Application Security Engineer (hybrid) in London

We’re home to the UK’s largest choice of properties and are the go-to destination for millions of people planning their next move, reading the latest industry news, or just browsing what’s on the market.

Purpose

This is the first engineering hire into Rightmove's growing Application Security function, reporting to the Lead Application Security Engineer. You'll work closely with engineering teams to deliver day-to-day AppSec capabilities across security tooling, vulnerability management, secure design and threat modelling, while helping shape how Application Security operates as the function matures.

Key Responsibilities

• Vulnerability Management & Security Tooling
  • Support the rollout and operation of application security tooling across engineering repositories, including SAST, SCA and secrets detection.
  • Triage and classify security findings across repos, driving remediation of the secrets backlog.
  • Manage the day-to-day operation of vulnerability management, including findings triage, monitoring and engineering engagement.
  • Maintain engineer-facing guidance for resolving vulnerabilities and requesting exceptions.
• Cloud Security
  • Support cloud security posture management through Prisma Cloud, including findings triage, monitoring and engagement with relevant engineering/platform teams.
• Engineering Team Engagement
  • Run a risk-tiered engagement cadence with engineering teams based on SLA compliance.
• Security Reviews & Triage
  • Triage inbound security requests per the AppSec triage SLA.
  • Conduct secure design and API security reviews for new services, integrations, and RFCs.
  • Review and respond to penetration test requests and third-party integration reviews.
• Threat Modelling
  • Facilitate threat modelling sessions using the team's runbook/guide.
  • Work with engineering teams to establish and improve threat modelling practices across squads.
• Process & Documentation
  • Maintain runbooks and process documentation as the function matures.
  • Support recurring review cadences (e.g. access reviews, vulnerability audits).

Requirements

• Must have:
  • Practical experience in application security, security engineering or a related hands-on security role.
  • Able to assess security findings in context, distinguish meaningful risk from tooling noise, and make pragmatic recommendations to engineering teams.
  • Working proficiency in Python (able to read, modify, and write scripts used for internal tooling).
  • Practical experience with DAST/SAST/SCA/secrets scanning tools (Aikido, Snyk, Semgrep, Checkmarx, or similar).
  • Experience with Prisma Cloud or a comparable cloud-native security platform.
  • Comfortable reading code and understanding CI/CD pipelines (GitLab CI or equivalent).
  • Experience running or contributing to threat modelling exercises.
  • Comfortable running recurring stakeholder syncs with engineering teams.
  • Strong written communication.
  • Able to triage and prioritise a high volume of inbound requests independently.
• Nice to have:
  • Exposure to GCP security controls.
  • Familiarity with supply-chain security (npm/PyPI dependency risks).
  • Prior experience in a scaling/greenfield security function.

Success in first 6 months

• Fully ramped on Aikido, independently supporting rollout, triage and day-to-day operations.
• Cloud Security handover complete: backlog triaged, monitoring cadence running.
• Risk-tiered engagement cadence live and running its first full cycle.
• Independently triaging and closing security review requests within SLA.
• Independently facilitating threat modelling sessions with engineering teams.
• Identified and delivered improvements to at least one AppSec process or workflow.

Life at Rightmove

Despite our growth, we’ve remained a friendly, supportive place to work, with employee #1 still working here! We create value by delivering results and building trust with partners and consumers. We care deeply by being real, having fun, and valuing diversity. We believe in careers that open doors and help our team develop by providing an open and inclusive work environment, offering ongoing training opportunities, and supporting charity fundraising events.

What we offer

• Cash plan for dental, optical and physio treatments.
• Private Medical Insurance, Pension and Life Insurance, Employee Assistance Plan.
• 27 days holiday plus two (paid) volunteering days a year to give back, and holiday buy schemes.
• Contributory stakeholder pension.
• Life assurance at 4x your basic salary to a spouse, family member or other nominated person in your life.
• Competitive compensation package.
• Paid leave for maternity, paternity, adoption & fertility.
• Travel Loans, Bike to Work scheme, Rental Deposit Loan.
• Access deals and discounts on things like travel, electronics, fashion, gym memberships, cinema discounts and more.
• We offer hybrid working with a minimum of 2 days in the office.

As an Equal Opportunity Employer, Rightmove will never discriminate based on age, disability, sex, race, religion or belief, gender reassignment, marriage / civil partnership, pregnancy/maternity or sexual orientation. We are committed to creating a welcoming and inclusive environment for all employees, regardless of their background or identity, to develop and promote a diverse culture that reflects the communities we serve.

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