1 to 25 of 178 Performance Tuning Jobs in London

Team Join Citi's Equities Smart Order Router team, a core part of our Front Office Technology, driving innovation in electronic trading. This established team builds and maintains high-performance, low-latency, high-throughput applications vital for optimizing liquidity sourcing across global markets. You will provide end-to-end SDLC support, developing and enhancing critical trading components. This involves … collaboration with Product teams on requirements, Quants for algorithm implementation, and Production Support to ensure platform stability. Our team thrives on solving complex challenges at the intersection of high-performance computing and intricate trading strategies. If you're passionate about building cutting-edge financial technology with direct market impact, this role offers an exciting opportunity within a highly collaborative … will you do: End-to-End SDLC Ownership: Drive the full Software Development Life Cycle for the Equities Smart Order Router, from design to deployment, ensuring robust and high-performance solutions. Global Collaboration: Work intimately with key stakeholders and colleagues across global regions, including product teams, quantitative analysts, and other engineering groups. Critical L3 Support: Provide essential Level More ❯

department. MAIN RESPONSIBILITIES Database estate administration and monitoring Managing application system Disaster Recovery and high availability Managing backup and recovery strategies/automation of maintenance and batch processing Database performance tuning including TSQL/Procedural performance tuning (Optimizer and Index usage) Database design and architecture, development and administration Setting up best practice database development and acting … in a constructive manner Strong analytical skills Data Modelling Relational Database Design Database Application Development Microsoft - SQL Server/Transact SQL Server/Data Warehousing & Reporting PowerShell, DOS Database performance tuning Degree in Computer Science/Information Systems Design or equivalent Desirable: Knowledge of Fuel oil and the Bunker Industry desirable More ❯

department. MAIN RESPONSIBILITIES Database estate administration and monitoring Managing application system Disaster Recovery and high availability Managing backup and recovery strategies/automation of maintenance and batch processing Database performance tuning including TSQL/Procedural performance tuning (Optimizer and Index usage) Database design and architecture, development and administration Setting up best practice database development and acting … in a constructive manner Strong analytical skills Data Modelling Relational Database Design Database Application Development Microsoft - SQL Server/Transact SQL Server/Data Warehousing & Reporting PowerShell, DOS Database performance tuning Degree in Computer Science/Information Systems Design or equivalent Desirable: Knowledge of Fuel oil and the Bunker Industry desirable More ❯

governance of our Oracle database estate, with a specific focus on Oracle Exadata platforms. Based in our London office, this role is central to our mission to deliver high-performance, scalable, and secure database services to support critical business applications. As a strategic and hands-on role, the Oracle Database Architect will shape our database infrastructure strategy, advise on … Exadata performance tuning and capacity planning, and work closely with developers, infrastructure teams, and business stakeholders to ensure robust and future-proof database solutions. Knowledge Skills and Abilities, Key Responsibilities: Serve as the technical authority for the design, architecture, and performance of Oracle database platforms , with an emphasis on Exadat a for Production workloads. Deliver and maintain … use of Oracle technologies. Lead the implementation, maintenance and optimisation of Oracle platforms, including smart scans, hybrid columnar compression, and storage indexes. Define and enforce best practices around database performance tuning, high availability, disaster recovery, and capacity planning. Work collaboratively with application teams to align data architecture with application performance and scalability goals. Design and review data More ❯

Dynamics D365 Performance Engineer - Outside IR35 A number of D365 Performance Engineers are required for a public sector client. You will have extensive experience of D365 CE/CRM and Power Platform. Skills: D365 CE/CRM Power Platform Azure - IaaS/PaaS services .Net, C#, Javascript, TypeScript Strong knowledge of Performance tuning in D365 implementations … Responsibilities: Focus on owning and managing performance improvements in D365 implementations Design and implement performance tuning strategies Analyse telemetry, logs, and metrics to identify and improve performance in customizations, integrations, and infrastructure. Lead performance testing and optimization initiatives across the CRM platform The role is for 6 months initially and based from home with ad More ❯

We are looking for a passionate and analytical SAP Performance Engineerto join our growing NFT SAP practice in the UK. This role is ideal for someone who thrives in cross-functional environments, is deeply knowledgeable in SAP performance tuning, particularly with S/4HANA and is driven to optimize large-scale enterprise systems for scalability, resilience, and … speed. You will play a key role inanalysing performance issues, troubleshooting bottlenecks, and designing robust solutionsacross SAP landscapes, with exposure to cutting-edge technologies like SAP BTP, cloud platforms (AWS/GCP), Docker, and Kubernetes. Primary Responsibilities: Collaborate with functional and technical teams to diagnose and resolve SAP system performance challenges. Design and execute performance benchmarking strategies … for SAP S/4HANA and integrated systems. Provide technical recommendations on system tuning, database optimization, and workload distribution. Conduct end-to-end performance tests and simulate real-world scenarios using tools like LoadRunner and JMeter. Use profiling and tracing tools (e.g., SAP ST03N, STAD, ST12, HANA PlanViz) to identify and isolate bottlenecks. Work on continuous performance More ❯

and tested according to established best practice principles Work with a team of Database developers to ensure projects are delivered in a timely fashion Monitor system's health and performance Ensure high levels of performance, availability, sustainability and security Analyse, solve, and correct issues in real time Ensure reviews are conducted on a regular basis to improve/… does not impact on agreed product deliverables. Database Troubleshooting and Maintenance Maintain data integrity and security (manage roles and permissions of database users). Generate traces, execution plans, identify performance issues, deadlocks/contention and resolve them. Keep abreast of technology trends and how they apply to your area. Put forward suggestions for improvement to processes or tools where … software engineering/DB discipline and/or Professional qualifications appropriate to DB engineering roles. Experience of large transactional databases (100GB+) Excellent knowledge of the SQL Database Engine Excellent performance tuning skills (experience of Query Tuning, Indexing, Locking etc). Excellent communication skills - both to a technical and non-technical audience. Experience in engaging at a commercial More ❯

domain. This hybrid role is based in the UK or US and offers the opportunity to build scalable, real-time services using modern technologies. If you're passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities : Design, develop, and optimize low … time data management. Collaborate with DevOps, Product, and QA teams to ensure production-grade solutions. Participate in architectural discussions, advocate for best practices, and provide mentorship to peers. Drive performance tuning, fault tolerance, and observability improvements across services. Required Skills & Experience: 5+ years of experience in Core Java development with a focus on performance and memory optimization. … banking systems. Strong communication skills and a bias toward action and opinionated design decisions. Nice to Have : • Familiarity with messaging systems (Kafka, RabbitMQ, etc.) Exposure to container security and performance tuning on OpenShift. Knowledge of payment gateways, ISO 20022, or SWIFT formats. • Collaborative, fast-paced, and engineering-driven culture. • Emphasis on engineering autonomy, architectural decision-making, and clean More ❯

process and enable teams to maximize automation in the CI/CD pipeline. Moreover, you will be a hands-on participant in architecture proof of concepts, innovation initiatives, and performance tuning activities. Researching/analyzing emerging technologies, as well as designing and advocating new technologies, architectures, and products in collaboration with system and service owners is part of …/CD and related DevSecOps practices, working with cloud-based platforms such as Azure or AWS Strong software design & development principles, with a focus on system stability, reusability and performance optimized for a global audience Strong understanding of application testing, diagnostics, and performance tuning Strong understanding of TDD and BDD methodologies. And workable knowledge of Data ingestion More ❯

PL/SQL development and has a strong background in relational data modeling. The ideal candidate will be responsible for designing, developing, and maintaining Oracle database applications, ensuring optimal performance and reliability. Responsibilities Design, develop, and maintain Oracle database applications using PL/SQL. Create and optimize complex SQL queries, stored procedures, functions, and triggers. Develop and implement relational … data models to support business requirements. Collaborate with cross-functional teams to gather and analyze requirements and translate them into technical specifications. Perform database performance tuning and optimization to ensure efficient data retrieva and processing. Conduct code reviews and provide constructive feedback to ensure code quality and adherence to best practices. Troubleshoot and resolve database-related issues, ensuring … SQL development. Strong knowledge of relational data modeling and database design principles. Proficiency in writing and optimizing complex SQL queries, stored procedures, functions, and triggers. Experience with Oracle database performance tuning and optimization techniques. Familiarity with Oracle tools and utilities such as SQL Plus, SQL Developer, and Oracle Enterprise Manager. Ability to work in a fast-passed Fintech More ❯

and massive CPU and GPU clusters in globally distributed data centers. As such, this is a high-impact role with broad scope, from HPC/AI cluster design and performance tuning, to troubleshooting and automation for thousands of nodes. Responsibilities Design, build, and optimize large-scale distributed GPU compute clusters Identify and resolve GPU workloads' performance bottlenecks … vendors to resolve complex issues Qualifications 5+ years of experience in large-scale Linux systems engineering in HPC, AI or distributed infrastructure roles. Extensive experience in Linux system installation, performance tuning, and troubleshooting Expertise in troubleshooting distributed GPU workloads Deep knowledge around GPU optimization and performance Proficiency in Python scripting and automation frameworks CUDA or C/… by high-impact work Annual base salary range of $200,000 to $300,000. Pay may vary depending on job-related skills and experience. A sign-on and discretionary performance bonuses may also be provided as part of the total compensation package, in addition to company-paid medical and/or other benefits. Culture Hudson River Trading (HRT) brings More ❯

as primary technical authority for Oracle database architecture with a specialized focus on Oracle Exadata platforms Lead deployment, configuration, and optimization of Oracle platforms, leveraging advanced features while establishing performance tuning methodologies and disaster recovery protocols Design data models, physical schemas, and partitioning strategies for high-volume workloads while overseeing database upgrades and patch deployment with minimal disruption … processing and high-frequency data operations Extensive experience with Oracle Exadata platforms, including configuration, optimization, and troubleshooting Hands-on expertise with Oracle RAC, Data Guard, ASM, RMAN, and advanced performance tuning techniques Deep understanding of Oracle database architecture, including advanced features and optimization techniques Experience with Oracle Enterprise Manager (OEM) for installation, upgrades, administration, and monitoring Knowledge of More ❯

and technical stakeholders to capture and refine business and technical requirements Translate high-level discussions into structured documentation and user stories Work closely with DBAs and architects to optimise performance and scalability Ensure alignment with industry-standard data quality profiling frameworks and dimensions (e.g., completeness, accuracy, consistency) Support solution testing and deployment in both development and production environments Skills … data-centric applications Strong Business Analysis (BA) capabilities: Self-starter with the ability to independently engage SMEs and document requirements Oracle PL/SQL: Solid coding and troubleshooting skills; performance tuning and DBA knowledge is a strong advantage Experience with Avaloq: Familiarity with Avaloq's physical data layer is essential Knowledge of data quality frameworks: Understanding of profiling … Nice to have Experience with Avaloq Reporting & Data Extracts (ARD, ADF, SmartView): Familiarity with Avaloq-specific data export or reporting mechanisms would help accelerate development. Knowledge of Oracle Database Tuning/Performance Diagnostics: In-depth understanding of execution plans, indexes, and session performance tools. Experience with Data Quality Tools or Frameworks: Exposure to tools like Informatica DQ More ❯

a primary focus on MongoDB. Your mission is to lead database administration efforts, define the MongoDB roadmap, and collaborate with IT Operations and other stakeholders to ensure the availability, performance, and security of our database systems. We are looking for a candidate who is passionate about database technologies and values collaboration, innovation, and continuous learning. You should have a … will count on you to: Lead the design, implementation, and maintenance of MongoDB database systems. Develop and enforce database security measures, policies, and best practices. Monitor and optimize database performance to ensure high availability, scalability, and efficient resource utilization. Collaborate with development teams on database-related activities, including schema changes, data migrations, and performance tuning. Troubleshoot and resolve … installation, configuration, and maintenance. Strong understanding of database concepts, principles, and best practices. Extensive experience with scripting languages such as PowerShell, Bash, and SQL. In-depth knowledge of database performance tuning and optimization techniques. Expertise in database security measures and best practices. Experience with backup and recovery procedures, including point-in-time recovery and disaster recovery planning. Proven More ❯

IT modernization, security, and analytics, DXC enables enterprises to thrive in a rapidly evolving digital landscape. Our clients rely on us to provide end-to-end solutions that improve performance, security, and scalability across their IT infrastructure. Job Summary: As a Senior Database Administrator (DBA) at DXC Technology, you will be responsible for designing, implementing, and maintaining robust database … solutions that support enterprise infrastructure services. This role involves working with cloud and on-premises databases, ensuring high availability, security, and performance while supporting database migrations, automation, and modernization efforts. You will collaborate with cross-functional teams to optimize database architectures and contribute to the continuous improvement of infrastructure services. Key Responsibilities: Lead and manage database infrastructure services, including … deployment, migration, and administration of databases (SQL, Oracle, PostgreSQL, etc.). Ensure high availability, security, and optimal performance of database environments. Support the development and execution of database infrastructure strategies and modernization projects. Monitor and maintain database health, backups, disaster recovery, and performance tuning. Collaborate with cross-functional teams to align database solutions with business and IT requirements. More ❯

the maintenance and optimization of our PostgreSQL databases hosted on the AWS Cloud platform. The successful candidate will collaborate with cross-functional teams to ensure database reliability, availability, and performance, while also contributing to the overall architecture and strategy of our cloud-based database solution. 1. Database Design and Architecture: • Collaborate with software engineers, DevOps, and infrastructure teams to … AWS RDS, considering factors such as instance sizing, storage, and security. • Implement and manage replication, clustering, and backup/recovery strategies to ensure high availability and disaster recovery. 3. Performance Monitoring and Optimization: • Monitor database performance, proactively identifying and resolving performance bottlenecks, slow queries, and other issues affecting system responsiveness. • Tune database parameters, indexes, and queries for … e.g., AWS Certified Database - Speciality). In-depth knowledge of PostgreSQL database internals, architecture, and best practices. Proficiency in SQL, PL/pgSQL, and query optimization. Experience with database performance tuning and monitoring tools. Knowledge of containerization and orchestration technologies (Docker, Kubernetes). Familiarity with database security practices and compliance standards. Scripting and automation skills using languages like More ❯

premise, cloud, and hybrid environments. Evaluate and adopt new database technologies, tools, and automation platforms. Design and review database solutions for backup, high availability (HA), disaster recovery (DR), and performance optimization. Lead capacity planning, performance tuning, and proactive issue resolution to ensure system reliability and scalability. Collaborate closely with cross-functional teams including application engineering, cloud DevOps More ❯

in-class products and solutions, and unparalleled access to capital and liquidity. What we do: Citi Markets Technology powers the global financial markets by providing innovative, robust, and high-performance technology solutions. We are undergoing a significant transformation, modernizing our core platforms to support high-volume, low-latency transactions and drive business growth. What you will do: As a … effective solutions. Identify and mitigate potential risks related to systems, processes, and regulatory compliance. System Optimization: Identify system bottlenecks and deficiencies, devising and implementing robust solutions to enhance resiliency, performance, and scalability. Provide technical consultation for performance testing and tuning. Required Skills & Qualifications: Education: BS/MS degree in Engineering, Computer Science, or equivalent. Experience: Experience in Capital … patterns, with a proven track record of legacy modernization. Experience with distributed environments and anti-patterns. Databases: Expert knowledge of Oracle RDBMS design (PL/SQL, stored procedures, triggers, performance tuning) and experience with NoSQL (MongoDB, Cassandra). Experience migrating RDBMS to cloud/NoSQL is a significant plus. Middleware: Hands-on experience with Tibco EMS, Kafka, MQ More ❯

business is actively expanding as there is additional headcount for a number trade platform specialist Java Development with a focus on either/or Quantitative Development or low-latency performance optimization. You will be working on greenfield projects to build out and enhance their low latency trading systems. THE ROLE: Working in a fast-paced trading environment as a … tune trading strategies across both spot and derivative markets. Based directly on the trading floor, you will play a crucial role in enhancing execution logic, automating workflows, and ensuring performance at scale for a high-frequency, multi-exchange setup. You will focus on optimising every component of the trading stackincluding multi-threading, network communication, order processing, and execution logicto … achieve ultra-low latency and high throughput. Robust monitoring, alerting, and performance tracking ensure system reliability. The team has deep expertise in trading protocols, messaging systems, network architectures, and concurrent computing to support a complex, high-frequency trading landscape. KEY RESPONSIBILITIES: Build and refine algorithmic trading models for use across various digital asset exchanges Improve and maintain dynamic hedging More ❯

overseeing database systems that are integral to our trading infrastructure. The successful candidate will lead by example, combining technical expertise with strong leadership to ensure the highest levels ofstability,performance, andscalabilityacross our database platforms. The primary database platforms in use includeMicrosoft SQL Server,PostgreSQL,MongoDB, andMySQL, with critical systems also running onOracleandSybase. The candidate will be expected to work … functionality for end users. Key Responsibilities Leadership & Hands-On Contribution :Lead, mentor, and manage a global team of 15 engineers, fostering collaboration and accountability.Actively participate in technical problem-solving, performance tuning, and architecture decisions. Database Infrastructure Stability & Performance :Ensure the stability, performance, and availability of mission-critical database systems supporting trading infrastructure.Proactively identify and resolve performance More ❯

database systems that are integral to our trading infrastructure. The successful candidate will lead by example, combining technical expertise with strong leadership to ensure the highest levels of stability, performance, and scalability across our database platforms. The primary database platforms in use include Microsoft SQL Server, PostgreSQL, MongoDB, and MySQL, with critical systems also running on Oracle and Sybase. … for end users. Key Responsibilities Leadership & Hands-On Contribution : Lead, mentor, and manage a global team of 15 engineers, fostering collaboration and accountability. Actively participate in technical problem-solving, performance tuning, and architecture decisions. Database Infrastructure Stability & Performance : Ensure the stability, performance, and availability of mission-critical database systems supporting trading infrastructure. Proactively identify and resolve … performance bottlenecks and operational risks. Strategic Projects : Drive the migration of the database estate to unified standards across platforms. Lead the implementation of automation and self-service tools to empower end users. Collaboration & Communication : Work closely with trading, technology, and operations teams to understand and address database needs. Communicate technical concepts effectively to diverse stakeholders. Required Skills & Experience Extensive More ❯

client based in London. It is hybrid and will require 3x days onsite per week. You will design, optimize, and maintain Oracle-based data warehouse solutions to ensure high performance, scalability, and alignment with business intelligence and analytics needs. This role requires the individual to design and optimize Oracle-based data warehouse systems, ensuring they are scalable, high-performing … and aligned with business analytics needs. They will collaborate closely with the head of the data team and .NET developers, applying advanced data modelling, performance tuning, and problem-solving skills. The ideal candidate will be able to translate complex technical insights into clear, actionable recommendations for both technical and non-technical stakeholders. Skills Required: Strong experience in designing … and developing efficient ETL processes to support enterprise-scale Oracle Data Warehouse environments. Proven ability to optimize and tune complex SQL and PL/SQL scripts for performance, while guiding development teams on best practices for data modelling, indexing, and partitioning strategies. Skilled in troubleshooting and resolving issues in ETL workflows and data pipelines, with a focus on maintaining More ❯

client based in London. It is hybrid and will require 3x days onsite per week. You will design, optimize, and maintain Oracle-based data warehouse solutions to ensure high performance, scalability, and alignment with business intelligence and analytics needs. This role requires the individual to design and optimize Oracle-based data warehouse systems, ensuring they are scalable, high-performing … and aligned with business analytics needs. They will collaborate closely with the head of the data team and .NET developers, applying advanced data modelling, performance tuning, and problem-solving skills. The ideal candidate will be able to translate complex technical insights into clear, actionable recommendations for both technical and non-technical stakeholders. Skills Required: Strong experience in designing … and developing efficient ETL processes to support enterprise-scale Oracle Data Warehouse environments. Proven ability to optimize and tune complex SQL and PL/SQL scripts for performance, while guiding development teams on best practices for data modelling, indexing, and partitioning strategies. Skilled in troubleshooting and resolving issues in ETL workflows and data pipelines, with a focus on maintaining More ❯

fast and reliable delivery of cloud services. Work closely with DevOps, engineering teams, product management, and stakeholders to ensure that architectural strategies align with both technical and business objectives. Performance & Cost Optimisation: Drive performance tuning, cost optimisation, and cloud resource management strategies to maximise efficiency and minimise cloud spend. Risk Management: Identify and mitigate technical risks in More ❯

The Trading Infrastructure team is building a high-performance, front-to-back Trading Platform that supports multi-asset trading. The platform is designed to handle financial instruments with low-latency execution, robust risk controls, and seamless integration across trading, risk, operations, and finance workflows. The system is built with a modular architecture encompassing core components such as market data … and fully deterministic design principles to ensure traceable and predictable system behavior. Collaborate closely with product and trading teams to translate requirements into performant, production-ready solutions. Participate in performance profiling, JVM tuning, and debugging complex issues in production. Develop and maintain automated test suites and CI/CD pipelines. Engage in code reviews, architecture discussions, and technical … designing fully deterministic systems. Solid knowledge of time-series and analytical databases like ClickHouse; exposure to kdb+ or InfluxDB is a plus. Experience with distributed systems, message queues, and performance tuning at the network and application layer. Comfortable using AI-powered development tools to enhance code quality and development speed. Strong testing discipline including TDD, benchmarking, and resilience More ❯