CrawlJobs Logo

Perimeter Security Senior Build Engineer

https://www.citi.com/ Logo

Citi

Location Icon

Location:
Singapore , Singapore

Category Icon
Category:
IT - Administration

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

Not provided
Save Job
Save Icon
Apply Position

Job Description:

The Perimeter Security Build Engineer will play a crucial role in developing and implementing perimeter security solutions for our organization. This role emphasizes the hands-on deployment, and configuration of security systems at the network's edge, focusing on protecting against external threats. The ideal candidate will possess a strong background in network security, with a particular emphasis on building and implementing robust security infrastructures.

Job Responsibility:

  • Design, build, and deploy perimeter security solutions, including firewalls, intrusion detection systems (IDS), intrusion prevention systems (IPS), and VPNs
  • Implement security measures that effectively safeguard the organization's network periphery
  • Ensure new security solutions are seamlessly integrated into the existing network architecture
  • Understand and manage network routing protocols and configurations
  • Ensure optimal network performance and security through effective routing strategies
  • Troubleshoot routing issues and optimize network routes for security and efficiency
  • Configure security infrastructure for optimal protection and performance
  • Collaborate with network architects and IT teams to ensure alignment of security measures with overall network strategy
  • Document build processes, configurations, and standard operating procedures
  • Ensure compliance with relevant security policies and regulatory standards in all implementation tasks
  • Work closely with various internal teams and security vendors to enhance perimeter security
  • Effectively communicate project statuses, challenges, and achievements to stakeholders

Requirements:

  • Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or related field
  • 4+ years of experience in network security, with a focus on security infrastructure development and implementation
  • Strong familiarity with security technologies, including but not limited to Checkpoint, Palo Alto Networks, and Cisco
  • Knowledge of network protocols, routing, and firewall management
  • Basic Understanding of automation scripting languages such as Python or PowerShell or Ansible is desirable
  • Understanding of Cloud Security is an advantage
  • Relevant certifications are highly desirable, including CompTIA Security+, CCNA, Check Point Certified Admin (CCSA), Palo Alto Networks Certified Network Security Administrator (PCNSA)
  • Excellent technical skills with a strong focus on security infrastructure and problem-solving
  • Ability to manage multiple projects and tasks simultaneously
  • Strong communication and teamwork capabilities
  • Detail-oriented approach with a commitment to high-quality outcomes

Nice to have:

  • Basic Understanding of automation scripting languages such as Python or PowerShell or Ansible is desirable
  • Understanding of Cloud Security is an advantage
  • Relevant certifications are highly desirable, including CompTIA Security+, CCNA, Check Point Certified Admin (CCSA), Palo Alto Networks Certified Network Security Administrator (PCNSA)

Additional Information:

Job Posted:
January 10, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
Icon
Citi - All Job Offers
Job Link Share:
Copy Link Icon
Facebook Icon Twitter Icon LinkedIn Icon

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Perimeter Security Senior Build Engineer

Senior L4 Network Engineer

The Senior L4 Network Engineer at NTT DATA will lead the design and deployment o...
Location
Location
United States of America , Los Angeles
Salary
Salary:
70.00 - 80.00 USD / Hour
nttdata.com Logo
NTT DATA
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Active CCIE (any track
  • Enterprise Infrastructure and/or Security strongly preferred)
  • 10+ years enterprise networking experience, including 3–5+ years leading SD-Access architecture and deployment across multiple sites
  • Proven, exceptional hands-on skills with Cisco routing/switching and Catalyst Center (formerly Cisco DNA Center) for SDA automation and assurance
  • Deep expertise with Cisco ISE (policy, 802.1X, SGT/TrustSec) and Cisco FTD (Firepower) firewalls (threat, access control, NAT/VPN, high availability)
  • Strong experience with Cisco SD-WAN (design, policy/templating, security integration, operationalization)
  • Expert-level knowledge of BGP, EIGRP, OSPF, redistribution, and route-policy design for large enterprises
  • Demonstrated success leading complex, multi-phase migrations and mentoring senior engineers
  • Must reside in the immediate Los Angles metro area and be able to work onsite at client site in Downtown LA
  • Applicants must be legally authorized to work in the United States at the time of application and must not require sponsorship for employment visa status now or in the future
Job Responsibility
Job Responsibility
  • Own end-to-end SD-Access architecture for large, multi-site enterprises: fabric design (control/edge/border), transit options, segmentation (SGTs/TrustSec), identity policy, and integration with WAN and data center
  • Lead Catalyst Center–driven automation: design templates, SDA workflows, network assurance, SWIM, and closed-loop operations aligned to reliability/SLOs
  • Design identity-centric security with ISE: policy sets, authorization profiles, posture, PxGrid integrations, wired/wireless 802.1X/MAB, guest/BYOD, and scalable group policies
  • Engineer secure edge and campus perimeters: Cisco FTD/Firepower policy design, NAT, VPN, IDS/IPS, SSL decryption strategy, and high availability
  • Architect SD-WAN underlay/overlay: transport independence, application-aware routing, DIA/Cloud on-ramp, security integration, and multi-region scale
  • Expert routing at scale: BGP (policy, route reflectors, communities), OSPF, EIGRP, ECMP, redistribution strategies, route filtering, summarization, and IPv6 planning
  • Drive modernization roadmaps: brownfield to SDA migration, hierarchical campus design, QoS, multicast, wireless controller (Catalyst 9800) alignment, and resiliency patterns
  • Deliver hands-on build and escalation leadership: lab validation, pilot, phased rollout, cutover plans, MOPs, change windows, and root-cause analysis for P1/P2 incidents
  • Mentor and uplift engineering teams: design reviews, standards, runbooks, and enablement sessions for operations and field engineers
  • Stakeholder leadership: collaborate with security, EUC, cloud, and application teams
What we offer
What we offer
  • medical, dental, and vision insurance, flexible spending or health savings account, life, and AD&D insurance, short-and long-term disability coverage, paid time off, employee assistance, participation in a 401k program with company match
  • Fulltime
Read More
Arrow Right

Principal Network Architect

As a Principal Network Architect at NTT DATA, you will lead the design and imple...
Location
Location
United States of America , Los Angeles
Salary
Salary:
75.00 - 85.00 USD / Hour
nttdata.com Logo
NTT DATA
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Active CCIE (any track
  • Enterprise Infrastructure and/or Security strongly preferred)
  • 10+ years enterprise networking experience, including 3–5+ years leading SD-Access architecture and deployment across multiple sites
  • Proven, exceptional hands-on skills with Cisco routing/switching and Catalyst Center (formerly Cisco DNA Center) for SDA automation and assurance
  • Deep expertise with Cisco ISE (policy, 802.1X, SGT/TrustSec) and Cisco FTD (Firepower) firewalls (threat, access control, NAT/VPN, high availability)
  • Strong experience with Cisco SD-WAN (design, policy/templating, security integration, operationalization)
  • Expert-level knowledge of BGP, EIGRP, OSPF, redistribution, and route-policy design for large enterprises
  • Demonstrated success leading complex, multi-phase migrations and mentoring senior engineers
  • Must reside in the immediate Los Angeles metro area and be able to work onsite at client site in Downtown LA
  • Applicants must be legally authorized to work in the United States at the time of application and must not require sponsorship for employment visa status now or in the future
Job Responsibility
Job Responsibility
  • Own end-to-end SD-Access architecture for large, multi-site enterprises: fabric design (control/edge/border), transit options, segmentation (SGTs/TrustSec), identity policy, and integration with WAN and data center
  • Lead Catalyst Center–driven automation: design templates, SDA workflows, network assurance, SWIM, and closed-loop operations aligned to reliability/SLOs
  • Design identity-centric security with ISE: policy sets, authorization profiles, posture, PxGrid integrations, wired/wireless 802.1X/MAB, guest/BYOD, and scalable group policies
  • Engineer secure edge and campus perimeters: Cisco FTD/Firepower policy design, NAT, VPN, IDS/IPS, SSL decryption strategy, and high availability
  • Architect SD-WAN underlay/overlay: transport independence, application-aware routing, DIA/Cloud on-ramp, security integration, and multi-region scale
  • Expert routing at scale: BGP (policy, route reflectors, communities), OSPF, EIGRP, ECMP, redistribution strategies, route filtering, summarization, and IPv6 planning
  • Drive modernization roadmaps: brownfield to SDA migration, hierarchical campus design, QoS, multicast, wireless controller (Catalyst 9800) alignment, and resiliency patterns
  • Deliver hands-on build and escalation leadership: lab validation, pilot, phased rollout, cutover plans, MOPs, change windows, and root-cause analysis for P1/P2 incidents
  • Mentor and uplift engineering teams: design reviews, standards, runbooks, and enablement sessions for operations and field engineers
  • Stakeholder leadership: collaborate with security, EUC, cloud, and application teams
What we offer
What we offer
  • Company benefits may include medical, dental, and vision insurance, flexible spending or health savings account, life, and AD&D insurance, short-and long-term disability coverage, paid time off, employee assistance, participation in a 401k program with company match, and additional voluntary or legally required benefits
  • Fulltime
Read More
Arrow Right

Senior Network Engineer

Bumble is seeking a Network Engineer to maintain a stable, predictable, controll...
Location
Location
United Kingdom , London
Salary
Salary:
Not provided
bumble.com Logo
Bumble Inc.
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3+ years of hands-on Linux systems engineering experience (preferably rpm-based distributions such as RHEL or CentOS)
  • Strong diagnostic and troubleshooting skills spanning application performance, traffic-delivery issues, and complex multi-layer networking challenges
  • Deep understanding of networking across L1–L4 and L7, including copper/optics, Ethernet, and static/dynamic routing
  • Production experience with IS-IS and BGP (OSPF familiarity beneficial)
  • Extensive hands-on experience with Juniper MX, SRX, and QFX devices
  • Practical experience implementing and supporting EVPN-VXLAN architectures
  • Strong background in load balancing (CARP, IPVS, userspace, or enterprise solutions) and packet filtering
  • Experience building and supporting cloud networking architectures (VPC structures, virtual routing, firewalling, hybrid connectivity, etc.)
  • Proficiency with 802.1X, 802.1Q, and bonding/teaming at both the server and network hardware layers
  • Strong diagnostic capabilities with IPv4, ICMP, TCP, UDP, DHCP, and DNS (IPv6 is a plus)
Job Responsibility
Job Responsibility
  • Support and evolve Bumble’s global network infrastructure across multiple data centres and offices, including diagnostics of network subsystems within Linux servers (primarily CentOS/RHEL)
  • Improve network reliability and operational efficiency through configuration management, automation, and continuous optimisation of BAU tasks
  • Contribute to the design, implementation, and operation of cloud networking as we migrate a significant portion of our workloads into cloud environments
  • Collaborate closely with Systems Engineering and SRE teams, sharing networking expertise, participating in design reviews, and shaping resilient, secure platform architectures
  • Manage relationships with global service providers, including IP transit operators, to ensure optimal performance, availability, and accountability
  • Own IP address management, including subnet allocation, VLAN design, and maintaining accurate documentation
  • Strengthen Bumble’s security posture by contributing to perimeter defence, segmentation strategy, and proactive threat prevention
  • Participate in the on-call rota to maintain platform availability and support timely incident response
Read More
Arrow Right

Sales Operation Manager

As a Sales Operations Manager, you will contribute to the development and perfor...
Location
Location
China , Shanghai
Salary
Salary:
Not provided
amaris.com Logo
Amaris Consulting
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Over 10 years in sales operations or related senior roles in Engineering or Technology consulting service
  • Strong experience in Sales, Management, and Business Development
  • Fluent in English
  • Chinese as mother tongue
  • Proven leadership and team management skills
  • Excellent communication and stakeholder engagement abilities
  • Adaptable to dynamic business environments in Shanghai
  • Bachelor’s degree in Business, Management, or related field
Job Responsibility
Job Responsibility
  • Contribute to achieving the business plan objectives within the assigned perimeter, in terms of both revenue and margin
  • Implement action plans to reach commercial targets and develop the client portfolio (account strategies, RFP management, commercial agreements)
  • Identify, qualify, and report business opportunities in priority markets
  • Support the development of business opportunities across the client’s various entities and geographies through cross-selling initiatives and coordination with the Group’s brands
  • Monitor the evolution of delivery and invoicing models within your scope
  • Support the transformation and optimization of delivery and invoicing processes in alignment with internal guidelines
  • Strengthen the level of partnership with key client accounts
  • Build and maintain long-term, trust-based relationships with client stakeholders
  • Establish or reinforce a high level of proximity with C-level decision makers
  • Represent the Group externally and act as a key ambassador in your interactions
What we offer
What we offer
  • An international community bringing together 110+ different nationalities
  • An environment where trust has a central place: 70% of our key leaders started their careers at the first level of responsibility
  • A robust training system with our internal Academy and 250+ available modules
  • A vibrant workplace that frequently gathers for internal events (afterworks, team buildings, etc.)
  • Strong commitments to CSR, notably through participation in our WeCare Together program
  • Fulltime
Read More
Arrow Right
New

Forklift Driver – Shipping/Puller

Pull materials/doors and properly inspect, stack and stage for loading. Reads or...
Location
Location
United States , Lawrenceville
Salary
Salary:
22.00 USD / Hour
owenscorning.com Logo
Owens Corning
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Forklift knowledge and safety procedures
  • MasterPak and scanners in MasterPak
  • Order tracking process and documents
  • Door and core types
  • Product locations
  • Forklift operating skills to load/unload, lift, move, place, stack raw materials and doors, navigate throughout plant
  • Perform safety procedures
  • Handling/stacking requirements
  • Read/interpret schedules/tickets/shipping documents
  • Sorts product to maximize trailer space
Job Responsibility
Job Responsibility
  • Pull materials/doors and properly inspect, stack and stage for loading
  • Reads order, gathers ordered materials/doors manually or with forklift, sorts for proper stacking, applies place cards, stages for loading
  • Other duties as assigned
What we offer
What we offer
  • Free Medical Premiums – eligible for free or reduced cost premium
  • Dental, Vision, Life, & Accidental Insurance
  • Paid Parental Leave and Adoption Benefits
  • Paid Holidays - ability to earn additional PTO each month
  • 401(k) with Company Match
  • Educational Assistance Program
  • Advancement Opportunities - we promote from within the company
  • Fulltime
Read More
Arrow Right
New

Accounts Receivable Analyst

We are looking for an Accounts Receivable Analyst to join our team in American F...
Location
Location
United States , American Fork
Salary
Salary:
Not provided
https://www.roberthalf.com Logo
Robert Half
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Proven experience in accounts receivable processes, including invoicing and collections
  • Strong knowledge of commercial collections practices and strategies
  • Proficiency in cash applications and financial record-keeping
  • Familiarity with billing functions and related compliance requirements
  • Excellent analytical skills to track and interpret cash activity data
  • Effective communication and problem-solving abilities for resolving payment issues
  • Ability to work collaboratively with cross-functional teams
  • High attention to detail and accuracy in financial reporting and documentation
Job Responsibility
Job Responsibility
  • Manage and monitor accounts receivable processes to ensure timely and accurate invoicing
  • Handle commercial collections by maintaining effective communication with clients and resolving outstanding payment issues
  • Process cash applications efficiently to maintain accurate financial records
  • Oversee billing functions, ensuring compliance with company policies and procedures
  • Track and analyze cash activity to identify trends and discrepancies
  • Collaborate with internal teams to streamline financial workflows and improve efficiency
  • Prepare detailed reports on receivables and collections for review by management
  • Ensure adherence to financial regulations and company standards in all transactions
  • Address customer inquiries related to invoices and payments promptly and professionally
What we offer
What we offer
  • medical, vision, dental, and life and disability insurance
  • eligible to enroll in our company 401(k) plan
Read More
Arrow Right
New

Digital Manufacturing Transformation Lead - Technical Innovation

Within the Digital Manufacturing Transformation (DMT) team, the role of the DMT ...
Location
Location
United States , Granville; Toledo
Salary
Salary:
Not provided
owenscorning.com Logo
Owens Corning
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's degree in engineering or relevant field
  • 5+ years in manufacturing with hands-on process controls, quality systems or equipment implementation experience
  • 3+ years of program/project leadership using formal methodologies, portfolio practices, and tools
  • Working knowledge of Manufacturing Controls and OT Systems and enterprise digital systems
  • Ability to translate business requirements into technical options and measurable value
  • Proven success leading medium-to-large, cross-functional/global initiatives with third-party vendors and partners
  • Strong stakeholder management, and organizational skills
  • adept at prioritizing in fast-paced environments
  • Curiosity, service mindset, and inventive flexibility
  • self-directed learner matching emerging technologies to operational needs
Job Responsibility
Job Responsibility
  • Build relationships within the Global Information Services (GIS) organization, cross-functionally, and with key stakeholders
  • ensure effective contact to remain aligned with functional objectives
  • Understand the strategic direction of the company’s businesses and execute functional strategies to support and enhance business results
  • be knowledgeable of the project work that supports this direction and implications for the business
  • Understands the relationships with stakeholders and understands what it takes to ensure their success
  • Knows what best-in-class organizations do and obtain outside-in insights to understand and then apply to positively impact Owens Corning
  • Build transparent partnerships across GIS, Businesses, CoE, S&T and operations
  • keep status, priorities, and outcomes visible
  • Work closely to recognize analogous workstreams elsewhere in the organization
  • Leverage business partnerships to prioritize workstreams related to PoCs or pilots within the Digital Manufacturing Transformation portfolio
Read More
Arrow Right
New

Accounts Payable Clerk

We are looking for a detail-oriented Accounts Payable Clerk to join our team in ...
Location
Location
United States , Henrietta
Salary
Salary:
Not provided
https://www.roberthalf.com Logo
Robert Half
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum of 2 years of experience in accounts payable or related roles
  • Proficiency in QuickBooks and Microsoft Excel for financial management and reporting
  • Strong attention to detail and organizational skills to manage multiple tasks effectively
  • Ability to reconcile accounts and ensure accuracy in financial records
  • Associate degree in accounting or a related field is preferred
  • Excellent communication skills to interact with vendors and internal teams
  • Adaptability to work both on-site and occasionally from home, as needed
  • Commitment to maintaining confidentiality and compliance with company policies
Job Responsibility
Job Responsibility
  • Process accounts payable invoices by entering them into the accounting system, matching purchase orders with receipts, and obtaining necessary approvals
  • Categorize expenses accurately and ensure proper coding for financial reporting
  • Perform monthly reconciliations of both the general ledger and vendor statements to maintain financial accuracy
  • Prepare weekly check runs, review them with the supervisor, and ensure timely processing of payments
  • Assist in the preparation of the trial balance and contribute to month-end closing activities
  • Support accounts payable functions across various locations, ensuring consistency and compliance
  • Collaborate with the controller to address discrepancies and maintain efficient workflows
  • Utilize QuickBooks and Excel to manage data and generate reports as needed
What we offer
What we offer
  • medical, vision, dental, and life and disability insurance
  • eligible to enroll in our company 401(k) plan
  • free online training
Read More
Arrow Right
Jobs by Category
Art and Entertainment Jobs Banking Jobs Call Center Jobs Construction Jobs Consulting Jobs Customer Service Jobs Education Jobs Energy Jobs Finance Jobs Gastronomy Jobs Health and Beauty Jobs Hospitality and Tourism Jobs Human Resources Jobs Insurance Jobs IT - Administration Jobs IT - Software Development Jobs Legal Jobs Logistics Jobs Manufacturing Jobs Marketing, Digital Marketing, SEO, SEM Jobs Media Jobs Nursing Jobs Office Administration Jobs Pharmacy Jobs Physical Work Jobs Public Relations Jobs Public Sector Jobs Purchasing Jobs Quality Control Jobs Real Estate Jobs Research and Development Jobs Sales Jobs
Job Positions Jobs by Country
United States Jobs United Kingdom Jobs India Jobs Canada Jobs Australia Jobs Germany Jobs Ireland Jobs Poland Jobs
Company
Blog About Us Contact
Follow Us
Facebook
X (Twitter)
LinkedIn
Instagram
CrawlJobs Group
ITFlashcards AllDevBlogs
© 2026 CrawlJobs Ltd. All Rights Reserved
Terms & Conditions Privacy Policy