1 to 25 of 52 Permanent Performance Tuning Jobs in London

Management: Design and maintain database systems, configure hardware, and optimize database performance. 6. Data Security and Integrity: Implement security protocols to protect data from unauthorized access or breaches. 7. Performance Tuning: Optimize database performance through indexing, query tuning, and efficient resource management. 8. Database Monitoring and Troubleshooting: Continuously monitor databases to identify and resolve issues before … RDS, Azure SQL). Data Modeling: Ability to design normalized, relational, and sometimes non-relational databases. Security Protocols: Knowledge of database encryption, access controls, and other security best practices. Performance Optimization: Experience in performance tuning techniques such as indexing, caching, and load balancing. Problem-Solving: Strong analytical skills for troubleshooting issues in database systems. Communication: Ability to … documentation to support the adoption and further development of Information systems. Experience of developing or designing solutions to deliver information content through Microsoft SharePoint. Experience of database administration and performance tuning at an enterprise level. Experience of Epic Cogito suite of tools including Caboodle, Clarity, Radar, Reporting Workbench, Data Gateway, and Slicer Dicer Skills Essential Ability to plan More ❯

Hardware Engineer you will collaborate with the research and trading teams, focussing on Linux based systems, including workload scheduling design and implementation, management of systems at large scale, high performance file system design and operation, software design and life cycle (SDLC), kernel and network performance tuning for low-latency and high-throughput applications instrumentation and telemetry collection. … You'll have exposure across cutting-edge high-performance trading and research infrastructure, development and maintenance across operating system platforms, software development tooling, high-performance computing, high performance networking and large-scale storage systems; staying on top of industry trends and making strategic recommendations. Location/WFH: You'll join colleagues based in high spec offices with … flexibility to work from home 1-2 days a week. About you: You have advanced Linux systems administration and platform engineering experience You have an indepth knowledge of high-performance analysis, tuning and optimisation across Linux kernel tuning, hardware optimisation, network performance and storage performance You have experience of troubleshooting and resolving high-complexity system More ❯

modern Azure estate, drive cloud-native transformation, and shape the future of infrastructure for a high-impact engineering team. Join a tech-forward company where your decisions directly influence performance, reliability, and innovation across platforms used by millions. You'll be at the heart of a mission to modernise legacy systems, accelerate delivery, and empower developers with world-class … What You'll Be Doing As a Senior Infrastructure Engineer , you'll: Architect and manage Azure infrastructure using Infrastructure as Code (ARM, Bicep, Terraform) Optimise .NET application stacks for performance, scalability, and resilience Implement observability and monitoring tools to ensure system health and uptime Lead CI/CD automation using Azure DevOps and Git workflows Drive cloud-native transformation … has led major cloud migrations or built platforms from scratch. What You'll Bring 5+ years of hands-on experience with Azure infrastructure Strong understanding of .NET architecture and performance tuning Proven expertise in Azure DevOps Build & Release Pipelines Experience with APM tools (e.g. New Relic, AppDynamics) Deep knowledge of profiling, benchmarking, and optimisation Bonus Skills: Infrastructure as More ❯

hands-on engineer with proven experience configuring, administering, and supporting Solace PubSub+ environments. You will take ownership of the full lifecycle of the messaging platform, from deploying brokers and tuning performance to managing access controls, optimising resources, and ensuring reliable application connectivity across the estate. This role suits someone who enjoys being close to the technology, solving issues … Needed At least 1 year of hands-on experience configuring, administering, and troubleshooting Solace PubSub+ Strong understanding of event-driven and messaging principles Good knowledge of networking concepts, platform performance tuning, and cloud deployment patterns Ability to analyse issues across application, network, and infrastructure layers Clear communication skills and the ability to collaborate across engineering teams Useful Extras More ❯

hands-on engineer with proven experience configuring, administering, and supporting Solace PubSub+ environments. You will take ownership of the full lifecycle of the messaging platform, from deploying brokers and tuning performance to managing access controls, optimising resources, and ensuring reliable application connectivity across the estate. This role suits someone who enjoys being close to the technology, solving issues … Needed • At least 1 year of hands-on experience configuring, administering, and troubleshooting Solace PubSub+• Strong understanding of event-driven and messaging principles• Good knowledge of networking concepts, platform performance tuning, and cloud deployment patterns• Ability to analyse issues across application, network, and infrastructure layers• Clear communication skills and the ability to collaborate across engineering teams Useful Extras More ❯

Senior Software Engineer London, UK £140,000 basic plus bonus We’re looking for a Senior Software Engineer to take ownership of optimising large-scale, high-performance systems used by demanding clients worldwide. You’ll work across the full delivery lifecycle, from profiling and tuning code, to rethinking architectures ensuring software runs with maximum speed, minimal memory usage … dive deep into complex systems, identify bottlenecks, and implement improvements that make a measurable difference for clients. What you’ll be doing Profiling and optimising existing code to boost performance and reduce memory footprint Designing and implementing performance enhancements for high-throughput, low-latency systems Working with Product, Engineering, and Clients to understand and meet performance targets … Creating and maintaining automated performance and load testing frameworks Mentoring engineers on writing efficient, scalable, and maintainable code Contributing to architectural decisions that directly impact performance and reliability What we’re looking for Senior level experience in software engineering with strong experience in Python, Java, or C# Proven track record of performance tuning in large-scale More ❯

a team of 4. Ideally you will have indepth knowledge of the Temenos Transact (T24) data structure and the ability to develop and administer Microsoft SQL Server administration , and performance tuning, with a strong ability to work independently and translate business requirements into robust data solutions. Key Responsibilities Design, develop, and maintain SQL Server databases, stored procedures, views … triggers, and functions. Gather, analyse, and interpret user requirements to design and deliver effective database solutions with minimal supervision. Administer, monitor, and optimise SQL Server environments, ensuring availability, performance, and security. Implement and manage database backup, recovery, and disaster recovery strategies. Support application teams in integrating and accessing data efficiently. Troubleshoot and resolve database issues, including performance bottlenecks … Transact (T24) data structures and core banking systems. Experience in SQL Server development and administration (SQL Server 2016 or later). Strong proficiency in T-SQL, database design, and performance tuning. Proven experience in database administration, including security management, backup/recovery, and maintenance planning. Ability to independently gather and analyse requirements and translate them into technical database solutions. More ❯

scalable, and perform optimally Monitor and manage these aspects while taking responsibility for multiple cloud infrastructure services Observing systems will be key to prioritising the operational service improvements and performance improvements to meet/exceed SLOs (Service Level Objectives) The role will be responsible to the Principal Specialist Engineer SRE and is part of the High Performance Computing …/AI) & research computing unit whose remit is to: Architect, develop & manage multi-cloud HPC platforms and on-premise infrastructure Ensure services are highly available, scalable and resilient Managing performance, capability and capacity planning Support UKHSA's AI requirements This role attracts a Market Pay Supplement of up to £5,000. Main duties of the job Ensure services are … respond to issues. Leverage automation to streamline tasks, reduce overhead on repeatable operations, reduce manual intervention and improve efficiency. Write code that is maintainable, clear, and concise. Optimise system performance using strong problem-solving skills to identify bottlenecks with an engineering mindset. Ensure systems can handle current and future workloads through automation and capacity planning. Continuously improve services through More ❯

GitHub Actions. Snowflake (on Azure or multi-cloud): Warehousing design, Streams & Tasks, Snowpipe/Snowpipe Streaming, Time Travel & Fail-safe, RBAC & row/column security, external tables over ADLS, performance tuning & cost governance. Kafka/Streaming: Confluent Platform/Cloud, Kafka Streams/Spring Kafka, ksqlDB, Schema Registry (Avro/Protobuf), Kafka Connect (Debezium CDC), MirrorMaker 2; patterns More ❯

electronic and competitive landscape, Citi is key player due to its leading eTrading platform and investment in technology. The FI eTrading team is at the forefront, by building high-performance low latency technology that supports the execution of billions of dollars of client trades every day. Our competitive advantage is our technology and having a platform that provides exceptional … Experience designing and implementing message-driven systems for reliable, asynchronous processing in low-latency, high-throughput, distributed environments. Extensive experience with Linux environments, including system administration, shell scripting, and performance tuning. Proficient in multithreading, concurrency and performance tuning Experience of the following technical areas Caching technologies e.g. Gemfire, Redis or others Middleware: Tibco, Solace or other Java … the context of financial systems. Experience with microservices architecture and containerization (e.g., Docker, Kubernetes). Nice to have Hands-on experience in designing and developing secure, scalable, and high-performance financial applications. Understanding of financial concepts such as payments, transactions, trading, risk management, and financial reporting. Proficiency in working with financial protocols (e.g., FIX) and integration with external financial More ❯

great benefits package! Join a leading financial services team as a skilled SQL Server Developer/Database Administrator . You’ll design, develop, and optimise SQL Server databases, ensuring performance, reliability, and security. Requirements: 5+ years’ SQL Server development & admin (2016+) Strong T-SQL, performance tuning, SSIS/SSRS/Power BI Excellent problem-solving & communication skills More ❯

with OWASP Top 10 and security standards. Support Provide 2nd and 3rd line support across Dynamics CRM applications. Manage incidents, service requests, and changes following ITIL processes. Monitor CRM performance and proactively resolve operational issues Skills & Experience Required Essential Proven technical expertise in Dynamics 365 CE configuration and customisation. Hands-on with Power Platform including Power Apps, Power Automate … SCRUM and OWASP principles. Excellent stakeholder management, communication, and problem-solving skills. Desirable Exposure to Copilot and AI-driven tools . ITIL certification or experience working in ITIL environments. Performance tuning and data migration expertise. *Rates depend on experience and client requirements More ❯

reporting solutions, scalable semantic models, and end-to-end data workflows to support business and operational reporting. The ideal candidate will collaborate closely with stakeholders to build reliable, high-performance dashboards and data models aligned with strategic reporting needs. Key Responsibilities Design, develop, and optimize Power BI semantic models for large datasets (4–5 GB and above). Build … advanced DAX calculations using best practices for performance and maintainability. Perform data transformation using Power Query (M language). Integrate data from Snowflake, SQL Server, SharePoint, and other enterprise sources. Use Tabular Editor and DAX Studio for model optimization, versioning, and troubleshooting. Implement data model and report performance tuning techniques. Develop clean wireframes and intuitive dashboard layouts … with Power BI Desktop and Power BI Service. Advanced proficiency in: DAX M (Power Query) SQL Strong experience integrating and modelling data from Snowflake. Expertise in building scalable, high-performance semantic models. Proficiency with Tabular Editor and DAX Studio. Understanding of Power BI's calculation engine and performance optimization methods. Experience in large-scale distributed reporting environments. Strong More ❯

successful products that leverage terabytes of data. Ability to analyse technical requirements and design new architectures, data models, and ETL strategies. Expertise in database design, complex T-SQL programming, performance tuning, and index analysis. Hands-on experience with cloud-based relational and non-relational databases. Facilitate discussions among developers to exchange ideas and introduce innovative technologies. Evaluate emerging More ❯

daily by traders and middle office teams. These systems handle complex financial instruments, from bonds and repos to interest rate swaps and exotic portfolios, with a strong focus on performance, reliability, and traceability. Key Responsibilities: Design, develop, test, and deploy high-quality software using Java and related technologies Conduct code reviews, ensuring clean, maintainable, and efficient code Mentor junior … developers and promote technical excellence within the team Analyse and resolve performance, scalability, and concurrency issues Contribute to Agile/Scrum processes, including sprint planning and retrospectives Maintain clear and comprehensive technical documentation Key Requirements: Strong expertise in Core Java, including multi-threading and concurrency demonstrating self-sufficiency Proven experience in low-latency systems, performance tuning, and … network programming Familiarity with high-performance messaging systems Proficiency with profiling, benchmarking, and memory analysis tools Working knowledge of Linux/Bash scripting and at least one other language (e.g. Python or C#) Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates More ❯

daily by traders and middle office teams. These systems handle complex financial instruments, from bonds and repos to interest rate swaps and exotic portfolios, with a strong focus on performance, reliability, and traceability. Key Responsibilities: Design, develop, test, and deploy high-quality software using Java and related technologies Conduct code reviews, ensuring clean, maintainable, and efficient code Mentor junior … developers and promote technical excellence within the team Analyse and resolve performance, scalability, and concurrency issues Contribute to Agile/Scrum processes, including sprint planning and retrospectives Maintain clear and comprehensive technical documentation Key Requirements: Strong expertise in Core Java, including multi-threading and concurrency demonstrating self-sufficiency Proven experience in low-latency systems, performance tuning, and … network programming Familiarity with high-performance messaging systems Proficiency with profiling, benchmarking, and memory analysis tools Working knowledge of Linux/Bash scripting and at least one other language (e.g. Python or C#) Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates More ❯

and business analysts to ensure seamless integration and data quality Support presales activities including solution design, effort estimation, and client presentations Establish and promote best practices in data governance, performance tuning, and DevOps for BI Required Skills & Expertise: Proven experience delivering enterprise-grade Power BI solutions Implement robust data transformation and validation processes to ensure accuracy and alignment … with business definitions Collaborate with business analysts, data modellers, and reporting teams to ensure the curated data supports deeper insights into corporate performance Optimise data pipelines for scalability, reliability, and maintainability using best practices (e.g., modular ETL design, version control, CI/CD) Strong understanding of Microsoft Fabric architecture and components Expertise in Microsoft Fabric Data Engineering Fabric Dataflows More ❯

business systems, built in PHP (Laravel) with a PostgreSQL backend, alongside managing several WordPress -based websites. Working closely with stakeholders from across the organisation, you’ll ensure the reliability, performance and evolution of the systems that drive daily operations. You’ll also help guide the future technical roadmap, support junior developers as the team grows, and take ownership of … best practice, system architecture and deployment workflows. Key Responsibilities: Lead development and enhancements on internal business systems built with Laravel, PostgreSQL and Azure blobstore. Provide ongoing maintenance, debugging and performance tuning of applications and web environments. Deliver technical support to internal users, including managing high-pressure or time-critical issues. Maintain and evolve WordPress websites (plugins, themes, security … hardening). Administer and troubleshoot Linux-based hosting environments. Build, deploy and manage containerised applications using Docker. Configure and maintain Nginx for optimal performance and security. Support firewall configuration and troubleshooting across APIs, services and repositories. Manage Git-based version control and enforce workflow best practices (branching, PRs, code reviews, release tagging). Document architecture, workflows and development processes. More ❯

based web applications. Create and integrate RESTful APIs using XML/JSON formats. Write and optimize SQL/PLSQL queries for backend systems. Ensure high-quality code through testing, performance tuning, and troubleshooting. Collaborate with Agile teams and contribute to continuous improvement and DevOps practices. Deploy and support applications on WebSphere, Apache, or Tomcat servers. Required Skills: 9+ More ❯

global investment manager that’s serious about modern engineering and data-driven investing. Our client is looking for an experienced Senior/Principal Python Developer to help build high-performance systems that power investment decisions, analytics, and portfolio operations. The Opportunity Be part of a cross-functional engineering team working closely with quants, data scientists and portfolio managers to … Design, develop and maintain scalable Python applications supporting investment and analytics workflows. Translate complex financial requirements into elegant, maintainable code in partnership with business and quant teams. Lead on performance tuning, code quality, testing, and CI/CD practices. Improve latency, reliability and observability of data-driven processes. Contribute to modernising legacy systems towards cloud-native, distributed architectures. … Why Join Work for a respected global investment firm investing in technology and modern engineering practices. Hybrid working (London-based; typically 2–3 days in office ). Competitive salary, performance-based bonus and strong benefits. Inclusive, learning-focused culture where you can have real impact on investment systems. If you’re a hands-on Python engineer who enjoys solving More ❯

a large scale computing environment with both on-premise and cloud (AWS) based services. You'll collaborate with internal teams to optimise HPC platforms, with a focus on improving performance, resilience and observability of the compute infrastructure. You'll also contribute to continuous improvements initiatives, automating wherever possible and sharing your expertise with the team. Location/WFH: You … on large scale systems with 5000+ nodes and high levels of concurrency (100k+ tasks) You have experience of monitoring and visualisation of large scale systems You have experience with performance tuning of compute, network and storage components and a good understanding of the challenges of user authorisation in large scale distributed environments using AWS IAM and identity providers More ❯

ll bring... Strong understanding of Python, Azure, Databricks and SQL. Experience in building and optimising ETL or ELT pipelines. Knowledge of Delta Lake and Spark for data processing and performance tuning. The ability to adapt quickly, as you’ll be working across multiple client projects and sectors. Strong communication skills are essential – you’ll be the bridge between technical More ❯

technical leadership across development teams, ensuring high standards in code, design, and delivery. Integrate e-Invoicing platforms with ERP, payment gateways, and reporting systems. Design secure, scalable, and high-performance solutions using modern architectural frameworks (microservices, APIs, Middleware). Collaborate with business stakeholders, finance SMEs, and external vendors to deliver compliant and efficient solutions. Drive issue resolution, performance tuning, and continuous improvement across financial applications. Stay updated on regulatory changes, tax reforms, and emerging e-Invoicing technologies. Required Skills & Experience Strong experience in Oracle Fusion Financials focusing on AR, AP, and Tax modules. Proven expertise in e-Invoicing implementation. Solid understanding of solution architecture, including API management, integrations, and data pipelines. Experience in Banking or Financial More ❯

with the operational management of data platforms, including storage, protection, replication, and automation of data workflows Provide 2nd/3rd line support for Windows and Linux systems, managing updates, performance tuning, and configuration consistency What you’ll need to succeed: Experience supporting hybrid cloud environments (Azure and VMware) Strong understanding of automation, scripting, and configuration management tools Familiarity More ❯

expertise (production-level) ✔ Strong Node.js experience ✔ Proven experience shipping LLM-based products ✔ Real examples of: RAG systems Multi-agent or agentic workflows Embeddings & vector databases LLM orchestration Model evaluation & performance tuning ✔ Ability to architect from scratch in a lean environment Background ✔ Recent startup/scaleup experience (Seed–Series C preferred) ✔ Strong academic record UK: Russell Group/Top More ❯