21 senior network engineering lead jobs found

Who are OnCommerce?   OnCommerce is a global selling platform that powers a growing network of retail channels, including: OnBuy - The only marketplace in the world to give customers instant Cashback on everything easyShop - An all-new marketplace created in collaboration with the easy ® family of brands Comet - The iconic UK tech brand making its return later this year   OnCommerce is growing fast, launching new brands and scaling to power the future of ecommerce.   Be Part of the Story OnCommerce is constantly evolving. Everyone here plays a hands-on role in shaping what comes next, building brands that make an impact across global markets. There's no red tape or rigid corporate structure; just smart people taking ownership and figuring things out as we build something big together. The pace is fast, priorities shift, things aren't always perfectly set up, and you'll often need to get stuck in and solve problems. But if you...

Location: Remote / Hybrid Employment Type: Contractor  About ifndautoparts  ifndautoparts (I Find Auto Parts) is a rapidly growing online marketplace dedicated exclusively to automotive parts. Our mission is to make finding and selling automotive parts easier, quicker, and smarter by connecting buyers and sellers through innovative technology. As a start-up, ifndautoparts is a family-owned and founder-led company. We operate with a lean, highly collaborative structure and work closely with specialist contractors and development partners to deliver projects and scale the platform. As we expand our business seller network, we are looking for an experienced Senior Integration Engineer to help businesses connect their inventory systems directly to the ifndautoparts marketplace. This is a highly technical, hands-on role focused on helping business sellers connect and synchronise their inventory with the ifndautoparts marketplace. You will work...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

400-500 Outside IR35 City London Province Greater London Country United Kingdom Postal Code EC1A Job Description About Scrumconnect Consulting Scrumconnect Consulting is a leading UK digital and technology consultancy specialising in delivering impactful, user-centred services for the public sector. We work with central government departments, agencies, and local authorities to build digital products and services that improve outcomes for citizens. With a team of engineers, architects, delivery professionals, and designers, we bring deep expertise in digital transformation, cloud technologies, and agile delivery. We are committed to engineering excellence, innovation, and creating an inclusive environment where everyone can thrive. Role Overview We are seeking an experienced Azure Solution Architect to design, architect, and deliver scalable, secure, and high-performance cloud data solutions...

Location: Remote / Hybrid Employment Type: Contractor  About ifndautoparts  ifndautoparts (I Find Auto Parts) is a rapidly growing online marketplace dedicated exclusively to automotive parts. Our mission is to make finding and selling automotive parts easier, quicker, and smarter by connecting buyers and sellers through innovative technology. As a start-up, ifndautoparts is a family-owned and founder-led company. We operate with a lean, highly collaborative structure and work closely with specialist contractors and development partners to deliver projects and scale the platform. As we expand our business seller network, we are looking for an experienced Senior Integration Engineer to help businesses connect their inventory systems directly to the ifndautoparts marketplace. This is a highly technical, hands-on role focused on helping business sellers connect and synchronise their inventory with the ifndautoparts marketplace. You will work...

ID: 59907   1 Opening BRISTOL       Role description Senior Data Center Engineer Bristol, UK – Onsite Contractor Inside IR35 or 6 month Fixed Term Employment Contract Infrequent Travel Required to Israel (travel expenses paid)   Are you a hands-on data center expert who thrives on solving complex infrastructure challenges? We’re looking for a Senior Data Center Engineer to lead large-scale, enterprise-grade data center initiatives, driving projects from initial assessment through to full operational readiness. Based in Bristol, this is a high-impact role where you’ll be at the forefront of data center transformation, shaping resilient, scalable environments while partnering directly with clients and senior stakeholders.   What you’ll be doing: Own end-to-end data center transformation programmes: Lead...

Azure Solution Architect (SC Cleared) London, United Kingdom | Posted on 05/06/2026 About Scrumconnect Consulting Scrumconnect Consulting  is a leading UK digital and technology consultancy specialising in delivering impactful, user-centred services for the public sector. We work with central government departments, agencies, and local authorities to build digital products and services that improve outcomes for citizens. With a team of engineers, architects, delivery professionals, and designers, we bring deep expertise in digital transformation, cloud technologies, and agile delivery. We are committed to engineering excellence, innovation, and creating an inclusive environment where everyone can thrive. Role Overview We are seeking an experienced  Azure Solution Architect  to design, architect, and deliver scalable, secure, and high-performance cloud data solutions on Microsoft Azure. This role requires deep expertise in ...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Job Title: Senior Firewall & Network Security Engineer Location: London Position Type: Contract Overview We are seeking an experienced Senior Firewall & Network Security Engineer with deep expertise in the Fortinet ecosystem to join our infrastructure security team. In this role, you will design, manage, and continuously improve enterprise-grade firewall infrastructure, lead firmware upgrade cycles, drive automation initiatives, and serve as the subject-matter expert on FortiGate platforms — including the 1500D and 1800F series. You will work cross-functionally with network, cloud, and compliance teams, operating within ITIL-aligned change management processes. Key responsibilities: Own end-to-end management of enterprise FortiGate firewalls (1000-series and above) across production and non-production environments, including VDOM configuration, HA setup, and policy routing. Plan and execute FortiOS major-version upgrade paths (e.g., 6.x → 7.x) in production,...

Who Are We? Xcelirate develops technologically-advanced platforms which are accessed by thousands of users every minute! We are proud to offer a workplace where the sharpest developers come together to strategically plan and swiftly execute practices which see us maintain our existing market dominance and attain global expansion. We owe our success to our customers who have seen us grow across a decade, and our talented team who have made that growth possible!   What are we looking for? You're a Principal-Level Engineer first. The tech lead title is almost incidental. It just means you're the person the team orbits around, because that's what happens naturally when you're the one who understands the system most deeply and keeps the clearest head under pressure. The 10% that's people management fits inside your engineering work, not alongside it. You hire, you steer, you unblock, but you do it the way a strong engineer does everything: with good...

Job Description Who we’re looking for We are looking for an experienced Snowflake Platform Engineer to join our Data Platform team. In this role you will be responsible for the day-to-day operation, security, and evolution of our Snowflake data platform. You will ensure the platform remains secure, performant, and available to data consumers across the business, while partnering closely with data engineering, analytics, and security teams. This is a hands-on technical role that requires deep Snowflake expertise combined with a strong appreciation for governance, access control, and cloud infrastructure. You will act as the subject-matter expert for all things Snowflake and be a key point of contact for platform-related queries, incidents, and strategic decisions. Enterprise Data Engineering sits within Global Technology. Our recent focus has been helping Schroders embed ESG data throughout our investment processes as part of the Global Sustainability initiative. While that...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission At ByDesign Secure, we believe that world‑class security shouldn't be an afterthought— it should be the foundation. We are an independent, outputs‑based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross‑government secure IT system. This is an exciting opportunity to contribute to the design and consumption of a private cloud environment from the ground up and help modernise the end‑user services that support national decision‑making. We don’t believe in “billing by the hour” or rigid hierarchies; we are a lean, expert team focused on delivering high‑impact outcomes. If you are a self‑starter who thrives on autonomy and wants to see your analysis, insights, and business decisions shape the future of sovereign...

On behalf of Network Rail , we are looking for a Project Planners x2 for 6 month contracts possible extension which are hybrid roles so does require up to 3 days a week in either the Milton Keynes or London Waterloo office locations Network Rail is at the heart of revitalising Britain's railway. From Crossrail - Europe's largest civil engineering project - to investment in world-class stations and major programmes of electrification, we are involved in some of the most ambitious and diverse ventures that this country has ever seen. We at Network Rail are dedicated to becoming one of Britain 's best employers and believe this starts with placing the candidate at the heart of everything we do! The GBR Leadership Academy exists to equip current and future railway leaders with the knowledge, skills and tools to lead and deliver an integrated industry where track and train are brought together after decades of fragmentation. The academy will close critical...

Job Summary We are seeking a highly skilled Senior Network Security Engineer to support a strategic Network Security Transformation Program for a leading Insurance customer. The successful candidate will be responsible for designing, implementing, and supporting enterprise network security solutions with a strong focus on Zscaler, Fortinet, and Lumio technologies. This is a hands-on engineering role requiring deep technical expertise in network security operations, security architecture, Firewall management, Zero Trust access, cloud-delivered security, and network visibility platforms. Experience with AI is essential. The ideal candidate will have experience working in large enterprise environments and be comfortable driving security improvements across both traditional and modern network infrastructures. Key Responsibilities Design, implement, and maintain enterprise network security solutions. Engineer and support Zscaler Internet Access (ZIA) and Zscaler...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission At ByDesign Secure, we believe that world‑class security shouldn't be an afterthought— it should be the foundation. We are an independent, outputs‑based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we are working on a landmark transformation of a cross‑government secure IT system. This is an exciting opportunity to contribute to the design and consumption of a private cloud environment from the ground up and help modernise the end‑user services that support national decision‑making. We don’t believe in “billing by the hour” or rigid hierarchies; we are a lean, expert team focused on delivering high‑impact outcomes. If you are a self‑starter who thrives on autonomy and wants to see your analysis, insights, and business decisions shape the...

Opening: Join the Mission At ByDesign Secure, we believe that world‑class security should not be an afterthought—it should be the foundation. We are an independent, outputs‑based consultancy delivering some of the UK public sector’s most complex and sensitive security‑critical systems. We are currently supporting a landmark, cross‑government secure IT transformation, architecting private cloud environments from the ground up and modernising end‑user services that underpin national decision‑making. Our model prioritises impact, autonomy, and technical excellence over hierarchy and utilisation. This is an opportunity for a Principal Security Architect to shape not only individual solutions, but the security posture, architectural standards, and strategic direction of nationally significant programmes. About the Opportunity As a Principal Security Architect, you will operate at the highest technical and strategic level within ByDesign Secure. You will...

Job Summary We are seeking a highly skilled Senior Network Security Engineer to support a strategic Network Security Transformation Program for a leading Insurance customer. The successful candidate will be responsible for designing, implementing, and supporting enterprise network security solutions with a strong focus on Zscaler, Fortinet, and Lumio technologies. This is a hands-on engineering role requiring deep technical expertise in network security operations, security architecture, Firewall management, Zero Trust access, cloud-delivered security, and network visibility platforms. The ideal candidate will have experience working in large enterprise environments and be comfortable driving security improvements across both traditional and modern network infrastructures. Key Responsibilities Design, implement, and maintain enterprise network security solutions. Engineer and support Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA) environments....

Job Description Freelance Apprenticeship Assessment Assessor Location: Remote with travel for assessments Salary: up to £250 per day Line management responsibilities: No   Overview   Training Qualifications UK (TQUK) is the UKs fastest-growing awarding organisation and a market-leading assessment organisation. We partner with more than 500 schools, colleges, universities, and training providers worldwide, supporting over 150,000 learners each year through qualifications, endorsements, and apprenticeships.   Our success lies in doing things differently, placing innovation, integrity, and quality at the heart of everything we do.   The role of a Freelance Apprenticeship Assessment Assessor is to provide independent, fair, reliable, and consistent assessment services to Training Qualifications UK customers working with Apprenticeship Standards. Apprenticeship Assessment Assessors are required to use assessment...

Role: AI Data Architect (Knowledge Engineer) Location: London Duration: Hybrid 6 months Key Responsibilities Must have solid experience in developing taxonomies, ontologies, and semantic data structures. Strong experience in physical migrations - firm data into new information structures and meta data models. Able to map information architecture to new operating models. Good exposure to meta data generated into documents while going through the process. Define metadata standards and governance frameworks. Support Power BI data models, reporting structures, and data flows Engage with stakeholders to translate business requirements into scalable data structures Experience working in Private Equity, Banking, Financial Services, Insurance or Fast-paced, transformation-led environments. Desirable Skills: Experience supporting AI or machine learning initiatives. Structure data for AI, reporting, analytics, and operational use....

Opening: Join the Mission At ByDesign Secure, we believe that world‑class security should not be an afterthought—it should be the foundation. We are an independent, outputs‑based consultancy delivering some of the UK public sector’s most complex and sensitive security‑critical systems. We are currently supporting a landmark, cross‑government secure IT transformation, architecting private cloud environments from the ground up and modernising end‑user services that underpin national decision‑making. Our model prioritises impact, autonomy, and technical excellence over hierarchy and utilisation. This is an opportunity for a Principal Security Architect to shape not only individual solutions, but the security posture, architectural standards, and strategic direction of nationally significant programmes. About the Opportunity As a Principal Security Architect, you will operate at the highest technical and strategic level within ByDesign Secure. You will...