1 to 25 of 29 Remote Performance Tuning Jobs in London

MS Dynamics Developer (Power Automate / Dynamics 365 F&O) - SC Cleared

Hiring Organisation
MLC Partners
Location
London, South East, England, United Kingdom
Employment Type
Temporary
Salary
£425 - £500 per day
Power Apps (low-code) and incorporate AI features where appropriate to enhance F&O processes; evaluate new platform capabilities. Provide 3rd-line support , performance tuning, and bug fixes; support user training and produce support documentation. Consult with stakeholders on technical/functional design; explain complex topics clearly … extension models , upgrade strategies, coding standards, and maintainability best practices. Experience with unit testing , code reviews , technical documentation , and UAT . Proven maintenance & performance tuning for Dynamics 365 applications. Excellent communication skills; able to translate complex technical concepts for non-technical stakeholders. Experience working in Agile/Scrum ...

Oracle DBA

Hiring Organisation
Pontoon
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £600/day
role in supporting our extensive portfolio of over 800 Oracle databases, primarily focusing on Oracle 19c. You will be responsible for ensuring the reliability, performance, and security of our database environments, which include complex configurations such as RAC/ASM, Exadata, Dataguard, and RMAN. Key Responsibilities: Support and maintain … Clusters and associated application tools. Create, modify, and patch various database products as needed. Execute Oracle RMAN backup and recovery procedures effectively. Optimize database performance through tuning and monitoring. Configure and operate Oracle GoldenGate microservices. Provide support for Oracle Exadata and Oracle DataGuard environments. Utilize OEM 13c, Oracle ...

Senior Specialist Engineer (SRE)

Hiring Organisation
UK Health Security Agency
Location
Birmingham, Leeds, Liverpool, London (Canary Wharf), United Kingdom
Employment Type
Permanent
Salary
£41983.00 - £52113.00 a year
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 … High Performance Computing, Site Reliability Engineering , Artificial intelligence (HPC/SRE/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 ...

Java Developer

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
lifecycle (encryption, secrets management, logging). Collaborate with product, QA, SRE, and architecture teams to deliver high-quality features in iterative releases. Contribute to performance tuning, resilience testing, and SLAs/SLOs for real-time processing. Write clean, testable code with unit, integration, and contract tests; participate … Experience with Hazelcast, Kafka Connect, Schema Registry, or Confluent Platform. Knowledge of security in payments: OAuth2/OpenID Connect, mTLS, HSMs, tokenisation. Background in performance engineering (JMH, Gatling, k6) and chaos/resilience testing. Cloud experience (AWS/GCP/Azure) and infrastructure-as-code (Terraform/Ansible). ...

Senior Java Engineer Kubernetes, Kafka, Docker - Hybrid

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £750 per day
SpringBoot skills Experience of developing and deploying on Unix or Linux Hands-on experience of using the Kafka ecosystem Experience of profiling and performance tuning Experience of Behaviour-Driven and Test-Driven development principles and skills Experience of Public Cloud development Desirable Skills: Working in an Agile development ...

DevOps Engineer - Terraform

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
autoscaling and cost efficiency. Ensure robust AWS networking (VPC, Transit Gateway, PrivateLink, Route 53) and enforce security best practices. Drive incident response, monitoring, and performance tuning. Key Technologies: AWS (EKS, Fargate, EC2, S3) Terraform CloudFormation GitLab ArgoCD Docker Kubernetes Helm Cassandra OTel Grafana Splunk Karpenter Python Desirable: Experience with ...

Data Engineer - £350PD - Remote

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£300 - £350 per day
processing patterns (CDC, watermarking, upserts) AWS Data Services Amazon S3: data lake architectures, partitioning strategies, lifecycle policies DynamoDB: data modeling, secondary indexes, streams, and performance optimization Amazon Redshift: foundational querying, integrations, and performance considerations AWS Lambda for scalable data processing and orchestration Amazon EventBridge for event-driven … decoupled data pipelines Vector Databases & Embeddings Strong understanding of vector database concepts, indexing strategies, and performance trade-offs Design and implementation of embedding generation pipelines Optimization techniques for semantic search and retrieval accuracy Effective chunking strategies for document ingestion and processing Experience with CockroachDB deployment and management is beneficial ...

Data Engineer - £350PD - Remote

Hiring Organisation
Tenth Revolution Group
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£300 - £350/day
processing patterns (CDC, watermarking, upserts) AWS Data Services Amazon S3: data lake architectures, partitioning strategies, lifecycle policies DynamoDB: data modeling, secondary indexes, streams, and performance optimization Amazon Redshift: foundational querying, integrations, and performance considerations AWS Lambda for scalable data processing and orchestration Amazon EventBridge for event-driven … decoupled data pipelines Vector Databases & Embeddings Strong understanding of vector database concepts, indexing strategies, and performance trade-offs Design and implementation of embedding generation pipelines Optimization techniques for semantic search and retrieval accuracy Effective chunking strategies for document ingestion and processing Experience with CockroachDB deployment and management is beneficial ...

Senior SQL & SSIS Data Engineer (Data warehouse)

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
this hands-on, technical position, you will take ownership of a significant portfolio of around 90 SSIS batch jobs. You'll dive deep into performance analysis, tackle existing technical debt, and implement best practises that will elevate our data operations. Your expertise will be crucial as we gear … exciting data warehouse migration from New York to London in 2026! Key Responsibilities Analyse and optimise SSIS ETL pipelines and batch jobs. Improve SQL performance through effective indexing and execution plans. Identify and resolve locking and blocking issues to enhance efficiency. Apply best practises to boost overall warehouse performance. ...

Senior SQL & SSIS Data Engineer Data warehouse

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
this hands-on, technical position, you will take ownership of a significant portfolio of around 90 SSIS batch jobs. You'll dive deep into performance analysis, tackle existing technical debt, and implement best practises that will elevate our data operations. Your expertise will be crucial as we gear … exciting data warehouse migration from New York to London in 2026! Key Responsibilities Analyse and optimise SSIS ETL pipelines and batch jobs. Improve SQL performance through effective indexing and execution plans. Identify and resolve locking and blocking issues to enhance efficiency. Apply best practises to boost overall warehouse performance. ...

Linux / Oracle Systems Administrator

Hiring Organisation
Robert Half
Location
South East London, London, United Kingdom
Employment Type
Temporary, Work From Home
Month Fixed Term Contract for a Global Financial services Organisation. Responsibilities: Administer and optimise Oracle databases for core banking applications, ensuring high availability, performance, and security. Manage and maintain Linux and AIX servers hosting financial systems. Perform OS and database upgrades, patching, and performance tuning. Collaborate with senior … call support and incident response for production environments. Document procedures, configurations, and operational runbooks. Experience: 7+ years in Oracle DBA roles (including RAC, ASM, performance tuning) Strong command of SQL and Oracle PL/SQL. 5+ years with Linux (RHEL/Oracle Linux) and AIX. Experience with ...

Linux / Oracle Systems Administrator

Hiring Organisation
Robert Half
Location
London, South East, England, United Kingdom
Employment Type
Temporary
Salary
Competitive salary
Month Fixed Term Contract for a Global Financial services Organisation. Responsibilities: Administer and optimise Oracle databases for core banking applications, ensuring high availability, performance, and security. Manage and maintain Linux and AIX servers hosting financial systems. Perform OS and database upgrades, patching, and performance tuning. Collaborate with senior … call support and incident response for production environments. Document procedures, configurations, and operational runbooks. Experience: 7+ years in Oracle DBA roles (including RAC, ASM, performance tuning) Strong command of SQL and Oracle PL/SQL. 5+ years with Linux (RHEL/Oracle Linux) and AIX. Experience with ...

Cloud Platform Engineering Lead / DevOps Lead

Hiring Organisation
KBC Technologies UK LTD
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
Code and modern CI/CD . Embed secure-by-design principles from architecture to runtime. Define and manage SLOs/SLIs ; drive observability, performance tuning, and automation. Promote API-first delivery , creating reusable patterns and golden paths. Mentor engineers and actively contribute to communities of practice. Core ...

Staff Software Engineer - Mobile/Frontend - Consumer

Hiring Organisation
Kraken
Location
London, UK
others to execute with confidence. You’ll mentor through example and collaboration, raising the technical bar across teams and ensuring our systems scale with performance, reliability, and purpose. This role sits at the intersection of product, marketing, and infrastructure turning ideas into measurable results. You’ll lead with accountability … evolve the frontend architecture and standards for Earn across all platforms (web + mobile) Lead high-impact, cross-app initiatives: major refactors, performance & reliability improvements, shared UI/component libraries or SDKs, and codebase modernization Define and enforce frontend best practices, testing strategy, performance budgets, and accessibility standards ...

Senior Storage Engineer

Hiring Organisation
83zero Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550/day
Lead data migrations from Dell EMC VMAX and Commvault systems Deliver expert-level support and management across SAN and NAS platforms Oversee storage provisioning, performance tuning, and capacity planning Troubleshoot complex storage incidents in high-availability environments Support upgrades, lifecycle management, and transformation initiatives Collaborate with infrastructure, networking ...

C# Oracle PL/SQL Developer Role

Hiring Organisation
GCS
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £415/day Inside IR35
code logic and database interactions. Key Skills & Requirements: Strong proficiency in C#/.NET and Oracle PL/SQL, including complex query analysis and performance tuning. Solid understanding of application server and Oracle database structures. Python scripting skills for automation or data analysis (desirable). Familiarity with data lineage ...

Data Lineage Developer

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£415/day
code logic and database interactions. Key Skills & Requirements: Strong proficiency in C#/.NET and Oracle PL/SQL, including complex query analysis and performance tuning. Solid understanding of application server and Oracle database structures. Python scripting skills for automation or data analysis (desirable). Familiarity with data lineage ...

Senior Java Developer

Hiring Organisation
Oliver Bernard
Location
London Area, United Kingdom
Developer – Low-Latency | Multi-Threading | Core Java Holborn, London (3 days per week onsite) £120,000 + bonus + benefits Are you a high-performance Java engineer who thrives in low-latency, multi-threaded environments? Join a top-tier London team building cutting-edge systems with a focus … work on: Designing and building ultra-low-latency Java services Optimising multi-threaded, high-throughput systems Working with Core Java (Java 8+), performance tuning, GC optimisation Collaborating with senior engineers on architecture and best practices Delivering high-impact features in a fast-moving, product-driven environment What ...

IT Applications Analyst

Hiring Organisation
Larbey Evans
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 per annum
patching, and upgrades in coordination with change management procedures Manage user access controls, including provisioning, de-provisioning, and access reviews Monitor system health and performance; initiate health checks and proactively remediate issues Respond to and resolve incidents and service requests in line with SLAs Provide break/fix troubleshooting … tools Understanding of access management, patch management, and vulnerability remediation processes Familiarity with ITIL practices (Incident, Problem, Change, and Configuration Management) Exposure to application performance tuning, cloud platforms, or scripting (e.g., PowerShell, Python ...

Senior Network Security Engineer - WAF

Hiring Organisation
Revybe IT Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £500 per day
posture, drive improvements across our network security stack, and support key projects focused on cloud, firewall, and WAF optimisation. Key Responsibilities Lead the configuration, tuning, and optimisation of Barracuda WAF platforms Support and enhance Azure networking components including VNets, NSGs, firewalls, load balancers, and routing Work with next-generation … network security, traffic flows, segmentation, and application security Understanding of OWASP, threat mitigation, and secure configuration principles Experience in incident response, troubleshooting, and performance tuning Excellent communication and documentation skills Click apply to be considered. ...

Infrastructure & Application Engineer

Hiring Organisation
Nextech
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £60,000 per annum
moving change environments. What You'll Do Lead and support application migrations to modern platforms (cloud & on-prem) Own application lifecycle - deployment, configuration, upgrades & performance tuning Troubleshoot complex issues across servers, networks, databases & integrations Enhance monitoring, automation and resilience across core services Collaborate with vendors and internal teams ...

Cybersecurity & AI Workflow - Volunteer

Hiring Organisation
Qisetna
Location
London, UK
enabled systems. Networking & IT Infrastructure Manage and maintain networks, servers, user access, and connectivity across the organisation. Troubleshoot technical issues and proactively improve system performance and reliability. Support hybrid/remote work environments with secure cloud-based solutions. Website & CMS (WordPress) Administration Oversee website updates, security patches, plugin management … performance optimisation. Collaborate with communications staff to manage content, landing pages, and digital campaigns. Ensure accessibility and usability (ADA compliance, mobile optimisation). Search Engine Optimisation & Digital Growth Conduct keyword research, on-page optimisation, and analytics tracking. Improve external visibility for programs, initiatives, and fundraising efforts. Use SEO insights ...

Senior Software Engineer

Hiring Organisation
Oliver Bernard
Location
London Area, United Kingdom
doing: Designing and developing ultra-low-latency Java services Optimising multi-threaded, high-throughput systems Working with Core Java (Java 8+), performance tuning, and GC optimisation Collaborating with senior engineers on architecture and best-practice design Delivering high-impact features in a fast-paced, product-driven environment What … Java and strong knowledge of JVM internals Proven experience building low-latency or high-concurrency systems Experience in multi-threading, lock-free structures, and performance optimisation Ability to work in Holborn 3 days per week Why join us: £120k base salary Bonus + comprehensive benefits package Central London location ...

Technical Business Analyst

Hiring Organisation
Barclays
Location
london (dagenham), south east england, united kingdom
processes that will leverage the new system. System Deployment & Readiness: Ensure all non-functional requirements are met, working with Technology to coordinate system testing, performance tuning, and technical readiness for a large-scale deployment. Training & Adoption: Develop and oversee the delivery of training materials and sessions ...

Azure Data Engineer - £400PD - Remote

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£300 - £400 per day
Synapse, Databricks, and Microsoft Fabric. Build efficient ETL/ELT processes and data models to support analytics, reporting, and dashboards. Optimise existing pipelines for performance, reliability, and cost efficiency. Implement best practices for data quality, error handling, automation, and monitoring. Manage data security and governance, including Row-Level Security … PySpark, or T-SQL for transformations. Understanding of CI/CD and DevOps (Git, YAML pipelines). Strong grasp of data governance, security, and performance tuning. To apply for this role please submit your CV or contact Dillon Blackburn on or at . Tenth Revolution Group ...