Lead Software Engineer - Proxy/SSE Network Security

Reference: zckoffl8vzexuo1ezjj5

We are seeking a Lead Software Engineer specialising in proxy and Server-Sent Events (SSE) network security to guide the design, development and operation of secure, highly available services. In this role, you will provide technical leadership across the full software development lifecycle, from architecture and technical planning through implementation, testing, deployment and continuous improvement. You will help shape scalable solutions that protect traffic, support real-time communication and meet demanding standards for performance, resilience and security.

Your responsibilities will include leading the development of proxy services, secure gateways and SSE-based communication components; defining protocols, interfaces and service standards; and reviewing designs and code to ensure quality and maintainability. You will investigate complex production issues, improve observability and incident response, and collaborate with infrastructure, platform, security and product teams to deliver reliable services. You will also mentor engineers, contribute to engineering standards, identify technical risks and communicate complex decisions clearly to both technical and non-technical stakeholders.

The successful candidate will have substantial experience building and leading software engineering projects in distributed, security-sensitive environments. Strong knowledge of HTTP, TLS, TCP/IP, reverse proxies, authentication and authorisation mechanisms, and real-time or streaming technologies such as SSE is essential. You should be proficient in at least one modern programming language, experienced with cloud or containerised platforms, and comfortable working with automated testing, CI/CD pipelines, monitoring and infrastructure-as-code. Experience with threat modelling, secure coding practices, traffic management and high-availability system design would be highly desirable. We are looking for a pragmatic, collaborative technical leader who can balance delivery with long-term architectural quality and coach others to achieve excellent results.

COMPETITIVE SALARY
Added 01/09/2026
Reference: zckoffl8vzexuo1ezjj5

Lead Software Engineer - Proxy/SSE Network Security

London, England, United Kingdom Permanent Network Security

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