Staff Backend Engineer

LemFi
Charing Cross, United Kingdom
20 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Senior

Job location

Charing Cross, United Kingdom

Tech stack

Java
Artificial Intelligence
Amazon Web Services (AWS)
Cloud Computing
DevOps
Distributed Systems
PostgreSQL
Machine Learning
Redis
Data Logging
Backend
Information Technology
Kafka
REST
Docker

Job description

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

Requirements

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 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 (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. 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

About the company

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

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