Security Engineer – Cloud Migration to AWS

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We are seeking a hands-on Security Engineer to embed within a large-scale cloud migration programme, moving workloads into AWS. You will be responsible for designing, automating, and enforcing security controls throughout the migration lifecycle — ensuring that every workload lands in AWS with a secure, compliant, and auditable posture. This is a technical, build-focused role combining cloud security architecture, infrastructure-as-code, and Python automation.

Key Responsibilities

Define and implement the security controls, guardrails, and landing zone baseline for workloads migrating to AWS.

Design and operate AWS-native security tooling across accounts and Organizations (see Technical Skills below).

Build security automation in Python — remediation Lambdas, compliance-check scripts, event-driven response, and integrations with ticketing/SIEM systems.

Author, review, and maintain infrastructure-as-code (Terraform and/or CloudFormation) for security services, guardrails, IAM, networking, and encryption.

Integrate security into GitLab CI/CD pipelines — SAST, IaC scanning, secrets detection, dependency/container scanning, and policy-as-code gates.

Assess the security posture of workloads before, during, and after migration; identify and remediate misconfigurations and vulnerabilities.

Design secure network segmentation and connectivity between source environments and AWS (Direct Connect / VPN, Transit Gateway, security groups, NACLs).

Implement IAM least-privilege models, identity federation, and secrets management for migrated workloads.

Define encryption standards (at rest and in transit) using KMS, ACM, and TLS policy.

Support compliance and audit requirements (e.g. CIS Benchmarks, NIST, ISO 27001, SOC 2, PCI-DSS as applicable) and produce evidence.

Partner with migration, platform, and application teams to unblock security issues without slowing delivery.

Contribute to incident detection and response runbooks for the AWS environment.

Required Technical Skills

AWS Security Tooling

AWS Security Hub – aggregated findings, standards, and posture management

Amazon GuardDuty – threat detection

AWS Config – configuration compliance and drift detection, custom/conformance rules

AWS IAM / IAM Identity Center – least-privilege roles, policies, permission boundaries, federation

AWS KMS & ACM – encryption key management and certificates

AWS WAF & Shield – application and DDoS protection

Amazon Inspector – vulnerability scanning for EC2/ECR/Lambda

AWS CloudTrail – audit logging and monitoring

AWS Organizations & Service Control Policies (SCPs) – multi-account guardrails

AWS Secrets Manager / Systems Manager Parameter Store – secrets handling

Amazon Macie – sensitive data discovery (desirable)

AWS Control Tower / Landing Zone – governed account provisioning

Automation & Infrastructure-as-Code

Python – security automation, boto3, Lambda functions, remediation scripts, custom Config rules

Terraform – modules for security services, guardrails, IAM, networking

CloudFormation – templates and (desirable) StackSets across accounts

Familiarity with policy-as-code (e.g. OPA/Conftest, cfn-guard, Checkov, tfsec) is a strong plus

CI/CD & Version Control

GitLab – repositories, merge requests, and GitLab CI/CD pipeline development

Integrating security scanning into pipelines: SAST, DAST, IaC scanning, secrets scanning, SCA, container image scanning

Git branching, code review, and shift-left security practices

Migration & Infrastructure

Workload discovery and assessment ahead of migration

AWS migration tooling (Application Migration Service / MGN, DMS, Migration Hub) – desirable

Hybrid networking: Direct Connect, VPN, Transit Gateway, VPC design, security groups, NACLs

Operating system security hardening (Linux and/or Windows)

Required Experience & Qualifications

4+ years in security engineering, cloud security, or infrastructure security (adjust to seniority).

Demonstrable hands-on experience securing production AWS environments.

Proven experience delivering or securing a cloud migration programme.

Strong scripting/automation ability in Python.

Experience with IaC (Terraform and/or CloudFormation) in a production setting.

Comfortable working in a GitLab-based DevSecOps workflow.

Solid understanding of security frameworks and compliance standards.

Why Version 1?

At Version 1, we believe in providing our employees with a comprehensive benefits package that prioritises their wellbeing, professional growth, and financial stability.

Share in our success with our Quarterly Performance-Related Profit Share Scheme, where employees collectively benefit from a share of our company's profits

Strong Career Progression & mentorship coaching through our Strength in Balance & Leadership schemes with a dedicated quarterly Pathways Career Development programme

Flexible/remote working, Version 1 is tremendously understanding of life events and people’s individual circumstances and offer flexibility to help achieve a healthy work life balance

Financial Wellbeing initiatives including; Pension, Private Healthcare Cover, Life Assurance, Financial advice and an Employee Discount scheme

Employee Wellbeing schemes including Gym Discounts, Bike to Work, Fitness classes, Mindfulness Workshops, Employee Assistance Programme and much more. Generous holiday allowance, enhanced maternity/paternity leave, marriage/civil partnership leave and special leave policies

Educational assistance, incentivised certifications, and accreditations, including AWS, Microsoft, Oracle, and Red Hat

Reward schemes including Version 1’s Annual Excellence Awards & ‘Call-Out’ platform.

Environment, Social and Community First initiatives allow you to get involved in local fundraising and development opportunities as part of fostering our diversity, inclusion and belonging schemes.

And many more exciting benefits… drop us a note to find out more.

Version 1 is an equal opportunities employer.

We are committed to building a diverse, inclusive and respectful workplace where everyone feels valued and able to thrive. We welcome applications from people of all backgrounds, identities and lived experiences, and we value the different perspectives people bring.

We want every candidate to have a positive and accessible recruitment experience. If you need reasonable adjustments at any stage of the process, please contact Paul.Steed@version1.com at Version 1. We will consider all requests carefully, respectfully and confidentially.

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