Thought Machine's mission is bold – to properly and permanently rid the world's banks of legacy technology. To achieve this, we

have developed the foundations of modern banking through core and payments technology which run natively in the cloud. What we are

attempting is hard and means we need great people working together to build great technology.

We have grown rapidly in the past few years – growing our team to more than 550 individuals across offices in London, New York,

Singapore, Sydney and our newly established Engineering Hub in Lisbon. We have raised more than £500m in funding and our investors

include Molten Ventures, Eurazeo, Intesa Sanpaolo, Temasek, Nyca Partners, JPMorgan Chase Strategic Investments, Standard

Chartered Ventures, and more.

We have created a culture that enables our team to produce the best work in the industry while ensuring we have fun along the way.

We're regularly cited as having a fantastic workplace culture and have been recognised by Sifted magazine as having one of the

highest Glassdoor ratings for a UK fintech company and the industry's most generous employee share package. Named one of the

world's most innovative fintechs by Global Finance Magazine, we were also recognised by the Financial Times as one of Europe's

fastest-growing companies for two consecutive years—and a UK Best Employer for 2026.

This is a full-time, permanent position based in our Lisbon office, requiring four days a week onsite.

A Senior Cloud Security Engineer is a part of the larger Security Engineering team. We desire engineers who are able to lead the

engineering, design, and delivery of solutions to security problems. We have a passion for exploring unique solutions and sharing

differing perspectives that leads to the development of leading solutions to complex security problems.

The Security Engineering team is cross-functional and made up of diverse people who bring their own unique expertise in either (or

both) application security and infrastructure (cloud) security. We allow team members to move from project to project, subject to

subject based on their skills, experience, and interests. Each team member brings their own expertise to bear in ways that are

collaborative and designed to find the best solutions to complex problems.

The team covers the following areas, and individuals contribute to any of them based on their own expertise:

Designs of secure products and platforms

Reviews of engineering designs, threat models, and coding practices

Threat modelling to identify relevant areas of focus

Define the best in class protective and detective security controls

Development of security tooling and automation

Implement and maintain cutting-edge tools and measures

A large part of the Thought Machine security function is greenfield; we are building the bank of tomorrow with cutting edge

technology. To achieve this we need innovative thinking to create security solutions in our products and our infrastructure. We

look for people who think outside the box, and outside of traditional silos to find unique solutions and approaches to security

that lead the industry.

DUTIES

Provide security expertise and mentorship to Thought Machine engineering teams through the stages of planning, design, and

testing of new solutions.

Lead the design and delivery of cloud native preventative and detective controls that operate at scale

Build and maintain automation to actively audit and assess infrastructure-as-code and in-place infrastructure

Develop (in code) security tooling, contribute to third-party security products, and develop updates for existing tooling that

is in use in our environment

Co-develop threat models with engineering teams that identify relevant threats and relevant strategies for mitigation

Work with cloud engineering and operations teams to develop tooling that maintains our secure operating state in production

Perform security reviews and security testing

Lead complex projects to develop security capabilities, tooling, and functionality.

Contribute to the overall security strategy, security tooling selection and creation

Operate collaboratively with other Thought Machine teams with trust and influence

REQUIREMENTS

Essential

Familiarity with building and deploying containerised applications in public cloud using CI/CD frameworks and infrastructure

automation

Knowledge of cloud networking architecture, cloud operations, security, automation and orchestration

Familiarity with performing security threat modelling and design reviews

Knowledge of security in distributed systems

Familiarity with good security practices with containers and Kubernetes

Experience with languages such as Go, Python, or other modern programming languages

Coding experience in the creation, automation, and integration of security tools

Experience in version control systems such as Git

Experience with designing, developing, and maintaining security in public cloud environments such as AWS and GCP

Ability to lead and encourage good design skills including creative and critical thinking, collaboration, full evaluation of

options, and objective decision making to find a preferred solution.

Strong interpersonal and communication skills to support collaboration with other personnel and teams

Desirable

Existing experience building and operating distributed systems at scale

Awareness and experience with “well-architected” cloud security frameworks or CSA-CCM

Contributions to the security community (public research, blogging, presentations, etc)

Experience in performing penetration testing and security testing

Experience developing tools and interacting with cloud provider API

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

We actively hire candidates who demonstrate technical excellence in their field and welcome people of all ages and backgrounds,

providing everyone with equal access to professional development. You are encouraged to apply even if your experience doesn't

accurately match the job description. We also encourage applications from those with different abilities, including candidates

with ADHD, autism, dyslexia or dyspraxia.

Role

Senior Cloud Security Engineer

Locations

Portugal

Published

July 14

Deadline

August 16

Tags for this job

Python AWS GCP Kubernetes Go Rust CI/CD

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