Infrastructure Engineer - Network Specialist
Role details
Job location
Tech stack
Job description
We are currently recruiting an exciting opportunity on our IT Infrastructure team. As we continue our IT transformation journey, we are looking to bring in a Network Specialist who will be able to lead the engineering and design of our hybrid infrastructure, championing cyber-secure design principles and drive the business on this journey.
The Role
This role will involve engineering, designing, monitoring, and supporting our hybrid network infrastructure, encompassing both core data centre and cloud environments. The successful individual will specialise in strategic network engineering and LLD ownership, ensuring the infrastructure runs smoothly, securely, and efficiently to support the organisations goals and objectives.
Responsibilities include:
-
Design, and deploy end-to-end network solutions, including LANs, WANs, WLAN and SD-WAN Solutions, both on-premise and within cloud infrastructure
-
Serve as the subject matter expert for all Azure networking components, leading integration, security, and governance efforts.
-
Drive cross-functional collaboration, partnering closely with architecture, cybersecurity, and change delivery teams to ensure network designs and implementations are secure, compliant, and fully aligned with business and technical objectives.
-
Drive network automation initiatives, identifying opportunities and implementing solutions (e.g. Ansible) to streamline provisioning, management, and monitoring.
-
Manage and monitor networks, servers, and systems to ensure optimal performance. This includes troubleshooting network issues and performing regular maintenance and upgrades
-
Lead network security design and configuration to protect the organisation's data and systems, including setting up firewalls, VPNs, policy-based routing, and zero-trust network security principles.
-
Translating High-Level Designs (HLDs) and business requirements into practical conceptual models, while taking full ownership for the creation, documentation, and implementation of detailed Low-Level Designs (LLDs)
-
Proactively managing the capacity and performance of the hybrid network infrastructure, with a focus on Data Center fabric scalability, and raising strategic design proposals for continuous improvement in line with business demands.
-
Owning the network infrastructure lifecycle strategy, including vulnerability management, patching governance, and maintenance planning.
-
Providing where necessary out of hours support of the IT systems.
Person Specification
To be successful in this role you will need to have advanced knowledge of network configuration and protocols alongside strong experience designing and managing branch office connectivity using VPNs, MPLS or SD-WAN solutions.
Due to this the role requires:
-
A minimum of 5 years in a network infrastructure engineering role, ideally within Financial Services.
-
Advanced experience with Azure Virtual Network (VNet) design (including subnetting, peering, and NSGs).
-
Extensive hands-on experience designing and managing Core and Top-of-Rack (ToR) switching environments, including resilience technologies like VSX or other MC-LAG protocols.
-
Proven experience implementing network access control (NAC) and zero-trust principles.
-
Working knowledge of configuration management and orchestration tools such as Ansible.
We offer a competitive remuneration package, including company discretionary bonus, excellent pension contributions, an attractive staff share scheme, BUPA health insurance, buying and selling of annual leave and sponsorship of relevant professional qualifications.
The role is based in our central London office, working a minimum of two days a week in the office and three days a week from home.
About Us
Transact is a leading UK investment wrap platform for financial advisers and their clients. Our culture is collaborative, inclusive and open-minded. WE work hard to continually challenge the way we do things to maintain our market leading status.
As a customer-centric and client focused business, we put our clients, like Mrs Miggins, at the heart of everything we do.
Our platform enables clients and their advisers to manage their financial portfolio in one single online place, and is supported by unrivalled personal service. Our goal is to make all aspects of portfolio management as easy and efficient as possible for everyone involved, through the features we develop, our integrations with other systems, and the support we provide.
Our purpose: We enable the Miggins family and their adviser to hold their investments on a single platform across wrappers. We provide custody, tax wrapping, trading and reporting.
Our strategy: We make financial planning easier for advisers by delivering great service. Our platform helps advisers grow revenues and reduce risk and cost in their business. We will always have control of our technology, wrappers and service.
Our values: We do the right thing for customers, advisers, staff, shareholders, suppliers and the wider community.
Transact's parent company, IntegraFin Holdings plc, is listed on the London Stock Exchange and is a constituent of the FTSE 250 index. Established in 2000, today we have over £74.2 billion of funds under direction on behalf of over 246,000 investor clients (as at September 2025).
Transact is a part of the IHP Group which also includes Time4Advice. The IHP Group exists to make financial planning easier for clients and advisers through the provision of financial adviser software and personal service.
Equal Opportunities
We provide a diverse and inclusive workplace and ensure that all of our staff respect and understand individual differences. We are an equal opportunities employer and positively encourage applications from suitably qualified and eligible candidates regardless of age, disability, gender reassignment, marital or civil partner status, pregnancy or maternity, race, religion or belief, sex or sexual orientation.
Requirements
To be successful in this role you will need to have advanced knowledge of network configuration and protocols alongside strong experience designing and managing branch office connectivity using VPNs, MPLS or SD-WAN solutions.
Due to this the role requires:
-
A minimum of 5 years in a network infrastructure engineering role, ideally within Financial Services.
-
Advanced experience with Azure Virtual Network (VNet) design (including subnetting, peering, and NSGs).
-
Extensive hands-on experience designing and managing Core and Top-of-Rack (ToR) switching environments, including resilience technologies like VSX or other MC-LAG protocols.
-
Proven experience implementing network access control (NAC) and zero-trust principles.
-
Working knowledge of configuration management and orchestration tools such as Ansible.
Benefits & conditions
We offer a competitive remuneration package, including company discretionary bonus, excellent pension contributions, an attractive staff share scheme, BUPA health insurance, buying and selling of annual leave and sponsorship of relevant professional qualifications.
