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Application Security Engineer

Requirements

  • Expertise with a programming language (e.g. Python, Go or Java)
  • Experience of security in a DevOps environment
  • Experience in web application penetration testing and security tooling (e.g. Burp proxy, Web/Network Scanners, Static code analysers, etc)
  • Coding experience for automating/integrating security tools and creation of security tools
  • Knowledge of security in distributed systems at scale
  • Cloud and containers technology knowledge (e.g. AWS, GCP, Kubernetes, Docker)
  • Experience of performing security design reviews, threat modelling and risk assessments
  • Knowledge of application security issues

Desirable

  • Professional security qualifications are desirable (e.g. CISSP, Offensive Security, Sans Institute, etc.)
  • Contributions to the security community (public research, blogging, presentations, etc)
  • Awareness and experience of the Data Protection Act, ISO 27001 and PCI-DSS

What You'll Be Doing

  • Drive improvements to Thought Machine's product security posture through strategic planning and collaboration
  • Produce production web scale grade application security design
  • Review and produce data privacy and financial regulatory designs
  • Perform design reviews and threat modeling of Thought Machine services and products
  • Perform vulnerability assessments and security testing
  • Provide subject matter expertise on security and privacy throughout the Software Development lifecycle
  • Liaison with development teams for design, code reviews & education
  • Contribute to security strategy, security tooling selection and creation
  • Conduct regular security assessments and code reviews

Benefits

  • Highly competitive salary
  • Voluntary Pension Plan (match up to 5%)
  • Private Healthcare Insurance
  • Comprehensive Life Insurance
  • 25 days holiday plus public holidays
  • Two charity days a year
  • Daily Meal Allowance
  • Access to outstanding learning materials and courses
  • Sports and hobby clubs, subsidised by Thought Machine
  • All the latest tech you need
  • Huge range of healthy (and not-so-healthy) snacks, smoothies and drinks
  • A talented and experienced team as your colleagues
  • An environment where we encourage learning and progress
AI Summary ✨
Thought Machine logo

Thought Machine

Lisbon, Portugal

Experience: Senior
Posted: May 29, 2026
Last seen: an hour ago
Aws
Docker
Gcp
Golang
Java
Python
backend

Why we track Thought Machine

Thought Machine is a London-based fintech building cloud-native core banking infrastructure. Their platform Vault powers banks around the world. The engineering is technically deep—distributed systems, financial transaction processing, and cloud infrastructure at scale.

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