151 to 159 of 159 Performance Optimisation Jobs in the City of London

dedicated UX/UI designer, engaging in rapid daily iteration to translate high-fidelity, interactive prototypes into pixel-perfect, production-ready code. ? Real-Time Data Streaming: Engineer the high-performance live transcript view, which displays the AI-screened conversation as the phone is ringing . This involves consuming real-time streaming text data from our backend AI orchestration layer … via WebSockets. ? Mastering Perceived Performance: Implement the critical mid-call intervention feature, allowing a user to seamlessly accept a call from the AI agent. You will become an expert in designing for our < 1000ms V2V (voice-to-voice) latency budget, ensuring the entire UX flow feels fast and responsive. ? API & Backend Integration: Partner with our backend (Application & AI Orchestration … models required to power the Welcome Manager's features, from live transcription to post-call entity-extracted summaries. ? MWC Demo Ownership: Be directly responsible for the polish, stability, and performance of the Welcome Manager application for its critical debut at MWC 2026. ? Cross-Functional Partnership: Collaborate closely with the other Senior Android Engineer (who owns the native CallScreeningService and More ❯

connectivity, including caching, buffering, and sync/retry mechanisms. Implement synchronisation strategies between edge devices (e.g. SQLite) and cloud systems (PostgreSQL). Drive best practices in architecture, modularity, and performance through thorough code reviews. Mentor and support engineers, contributing to a culture of technical excellence. Maintain clear and comprehensive technical documentation for APIs and services. Key Requirements as a … with strong Python experience. Proven experience deploying to, or strong passion for working on, constrained hardware (NUCs, Raspberry Pi, embedded Linux). Strong database skills (PostgreSQL, SQLite) and ORM performance optimisation. Experience with TDD and writing maintainable, production-grade code. Strong communicator with collaborative mindset. Nice-to-Haves: Experience working with embedded, IoT, kiosk, or distributed edge systems. Background More ❯

connectivity, including caching, buffering, and sync/retry mechanisms. Implement synchronisation strategies between edge devices (e.g. SQLite) and cloud systems (PostgreSQL). Drive best practices in architecture, modularity, and performance through thorough code reviews. Mentor and support engineers, contributing to a culture of technical excellence. Maintain clear and comprehensive technical documentation for APIs and services. Key Requirements as a … with strong Python experience. Proven experience deploying to, or strong passion for working on, constrained hardware (NUCs, Raspberry Pi, embedded Linux). Strong database skills (PostgreSQL, SQLite) and ORM performance optimisation. Experience with TDD and writing maintainable, production-grade code. Strong communicator with collaborative mindset. Nice-to-Haves: Experience working with embedded, IoT, kiosk, or distributed edge systems. Background More ❯

Rate: upto 50/hour must have own limited company Start Date: ASAP Company Overview Our client is a cutting-edge medical technology company focused on building secure, high-performance software solutions that transform patient care. Their teams work at the forefront of video streaming, AI, and embedded systems, delivering innovative platforms that power next-generation medical devices. Role … We are seeking a Senior C++ Engineer with deep expertise in live video streaming and software-based video pipelines. This role involves integrating WebRTC streaming into existing systems, optimising performance using hardware acceleration, and contributing to the development of secure, production-grade software. Youll work closely with a multidisciplinary team to deliver robust and scalable solutions for medical applications. … Key Responsibilities Design and implement live video streaming capabilities using WebRTC. Optimise video pipelines using GStreamer and/or FFmpeg with hardware acceleration. Develop high-performance C++ software with multi-threading and IPC. Collaborate with cross-functional teams to build secure-by-design medical device software. Maintain high code quality through documentation and peer reviews. Skills & Experience Expert-level More ❯

Rate: upto £50/hour – must have own limited company Start Date: ASAP Company Overview Our client is a cutting-edge medical technology company focused on building secure, high-performance software solutions that transform patient care. Their teams work at the forefront of video streaming, AI, and embedded systems, delivering innovative platforms that power next-generation medical devices. Role … We are seeking a Senior C++ Engineer with deep expertise in live video streaming and software-based video pipelines. This role involves integrating WebRTC streaming into existing systems, optimising performance using hardware acceleration, and contributing to the development of secure, production-grade software. You’ll work closely with a multidisciplinary team to deliver robust and scalable solutions for medical … applications. Key Responsibilities Design and implement live video streaming capabilities using WebRTC. Optimise video pipelines using GStreamer and/or FFmpeg with hardware acceleration. Develop high-performance C++ software with multi-threading and IPC. Collaborate with cross-functional teams to build secure-by-design medical device software. Maintain high code quality through documentation and peer reviews. Skills & Experience Expert More ❯

Ultra-Low Latency C++ Engineer | High-Frequency Trading Salary: £150k-£225k Total compensation: £250k-500k depending on performance and seniority A leading quant/systematic trading firm have multiple headcount for Ultra-Low Latency C++ Engineers to join their High-Frequency Trading team in London. The teams focus is building ultra-low-latency systems operating at global scale. They … re seeking experienced C++ engineers passionate about performance optimization and elegant system design where nanoseconds matter! What You'll Do: Design and optimize latency-critical C++ systems across trading, market data, and infrastructure components Performance engineering at every layer: CPU, cache, memory, and network Profile, benchmark, and fine-tune system behaviour under real-world conditions Collaborate with hardware … and FPGA engineers on end-to-end architecture design Kernel-level optimization and low-level systems tuning Required: 5+ years developing performance-critical C++ applications (modern C++ standards) Strong systems programming and low-level understanding Expertise in Linux internals, kernel tuning, and low-level profiling tools Genuine curiosity about hardware behaviour, networking, and system optimization Why Join: Work on More ❯

Ultra-Low Latency C++ Engineer | High-Frequency Trading Salary: £150k-£225k Total compensation: £250k-500k depending on performance and seniority A leading quant/systematic trading firm have multiple headcount for Ultra-Low Latency C++ Engineers to join their High-Frequency Trading team in London. The teams focus is building ultra-low-latency systems operating at global scale. They … re seeking experienced C++ engineers passionate about performance optimization and elegant system design where nanoseconds matter! What You'll Do: Design and optimize latency-critical C++ systems across trading, market data, and infrastructure components Performance engineering at every layer: CPU, cache, memory, and network Profile, benchmark, and fine-tune system behaviour under real-world conditions Collaborate with hardware … and FPGA engineers on end-to-end architecture design Kernel-level optimization and low-level systems tuning Required: 5+ years developing performance-critical C++ applications (modern C++ standards) Strong systems programming and low-level understanding Expertise in Linux internals, kernel tuning, and low-level profiling tools Genuine curiosity about hardware behaviour, networking, and system optimization Why Join: Work on More ❯

About epx Epx, formerly EP&T Global, is a global leader in building performance optimisation. Our EDGE platform powers energy and operational efficiency across real estate in 26 countries, helping reduce waste and improve outcomes. With bold growth ambitions, a customer-first mindset, and trusted expertise, we’re driving the transition to a net zero built environment - one building … for property owners and operators in a range of sectors including transport, logistics and industrial. It delivers a comprehensive suite of services including security, health & safety, risk management, energy optimisation, critical asset management, compliance and reporting. With a land-and-expand model, EDGE Industrial is poised for significant growth across the UK and European market. The Role: We are … confidence. Collaborate Internally : Work cross-functionally to ensure seamless service delivery and champion the customer voice. Share Insights : Work with the appointed Customer Delivery Analyst to coordinate reporting, present performance data, and provide feedback to improve outcomes. Be the Expert : Develop deep expertise in the EDGE Industrial platform and its underlying IoT technologies. What We’re Looking For: Proven More ❯

About epx Epx, formerly EP&T Global, is a global leader in building performance optimisation. Our EDGE platform powers energy and operational efficiency across real estate in 26 countries, helping reduce waste and improve outcomes. With bold growth ambitions, a customer-first mindset, and trusted expertise, we’re driving the transition to a net zero built environment - one building … for property owners and operators in a range of sectors including transport, logistics and industrial. It delivers a comprehensive suite of services including security, health & safety, risk management, energy optimisation, critical asset management, compliance and reporting. With a land-and-expand model, EDGE Industrial is poised for significant growth across the UK and European market. The Role: We are … confidence. Collaborate Internally : Work cross-functionally to ensure seamless service delivery and champion the customer voice. Share Insights : Work with the appointed Customer Delivery Analyst to coordinate reporting, present performance data, and provide feedback to improve outcomes. Be the Expert : Develop deep expertise in the EDGE Industrial platform and its underlying IoT technologies. What We’re Looking For: Proven More ❯