Security Engineer - Secure by Design & Platforms

SEFE Marketing & Trading Ltd; Greater London; Hybrid; GBP 60,000 - 100,000; Full time

Benefits offered by this job

Hybrid work model

London office location

Job summary

SEFE Marketing & Trading Ltd is seeking a Security Engineer – Secure by Design & Platforms to embed security across SEFE’s technology landscape. You will work in the Security Platforms & Architecture team, delivering hands‑on engineering, supporting secure‑by‑design practices, and strengthening security platforms.

You will influence architecture reviews, security assurance, and platform operations while collaborating with delivery teams to implement pragmatic controls.

Qualifications

• Proven experience delivering secure‑by‑design outcomes in complex tech environments.
• Experience in architecture reviews, security assurance, and project delivery.
• Strong understanding of security across applications, infrastructure, cloud, and enterprise platforms.
• Hands‑on with configuring or administering security technologies, esp. Microsoft security tools.

Responsibilities

• Partner with programmes to embed secure‑by‑design from inception to implementation.
• Conduct security design reviews and threat modelling to identify risks and mitigations.
• Provide security assurance across initiatives and support go‑live reviews.
• Manage and enhance Microsoft‑focused security platforms, configurations, integrations and improvements.
• Coordinate security platform support, vendor engagement, and continuous security improvements.
• Develop and maintain security standards, templates, and best practices across teams.

Skills

Secure-by-design

Security architecture

Threat modelling

Microsoft security

Stakeholder management

Security governance

Tools

Microsoft Defender

Azure Security Center

Job description

IN SHORT

As a

IN SHORT

As a Security Engineer – Secure by Design & Platforms, you will play a key role in embedding security into SEFE’s technology landscape, ensuring security considerations are incorporated throughout the delivery lifecycle. Working within the Security Platforms & Architecture team, you will provide hands‑on security engineering expertise, support secure‑by‑design practices, enhance security platforms, and help delivery teams implement pragmatic security controls that strengthen the organisation’s overall security posture.

What Will You Do

• Partner with programme and project teams to embed secure‑by‑design principles from inception through to implementation, ensuring security requirements are clearly defined and consistently applied.
• Conduct security design reviews, assess solution architectures, and perform threat modelling activities to identify risks, vulnerabilities, and appropriate mitigation strategies.
• Provide ongoing security assurance across technology initiatives, supporting governance processes, security readiness assessments, and go‑live reviews to ensure security requirements are met.
• Manage and enhance Microsoft-focused security platforms, maintaining configurations, supporting integrations, and improving platform effectiveness to maximise security value.
• Own and coordinate security platform support activities, including ticket management, issue resolution, vendor engagement, and the implementation of platform improvements and new security capabilities.
• Develop and maintain security standards, templates, guidance, and best practices while driving continuous improvement across security engineering, assurance, and platform operations.

What Will You Bring

• Proven experience delivering secure‑by‑design outcomes within complex technology environments, including participation in architecture reviews, security assurance, and project delivery activities.
• Strong understanding of security principles across applications, infrastructure, cloud services, integrations, and enterprise technology platforms.
• Hands‑on experience supporting, configuring, or administering security technologies, particularly within the Microsoft security ecosystem, including identity, endpoint, cloud, monitoring, and data protection capabilities.
• Ability to analyse technical solutions, identify security risks, and work collaboratively with engineering and delivery teams to implement practical and proportionate controls.
• Strong stakeholder management and communication skills, with the ability to engage effectively across architecture, engineering, operations, delivery, and business teams.
• Self‑motivated, pragmatic, and delivery‑focused approach, with the ability to manage multiple priorities, adapt to changing requirements, and deliver value with minimal supervision.

You don’t need to meet every requirement. If the role excites you, we’d love to hear from you.

About Us

SEFE is an international energy company anchored in Europe, delivering energy solutions that ensure reliable and affordable supply. Our activities span the entire energy value chain – from origination and trading to sales, transport and storage. With decades of trading expertise and a growing LNG portfolio, SEFE is one of Europe’s leading suppliers to industrial customers, providing more than 200 TWh of gas and power each year. We supply over 50,000 clients, from small businesses to municipalities and multinational organisations. By investing in clean energies, we support our customers on their decarbonisation journey and contribute to the energy transition. SEFE employs over 2,000 people worldwide and is owned by the Federal Government of Germany.

Securing energy – now and for the future.

Our Benefits

We’re committed to creating an inclusive environment that embraces diversity and fosters the development of knowledge, skills, and experience. Whatever your role, you’ll find an open, welcoming atmosphere that empowers you, and recognises your contribution.

This is a contract role, initially for 6 months with the potential to extend. Based in our London office, conveniently located close to travel networks we offer the opportunity to follow a hybrid working model.

Join SEFE and help us secure gas supply across Europe and shape a better, more sustainable tomorrow.