Security Engineer-UK

Certinia; United Kingdom; Remote; GBP 40,000 - 70,000; Full time

Job summary

Certinia is seeking a Security Engineer to join our hands-on security team. You will bridge triage and security architecture, perform investigations, incident handling, and implement security controls across cloud environments.

This role operates independently on routine security tasks while collaborating with senior engineers on threat scenarios and cloud design. You will maintain SOC capabilities, contribute to automation, and report to the Head of Information Security.

Qualifications

• 1–3 years in Information Security, SOC, or related field.
• Solid networking, OS, and web app security knowledge (OWASP Top 10).
• Experience securing resources in AWS, Azure, or GCP.

Responsibilities

• Perform deep-dive investigations and root-cause analysis of alerts.
• Execute incident response phases including containment, eradication, and post-incident review.
• Analyze phishing trends and triage reported emails.
• Monitor SIEM and triage events daily.
• Develop cloud security controls and automation scripts.

Skills

Security Operations

Threat Analysis

Incident Response

Cloud Security

Python/Bash scripting

MITRE ATT&CK

Communication Skills

Tools

Docker

Kubernetes

SAST/DAST tools

Code Review

Job description

Certinia delivers a Services-as-a-Business platform that powers and connects all aspects of services operations, from services estimation and delivery to customer success management and financial planning and accounting. The company’s Professional Services Automation (PSA), Customer Success (CS), and Financial Management (FM) solutions—delivered on Salesforce’s leading cloud platform—provide the ability to run a connected services business, deliver with intelligence, and achieve business agility. Headquartered in Austin, Texas with presence around the world, Certinia is backed by Haveli Investments, TA Associates, General Atlantic and Salesforce Ventures. For more information, visit www.certinia.com .

THE ROLE

The Security Engineer will be a hands-on technical contributor, acting as a bridge between initial triage and high-level security architecture. You will move beyond simple monitoring to active investigation, incident handling, and the implementation of security controls. This role requires the ability to work independently on routine security operations while collaborating with senior engineers on complex threat scenarios and cloud architecture. You will be responsible for maintaining SOC capabilities, executing offensive security tasks, and assisting with automation efforts. This role reports to the Head of Information Security.

WHAT YOU WILL DO IN THIS ROLE

• Security Operations & Threat Management Support:
• Perform deep-dive investigations and root cause analysis of alerts.
• Execute specific phases of Incident Response (IR) procedures independently, including containment, eradication, and post-incident review.
• Execute the Phishing Triage process, analyzing reported emails, and validating threats.
• Assist with the day-to-day monitoring of the SIEM (Security Information and Event Management) platform, including triage of incoming events.
• Perform proactive threat hunting using intelligence feeds to search for indicators of compromise (IoCs) within the network and cloud environments.
• Perform initial triage of incoming reports to our public Bug Bounty Program.
• Offensive security:
• Execute internal penetration tests on applications and cloud infrastructure with limited supervision, following established methodologies.
• Support red team exercises by executing specific attack vectors and helping to simulate adversary behaviors.
• Design and launch phishing simulations, analyzing the results to identify training gaps and improve human awareness.
• Security Engineering & Cloud Focus:
• Implement and maintain specific security controls within cloud environments (AWS, Azure, GCP), such as IAM policies, security groups, and storage encryption configurations.
• Assist in analyzing CNAPP dashboards to validate incoming alerts and detect legitimate threats.
• Write scripts (e.g., Python, Bash) to automate IR/DR steps, accelerate log analysis, or create custom detections or analyzers.
• Perform security reviews of internal tools and new features, providing actionable feedback to development teams.

WHAT YOU NEED TO BE SUCCESSFUL IN THIS ROLE

• 1–3 years of hands-on experience in Information Security, SOC, or a related technical field.
• Deep understanding of networking (TCP/IP), operating systems (Linux/Windows/macOS), and web application security (OWASP Top 10).
• Practical experience securing resources in at least one major cloud provider (AWS, Azure, or GCP).
• Proficiency in Python, Bash, or similar languages for automation and parsing logs.
• Demonstrated ability to investigate security events, analyze logs, and understand the lifecycle of a cyber attack (MITRE ATT&CK framework).
• Ability to solve technical problems with minimal guidance and manage your own queue of tasks.
• Ability to explain security risks to non-security colleagues (e.g., developers or IT staff).

WHAT ELSE WOULD BE GREAT

• eJPT, GSEC, CySA+, SSCP, or Associate-level Cloud Security certifications (e.g., AWS Certified Security – Specialty).
• Familiarity with Docker and Kubernetes security concepts.
• Experience with SAST/DAST tools or code review.
• A history of participation in CTFs, Hack The Box, or contributions to the security community.