Senior Payments Platform Engineer

Key Responsibilities

• Infrastructure Architecture: Design and operate multi-region, highly available AWS-based payments infrastructure with financial-grade resilience (active-active/active-passive failover and RTO/RPO commitments).
• Infrastructure as Code (IaC): Manage the full lifecycle of AWS resources (VPC, EKS/ECS, RDS/Aurora, SQS/SNS, API Gateway) using Terraform, Pulumi, or CDK.
• Network Security: Design and enforce network architecture for regulated environments, including private subnets, PrivateLink integrations for third-party providers (e.g., Plaid, Stripe), and WAF/Shield Advanced configurations.
• CI/CD & Deployment: Build and maintain pipelines supporting high-frequency production deployments, including blue/green releases, automated rollbacks, and SLO-gated deployment controls.
• Security & Compliance: Define secrets management strategies (KMS, HSM integration) and design infrastructure controls to satisfy PCI DSS, SOC 2, and regulatory (FCA) audit requirements.
• Observability: Own the monitoring stack (OpenTelemetry, CloudWatch, OpenSearch) to surface payment failures, latency spikes, and compliance anomalies.
• Data Platform Management: Manage RDS Aurora PostgreSQL and event streaming (MSK/Kafka) for high-stakes transactional and reconciliation workloads.
• Reliability & Disaster Recovery: Build automated runbooks, chaos engineering experiments, and load-test harnesses. Maintain and test multi-region disaster recovery scenarios.
• Mentorship & Cost Engineering: Drive platform cost efficiency and mentor backend engineers on containerization and 12-factor app best practices.

Requirements

• Deep AWS Expertise: Extensive production experience across core compute, networking, storage, and security services.
• Financial Services Background: Proven track record at a neobank (e.g., Monzo, Revolut), PSP (e.g., Stripe, Adyen, Checkout.com), or a major bank’s infrastructure division.
• IaC & Containers: Mastery of Terraform at scale and strong experience with Kubernetes (EKS) or ECS operations.
• Database & Messaging: Experience running RDS/Aurora PostgreSQL for transactional workloads and operating Kafka (MSK) or Kinesis for financial event pipelines.
• Compliance Literacy: Familiarity with the infrastructure obligations of PCI DSS, SOC 2, or FCA/PRA regulated environments.
• Operational Maturity: Experience in 24/7 on-call rotations for financial systems with a focus on incident response and post-mortems.

Preferred Qualifications

• Experience with Solana or EVM blockchain infrastructure, policy-as-code (OPA), or FinOps certifications.
• Proficiency in Rust, Python, or Go for tooling is a significant plus.

Benefits

• Compensation: $250K - $300K
• High Impact: Direct ownership of systems reaching hundreds of thousands of users with immediate production impact.
• Location: This is an in-person role based in London.
• Environment: A high-intensity, low-bureaucracy culture where performance is rewarded with significant autonomy.

Interview Process

• Recruiter / HR Screening Call
• Founder / CEO Interview
• Technical Interview I
• Technical Interview II

Commitment to Equality and Accessibility

At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing .