Senior Enterprise Architect

Stefanini Group • Dover, DE

2d • Hybrid

About The Position

Stefanini Group is hiring a Senior Enterprise Architect to design, secure, and modernize systems supporting transit, driver licensing and vehicle registration, and tolling in Dover, Delaware. This hands-on senior role sets technical direction while also building, reviewing, and troubleshooting systems that range from legacy mainframes to real-time cloud platforms. The systems involve public safety, personal data, payment card data, and federal compliance requirements.

The architect supports fixed-route transit, paratransit, and microtransit systems; DMV platforms and services; and toll roadside, back-office, and customer-service systems. The role defines target-state and shared-platform architectures, plans low-risk modernization, designs integrations, and promotes security, availability, and disaster recovery. It also applies systems-engineering practices, shapes cloud and hybrid infrastructure, oversees vendors and system integrators, and communicates technical risks and recommendations to executives and division leaders.

The position is primarily office or hybrid, with occasional travel to division sites, transit facilities, DMV offices, toll facilities, and data centers. After-hours or on-call support may be needed for critical incidents and maintenance windows. The schedule is Monday through Friday, 37.5 hours per week. Interviews are in person.

Requirements

• Bachelor's degree in computer science, information systems, engineering, or a related field; equivalent experience may substitute year for year.
• At least 10 years of progressive IT experience, including at least 5 years in an architecture, senior systems engineering, or technical lead role.
• Demonstrated experience designing and delivering large, integrated, mission-critical systems.
• Hands-on production experience with at least one major cloud platform: AWS, Azure, or Google Cloud.
• Working knowledge of security frameworks such as NIST CSF, NIST SP 800-53, or ISO 27001, and experience implementing their controls.
• Experience with networking, identity and access management, Linux and Windows server environments, and relational databases.
• Experience writing technical requirements and overseeing vendors or system integrators.
• Ability to pass a criminal background check and fingerprinting, including CJIS-level screening.
• Ability to explain technical tradeoffs to non-technical leaders and the public.
• Ability to balance innovation with stability on systems relied on by the public.
• Ability to lead through influence across divisions, vendors, and partner agencies.

Nice To Haves

• Experience in a state DOT, transit agency, tolling authority, DMV, or other public-sector transportation setting.
• Domain knowledge in CAD/AVL and GTFS, paratransit scheduling, AAMVA systems, toll back-office and interoperability, or ITS.
• Experience modernizing mainframe or legacy platforms.
• Experience with API management platforms.
• Experience with PCI DSS environments and payment processing architecture.
• Familiarity with operational technology and ICS security for field devices.
• Knowledge of enterprise, solution, and integration architecture patterns, including microservices, event-driven design, and API-first design.
• Knowledge of zero trust architecture, identity federation such as SAML, privileged access management, and data protection.
• Knowledge of hybrid cloud networking, including VPN, private connectivity, DNS, load balancing, and SD-WAN.
• Knowledge of high availability, disaster recovery, and business continuity design.
• Knowledge of federal and state transportation IT rules, including FTA, FHWA, ADA, DPPA, PCI DSS, and CJIS.
• Skill in producing clear architecture diagrams, standards, and decision records.
• Skill in threat modeling and evaluating security controls.
• Skill in diagnosing complex, multi-system production problems.
• Skill in evaluating vendor solutions for technical merit, risk, and total cost of ownership.

Responsibilities

• Define target-state architectures for division systems and shared platforms.
• Lead design reviews and create architecture decision records, reference architectures, and integration patterns.
• Design high availability and disaster recovery for revenue- and safety-critical systems, including defined RTO/RPO targets.
• Plan phased, low-risk modernization of legacy platforms, such as DMV mainframe workloads.
• Design APIs, event streams, and data integrations across transit, DMV, tolls, and external partners.
• Embed security into architecture, including zero trust, identity and access management, segmentation, and encryption.
• Lead security architecture reviews and align systems with NIST CSF, NIST SP 800-53, PCI DSS, CJIS, DPPA, and state security policies.
• Assess operational technology and roadside system security for toll lanes, onboard transit equipment, and field networks.
• Apply systems-engineering practices across requirements, traceability, interfaces, verification, and validation.
• Follow FHWA Systems Engineering guidance and regional ITS architecture requirements on federally funded projects.
• Define and manage interface control documents between agency systems and vendor platforms.
• Guide integration, performance, failover, and user acceptance testing strategies.
• Shape and execute cloud strategy across AWS, Azure, or GCP, including landing zones and governance.
• Design hybrid architectures connecting on-premises data centers, field devices, and cloud services.
• Promote infrastructure as code, CI/CD, containerization, and automated configuration management.
• Drive cloud cost management, tagging standards, and right-sizing with finance.
• Support FedRAMP and StateRAMP evaluation of SaaS and cloud vendors.
• Review and sometimes write technical requirements for RFPs, and evaluate vendor proposals and architectures.
• Provide technical oversight of system integrators and SaaS providers through delivery and operations.
• Set technical standards and best practices across teams.
• Translate technical risks and options into clear recommendations for executives and division leaders.
• Respond to after-hours incidents on critical systems when needed.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior