lendable
lendable1mo ago
New

Application Security Engineer

Londonfull-timemid
EngineeringSecurity Engineer
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Quick Summary

Overview

About Lendable Lendable is on a mission to build the world's best technology to help people get credit and save money. We're building one of the world’s leading fintech companies and are off to a strong start: One of the UK’s newest unicorns with a team of just over 700 people Among the…

Technical Tools
awsdockergcpgithub-actionsgraphqlkotlinkubernetespostgresqlreacttypescriptci-cdcybersecurityfintechmachine-learningsecurity-best-practices

Lendable is on a mission to build the world's best technology to help people get credit and save money. We're building one of the world’s leading fintech companies and are off to a strong start:

  • One of the UK’s newest unicorns with a team of just over 700 people

  • Among the fastest-growing tech companies in the UK

  • Profitable since 2017

  • Backed by top investors including Balderton Capital and Goldman Sachs

  1. Take ownership across a broad remit. You are trusted to make decisions that drive a material impact on the direction and success of Lendable from day 1

  2. Work in small teams of exceptional people, who are relentlessly resourceful to solve problems and find smarter solutions than the status quo

  3. Build the best technology in-house, using new data sources, machine learning and AI to make machines do the heavy lifting

About the Role

~1 min read

As our Cyber Security Engineer, you will be the bridge between Security and Engineering. You aren't here to block deployments; you’re here to ensure our code is resilient by design. You will empower our developers to ship fast without breaking the trust of our customers or regulators.

Backend

  • Kotlin 1.7.20

  • AWS

  • GraphQL (it would be nice if you were familiar with this but it’s not a deal breaker)

  • Postgres

  • RabbitMQ

  • Docker

  • Kubernetes

Frontend

  • React & React Native, TypeScript, MobX, Redux, Stylus and SASS

Other

  • We build our Kotlin projects using Gradle and GitHub Actions, deploying to production as soon as we finish a feature

  • We use JUnit Jupiter, Kotest and TestContainers for automated testing

Responsibilities

~1 min read
  • Secure the Pipeline: Integrate and automate SAST, DAST, and SCA tooling directly into our CI/CD pipelines to catch vulnerabilities before they reach production.

  • Harden the Product: Act as a Subject Matter Expert (SME) assisting engineers with the remediation of security vulnerabilities and bugs.

  • Safeguard AI: Design and implement security guardrails for AI-assisted development and LLM integrations, ensuring data privacy and preventing prompt injection or model leakage.

  • Threat Modelling: Partner with Product and Engineering teams to conduct threat modelling sessions for new features before they are built.

  • Security Architecture: Act as a consultant for infrastructure and application design, ensuring our AWS/GCP Kubernetes environments remain hardened.

  • Security Culture: Cultivate a Secure Development guild to level up our developers' secure coding skills.

  • Pragmatism: You understand the difference between partnering with Engineering and security being a blocker of progress.

  • Communication: You can translate a complex vulnerability into a business risk for a Product Manager and a technical fix for an Engineer.

  • AppSec Subject Matter Expertise: You have a strong understanding of critical security risks in applications, are able to identify them in code, and provide recommendations of how to remediate.

  • Cloud Native: Strong experience securing AWS/GCP environments and containerised workloads.

  • AI ready: You understand the unique risks of AI and have experience securing AI-driven workflows.

  • Intro call with Talent Team

  • Technical Interview

  • Final rounds:

    • Interview with our Head of Infosec

    • Culture Interview with our VP of Technology

  • Winning team: the opportunity to scale up one of the world’s most successful fintech companies

  • Flexible working: flexible approach tailored to each role. Hybrid roles require three days in-office weekly; fully remote roles include regular opportunities for in-person connection through socials and off-sites

  • Socials & connection: opportunities and events to come together, socialise, and get to know each other beyond the office walls

  • Health coverage: support for your physical and mental wellbeing, including private health cover

  • Retirement & savings: long-term financial wellbeing through retirement savings plans

  • Employee referral programme: earn a competitive bonus when you refer successful new team members

  • Office meals & snacks: enjoy a fully stocked kitchen, plus complimentary lunches prepared by in-house chefs on in-office days at select locations

  • Sustainable commuting: cycle-to-work and electric vehicle salary sacrifice schemes available in select locations

Please note: The availability and details of specific benefits vary by location and role. For more information, please speak to your Talent Partner.

Check out our blog!

Location & Eligibility

Where is the job
London
Hybrid — some on-site time required
Who can apply
Same as job location

Listing Details

Posted
April 7, 2026
First seen
May 7, 2026
Last seen
May 7, 2026

Posting Health

Days active
0
Repost count
0
Trust Level
16%
Scored at
May 7, 2026

Signal breakdown

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lendableApplication Security Engineer