21 of 21 Contract Performance Tuning Jobs in London

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 ...

Java Low Latency Engineer

Hiring Organisation
DCV Technologies
Location
London, United Kingdom
Employment Type
Contract
days from office) Long term contract position Role Overview We are looking for an experienced Java Low Latency Engineer with strong expertise in Java performance optimization, JVM tuning, and high-performance system development. The ideal candidate will have experience building event-driven, concurrent systems designed … latency and high-frequency environments Required Skills & Experience Strong Core Java and JVM performance tuning expertise. Excellent knowledge of Data Structures and Algorithms. Experience with concurrency, multithreading, and low-latency system design. Knowledge of GC, JNI, Java Unsafe, and JNR-FFI. Strong understanding of CPU architecture, shared memory ...

Lead Oracle Data Engineer

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
secure and complex environment. The successful candidate will be responsible for designing, building, optimising and maintaining scalable data solutions, ensuring the availability, integrity and performance of enterprise data platforms. Key Responsibilities Design, develop and maintain Oracle-based data solutions and data pipelines. Build and optimise ETL/ELT processes … requirements. Develop and maintain Oracle databases, schemes, stored procedures, functions and packages. Ensure data quality, governance, security and compliance across all data assets. Troubleshoot performance issues and implement database tuning and optimisation strategies. Collaborate with architects, developers and business stakeholders to deliver data-driven solutions. Support cloud ...

SQL Server Architect

Hiring Organisation
Sanderson Government and Defence
Location
City of London, London, United Kingdom
Employment Type
Contract
Evaluate AWS-native services and recommend the most effective resilience and recovery solutions. Define and test recovery objectives, failover procedures, and operational readiness. Assess performance, scalability, availability, maintainability, and operational complexity of different SQL Server deployment patterns. Produce architectural designs, technical documentation, implementation plans, and operational runbooks. Collaborate closely …/DR solutions. Extensive experience with: Always On Availability Groups Failover Cluster Instances (FCI) Log Shipping Replication Technologies Deep understanding of SQL Server performance tuning and optimisation, including: Indexing strategies Storage optimisation I/O performance Concurrency management Wait statistics analysis Strong knowledge of networking principles supporting ...

Bi Developer - Oracle Analytics

Hiring Organisation
Randstad Digital
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £505 per day
data reconciliation, establish rollback plans, and deliver production runbooks and team support handovers. Required Experience & Skills 8+ years of Oracle DB development and SQL performance tuning. 5+ years in OAS/OBIEE and BI Publisher development. 5+ years in Python development for data extraction, transformation, and reporting automation. 3+ ...

BI Architect - Oracle Analytics & Access

Hiring Organisation
Randstad Digital
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £505 per day
data reconciliation, establish rollback plans, and deliver production runbooks and team support handovers. Required Experience & Skills 8+ years of Oracle DB development and SQL performance tuning. 5+ years in OAS/OBIEE and BI Publisher development. 5+ years in Python development for data extraction, transformation, and reporting automation. 3+ ...

SQL Server Architect

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £620/day
testing and validating SQL Server high availability (HA) and disaster recovery (DR) solutions within AWS. This will include assessing different resilience patterns, failover capabilities, performance and cloud-native services. Following a successful PoV, the programme is expected to progress into a detailed architecture and design phase. Key Responsibilities: Design … Evaluate AWS services including EC2, EBS, FSx, Route 53, CloudWatch and AWS Backup. Assess disaster recovery strategies, failover mechanisms and performance. Optimise SQL Server performance, storage and database configurations. Ensure compatibility with large-scale SharePoint environments. Work alongside Infrastructure Architects and AWS specialists to assess and recommend suitable technical ...

SQL Server Architect - SC Cleared

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£590 - £630/day
SharePoint platform from on-premises infrastructure to AWS. The initial eight-week Proof of Value will assess SQL Server high availability, disaster recovery and performance options, with the potential to progress into a detailed architecture and design phase through to the end of 2026. You will work closely with … Availability Groups, Failover Cluster Instances (FCI) and HA/DR solutions. Experience supporting large-scale SharePoint farms and SQL Server databases. Strong SQL Server performance tuning, storage optimisation and troubleshooting skills. Knowledge of clustering, networking, DNS failover and disaster recovery design. Desirable Skills AWS experience with ...

Java Modernization Technical Architect - SC Clearance

Hiring Organisation
Randstad Technologies Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500/day Inside IR35 via Umbrella
Actions. Landing Zone & Cloud Integration: Architect integrations with Azure Landing Zones, Azure Storage, Azure SQL, and Azure Key Vault while ensuring strict security hardening, performance optimization, and observability. Governance & Leadership: Provide architectural oversight, conduct design reviews, establish migration best practices, and collaborate closely with client stakeholders, engineering leads … Azure Storage, Azure SQL, and Azure Key Vault. Modernization & Security: Track record in legacy-to-cloud application migration, OAuth2, JWT, REST API architecture, performance tuning, and security hardening. Containerization: Hands-on experience with Docker and Kubernetes for container orchestration. Front-End Fundamentals: Exposure to client-side technologies such ...

SQL Server Architect - DV Cleared

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£590 - £610/day
SharePoint platform from on-premises infrastructure to AWS. The initial eight-week Proof of Value will assess SQL Server high availability, disaster recovery and performance options, with the potential to progress into a detailed architecture and design phase through to the end of 2026. You will work closely with … Availability Groups, Failover Cluster Instances (FCI) and HA/DR solutions. Experience supporting large-scale SharePoint farms and SQL Server databases. Strong SQL Server performance tuning, storage optimisation and troubleshooting skills. Knowledge of clustering, networking, DNS failover and disaster recovery design. Desirable Skills AWS experience with ...

Oracle Data Engineer (SC Cleared)

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£560 - £570 per day
data-focused role Expertise in Oracle Database technologies, including PL/SQL Experience designing and developing ETL/ELT processes Strong SQL development and performance tuning skills Experience working with large-scale and complex data environments Ability to work effectively with technical and business stakeholders Desirable Experience: Government … optimise ETL/ELT pipelines and integration processes Support data migration, transformation and validation activities Ensure high levels of data quality, integrity and performance Collaborate with architects, analysts and delivery teams to implement data requirements Troubleshoot and resolve complex data and database issues Contribute to best practices, standards ...

Oracle DBA

Hiring Organisation
ARM
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£40 - £45/hour
seeking an experienced Oracle Database Administrator to support and maintain enterprise database environments. You'll be responsible for database installation, performance tuning, security, backup and recovery, while ensuring the availability, integrity, and performance of critical systems. Key Responsibilities Install, configure, and maintain Oracle databases. Manage backup, recovery … disaster recovery solutions. Monitor and optimise database performance and availability. Troubleshoot and resolve database-related issues. Implement and maintain database security policies and procedures. Support and deploy new database technologies and enhancements. Design, build, and integrate complex database solutions. Develop reports, dashboards, and database monitoring tools. Collaborate with internal ...

C# Developer

Hiring Organisation
Access Computer Consulting
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £425/day
skills, investigate complex data issues and independently identify and implement technical solutions. You will be working on regulatory reporting projects where data accuracy, system performance and delivery against demanding deadlines are essential. Key Skills & Experience Strong commercial C# development experience. Advanced SQL skills, including complex queries, performance tuning and query optimisation. Proven experience investigating and resolving data-related issues, including data discrepancies and performance problems. Strong analytical and troubleshooting skills, with the ability to identify root causes and implement effective solutions. Experience working with complex, data-intensive applications and systems. Ability to understand business processes, analyse ...

Senior DevOps / Automation Engineer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £570/day
detection and remediation automation. Required Technical Skills: Core: Strong Python development (production quality code, modular design, error handling, logging, testing). PostgreSQL (schema design, performance tuning, operational usage). YAML (clean, structured automation definitions). Git and Git based CI/CD practices. Jenkins pipeline development (Groovy). ...

Senior DevOps/Automation Engineer - Ansible

Hiring Organisation
ARM
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £480/day
audit and regulatory stakeholders. Required Technical Skills Core Strong Python development (production quality code, modular design, error handling, logging, testing). PostgreSQL (schema design, performance tuning, operational usage). YAML (clean, structured automation definitions). Git and Git based CI/CD practices. Jenkins pipeline development (Groovy). ...

KDB+ Developer

Hiring Organisation
DCV Technologies
Location
London, United Kingdom
Employment Type
Contract
Responsibilities: Develop and optimise KDB+/q queries and applications. Work with real-time and historical market data. Perform data modelling, query optimisation, and performance tuning. Troubleshoot production issues and support applications. Collaborate with traders, quants, and business teams. Required Skills: Strong KDB+ and q programming. Knowledge of time ...

Oracle Analytics and Reporting Architect

Hiring Organisation
Sanderson Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £700 per day
/SQL experience. OAS (Oracle Analytics Server) and BI Publisher expertise. Python automation and reporting development. Experience migrating Microsoft Access and VBA applications. Reporting, performance tuning and enterprise data architecture experience. Financial services background preferred. Key Responsibilities Assess and document existing Access reporting solutions. Design and deliver target ...

Senior SIEM Engineer

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
monitoring platform. Responsibilities: Develop and optimise SIEM solutions Build and manage log ingestion pipelines Enhance threat detection, alerts and dashboards Support platform automation and performance tuning Work closely with Security Operations teams Key Skills: SIEM Engineering/Security Monitoring Elasticsearch, Logstash, Kibana (ELK) Kafka Kubernetes Scripting & Automation Ansible ...

Oracle EBS EXA DBA

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450 per day + Inside IR35 via Umbrella
Configure, maintain, and tune high-availability Oracle Databases supporting EBS (including Oracle RAC). Execute database cloning, upgrades, patching, and cross-platform migrations. Conduct performance diagnostics and tuning using AWR, ASH, execution plans, and trace files to resolve locks, resource contention, and wait events. Implement disaster recovery … from on-premises infrastructure to OCI or Azure. Ensure secure connectivity, proper network setup (DNS, TCP/IP, firewalls, load balancers), and post-migration performance stabilization. 4. Support, Operations & Compliance Provide tier-3 production support and participate in major incident response and root cause analysis (RCA). Execute operational ...

Blue Yonder (BY) WMS Lead Consultant

Hiring Organisation
DCV Technologies Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£565 per day
automation and operational support. Analyse and troubleshoot interfaces with ERP, transportation, automation and other third-party systems. Support batch jobs, monitoring, issue resolution and performance tuning. Contribute to upgrades, patches and continuous improvement. Essential Candidate Profile Demonstrable hands-on Blue Yonder WMS experience. This is mandatory, not simply generic … picking, packing, shipping and cycle counting. Strong SQL and PL/SQL development expertise. Unix/Linux and shell scripting knowledge. Database concepts and performance optimisation. Integration technologies, APIs and interface troubleshooting. Data warehousing and ETL concepts. Experience of Git and Agile delivery practices. Strong analytical/problem-solving ...

Data Architect

Hiring Organisation
SoCode Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £900/day
discrepancies, duplicates, missing data and inconsistent identifiers. Establish data quality checks, lineage and monitoring to improve transparency and confidence in financial data. Optimise Snowflake performance, including query efficiency and parallel versus sequential processing. Work with APIs and external data sources to ensure reliable data ingestion and transformation. Apply Medallion … Strong hands-on experience with SQL and Python. Practical experience building data pipelines, transformations and integrations. Experience with Snowflake, including query optimisation and performance tuning. PostgreSQL or other relational database experience is also relevant. A solid understanding of data modelling, normalisation and data architecture principles. Experience implementing data validation ...