About Arc: Arc is a leading IT Managed Services Provider (MSP) based in the UK, delivering innovative and reliable IT solutions to businesses across various industries. With a strong reputation for excellence, we offer a range of services, including IT support, hybrid cloud solutions, cybersecurity, infrastructure management, PowerApps and AI. Our team is dedicated to delivering outstanding customer service and technical expertise to help businesses succeed. Role Overview: We are looking for an experienced Senior Security Analyst to join our growing Security team at Arc Systems. This role is ideal for a security professional with a strong MSP background who thrives on protecting customer environments, responding to security incidents, and delivering practical, effective security solutions. You will play a key role in monitoring and improving customer security postures, leading security initiatives and working closely with customers to implement modern Microsoft-based security solutions. Key Responsibilities: Monitor and respond to security alerts and incidents Involvement in areas such as security reviews, security helpdesk, planning and implementing deployment of security solutions. Monitoring the output of security platforms. MS365 Security, modern work and deployment of other security tooling. Ad-hoc customer projects (including MFA deployments, other customer consultancy). Providing an escalation point and mentoring to other security team members. Required Skills & Experience: Delivered security solutions and architecture aligned with customer requirements, improving security and compliance posture. Excellent written and verbal communication skills, and have a passion for Information and Cyber Security Experience working in an MSP environment, and able to apply security principles and best practises, learned through a history of delivering of security products and responding to events and incidents within a range of Microsoft environments. Experience with reviewing security of an estate and implementing Cyber Essentials (Standard and Plus) and ISO 27001. Experience with our Core Security solution stack; 365, azure, local cloud infrastructure Vulnerability scanning and Penetration testing deployment and remediation Personal Characteristics: Flexible, adaptable and calm when under pressure Must be able to work on own initiative Willingness to learn Honest and Dependable Well-presented, personable and a team player! Able to explain technical concepts to non-technical staff and customers Analytical mindset, and determination to troubleshoot a task to resolution Happy to travel to customers for in-person meetings and installations Working Hours Able to cover the following shift patterns: 8:00-4:30 / 9:00-5:30 / 9:30-6:00 Location Hybrid between Basildon Office and Home Working (Flexible) What We Offer: A dynamic and supportive working environment. Opportunities for career progression within the company. Ongoing training and professional development. Competitive salary Key Points: Diversity & Inclusion: We celebrate diverse backgrounds and perspectives; they make us stronger. If you’re excited about this role, apply even if your experience doesn’t align perfectly. If not this one, you could be just the right fit for other roles we are recruiting for. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. UK Right to Work: All applicants must have the right to live and work in the UK. We cannot offer sponsorship at this time. Accessibility: We are committed to providing reasonable adjustments for any candidates with disabilities. If you require adjustments, please outline these requirements in your application.