintain comprehensive automated test suites across backend services

• Act as a senior technical contributor within the team, supporting design discussions and raising the overall technical bar

• Document APIs, system behavior, and technical decisions for long-term maintainability

What makes a good candidate

• Must be located in the EMEA region

• Strong professional experience with TypeScript and Node.js

• Extensive experience working as a senior backend engineer on production systems

• Proven ability to design and maintain high-quality APIs

• Practical familiarity with crypto products and ecosystems as a user (wallets, swaps, bridges, DeFi, etc.)

• Development experience in blockchain or Web3 systems is a plus, but not required

• Solid understanding of document databases and caching systems (e.g. MongoDB, Redis)

• Experience with backend architecture and system design in distributed environments

• Deep knowledge of testing principles and backend testing frameworks

• Strong communication and collaboration skills in cross-functional teams

• Proactive, self-directed, and comfortable taking ownership of backend domains

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

• Very strong written and spoken English

• Bachelor’s or Master’s degree in Computer Science 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 fun together

  • Take the time to get to know and understand each other better

  • Don’t take yourself too seriously and keep it light-hearted

  • Fun should be coming from a place of love and respect

What you’ll get

• Annual team offsites (Thailand in 2023 and Vietnam in 2024 were a blast, Marrakech in March 2025 was blast-ier; let’s see what happens in 2026!)

• 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.

If you join us as an independent contractor, you’re only entitled to the first five benefits of this list.

Application process

Setting yourself up for success starts with the application! Click here to discover valuable tips that will help you navigate our application process effectively.

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.

Shortlisted candidates will undergo a comprehensive interview process, including a people operations interview, a take-home assignment, a meet-the-team & founder interview, and a reference check.

For more information, visit our page detailing our hiring process!

Compensation Range: €80K - €130K