1 to 25 of 30 Performance Optimisation Jobs in the City of London

would be beneficial. Key Responsibilities: Lead front-end development across LibertyLondon.com (Salesforce Commerce Cloud) and the Fabrics site (WordPress), ensuring high standards of quality, performance, and maintainability. Translate design systems, wireframes, and high-fidelity designs into robust, scalable, and accessible front-end solutions. Own and influence front-end architectural … discovery and planning process. Design, build, and deploy MVT and A/B complex experiments using Dynamic Yield, collaborating with analytics and optimisation teams to improve conversion and usability. Support HTML email development, ensuring consistency, accessibility, and responsiveness across clients and devices. Champion front-end best practices, including performance ...

looking for a C++ Trading Platform Developer to join its London-based team. This is an opportunity to work at the intersection of high-performance engineering and digital asset markets, building and scaling a global trading platform that operates across dozens of exchanges worldwide. The environment combines the technical … platform spanning multiple continents, covering: Real-time market data capture Order entry and connectivity across numerous exchanges Robust networking and monitoring systems Scaling and performance optimisation of core infrastructure The tech stack is primarily C++ and Python, running on Linux across both development and production. The focus ...

product-focused environment where engineering decisions have direct impact at scale. The team operates at pace, with a strong emphasis on ownership, performance, and continuous iteration. The Role - Remote Europe (CET 3 We are seeking Senior Backend focused Full Stack Engineers to join a fully remote, cross-functional team … Responsibilities Design, build, and maintain scalable backend systems Work on high-traffic applications used by a global user base Contribute to architecture and performance optimisation Collaborate with cross-functional teams including Product, Design, and DevOps Take ownership of features from concept through to deployment Requirements 5+ years ...

responsibilities: Design, build, and maintain cloud infrastructure (primarily Azure and GCP) Develop and manage CI/CD pipelines and automation Implement monitoring, alerting, and performance optimisation Ensure security, compliance, and system reliability Troubleshoot production issues and provide operational support Collaborate with architects, developers, and stakeholders Champion DevOps culture ...

integrate into the Arrive Global Platform, we are looking for a Staff Engineer. We are transitioning from a established PHP foundation to a high-performance, modern ecosystem built on Java and Kotlin . We need a technical heavyweight who can navigate our roots while architecting the future of global … platform while collaborating closely with engineers, product teams, and stakeholders. Your work will include: Leading architecture discussions and technical decision-making Improving performance, scalability, and reliability of our platform Diagnosing complex issues across local, pre-release, and production environments Driving engineering best practices across DevSecOps, CI/ ...

data integration workflows. Operational Excellence: Contribute to defining reusable development patterns, enforcing coding standards, and implementing MLOps best practices that support version control, performance optimisation, and maintainability. Cross-Disciplinary Collaboration: Work side-by-side with data scientists, product managers, platform engineers, and QA teams to align on technical ...

that support real-world trading strategies. As a senior member of the team, you will contribute both technically and strategically, helping shape development standards, performance optimisation, and system scalability. You will primarily work within a C# .NET SQL Server ASP.NET ecosystem, developing high-performance, reliable, and maintainable … applications. Key Responsibilities Design, develop, and maintain high-performance applications in C# and .NET Lead architectural discussions and contribute to technical direction Build scalable, reliable systems to support automated trading and research Develop and optimise database solutions (SQL Server or equivalent) Improve performance, reliability, and automation across systems ...

leader within the Surveillance Technology team. Provide expert oversight across analysis, architecture, design and delivery of complex systems. Architect, build, and evolve scalable, high-performance solutions for Communications Surveillance and Record Keeping. Lead engineering standards: architecture reviews, vendor assessments, impact analysis, and automated testing. Mentor and develop engineering talent … Record Keeping. Translate complex technical concepts for both technical and non-technical stakeholders. Support agile planning, estimation and prioritisation. Identify opportunities for system optimisation, refactoring, and alignment to target architectures. Manage technical risks, issues and dependencies. Benchmark against peer organisations to ensure alignment with regulatory and industry expectations. Experience ...

including Azure Databricks, Azure Data Lake Storage, and Azure Data Factory. Advanced proficiency in SQL, Python, and Spark (PySpark), with a strong focus on performance optimization and distributed processing. Proven experience in CI/CD practices using industry-standard tools (e.g., GitHub Actions, Azure DevOps). Strong understanding ...

fluent in the full Microsoft data stack. You will be the primary developer of enterprise reporting across commercial, financial, operational, and project performance domains - working directly with business stakeholders to turn complex construction data into trusted, performant analytical outputs. You will work within a small, high-calibre Digital … through to production deployment, across all business domains. Develop complex semantic models with production-quality DAX - including advanced time intelligence, calculation groups, UDFs and performance-optimised measures at scale. Write advanced M/Python transformations, including custom functions, parameterised queries, and API connections to source systems. Manage model definitions ...

raising the bar across the team What they’re looking for: Strong frontend experience (React or Svelte) Deep JavaScript knowledge (ES6+, async patterns, performance) Experience building interactive/immersive web experiences Strong CSS skills (animations, layouts, micro-interactions) Experience with GSAP/ScrollTrigger Understanding of performance optimisation ...

providing Python-based solutions that directly impact the profitability of the business. This is an exciting opportunity to work in a fast-paced, high-performance environment where you can push the boundaries of technology in financial markets. Key Responsibilities: Design, develop, and maintain highly efficient Python-based applications … commodities trading, risk management, and real-time data analysis. Build scalable, high-performance data pipelines to process large datasets from multiple sources, including real-time market data and fundamental data. Implement robust APIs and microservices to integrate trading systems, analytics platforms, and external data providers. Optimize performance ...

looking to work on problems that genuinely test the limits of performance, scale, and engineering craft? We are building a small, elite team of systems engineers to design and evolve the core infrastructure that powers a highly sophisticated trading platform. This is not application level development. This is deep … work on performance critical systems where nanoseconds matter, correctness is non negotiable, and your decisions directly impact real world outcomes. You will be working on the foundations of the trading stack, including market data, execution, simulation, and internal infrastructure. The problems are hard, the standards are high ...

Engineer ready to take the next step in their career. This is not your typical Software development role. You will be working on high-performance systems where efficiency, precision and scalability directly impact customers across the globe. With this company set to secure some significant funding, this … will design and build production-grade C++ software that sits at the intersection of advanced engineering and solving real-world problems.. From optimising performance in modern C++ to contributing to user-facing tools. C++ Software Engineer requirements Strong experience with modern C++ (C++11 or newer) Experience working with ...

architecture standards, drive delivery, and evolve cloud infrastructure, working closely with Product and the CTO. Responsibilities Lead the team: 1:1s, career growth, performance, hiring Own backend architecture and design standards (DDD, clean APIs, open standards) Drive end-to-end delivery with a bias to shipping value incrementally Evolve … systems Proven engineering leadership: hiring, coaching, 1:1s, and team delivery Strong software design fundamentals: DDD, modularity, clean APIs, versioning PostgreSQL, ORMs, migrations, and performance optimisation Experience building developer platforms, multi-tenant systems, or public APIs Python (FastAPI/Flask), Docker, GitHub Actions, Cloud Run, CI/ ...

people genuinely love what they work on Friendly, tight-knit engineering culture Flat structure with clear and achievable progression Exposure to cutting-edge tooling, performance optimisation, and large-scale systems ...

Fabric etc) before moving into Product Ownership Technical proficiency:Familiarity with Azure services (e.g., Data Lake, Synapse, Fabric) and Databricks for data engineering, analytics, performance optimisation, and governance Development Framework experience within Microsoft Stack Technologies Experience with implementing and optimising scalable cloud infrastructure is highly valued Backlog management ...

with core data engineering tools and technologies (e.g. ETL/ELT pipelines, data warehouses, orchestration tools) Strong understanding of data modelling, data quality, and performance optimisation Desirable Experience Experience with Palantir (Foundry, Gotham) Willingness and aptitude to learn Palantir technologies on the job Background working in defence, government ...

data models and PQL logic that supports end‐to‐end visibility. Top 5 responsibilities : Data Engineering & Event Log Construction Data Model & Data Pipeline Development Performance Optimization & Quality Collaboration & Technical Documentation Governance & Engineering Best Practices Experience : 3+ years Celonis Process Mining experience Frameworks - CCPM & OCPM SQL, Python, data modeling ...

Title: Senior Software Engineer Industry: Elite FinTech Compensation: Up to £300k Total 1st Year Compensation Location: London (Hybrid) Key Focus: Low-level systems, performance optimisation, and modern C++ As part of the team, you could be: Working with highly advanced infrastructure capable of processing billions of data points … Developing low-level systems using modern C++ and gaining deep exposure to latency-sensitive environments. Contributing to the design and development of a high-performance proprietary database built from the ground up. Exploring research-driven projects involving functional programming concepts and languages such as Rust, Erlang, or internally developed ...

Marketing, Brand, and Regional teams. Act as the primary external-facing marketing lead for strategic partners, driving co-marketing planning, launch execution, and ongoing performance optimization. Retail & Launch Amplification (Partnered Ownership) Partner closely with the Retail team toamplify international retail launches through strategic partners and co-marketing programs. Identify ...

Ensure pipelines are auditable, lineage-aware, idempotent, and resilient in regulated environments. Implement robust data quality controls including testing, validation, monitoring, and alerting. Drive performance optimization across Spark and Snowflake workloads. Partner with Product, Engineering, DevOps, and Regulatory teams to translate requirements into scalable technical designs. Improve engineering standards … your partner, and your child(ren) Employee Assistance Program Enhanced parental leave (maternity & paternity) Professional qualification sponsorship Accelerated career progression based on performance, not tenure Holiday entitlement increases with tenure Flexible hours with core collaboration time Paid volunteering leave Gym & fitness discounts Quarterly socials, and office snacks & drinks Interest ...

Iceberg tables on AWS for schema evolution and ACID operations. Build Iceberg-based ingestion and transformation pipelines using Glue, EMR, or Spark. Ensure high performance for petabyte-scale telecom datasets (CDRs, tower logs, subscriber activity). 4. Querying & Analytics (Athena) Develop and optimize Athena queries for operational and analytical … logs) Customer lifecycle & churn data Billing & revenue assurance Build models and pipelines to support network analytics, customer 360, churn prediction, fraud detection , etc. 7. Performance Optimization & Monitoring Tune Spark/Glue jobs for performance and cost. Monitor Redshift/Athena/S3 efficiency and implement best practices. Perform ...

certifications, including AWS, Azure, and GCP, along with extensive in-house courses and a mentoring program. Key Responsibilities Design and implement scalable, high-performance architectures for diverse client projects, ensuring alignment with business objectives and technical requirements. Collaborate with clients to gather and analyse requirements, translating them into robust … accessible. Provide technical leadership and mentorship to development teams, guiding them through best practices in software engineering and architecture. Conduct regular code reviews and performance optimisations to ensure high-quality, efficient solutions. Stay up-to-date with emerging technologies and industry trends, evaluating their potential impact on client projects ...

processing and analysing live content in real time. As the platform scales, they’re hiring a Full-Stack Engineer to design and deliver high-performance systems across real-time data pipelines, modern frontend applications, and AI-enhanced product features. What You'll Do as a Full-Stack Engineer: Design … providers. Regular use of AI tools and coding assistants to increase development velocity and automate workflows. Strong engineering fundamentals including testing, documentation, security, and performance optimisation. Comfort working in fast-moving environments where ownership, clarity, and delivery are expected. Nice to Have’s as a Full-Stack Engineer: Experience ...