22 of 22 Permanent Performance Engineering Jobs in London

Engineering Leader | AI-Native B2B SaaS | London (Hybrid) Package: £150,000-£200,000 + meaningful equity Location: London (hybrid, in-person collaboration encouraged) bloom has partnered with a high-growth, AI-native B2B SaaS startup that’s rethinking how modern teams operate in one of the most fundamental areas … outstanding founding team from some of the world’s most successful companies 🚀 This is a rare opportunity to step in as the most senior engineering leader , owning the function end-to-end at a pivotal moment of scale. With an established engineering presence across Europe, the business ...

close to the metal. They will operate across everything from bare-metal Linux to modern build and observability stacks . Overview Join a core engineering group as an DevOps Engineer, deploying and scaling Linux platforms that underpin ML/AI-driven trading. You will own reliability for massive simulation … excellence. Key Responsibilities Lead SRE/DevOps practices for Linux platforms powering low-latency, high-throughput trading workloads. Optimize, and tune Linux for performance, resilience, and minimal latency. Drive incident response, root cause analysis, and continuous reliability improvement across production systems. Oversee system automation and reproducibility—build, deploy ...

close to the metal. They will operate across everything from bare-metal Linux to modern build and observability stacks . Overview Join a core engineering group as Lead Site Reliability Engineer, designing and scaling Linux platforms that underpin ML/AI-driven trading. You will architect and own reliability … platform SRE excellence. Key Responsibilities Lead SRE practices for Linux platforms powering low-latency, high-throughput trading workloads. Architect, optimize, and tune Linux for performance, resilience, and minimal latency. Drive incident response, root cause analysis, and continuous reliability improvement across production systems. Oversee system automation and reproducibility—build, deploy ...

Quality Engineering Location: Remote Role Context We are hiring a senior engineering leader to own test engineering and quality at scale across the organisation. This role has full accountability for quality outcomes across all engineering teams and leads an established function of ~40 engineers. The focus … This is a hands-on, deeply technical leadership role, requiring comfort operating from board-level strategy through to detailed technical discussions. Key Responsibilities Test Engineering Strategy & Ownership Own and evolve the end-to-end Test Engineering strategy. Lead quality across four pillars: Functional & Regression Testing Test Automation Performance ...

first AI system that can reason across millions of documents immediately. What You'll Do Architect the backbone of a revolutionary system Pioneer breakthrough Performance Engineering Lead technical innovation Engineer systems that transform an industry What They're Looking For 8+ years of Python Development experience, ideally experience … distributed systems Deep systems architecture experience Performance Engineering experience Technical Leadership experience Track record of building systems that handle millions of operations with sub second response times Background with AI/ML platforms Regulated industry experience What's On Offer Competitive salary and a meaningful equity stake ...

Software Engineering Lead (Java AI) London/WFH to £140k Are you a technical leader with a strong knowledge of AI and its practical uses within software engineering? You could be progressing your career in a senior, hands-on Engineering Manager role at a global FinTech/… trading company that has been consistently voted as one of the UKs top employers. As a Software Engineering Lead you'll head up a team of nine Software Engineers whilst remaining hands-on with coding. Your primary focus will be on using Claude code (and other AI tools ...

pension + 10% benefit funding + 30 days holiday A leading financial institution is hiring an eFX Software Engineer to build and optimise high-performance trading systems within a low-latency e-trading environment. You'll work as a senior technical contributor within the eFX engineering group, driving … architectural decisions, evolving Java performance patterns, and shaping platform strategy at scale. This role offers significant technical scope, direct impact, and the opportunity to influence system performance, design, and future direction across the e-trading stack. The role You will: Design and engineer fault-tolerant, high-performance ...

established trading-related application and drive its ongoing development. You will manage and enhance the existing codebase, deliver new features, ensure reliability and performance, and help evolve the system as the business grows. This is an excellent opportunity for someone who enjoys autonomy, technical responsibility, and working … latency, high-performance applications. What You'll Do Maintain, extend, and optimise an existing Python-based trading application Add new features and improve current capabilities with a focus on performance, reliability and clean architecture Build and optimise real-time pipelines handling high-frequency data Improve latency, throughput ...

Software Engineer (C++/Java – Trading Systems) | £55,000–£77,000 | Hybrid (London/Remote) Build technology that powers real trading. Join a high-performance engineering team developing low-latency, resilient backend systems used in live trading environments. You’ll work on complex technical challenges from … just writing code in the background. This is a fast-growing fintech where strong engineers progress quickly into Senior, Low-Latency, or Quant-Engineering tracks within 12–24 months. What You’ll Do Design, build, and optimise backend components of real-time trading and risk systems Develop clean, efficient ...

Senior Python Engineer who loves solving deep technical challenges? Want to help reinvent how future hardware is created? 🚀🔬 Join a top-tier engineering team building a revolutionary platform that turns high-level hardware requirements into complete circuit designs. You’ll work on complex problems at the crossroads of software … data and engineering, collaborating with experts across multiple disciplines. What You’ll Do Own and evolve backend systems across data models, algorithms, infrastructure and APIs. Build modern Python services across a wide-ranging backend codebase. Work closely with product and engineering teams to understand real hardware-design challenges. ...

lead their global Application Technology team across the UK, Singapore, and the US. This is a high-impact leadership role where you’ll shape engineering culture, drive technical excellence, and scale customer-facing SaaS systems used by some of the largest enterprises in the world. What … doing: Leading and growing a global application engineering team , spanning backend and frontend systems Building critical SaaS capabilities for enterprise clients: account lifecycle, access control, notifications, logging, multi-tenancy, and more Partnering with local leads to ensure global alignment and consistent delivery standards Driving a high-performance engineering ...

lead their global Application Technology team across the UK, Singapore, and the US. This is a high-impact leadership role where you’ll shape engineering culture, drive technical excellence, and scale customer-facing SaaS systems used by some of the largest enterprises in the world. What … doing: Leading and growing a global application engineering team , spanning backend and frontend systems Building critical SaaS capabilities for enterprise clients: account lifecycle, access control, notifications, logging, multi-tenancy, and more Partnering with local leads to ensure global alignment and consistent delivery standards Driving a high-performance engineering ...

platforms, and high‐end automation. Network Engineer – Overview This elite trading firm is seeking a Network Engineer to join a small, high‐impact engineering group supporting ML/AI‐driven trading and research. You will work closely with teams running massive simulation, HPC, and network production workloads that depend … critical network infrastructure at scale and help shape the next generation of compute systems. Key Responsibilities Own the full life cycle of network engineering: design, implementation, and ongoing operations for latency‐sensitive and throughput‐heavy environments. Support large, distributed networks with expert knowledge of routing, switching, and multicast concepts ...

responsibility for designing systems, writing production code, and solving complex technical challenges, while also taking ownership of the people and processes that enable the engineering team to operate effectively. Working closely with the CTO, the successful candidate will help shape the company’s technical direction, drive delivery against … product roadmap, and contribute to building a high-performance engineering culture. On a day-to-day basis, the position balances technical contribution with leadership responsibilities . This includes mentoring and supporting engineers in their development, coordinating delivery to ensure key milestones are met without compromising quality or team ...

Join one of the most elite, high-performance engineering organisations in the world, where technology sits at the centre of a globally competitive, results-driven operation. This is a rare opportunity to support a business where speed, precision, and reliability are non-negotiable, and where IT performance … where needed Salary: £40,000 – £43,000 basic Up to £45,000 for a standout candidate Bonus: Up to £15,000 based on team performance Historically consistent bonus payouts Why Apply? Work in a world-class, performance-critical environment Take on a more senior, mentor-style role while ...

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 ...

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 ...

class VCs and equipped with the runway to tackle bold ideas. We’re looking for exceptional engineers with deep experience in low-level, high-performance software and cloud-scale storage systems. What we're looking for: 5+ years of experience writing high-quality production code Strong foundation in operating … systems and systems programming Proven track record in performance engineering Familiarity with tools like Apache Arrow, Parquet, DataFusion, Clickhouse, or DuckDB is a plus Understanding of cutting-edge ML infrastructure stack (e.g. PyTorch, CUDA) is also a plus Experience with Rust is a bonus Willingness to work ...

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 ...

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%+ ...

it. Our platform is used by tier-one banks, hedge funds, and trading firms to identify latency bottlenecks and other issues in high-performance electronic trading environments. Instead of throwing money and hardware at problems, our platform quickly identifies the real issues with insight only a team of trading … system performance engineers and ex-technical traders can provide. We’re now expanding, developing our Cloud/SaaS offering, and scaling globally with support from industry leaders who have already validated our product as a category leader from a technical perspective. The Role We’re looking for a Junior ...

advanced high-frequency trading firms. This is a rare opportunity to work at the intersection of cutting-edge technology and global financial markets, where performance is measured in nanoseconds and innovation drives competitive advantage. You'll be part of a team that designs and builds ultra-low latency trading … systems deployed across global exchanges. Your work will directly impact trading performance, and you'll be empowered to push the boundaries of what's possible in software and hardware optimisation. Key Responsibilities Architect and implement high-performance C++ systems with extreme latency sensitivity. Optimise every layer ...