
Network Security Engineer Checkpoint& F5 (5 Days Onsite)
On site
Waterside, United Kingdom
Freelance
19-03-2025
Job Specifications
Lakarya is seeking skilled Network L2 and L3 Engineer for network infrastructure of a leading airline.
Location : Heathrow , London
12 month Contract
Key Responsibilities:
Possess a strong understanding of OSI layers 1-7 to effectively analyze and troubleshoot complex networking issues.
Monitor network performance using various tools, identifying and addressing hardware, software, and event alerts.
Follow Standard Operating Procedures to triage and resolve incidents, coordinating with third-party vendors and internal IT teams as necessary.
Develop and maintain strong relationships with customers and supporting departments.
Support and troubleshoot Cisco WLAN Controllers, SSIDs, and Access Points.
Implement and manage firewall security, VPNs, NAT policies, and oversee software patch management.
Configure and troubleshoot routing and switching protocols, including OSPF, BGP, EIGRP, VLANs, STP, VRF, MC-LAG, FHRP, DMVPN, and NAT policies.
Understand LAN, WAN, and SDWAN concepts, supporting enterprise-class routers and switches in a global environment.
Implement and troubleshoot DNS (internal and external), IPAM, and DHCP for IP management.
Administer F5 LTM, including SSL certificate renewals, iRules creation, and software upgrades.
Proactively analyze data from network monitoring tools to prevent potential issues.
Test and implement software patches and firmware updates for network and security devices.
Coordinate with vendors and suppliers, manage major incidents, and handle problem and vendor management tasks.
Key Skills and Experience:
Must-Have:
Experience with Cisco and Juniper routing and switching in data centers.
Understanding of BGP and OSPF protocols.
Knowledge of Checkpoint Firewall, network security, and VPN concepts.
Familiarity with Cisco Wireless and SDWAN concepts.
Good-to-Have:
Experience with Cisco Meraki.
Knowledge of AWS Networking.
Understanding of Cisco ISE and security protocols.
Familiarity with network management systems like BIG IQ, SolarWinds, CA Spectrum, ThousandEyes, NetBrain, and firewall monitoring tools such as Checkpoint.
Person Specification:
Candidates must have strong communication skills for this client-facing role. L2 Administrators are required to cover 24x7 shifts, while L3 Administrators will work during UK business hours and participate in an on-call rota during off-hours.
This opportunity allows professionals to engage with cutting-edge technology in a dynamic industry, contributing significantly to the operational excellence of a major airline
About the Company
Lakarya is a professionally managed Technical Consulting Company focusing on highly skilled information technology consultants, headquartered in Sterling, VA. We provide highly trained and experienced staff in specific technologies to Fortune 500 firms. Our ability to recruit and provide candidates across the countries gives us a distinct competitive advantage. Our primary goal is to provide every client with a qualified, dedicated and skilled manpower who fits the company's environment and exceeds expectations working with... Know more
Related Jobs


- Company Name
- Pontoon Solutions
- Job Title
- Security Consultant
- Job Description
- Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone’s chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. Join us in shaping a sustainable energy future! Our Client is a leading Energy System Operator for Great Britain, ensuring that the nation has the essential energy it needs by balancing supply and demand every second of every day. They are on an exciting journey toward a secure and sustainable energy landscape, and they need talented individuals like you to be a part of it! Role: Security Assurance Consultant Duration: 6 Months (extension options) Location: Wokingham, Warwick or Glasgow (Hybrid) Rate: £700 - £800 per day (umbrella) About the Role: We are seeking a dynamic Security Assurance Consultant to play a pivotal role in our IT separation and migration programme. This is your opportunity to contribute to the advancement of our cyber security strategy while working closely with various stakeholders. You will ensure that all IT-related activities adhere to our security policies and frameworks, implementing a "Secure by Design" approach. Primary Responsibilities: Deliver security advisory, consultancy, and assurance activities across our application migration and separation programme. Collaborate with Security Architecture to ensure security requirements are clear, documented, and implemented effectively. Participate in design and architecture governance processes to embed security policy throughout all lifecycle stages. Conduct risk assessments against proposed designs to support informed decision-making. Maintain regular contact and relationships with stakeholder security teams to ensure alignment. What We’re Looking For: A solid understanding of security techniques for securing devices and communications, including authentication, encryption, and integrity checking. A proactive approach and creativity in finding novel and pragmatic solutions. Prior experience in Security Architecture is beneficial. Demonstrated experience in assuring or securing cloud environments, particularly Microsoft Azure. Familiarity with high-assurance environments such as CNI, Government, or finance. Knowledge of the Network & Information Systems Regulations 2018 (NIS). Excellent written and spoken communication skills. Strong customer engagement and stakeholder management experience. The ability to challenge the status quo and engage in difficult conversations when necessary to protect our interests. Why Join Us? Be part of a team that is leading the charge towards a zero-carbon operability of the electricity system by 2025! You will have the chance to make a real difference in the energy landscape while working in a vibrant and supportive environment. If you are a motivated individual with a passion for cybersecurity and a desire to contribute to a greener future, we want to hear from you! Apply Now! Take your career to the next level and help us secure the energy future of Great Britain. Submit your application today and let’s make a positive impact together! Candidates will ideally show evidence of the above in their CV to be considered. Please be advised if you haven't heard from us within 48 hours then unfortunately your application has not been successful on this occasion, we may however keep your details on file for any suitable future vacancies and contact you accordingly.


- Company Name
- Contechs
- Job Title
- Cyber Security Consultant
- Job Description
- Cyber Security Consulting Specialist 12-month initial contract Hybrid working - Manchester (2-3 days per week onsite) £69 per hour (Inside IR35), 40 hours per week *Applicants MUST have proof of immediate, on-going and valid eligibility to work full time in the UK and travel within the EU.* About the company I am currently recruiting on behalf of a Luxury Automotive OEM, based in Manchester, who are seeking a Cyber Security Consultant to join their team Job Description As Cyber Security Consultant, your main responsibilities include: Providing consultation to product teams, in security architecture and design Conduct security reviews of new, and existing, products and services Developing and owning architectural solutions, that deliver the highest standard of security Collaborating closely with Solution Architecture team, to ensure the systems are secure by design Working with engineering teams to create threat models Qualifications / Skills needed Software engineering, with DevSecOps Cyber security best practices, security threats and controls Application security and threat modelling SDLC process, technology, and automation, in a DevOps environment; with OWASP best practice Agile delivery frameworks Why work through Contechs? Contechs is a leading Automotive, Design, Engineering, Technology and Innovation Recruitment Consultancy. Founded in 1997, with an inhouse Contractor Care Team to support all external employees, acts as an employment agency for permanent and contract recruitment. How to Apply If you're interested in applying for this position, submit your application and one of our recruiters will be in touch. If you know anyone that is suitable for the role, please visit the below page where we offer up to £600 referral fee: https://www.contechs.com/refer


- Company Name
- Empiric
- Job Title
- Security Software Engineer
- Job Description
- Authentication Engineer (FIDO, Java Microservices, React JS) - UK We are looking for an Authentication Engineer to design and implement secure, passwordless authentication systems using FIDO (Passkeys). You will work with Java microservices and React JS to develop and integrate authentication solutions that enhance security and user experience. Key Responsibilities Implement FIDO (Passkeys) authentication in Java microservices and React applications. Develop secure authentication workflows using public-key cryptography. Integrate and maintain identity and access management (IAM) solutions. Work with OAuth, OpenID Connect (OIDC), and WebAuthn for authentication processes. Develop and optimise microservices-based authentication APIs. Ensure compliance with security best practices and industry standards. Collaborate with security teams to enhance authentication protocols. Work with CI/CD pipelines to deploy authentication services. Skills & Experience Required Strong knowledge of FIDO (Passkeys), WebAuthn, and public-key cryptography. Experience in Java (Spring Boot) microservices development. Hands-on experience with React JS for implementing authentication flows. Familiarity with OAuth 2.0, OpenID Connect (OIDC), and JWT. Experience working with authentication APIs and integrating third-party identity providers. Strong understanding of security best practices in authentication and identity management. Experience with cloud platforms (AWS, GCP, or Azure) is a plus. Nice to Have Experience with Fast Identity Online (FIDO2) server implementation. Knowledge of biometric authentication methods. Familiarity with Zero Trust security models.


- Company Name
- Head Resourcing
- Job Title
- Senior Network Engineer
- Job Description
- Senior Network Engineer 12 months £399 Inside IR35 Onsite and potential travel Glasgow and UK Senior Network Engineer needed for our Banking Client in Glasgow, though the role will require occasional travel to sites across the UK. . The role requires a strong Senior Network Engineer with significant demonstrable Network & Voice experience along with detailed knowledge in TCP/IP, LAN, WAN, VPN, Wireless, routing protocols (OSPF, BGP) and network monitoring tools. Candidates will ideally have Cisco Certified Network Professional Routing and Switching (CCNP Routing & Switching) or equivalent level experience. Candidates must engage via an FCSA accredited Umbrella Company, the maximum rate is £399 per day to Umbrella, and the role is hybrid with some time from home and some time working/visiting branches and offices to support agreed activities. You will be part of a team supporting a comprehensive programme in place to reduce / remove legacy / currency debt and consolidate the Banks network and voice platforms. The role holder needs to have a valid driver’s licence and may be required to work at and/or visit the Banks offices and branches, working with the Network Infrastructure and Voice teams to deliver: Configuration and maintenance of routing, switching and security devices within the enterprise campus and Data Centre environments. Support the delivery of continual improvement initiatives to demonstrably reduce risk and increase performance, efficiency and productivity. Lifecycle management for all network devices including upgrades, capacity management and succession planning. Support delivery of Network/Voice solution design documents. Technical support for complex problems and sharing of specialist experience. Using knowledge of network design principles to develop advanced switching and routing, security, Data Centre, architectures with VPN and wireless domains. Key Skills and Experience Able to demonstrate significant network and voice experience. Cisco Certified Network Professional Routing and Switching (CCNP Routing & Switching) or equivalent level of experience. Experienced with firewalls especially working with Cisco, FortiGate, Juniper or Palo Alto. Detailed knowledge in TCP/IP, LAN, WAN, VPN, Wireless, routing protocols (OSPF, BGP) and network monitoring tools Strong technical expertise with Cisco devices, including ACI. Able to drive with a full UK Driving License Collaborative team player with excellent verbal and written communication skills. Broad knowledge of IT infrastructure, systems and services Proficient in the use of the MS Office suite (MSP, PowerPoint etc.) and ServiceNow If you have the required skills and are interested and available, please Apply Immediately! Head Resourcing is committed to being an inclusive business where diversity is valued and celebrated. Diversity to us, includes but is not limited to educational background, socio-economic background, neurodiversity, age, marriage and civil partnership status, veteran status, gender, gender identity, gender reassignment, sexual orientation, disability, religion or belief, race, and ethnicity. As such we welcome enquiries and applications from everyone. We will be happy discuss with you any workplace adjustments you need in order to be at your best during the recruitment process.