Staff Backend Engineer at LemFi (Formerly Lemonade Finance)

Lemonade Finance (YC S21) is building a neobank for immigrants in North America & Europe. We provide our users with multi-currency accounts that allow them to hold, send, and receive money from Africa in any currency for their business and personal banking needs. There are over 10 million Africans living in North America & Europe who go through hoops and have to pay exorbitant fees to send money to their loved ones. We are constantly fighting for everyday Africans to be able to move their money freely around the world at no cost and with the best exchange rate they can find out there. We launched the first version of the app at the beginning of October 2020 with just the ability to send money. Now, we enable our users to send and receive as well as pay bills for services across the ocean for loved ones. We have also grown to a team of more than 25 people working remotely and living on different continents

The Role

• You will be the technical engine behind LemFi’s Remittance Platform, a system that processes tens of millions of cross-border transactions every month. As a Staff Engineer, you aren’t just writing code; you are driving the architectural strategy that allows immigrants around the world to send money home safely and efficiently. You will tackle the most complex system challenges end-to-end, setting the benchmark for technical quality across the entire engineering organisation.

How You'll Contribute

• Drive Technical Strategy: Guide architectural decisions from concept to production across multiple teams, ensuring our systems are scalable and well-informed.
• Establish Excellence: Set and uphold benchmarks for design, implementation, testing, reliability, and scalability across the organisation.
• Own Critical Components: Take hands-on ownership of high-stakes system components to set a gold standard for the team by example.
• Mentor and Amplify: Provide technical guidance to engineers and leads, removing blockers and bringing clarity to ambiguous challenges through strong communication.
• Collaborate Strategically: Partner with Product, Data, and Growth stakeholders to align our technical roadmap with broader company priorities.
• Evolve Standards: Shape company-wide engineering standards, continuously improving tooling and processes for long-term impact.

Who You Are

• Impact-Driven: You prioritize meaningful business and user outcomes over technical output alone.
• Influential Without Authority: You lead through mentorship and example, aligning stakeholders across teams without relying on an organizational chart.
• A Pragmatic Builder: You enjoy getting deep into the stack to understand trade-offs and deliver solutions that move the needle.
• AI-Native Mindset: You are actively exploring how AI can enhance engineering productivity and unlock new ways to solve problems.
• Growth-Oriented: You are naturally curious and eager to learn areas beyond your core expertise, from machine learning to emerging technologies.

What You'll Bring

• 7+ years of experience building scalable, production-grade distributed systems.
• Deep Go Lang Expertise: Extensive hands-on experience using Go for building distributed services.
• System Design Mastery: Proven track record in Domain-Driven Design (DDD), modular architecture, and evolving RESTful APIs.
• Advanced Infrastructure Knowledge: Proficiency with PostgreSQL (optimization and transaction handling), Redis, and async patterns like Kafka.
• Cloud & DevOps Savvy: Ability to translate requirements into secure, cost-efficient AWS architectures using Docker and shift-left automation.
• Observability Focus: Deep experience in establishing logging, metrics, and distributed tracing standards.
• Bonus: A degree in Computer Science or previous experience in the FinTech/Banking domain.

Method of Application