6 of 6 Performance Engineering Jobs in the City of London

Hybrid Cloud & Network Security Architect

Hiring Organisation
Vanquish Technologies Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £700 per day
Core Networking Enterprise LAN/WAN/SD-WAN architecture and design. Routing & switching (L2/L3), Wi-Fi controllers/enterprise deployments. Network performance engineering (capacity planning, QoS, traffic engineering). Security Expertise Firewalls, VPNs, IDS/IPS, secure segmentation, Zero Trust architecture. Threat detection/ ...

C++ Software Developer

Hiring Organisation
Ncounter LTD
Location
City of London, London, United Kingdom
Employment Type
Permanent
C++ Software Developer, Risk Technology £160,000 to £170,000 Join a high-performance engineering group responsible for the systems that sit at the heart of a global trading operation. This team owns the core risk platform, handling everything from trade intake and real time position tracking … under load, propagate risk metrics across internal systems and support a front office that depends on accuracy and speed. You will work in an engineering culture that values clarity, simplicity and strong design. Expect to collaborate with colleagues across regions, refine performance at a system level and contribute ...

Enterprise Networks & Security Architect

Hiring Organisation
Reed
Location
City of London, London, England, United Kingdom
Employment Type
Temporary
Salary
Salary negotiable
/SD-WAN architecture and design. Proficiency in routing & switching (L2/L3), and Wi-Fi controllers/enterprise deployments. Expertise in network performance engineering, including capacity planning, QoS, and traffic engineering. Strong background in security, including firewalls, VPNs, IDS/IPS, secure segmentation, and Zero Trust architecture. ...

Application Reliability and Performance Engineer - Reigate

Hiring Organisation
esure Group
Location
City of London, Greater London, UK
Application Reliability and Performance Engineer Job Tenure: Full-time, permanent Salary: Competitive Company Description Ready to join a team that's leading the way in reshaping the future of insurance? Here at esure Group, we are on a mission to revolutionise insurance for good! We’ve been providing Home … experiences that meet our customers ever-changing needs today and in the future. Job Description We are currently recruiting for an Application Reliability and performance Engineer to join our Team. We are seeking a high motivated individual to bring a diverse skill set and proactive mindset to help ensure ...

C++ Software Developer

Hiring Organisation
Ncounter LTD
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 100,000 Annual
C++ Software Developer, Risk Technology £160,000 to £170,000 Join a high-performance engineering group responsible for the systems that sit at the heart of a global trading operation. This team owns the core risk platform, handling everything from trade intake and real time position tracking ...

Principal Full Stack Engineer React, C#, AWS

Hiring Organisation
Smart Sourcer Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Champion Always ship each cycle; partner with Product to balance scope, delivery, and quality. Drive modernisation: sunset legacy code, reduce tech debt, and improve performance, reliability, and observability. Who Were Looking For: Highly experienced full stack engineer with strong proficiency in C# .NET Core and/or Node.js , plus … event-driven, microservices architectures on AWS with secure, scalable patterns. Deep knowledge of API design, integration, and auth (OAuth2, JWT), with end-to-end performance focus. Strong database fundamentals with MySQL/Aurora: schema design, query optimisation, and performance engineering. Hands-on leader: comfortable coding ~40%+ ...