Senior Pre-Sales Infrastructure/Network Design Engineer

Apex Systems; New York (NY); Hybrid; USD 124,000 - 131,000; Full time

Benefits offered by this job

ESPP

401K program

HSA (HDHP)

EAP with counseling

Certification discounts

Job summary

Apex Systems is seeking a Senior Pre-Sales Infrastructure/Network Design Engineer to drive client connectivity initiatives from design through onboarding. The role requires deep expertise in network and extranet design, translating requirements into secure architecture, and communicating complex concepts to clients.

You will create detailed designs, lead discovery meetings, and document network flows across firewalls, VPNs, load balancers, and routers.

Qualifications

• Bachelor’s degree in Engineering, Computer Science, or related field.
• Ten+ years of experience in network engineering or infrastructure solutions architecture.
• Proficiency in Visio and PowerPoint for designs and documentation.

Responsibilities

• Develop client-specific infrastructure designs using approved architectures.
• Gather requirements with clients and internal teams to finalize end-to-end designs.
• Create high-quality technical documentation and diagrams.
• Analyze application flows across network infrastructure including firewalls and load balancers.
• Coordinate implementation with network engineering teams and verify against designs.

Skills

Network design

Extranet design

VPNs

Firewalls & load balancers

Technical documentation

Education

Bachelor's degree in Engineering/CS

Tools

Visio

PowerPoint

Job description

# Senior Pre-Sales Infrastructure/Network Design EngineerApply**Job#: 3055443****Job Description:**Senior Pre-Sales Infrastructure/Network Design Engineer**Location:** New York, NY or Lake Mary, FL **(Must be able to work onsite 3 days per week.)****Length:** 6+ month Assignment**Pay Range:** $90 - $95/hour W2Role OverviewAn established organization requires a Senior Pre-Sales Infrastructure/Network Design Engineer to drive client connectivity initiatives within the Infrastructure Platform division. This client-facing role functions as a technical Subject Matter Expert, leading the design of client-specific connectivity solutions and providing technical oversight throughout the onboarding lifecycle. The successful candidate will possess strong expertise in network and extranet design, translating client requirements into secure architecture while demonstrating how application traffic traverses firewalls, load balancers, and routing infrastructure.Key Responsibilities* Develop client-specific infrastructure and connectivity designs using approved standard architectures, identifying and routing exceptions for further review.* Partner with external clients, application teams, service owners, and internal infrastructure teams to gather requirements and establish end-to-end technical designs.* Lead technical discovery and kickoff discussions to explain available design options and obtain client agreement.* Create and maintain high-quality technical documentation, including standardized PowerPoint presentations and precise Visio network diagrams.* Analyze and document application flows across network infrastructure, including private extranet connections, firewalls, load balancers, and routers.* Coordinate implementation activities with network engineering teams responsible for direct hardware and device configuration.* Validate implementations against approved designs and collaborate with clients on connectivity testing and troubleshooting.* Support strategic connectivity work related to tokenization initiatives and broader infrastructure modernization efforts.* Manage a fast-paced portfolio of concurrent client onboarding projects varying in complexity and duration.Required Qualifications**Education:** Bachelor’s degree in Engineering, Computer Science, or a related technical field.**Experience:** Ten or more years of experience in network engineering, infrastructure engineering, or technical solutions architecture. Flexible consideration will be given to candidates demonstrating equivalent depth in client-facing solution design.**Technical Skills:** Deep understanding of network engineering principles, extranet technology, DMZs, private client connectivity models, VPNs, file transfers, and application traffic flows through firewalls, load balancers, and routers. Proficiency in creating technical design documentation using Visio and PowerPoint is required.Preferred Qualifications* Prior experience in a pre-sales engineering, solutions architecture, or client solutions architect capacity.* Experience within securities, financial services, fintech, or other highly regulated technology environments.* Familiarity with network diagnostic and observability tools such as Splunk or Forward Networks.* Proven ability to manage multiple client projects simultaneously while maintaining clear and structured communications. *Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.**Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy**Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Everforth Apex team member can provide.**Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.**If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [e-mail] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.**UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.***Employee Type:** Contract**Location:** New York, NY, US**Job Type:****Date Posted:** October 28, 2026**Pay Range:** $101 - $101 per hour