Cloud Security Engineer

About Hands In

Hands In is a London-based fintech pioneer building the payment infrastructure that helps global airlines and travel companies rescue millions in lost revenue. Our platform enables customers to split high-ticket purchases seamlessly across multiple cards, payment methods, and people right at checkout.

Backed by over £1M in funding and partnered with massive global travel ecosystems we are scaling rapidly. We are now looking for an ambitious, security-minded engineer who wants to wear two hats: writing clean product features in TypeScript and taking core ownership of our cloud security and infrastructure foundations.

• Location: Fully Remote (UK Working Hours)
• Salary: £30,000 - £40,000 per year
• Stack: TypeScript, NestJS, Next.js/React, AWS (SST/CDK), PostgreSQL, DynamoDB

The Opportunity

This is a high-growth, high-impact hybrid role. If you are a Fullstack Engineer who is tired of working in an isolated silo where you "just write components," and you want to truly master how enterprise-grade, PCI-compliant infrastructure is architected and secured on AWS, this is your launchpad.

You will work directly on high-volume financial transaction networks, learning how to bridge the gap between application logic, high-performance dashboards, and strict network isolation.

What You'll Do (Responsibilities)

• Product & Dashboard Engineering: Build lightning-fast merchant dashboards and real-time analytics platforms capable of fetching, caching, and rendering thousands of high-velocity transactions seamlessly using TypeScript.
• Network & Cloud Security: Architect and maintain secure, public-isolated AWS environments using VPCs, subnets, and strict security groups to guarantee our production and database layers are completely locked down.
• Scale Webhook Architecture: Design event-driven, high-availability ingestion systems using AWS serverless patterns to absorb massive transaction spikes and securely process asynchronous webhooks (handling out-of-order execution cleanly).
• Payment Page Integrity: Implement client-side script monitoring frameworks (utilizing tools like SRI and strict CSP protocols) to preserve the cryptographic integrity of checkout flows and prevent frontend tampering.
• PCI DSS Compliance Ownership: Learn and implement top-tier compliance strategies (like advanced tokenization) to completely isolate cardholder data from our primary application servers, keeping our core audit scope highly efficient.

What You Need (Requirements)

• TypeScript Fluency: Strong backend capabilities with Node.js/NestJS and solid frontend skills (React/Next.js). You think naturally in TypeScript types.
• AWS & Infrastructure Curiosity: Production exposure or strong hobbyist familiarity with core AWS services (VPCs, SQS, DynamoDB, Lambda, IAM) and a strong desire to master Infrastructure as Code (SST/CDK).
• Security-First Paradigm: You don't view compliance or security as a boring checklist, you view it as a core marker of code quality.
• Extreme Attention to Detail: Absolute precision in following engineering documentation, layout specifications, and execution instructions.

Browse our curated collection of remote jobs across all categories and industries, featuring positions from top companies worldwide.

Tech Environment

• Languages & Frameworks: TypeScript, NestJS, React, Node.js
• Data Layer: PostgreSQL, DynamoDB, MongoDB
• Cloud Infrastructure: AWS (managed via SST / CDK TypeScript infrastructure code)

How to Apply (Read Carefully)

To build financial transaction networks, exceptional attention to detail is a non-negotiable trait. Because of this, we do not accept or review 1-click LinkedIn applications, emailed CVs, or direct messages. To be considered for this role, you must apply by filling out our initial technical screening form here:

👉 https://forms.gle/c7GZobJWC16JJD5CA

CRITICAL: Applications submitted via any method apart from the Google Form link above will be immediately archived and will not be considered.