1 to 25 of 247 Performance Tuning Jobs in London

Senior Database Engineer - Postgres

Location
Greater London, England, United Kingdom
will be responsible for implementation, support and maintenance of mission critical database environments. The administration of these environments includes clustering, storage, securing, monitoring, performance tuning, troubleshooting, and disaster recovery. This person will help manage and support current and future database and storage environments and initiatives, and proactively evaluate … with the dynamic and growing business needs of DRW. Responsibilities: Proactively manage and optimize various database platforms and related OS environments Perform database performance and query tuning Implement and maintain production and non-production databases Perform database backups, restores, log shipping, mirroring and replication, etc. Work with system ...

Senior Database Administrator Leading Financial

Hiring Organisation
Stream Search Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£95,000
ownership of a diverse database estate supporting critical trading and operational systems within a leading financial exchange technology environment. Youll be responsible for database performance, availability, security, upgrades, backups, recovery and migrations , while working closely with developers and infrastructure teams. Key Responsibilities Own and manage the database environment. Ensure … high availability, performance, reliability and security. Performance tuning, monitoring and troubleshooting. Manage upgrades, patching, backups and recovery. Support schema design, SQL optimisation and integrations. Manage database access, permissions and compliance. Act as the escalation point for database issues. Build and optimise SQL queries for Grafana and reporting. ...

Senior Software Engineer – Ultra Low Latency Risk Engine Developer

Location
Greater London, England, United Kingdom
components that sit directly in the cash equities trading hot path, ensuring pre-trade and real-time risk controls are enforced with microsecond-level performance while maintaining correctness and resiliency at scale. This is a hands‐on, deeply technical role that also carries leadership responsibilities — mentoring engineers, driving architecture … Engine responsible for real-time pre-trade risk checks, position limits, and exposure controls across cash equities electronic execution flows. Architect and optimize high-performance, lock-minimal, multi-threaded components capable of processing risk decisions in the sub-microsecond to low-microsecond range. Integrate risk and position components with ...

Senior Performance Support Specialist

Hiring Organisation
Unit4
Location
Greater London, United Kingdom
Employment Type
Full Time
people by providing them with the right tools to achieve the autonomy they need - it's what makes us unique Key Tasks and Responsibilities Performance tuning of Unit4 Financials by Coda Pre and Post Go Live. Troubleshoot performance issues across new implementations (Project) and existing implementations … Unit4 Financials by Coda, this includes Technical and Application aspects. Develop enhanced, proactive monitoring, detection and remediation of performance issues. Develop proactive, continuous performance tuning and processes to maintain optimal performance levels. Comply with the Company's information security requirements and all Company business procedures ...

DB2 Database Administrator (DBA)

Location
Greater London, England, United Kingdom
resolution of database-related incidents and problems. Demonstrate strong analytical and problem-management capabilities to resolve complex technical issues. Provide consulting services on database performance monitoring, tuning, capacity planning, and optimization. Coordinate with development teams during project implementations and release cycles. Participate in infrastructure modernization, technical initiatives … Required Qualifications Typically 8-12 years Hands‐on experience in IBM z/Mainframe environments with strong expertise in DB2 Database Administration, database support, performance tuning, security implementation, automation, disaster recovery, and production support. Deep understanding of Db2 database architecture, administration, backup and recovery procedures. Experience in production ...

ServiceNow GRC Architect

Location
Greater London, England, United Kingdom
integrations, and innovative customizations. Technical Advisory & Governance Act as a subject matter expert and trusted advisor to clients and internal teams on platform capabilities, performance, scalability, and security. Establish governance frameworks to ensure technical consistency, integrity, and adherence to platform best practices. Requirements Analysis & Solution Design Collaborate with business … SOAP, JDBC, and MID Server technologies. Technical Oversight & Quality Assurance Provide technical direction to development teams, ensuring compliance with design patterns, coding standards, and performance guidelines. Conduct code reviews, ensure solution quality, and oversee technical delivery milestones. Prototyping & Demonstrations Lead the creation of technical prototypes and conduct platform demonstrations ...

DBA Lead

Location
City Of London, England, United Kingdom
//risk.lexisnexis.com/insurance About our Team The Database Administration team provides enterprise-wide support for mission-critical database platforms, ensuring high availability, performance, security, and operational stability. The team manages MySQL, SQL Server, PostgreSQL, Oracle, and cloud database technologies across hybrid environments while driving automation, observability, disaster … members to provide technical designs and guidance to the Database Operations team. Take responsibility for the implications and impact of technical design decisions. Resolve performance issues and support root cause resolution. Perform thorough impact analysis for assigned database infrastructure activities and understand their effect on business operations. Respond ...

Oracle Database Engineer - up to £90,000 + Bonus - Hybrid

Location
City Of London, England, United Kingdom
hire an experienced Oracle Database Engineer for their database and platform engineering team. This is a hands-on position covering Oracle administration, automation and performance engineering across large-scale Exadata and cloud environments, including Autonomous Exadata Cloud@Customer. The Oracle Database Engineer role suits an Oracle professional who wants … move beyond routine administration into platform engineering: building automation that removes manual overhead, tuning at scale, and owning multi-tenant database architecture across mission-critical systems. About the role - Oracle Database Engineer (Oracle DBA): Build automation tooling and platform solutions using Ansible and scripting to reduce manual work across ...

Lead Data Engineer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
Design scalable, reusable data processing and data quality frameworks using Python, PySpark, and dbt Build and optimize batch and streaming data pipelines with strong performance, fault tolerance, and observability Develop and operate workflow orchestration (e.g., Apache Airflow) to schedule, monitor, and manage data movement and transformations Model and transform … data for analytics using SQL and dbt to support business intelligence and reporting workloads Write production-grade Python/PySpark code with disciplined testing, performance tuning, and maintainable object-oriented design Implement infrastructure-as-code (e.g., Terraform) to provision and manage cloud-based data platform components Containerize ...

Lead Data Engineer

Location
London, United Kingdom
Design scalable, reusable data processing and data quality frameworks using Python, PySpark, and dbt Build and optimize batch and streaming data pipelines with strong performance, fault tolerance, and observability Develop and operate workflow orchestration (e.g., Apache Airflow) to schedule, monitor, and manage data movement and transformations Model and transform … data for analytics using SQL and dbt to support business intelligence and reporting workloads Write production-grade Python/PySpark code with disciplined testing, performance tuning, and maintainable object-oriented design Implement infrastructure-as-code (e.g., Terraform) to provision and manage cloud-based data platform components Containerize ...

Lead Data Engineer

Location
Westminster, West End, United Kingdom
Design scalable, reusable data processing and data quality frameworks using Python, PySpark, and dbt Build and optimize batch and streaming data pipelines with strong performance, fault tolerance, and observability Develop and operate workflow orchestration (e.g., Apache Airflow) to schedule, monitor, and manage data movement and transformations Model and transform … data for analytics using SQL and dbt to support business intelligence and reporting workloads Write production-grade Python/PySpark code with disciplined testing, performance tuning, and maintainable object-oriented design Implement infrastructure-as-code (e.g., Terraform) to provision and manage cloud-based data platform components Containerize ...

Forensic DBA ( SC Cleared )

Location
Greater London, England, United Kingdom
standard for how the programme logs, audits and recovers its data. Key Responsibilities Investigate data incidents, such as unexpected changes, deletions, corruption, performance failures and suspected misuse, and establish the root cause. Reconstruct events using transaction logs, WAL archives, point-in-time recovery (PITR), audit logs and replication streams. … Advise on audit and logging design (for example pgaudit and database activity monitoring) so future incidents can be traced. Support live incident response, including performance tuning and fault finding on production databases. Review backup, disaster recovery, replication and archiving arrangements. Support database migrations and upgrades, including near-zero ...

PostgreSQL Specialist (SC Cleared)

Hiring Organisation
scrumconnect ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
standard for how the programme logs, audits and recovers its data. Key Responsibilities Investigate data incidents, such as unexpected changes, deletions, corruption, performance failures and suspected misuse, and establish the root cause. Reconstruct events using transaction logs, WAL archives, point-in-time recovery (PITR), audit logs and replication streams. … Advise on audit and logging design (for example pgaudit and database activity monitoring) so future incidents can be traced. Support live incident response, including performance tuning and fault finding on production databases. Review backup, disaster recovery, replication and archiving arrangements. Support database migrations and upgrades, including near-zero ...

Platform Engineering Specialist - Database Infrastructure

Hiring Organisation
TurleyWay Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
passionate about building and operating highly scalable database platforms? Have you administered and optimised mission-critical PostgreSQL environments in cloud-first organisations, ensuring performance, availability and resilience at scale? Can you demonstrate broad technical knowledge across Platform Engineering, DevOps and Infrastructure, alongside experience with automation and scripting using Python … technology landscape. This is an opportunity to become a technical authority for database infrastructure, helping shape the future of the database platform whilst improving performance, resilience, scalability and operational efficiency. A selection of your key responsibilities will include administering and optimising large-scale PostgreSQL environments, managing connection pooling ...

Senior Java Developer (Low-Latency & JVM Performance)

Location
Greater London, England, United Kingdom
Project description Join a global technology team developing high-performance, low-latency platforms supporting critical trading and real-time processing workflows. The project focuses on building event-driven and reactive Java systems designed to operate at high frequency with demanding latency and throughput requirements.The environment combines advanced JVM performance … engineering, concurrency, networking, and Linux optimization. The team works close to the hardware and operating-system level, optimizing memory utilization, network communication, and application performance to deliver highly efficient and reliable systems. Responsibilities - Design and develop high-performance, low-latency applications using Core Java.- Perform advanced JVM profiling ...

Senior Data Engineer

Location
Greater London, England, United Kingdom
using Azure Data Factory and Databricks,replacing legacy SSIS pipelines. Identifying opportunities toharden and automate manual steps within the Finance Close workflow ConductT-SQL performance tuning across on-prem and cloud environments.ConductT-SQL performance tuning across on-prem and cloud environments. Collaboratewith IT and business stakeholders ...

Principal Java Developer

Location
Greater London, England, United Kingdom
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 … with DevOps, Product, and QA teams to ensure production‐grade solutions. Drive architectural changes, advocate for best practices, and provide mentorship to peers. Drive performance tuning, fault tolerance, and observability improvements across services. Required Skills & Experience: 10+ years of experience in Java development with a focus on performance ...

Principal Engineer

Location
Greater London, England, United Kingdom
production-grade Lakehouse implementations using technologies such as Unity Catalog, Delta Live Tables, MLflow and Lakeflow. Own the hardest technical problems on an engagement - performance tuning, complex migrations, scale and reliability. Set engineering standards for code quality, testing, observability and reusability across delivery teams. Build reusable frameworks, accelerators … experience delivering enterprise data platforms or analytics solutions. Strong commercial experience building and delivering Databricks solutions in production. Deep expertise in Apache Spark, including performance tuning and optimisation at scale. Expert-level Python and SQL, with a track record of writing production-quality, well-tested code. Strong understanding ...

SQL Developer

Hiring Organisation
Bromcom Computers Plc
Location
Bromley, London, United Kingdom
Employment Type
Permanent
Migration (c. 40%) Design, develop and maintain scalable SQL Server T-SQL solutions and related tools for data cleansing, migration and reconciliation. Provide database performance-tuning expertise for internal and third-party systems, using AI tooling where appropriate. Define technical requirements with non-technical colleagues in the Data … person. Essential Skills Practical experience with AI coding assistants and strong prompting skills, supported by examples. Strong SQL Server T-SQL development and performance tuning, including experience supporting SQL Server in a large-scale environment. Experience with Git and version control. Excellent teamwork, communication and documentation skills. Desirable ...

SQL Developer – AI Prompting & Context Engineering

Location
London Borough of Bromley, England, United Kingdom
Migration (c. 40%) Design, develop and maintain scalable SQL Server T-SQL solutions and related tools for data cleansing, migration and reconciliation. Provide database performance-tuning expertise for internal and third-party systems, using AI tooling where appropriate. Define technical requirements with non-technical colleagues in the Data … person. Essential Skills Practical experience with AI coding assistants and strong prompting skills, supported by examples. Strong SQL Server T-SQL development and performance tuning, including experience supporting SQL Server in a large-scale environment. Experience with Git and version control. Excellent teamwork, communication and documentation skills. Desirable ...

PostgreSQL DBA - AWS, Aurora, RDS - REMOTE

Hiring Organisation
Henderson Scott
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£500 - £525 per day
high-profile public sector project. This role is fully remote and falls inside IR35 . The Role: You will be responsible for managing, tuning, and scaling mission-critical database infrastructure hosted in secure cloud environments. Working closely with engineering and DevOps teams, you will ensure optimal performance, high … availability, and strict adherence to government security standards. Core Responsibilities: Design, configure, and manage PostgreSQL, Amazon Aurora, and Amazon RDS instances. Drive database performance tuning, slow query troubleshooting, and proactive monitoring. Execute schema updates, migrations, and engine upgrades safely within cloud ecosystems. Support disaster recovery, backup protocols ...

Principal Database Administrator Fully Remote

Hiring Organisation
Interact Consulting Limited
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
market-leading SaaS platform 24x7. This is a true player-coach role: you'll set the long-term database strategy and standards, improve reliability, performance, and security across the estate, and line-manage and develop our existing DBA team. You'll be the senior technical authority for database architecture … strategy, standards, and roadmap for the database function across SQL Server, Azure SQL, and Cosmos DB. Get hands-on with a live production estate: performance tuning, configuration, backups, restores, disaster recovery, incident response, and release support. Right-size and optimise Azure SQL deployments across General Purpose, Business Critical ...

Database Administrator

Location
City Of London, England, United Kingdom
changing and dynamic software world, Synergy Solutions International is now growing their team. Database Administrator Job Summary The successful candidate will be responsible for performance tuning of database systems, developing processes for optimizing database security, diagnosing and troubleshooting database errors, and recommending emerging database technologies. Performance tuning … Detailed understanding of Oracle Database operational running and replication Strong command of SQL and SQL toolsets Knowledge of database security, backup and recovery, and performance monitoring standards Unix Shell scripting Understanding of relational data modelling Strong mathematical and statistical knowledge Good written and verbal communications Experience with Unix environments ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
comfortable working on the entire stack even when that means learning new things. You'll own problems end to end - from kernel-level performance tuning to the web dashboard a client uses, to the operator interface of our industrial units. Priorities change, deadlines are often tight … capture. Cloud infrastructure on Azure - VMs, container apps, deployment, networking, storage, monitoring. Linux sysops - provisioning and maintaining edge Linux machines: networking, systemd, containers, performance tuning, remote access and recovery. We use Ansible, Tailscale Python - internal tools, operator interfaces, APIs and data pipelines. Hands-on work - occasional hands ...

DevOps Developer

Location
City Of London, England, United Kingdom
LAMP based systems . This is a fantastic opportunity for an experienced DevOPS to join our expanding team, managing our servers. You must have performance tuning experience with Linux (preferably Centos 6.X), Apache 2.X, MySQL 5.X and PHP 5.X. Overview We currently develop and host a bespoke high … performance e-commerce platform on behalf of our established clients. Server setups vary from single dedicated servers to a load-balanced web nodes with database active-passive cluster. The infrastructure is managed hosting with 2 providers and over 30 servers. What You Will Be Doing The successful candidate will ...