Application Security Engineer New London, UK

Greenhouse Software, Inc.; Greater London; Hybrid; GBP 70,000 - 100,000; Full time

Job summary

Rightmove is hiring an Application Security Engineer to join the expanding AppSec function. You will partner with engineering teams to deliver security tooling, manage vulnerability workflows, and shape secure design practices across services.

Responsibilities include triage of findings, threat modelling, and maintaining runbooks, with a cloud-security focus using Prisma Cloud. The role involves collaboration with multiple squads and stakeholders to advance security maturity.

Qualifications

• Practical experience in application security or security engineering.
• Ability to assess findings and make pragmatic recommendations to engineering teams.
• Working proficiency in Python (read, modify, and write scripts).
• Experience with SAST/DAST/SCA/secrets scanning tools.
• Experience with Prisma Cloud or a comparable cloud-native security platform.
• Familiar with reading code and CI/CD pipelines (GitLab CI or equivalent).
• Experience leading threat modelling exercises and engaging with engineers.

Responsibilities

• Triage and classify security findings across repositories; drive remediation.
• Manage day-to-day vulnerability management, findings triage and engagement.
• Roll out and operate application security tooling across engineering repos.
• Develop and maintain engineer-facing guidance for resolving vulnerabilities.
• Support cloud security posture management through Prisma Cloud and related teams.
• Facilitate threat modelling sessions and improve practices across squads.

Skills

Vulnerability management

Python

Threat modelling

CI/CD pipelines

Security engineering

Tools

Snyk

Semgrep

Aikido

Checkmarx

Prisma Cloud

GitLab CI

Job description

Our vision is to give everyone the belief they can make their move. We aim to make moving simpler,by giving everyone the best place to turn to and return to for access to the tools, expertise, trust, and belief to make it happen.

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

Application Security Engineer

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 teamsto deliver day-to-day AppSec capabilities across security tooling, vulnerability management,secure design and threat modelling, while helping shape how Application Security operates asthe function matures.

Key Responsibilities

• Vulnerability Management & Security Tooling
• Support the rollout and operation of application security tooling across engineeringrepositories, 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
• 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
• Facilitate threat modelling sessions using the team's runbook/guide
• Work with engineering teams to establish and improve threat modelling practices acrosssquads

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-onsecurity role
• Able to assess security findings in context, distinguish meaningful risk from tooling noise, andmake 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
• 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’ve done this by placing the Rightmove Hows at the heart of everything we do. These are the essential values that reflect our culture, and include:

• Wecreatevalue…by delivering results and building trust with partners and consumers.
• Wethinkbigger…by acting with curiosity and setting bold aspirations.
• Wecaredeeply…by being real, having fun, and valuing diversity.
• Wemovetogether…by being one team - internally collaborative, externally competitive.
• Wemakea difference…by focusing on delivering measurable impact.

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. And with 89% of Rightmovers saying we’re a great place to work, we’re clearly doing something right!

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.
• Charitable contributions through Payroll Giving and donation matching.
• 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. For our roles, such as Field or Home-based positions, different working arrangements apply - full details will be shared during the recruitment process.

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.

At Rightmove, we believe that a diverse and inclusive workforce leads to better innovation, productivity, and overall success. 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.