Staff Backend Engineer

LemFi (Series B) is building the go-to financial app for the Global South. Moving to a new country shouldn’t mean starting from zero. That’s why our team of 400+ spanning 20+ countries is building a financial ecosystem that helps immigrants stay connected to home, build stability, and create wealth regardless of where they are from or where they live. What began as fast, affordable remittances is now evolving into a complete platform for multi-currency accounts, payments, credit, and long-term financial growth. With millions of users across the globe, we process over $1B in monthly transactions to 30+ countries, proving that borders shouldn’t limit financial opportunity.

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 prioritise 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 organisational 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 Backend Expertise: Extensive hands-on experience using Go or Java 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 (optimisation 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.

Why Join LemFi?

Love shouldn’t be expensive, yet those working hardest for their families often face predatory fees and banking exclusion. We’re changing this. At LemFi, you won’t be just a cog in a machine. Whether designing products, scaling operations, or telling our story, you’ll tackle complex challenges with real, immediate impact. Your work goes beyond metrics - it puts money back in families’ pockets and offers access to the previously excluded. Join us to make a meaningful difference, where high performance is a lifeline for millions.

Our Values: How We Win

• Sharp Customer Focus: We cut through the noise and prioritise ruthlessly based on what drives real value.
• Lead with Data: We trade instinct for insight. We test, analyse, and own the outcomes.
• Ownership: We take responsibility for global outcomes, not just local wins.
• Grit: We navigate ambiguity with resilience and keep pushing until the customer feels the impact.

Diversity & Inclusion at LemFi

To build the best financial tools for the global diaspora, we need a team that reflects the world we serve. We welcome builders from all walks of life who embody our values over a perfect resume. Don’t meet every single requirement in the job ad? Research shows that candidates from underrepresented backgrounds often hesitate to apply if they don’t check every box. If you are excited about this role and our mission, we encourage you to apply anyway. You might be just the right person for this, or other roles.