Oscar Associates Ltd

Senior Network Engineer | £550p/day (Inside IR35) | 3 days on site in London | 6 months | Arista 7150 and Cisco, Low latency We're looking for an experienced Senior Network Engineer to join a critical network refresh programme supporting financial exchange. Experience working in trading/low latency exchange is a necessity. You'll be responsible for replacing and migrating approximately 60 end of life Arista 7150 and Cisco Switches, working within tightly controlled weekend change windows. Rate: £550p/day (Inside IR35) Location: 3 days on site in London Length: 6 months Key Responsibilities Lead the replacement and migration of approximately 60 Arista 7150 and Cisco Switches Apply and validate customised switch configurations with a high degree of accuracy Manage external connectivity to financial exchanges and Extranet environments Configure and troubleshoot BGP and multicast routing within live trading environments Deliver all migration and change activity with zero downtime Key Experience Required Strong hands-on Arista experience, specifically the Arista 7150 series Experience with Firewalls in complex network environments Strong Extranet connectivity experience Strong production-level BGP and multicast knowledge If this sounds like a good fit, apply now! Senior Network Engineer | £550p/day (Inside IR35) | 3 days on site in London | 6 months | Arista 7150 and Cisco, Low latency Oscar Associates (UK) Limited is acting as an Employment Business in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.

DLP Policy Engineer | £550-£585 per day (Inside IR35) | Fully Remote | Must be comfortable with policy management Our client is looking for an experienced Zscaler DLP Policy Engineer to join a major enterprise security transformation programme. This will be supporting the migration from an existing DLP platform to ZScaler DLP. This is a hands-on engineering role where you'll be responsible for analysing existing DLP policies, designing and building equivalent controls within Zscaler. Key responsibilities: Design, build and maintain DLP policies Review and rationalise existing DLP controls Perform policy testing, validation and troubleshooting throughout the implementation life cycle What we're looking for: Proven experience delivering DLP migrations Excellent DLP policy engineering and policy writing experience Strong understanding of DLP testing, validation and troubleshooting ANY EXPERIENCE WITH SYMANTEC & ZSCALER IS A BONUS! If this sounds like a good fit, apply now as they're interviewing imminently! DLP Policy Engineer | £550-£585 per day (Inside IR35) | Fully Remote | Must be comfortable with policy management Oscar Associates (UK) Limited is acting as an Employment Business in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.

Production Services Specialist II | Remote | Inside IR35 | £60 p/h | 4-Day Week (up to 40 hrs, Rota-Based) | IP Services/Load Balancing & DDI We're looking for an experienced Production Services Specialist II (contract) to support a large-scale IP Services environment. This is an operations-focused role, acting as the technical subject matter expert for network incidents affecting load balancing and DDI (DNS, DHCP, IPAM) infrastructure. You'll manage day-to-day operational support across F5, VMware Avi, and BlueCat platforms, including incident triage, proactive network reviews and disaster recovery testing. You'll also support documentation, runbooks and governance processes, ensuring standards are maintained across the network stack. Involvement in wider Operations projects and initiatives will also be required, working closely with senior engineers, architecture and business stakeholders to ensure smooth, resilient service delivery. This is a remote role, working a 4-day week (up to 40 hours) on a rota basis. Key responsibilities: Provide operational support for F5, VMware Avi and BlueCat (on-prem and Cloud Resolver) infrastructure. Support incident triage, proactive reviews and disaster recovery testing. Maintain documentation, runbooks and adherence to design/governance standards. Coordinate with senior engineers, architecture and business stakeholders. Contribute to Operations projects and infrastructure improvement initiatives. Key skills: 7+ years' experience in network protocols and technologies (DNS, DHCP, SSL/TLS, HTTP/S, SNMP, TCP/IP). Strong knowledge of F5 (LTM/GTM/APM), BlueCat DNS/DHCP/IPAM, and VMware Advanced Load Balancer. Expert troubleshooting ability across complex networking environments. Strong communication and stakeholder management skills. If this sounds like a good fit, apply now! Production Services Specialist II | Remote | Inside IR35 | £60 p/h | 4-Day Week (up to 40 hrs, Rota-Based) | IP Services/Load Balancing & DDI Oscar Associates (UK) Limited is acting as an Employment Business in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.