Senior Platform Engineer

LemFi
Charing Cross, United Kingdom
7 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

Amazon Web Services (AWS)
Amazon Web Services (AWS)
Cloud Computing
Cloud Computing Security
Disaster Recovery
Distributed Systems
Github
Identity and Access Management
Key Management
PCI Data Security Standards
RabbitMQ
Data Logging
Cloud Platform System
Amazon Web Services (AWS)
Cloudformation
Amazon Web Services (AWS)
Kafka
Terraform
New Relic (SaaS)
Docker

Job description

You will be a Senior Platform Engineer at LemFi, responsible for designing, building, and evolving the cloud infrastructure that powers global money movement at scale.

Your mission is to create a secure, scalable, and cost-efficient AWS cloud platform that enables engineers to ship faster while meeting the operational and regulatory standards of a global fintech provider.

You won't just maintain infrastructure - you'll build a self-service internal cloud platform that improves reliability, strengthens security, and ensures our systems remain resilient as we process billions in transactions worldwide.

How You'll Contribute

  • Design and scale AWS infrastructure with a focus on reliability, security, and cost-efficiency
  • Build and maintain Infrastructure as Code (Terraform / CloudFormation) ensuring changes are auditable and reproducible
  • Improve observability (monitoring, logging, alerting, tracing) and strengthen SLO-driven reliability
  • Enhance CI/CD pipelines and contribute to our Internal Developer Platform
  • Support incident response, disaster recovery, and compliance (GDPR, PCI DSS, SOC2, DORA, ISO27001)

Requirements

Do you have experience in Terraform?, * Ownership-driven - you take initiatives from design through production

  • Reliability-focused, with strong SRE principles
  • Security-conscious, understanding encryption, IAM, and compliance needs
  • Collaborative communicator who partners well across Engineering & Security

What You'll Bring

  • Strong experience with AWS (ECS, RDS, S3, ElastiCache, Networking)
  • Hands-on expertise in Terraform and/or CloudFormation (IaC)
  • Experience with Docker and containerised workloads
  • Solid understanding of cloud security, IAM, encryption & key management
  • Experience building and maintaining CI/CD pipelines (GitHub Actions, ArgoCD)
  • Familiarity with observability tools (e.g., New Relic)
  • Exposure to event-driven systems (Kafka, RabbitMQ) and distributed architectures

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., 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 prioritize ruthlessly based on what drives real value. * Lead with Data We trade instinct for insight. We test, analyze, 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.

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