Permanent Performance Optimisation Jobs in Central London

23 of 23 Permanent Performance Optimisation Jobs in Central London

ClickHouse Platform Engineer

City, London, United Kingdom
Hybrid / WFH Options
Michael Page (UK)
services to clients across various industries, with a focus on cutting-edge technology and data-driven decision-making. Job Description Design and implement high-performance ClickHouse environments Drive the migration of analytical databases to ClickHouse with minimal disruption Manage database query optimisation for scalability and performance Operate … and fault tolerance Develop and maintain backup, disaster recovery, and data security strategies Collaborate with teams to align database solutions with business goals Monitor performance with Prometheus and Grafana , addressing issues proactively Implement best practices for data modelling and processing Guide and mentor junior developers in ClickHouse best practices … troubleshooting The Successful Applicant The successful candidate will have: Extensive experience with ClickHouse in a production environment Proficiency in Linux/Unix and database performance optimisation Strong knowledge of query optimisation , data modelling , and ETL Experience with DevOps tools (Jenkins, Ansible) and CI/CD pipelines Solid More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Java Developer - Ultra Low Latency

City Of London, England, United Kingdom
Selby Jennings
Role Overview: We are looking for a highly skilled Java Software Engineer to join a fast-paced, high-performance engineering team focused on building ultra-low latency systems for a leading digital asset trading platform. This role is ideal for someone with a deep understanding of real-time systems … and a passion for performance optimisation in latency-sensitive environments. Key Responsibilities: Design, implement, and optimise ultra-low latency trading components in Java Develop and maintain exchange connectivity , order routing, and market data processing systems Collaborate with traders and quantitative developers to deliver high-performance, production-grade … solutions Continuously profile and tune system performance to minimise latency and maximise throughput Required Skills & Experience: Strong proficiency in core Java , with a focus on performance, concurrency, and memory management Proven experience building low-latency, high-throughput systems in trading or similarly demanding environments Deep understanding of multithreading More ❯
Posted:

Java Developer - Ultra Low Latency

london (city of london), south east england, united kingdom
Selby Jennings
Role Overview: We are looking for a highly skilled Java Software Engineer to join a fast-paced, high-performance engineering team focused on building ultra-low latency systems for a leading digital asset trading platform. This role is ideal for someone with a deep understanding of real-time systems … and a passion for performance optimisation in latency-sensitive environments. Key Responsibilities: Design, implement, and optimise ultra-low latency trading components in Java Develop and maintain exchange connectivity , order routing, and market data processing systems Collaborate with traders and quantitative developers to deliver high-performance, production-grade … solutions Continuously profile and tune system performance to minimise latency and maximise throughput Required Skills & Experience: Strong proficiency in core Java , with a focus on performance, concurrency, and memory management Proven experience building low-latency, high-throughput systems in trading or similarly demanding environments Deep understanding of multithreading More ❯
Posted:

Development Lead

City of London, London, United Kingdom
Rec3 Global Ltd
effectiveness and efficiency. Your day-to-day responsibilities include: Developing front-end applications using React Utilise React libraries and frameworks, including Next JS, for performance optimisation and efficient state management Integrate React applications with.Net Core, to create seamless end-to-end solutions. Leverage .Net Core capabilities to build … high-performance and scalable back-end services, that support the functionality of front-end applications. Collaborate with team members to translate wireframes and prototypes into fully functional front-end applications. Core skills include: Strong front-end development experience with React Proficient in .Net Core and a background is developing … skills Proven ability to collaborate with senior stakeholders (both business and IT) Are you a creative problem-solver who loves to build sleek, high-performance applications? Do you want your code to support one of the worlds most innovative law firms and help drive real change? If so, apply More ❯
Employment Type: Permanent
Posted:

Software Engineer - Solution Design Exp

City Of London, England, United Kingdom
Lorien
Step Functions, S3, SNS/SQS, Cognito, etc.). Actively contribute to back-end development using Python, ensuring best practices in clean code and performance optimization. Support front-end architecture and implementation using Angular, ensuring a seamless and scalable user experience. Ensure robust CI/CD pipelines, infrastructure as More ❯
Posted:

Software Engineer - Solution Design Exp

london (city of london), south east england, united kingdom
Lorien
Step Functions, S3, SNS/SQS, Cognito, etc.). Actively contribute to back-end development using Python, ensuring best practices in clean code and performance optimization. Support front-end architecture and implementation using Angular, ensuring a seamless and scalable user experience. Ensure robust CI/CD pipelines, infrastructure as More ❯
Posted:

Remote Azure Data Engineer (Contract)

Central London, UK
Hybrid / WFH Options
Discovered MENA
BI teams on reporting layers Supporting data discovery, KPI definition, and data quality initiatives Documenting architecture, metadata, and data lineage for project transparency Driving performance optimization and issue resolution across the data stack ✅ What We’re Looking For: 5+ years of experience in data engineering, integration, and ETL/ More ❯
Posted:

Remote Azure Data Engineer (Contract)

City of London, London, United Kingdom
Hybrid / WFH Options
Discovered MENA
BI teams on reporting layers Supporting data discovery, KPI definition, and data quality initiatives Documenting architecture, metadata, and data lineage for project transparency Driving performance optimization and issue resolution across the data stack ✅ What We’re Looking For: 5+ years of experience in data engineering, integration, and ETL/ More ❯
Posted:

Remote Azure Data Engineer (Contract)

Central London / West End, London, United Kingdom
Hybrid / WFH Options
Discovered MENA
BI teams on reporting layers Supporting data discovery, KPI definition, and data quality initiatives Documenting architecture, metadata, and data lineage for project transparency Driving performance optimization and issue resolution across the data stack ✅ What We’re Looking For: 5+ years of experience in data engineering, integration, and ETL/ More ❯
Posted:

Remote Azure Data Engineer (Contract)

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Discovered MENA
BI teams on reporting layers Supporting data discovery, KPI definition, and data quality initiatives Documenting architecture, metadata, and data lineage for project transparency Driving performance optimization and issue resolution across the data stack ✅ What We’re Looking For: 5+ years of experience in data engineering, integration, and ETL/ More ❯
Posted:

Remote Azure Data Engineer (Contract)

london (west end), south east england, united kingdom
Hybrid / WFH Options
Discovered MENA
BI teams on reporting layers Supporting data discovery, KPI definition, and data quality initiatives Documenting architecture, metadata, and data lineage for project transparency Driving performance optimization and issue resolution across the data stack ✅ What We’re Looking For: 5+ years of experience in data engineering, integration, and ETL/ More ❯
Posted:

Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

Central London, UK
Hybrid / WFH Options
Owen Thomas | Pending B Corp™
and building robust backend services across Java, Python, and Rust-based systems Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Ideally, supporting legacy Ruby codebases or More ❯
Posted:

Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

City of London, London, United Kingdom
Hybrid / WFH Options
Owen Thomas | Pending B Corp™
and building robust backend services across Java, Python, and Rust-based systems Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Ideally, supporting legacy Ruby codebases or More ❯
Posted:

Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

Central London / West End, London, United Kingdom
Hybrid / WFH Options
Owen Thomas | Pending B Corp™
and building robust backend services across Java, Python, and Rust-based systems Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Ideally, supporting legacy Ruby codebases or More ❯
Posted:

Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Owen Thomas | Pending B Corp™
and building robust backend services across Java, Python, and Rust-based systems Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Ideally, supporting legacy Ruby codebases or More ❯
Posted:

Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

london (west end), south east england, united kingdom
Hybrid / WFH Options
Owen Thomas | Pending B Corp™
and building robust backend services across Java, Python, and Rust-based systems Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Ideally, supporting legacy Ruby codebases or More ❯
Posted:

Shopify Developer

Central London, London, United Kingdom
Hybrid / WFH Options
Halian Technology Limited
Champion best coding practices and ensure that development is performed with high standards in mind, including using Git, code reviews, and maintaining clear documentation. Performance Optimization: Regularly review and optimize e-commerce websites to ensure high performance, page speed, and a seamless user experience across devices. Troubleshooting & Issue More ❯
Employment Type: Permanent, Work From Home
Salary: £90,000
Posted:

UI Developer

City Of London, England, United Kingdom
Selby Jennings
their London office. Specialising in React/TypeScript and a server side language, you will be focused on building and enhancing real-time, high-performance user interfaces for trading platforms as well as contributing to maintaining and developing platform infrastructure. Key Responsibilities: Design, develop, and maintain sophisticated front-end … consistency across applications. Participate in the full software development lifecycle, including requirements gathering, design, coding, testing, deployment, and support. Contribute to the modernization and performance optimization of existing UI infrastructure. Preferred Qualifications: Proven experience working on financial systems, ideally within trading platforms or other real-time systems . Strong More ❯
Posted:

UI Developer

london (city of london), south east england, united kingdom
Selby Jennings
their London office. Specialising in React/TypeScript and a server side language, you will be focused on building and enhancing real-time, high-performance user interfaces for trading platforms as well as contributing to maintaining and developing platform infrastructure. Key Responsibilities: Design, develop, and maintain sophisticated front-end … consistency across applications. Participate in the full software development lifecycle, including requirements gathering, design, coding, testing, deployment, and support. Contribute to the modernization and performance optimization of existing UI infrastructure. Preferred Qualifications: Proven experience working on financial systems, ideally within trading platforms or other real-time systems . Strong More ❯
Posted:

PowerBI Developer

City, London, United Kingdom
Venquis
MongoDB, SQL databases, Excel, and cloud services. Design and implement efficient data models and ETL processes using Power Query and DAX. Optimize Power BI performance by fine-tuning data models. Collaborate with data analysts and business stakeholders to gather and understand reporting requirements. Ensure data accuracy and consistency across … complex business requirements into effective dashboards. Strong analytical and problem-solving skills. Excellent communication and stakeholder management abilities. Experience working with large datasets and performance optimization. Knowledge of data governance, security, and compliance best practices. Qualifications A Bachelor's degree in a relevant field (e.g., Statistics, Mathematics, Computer Science More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Full stack Microsoft Azure Data Engineer/Developer

City, London, United Kingdom
Experis - ManpowerGroup
Databricks Developer with expertise in data engineering best practices. The ideal candidate will have strong experience in Git/DevOps integration, Unity Catalog, and performance optimization for Databricks data transformation workloads. Key Responsibilities: Develop and optimize Databricks data pipelines for efficient data transformation. Implement code version management using Git … and DevOps integration. Configure and manage Unity Catalog for secure and scalable data governance. Enhance performance optimization in Databricks workloads, ensuring efficient resource utilization. Collaborate with data engineers and architects to design scalable solutions. Ensure adherence to best practices in Databricks data engineering. Required Skills & Experience: Hands-on experience More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Technical Development Lead - Decarbonisation and Energy

City of London, London, United Kingdom
Astute Technical Recruitment Ltd
leadership across RIBA Stages 0-4 and Stage 7 to ensure integrated engineering and commercial outcomes. Oversee building and system-level energy modelling for performance optimisation. Develop bespoke modelling tools for energy forecasting, demand-side management, and system analysis. Create robust business cases and financial models to support funding … bids and project viability. Present complex technical and financial insights to internal and external stakeholders. Support the optimisation of building energy systems via digital twin models, analytics, and BEMS improvements. Collaborate across engineering, commercial, business development, and delivery teams to ensure successful project execution. Professional qualifications We are looking More ❯
Employment Type: Permanent
Salary: £90,000
Posted:

Senior Product Manager Video & AI

Central London, London, United Kingdom
Hybrid / WFH Options
Stats Perform
the organization. Sales Enablement: Partner with global sales teams to support revenue goals by providing clear, compelling narratives and resources that showcase product value. Performance Monitoring: Establish and track KPIs to measure product success, identify improvement opportunities, and align outcomes with business goals. Innovation & Trends: Stay abreast of industry … for content creation, video editing, or media production. Strong knowledge of video streaming protocols (e.g., SRT, RTMP, HLS), cloud processing, encoding/transcoding, and performance optimization. Proficiency in managing the full product lifecycle, from ideation to launch, evaluation, and iteration. Excellent written and verbal communication skills, with the ability More ❯
Employment Type: Permanent, Work From Home
Posted:
Performance Optimisation
Central London
25th Percentile
£65,000
Median
£75,000
75th Percentile
£96,250
90th Percentile
£102,500