26 to 50 of 89 Performance Tuning Jobs in London

Senior Linux/Oracle Database Administrator

Hiring Organisation
Morgan McKinley
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
experienced Senior Administrator specialising in Unix/Linux environments and Database management within the financial services sector. This role is critical to the stability, performance, and scalability of core banking and financial platforms. The ideal candidate will possess deep expertise in enterprise server hardware, multi-flavour Unix/Linux … hands-on experience supporting mission-critical financial applications. Main Responsibilities Database Management: Administer and optimise enterprise databases supporting core financial applications, ensuring high availability, performance, and security. Server Administration: Manage and maintain Linux and Unix-based servers hosting core banking and related financial systems. Maintenance: Perform system upgrades, patching ...

Alpha Data Services - Control Framework Business Analyst, Assistant Vice President

Hiring Organisation
State Street
Location
Greater London, United Kingdom
Employment Type
Full Time
part of a global, cross-divisional group supporting State Street Alpha. State Street Alpha redefines the common definition of 'alpha' to mean powering better performance and outcomes at every point on the investment life cycle. State Street Alpha is the market leading, first open platform from a single provider … dashboard offering. Skills & Attributes Analytical thinking with strong problem‐solving abilities. Proficiency in SQL with 5+ years of hands‐on experience (complex queries, performance tuning, data modelling). Working knowledge of ETL processes and data flows, including validation, transformation, and loading. High proficiency in Excel for data analysis ...

OutSystems Developer (LowCode Orchestration)

Hiring Organisation
Infoplus Technologies UK Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £400 to £450 per day
integrations (REST, SOAP, OAuth, SQL, message queues). Basic understanding of CSS, JavaScript, and relational databases (SQL Server, Oracle). Knowledge of application security, performance tuning, and scalable app design. Job Description: Mandatory Skills: OutSystems OutSystems Developer (Low-Code Orchestration) Role Overview The OutSystems Developer focuses on building … Design workflow orchestrations, process automation, and data models. Develop logic, integrations, and reusable UI patterns and modules. Implement role-based access, security configurations, and performance optimisations. 2. Integration & API Management Integrate with backend systems (REST/SOAP APIs, databases, SAP, CRM). Build and maintain integrations ensuring reliability ...

ML Engineer

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500/day Negotiable
Docker, Kubernetes, and CI/CD . Responsible AI: Ensure our systems are trustworthy by implementing quantifiable metrics for bias detection, explainability, and privacy. Performance Tuning: Optimize data workflows for maximum scalability and cost-efficiency. Insurance Domain experience is added advantage. Your Technical Toolkit AI/ML: Expert ...

ML Engineer

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £500 per day
Docker, Kubernetes, and CI/CD . Responsible AI: Ensure our systems are trustworthy by implementing quantifiable metrics for bias detection, explainability, and privacy. Performance Tuning: Optimize data workflows for maximum scalability and cost-efficiency. Insurance Domain experience is added advantage. Your Technical Toolkit AI/ML: Expert ...

Software Engineer - Data Platform for Trading

Hiring Organisation
Harrington Starr
Location
London Area, United Kingdom
Server queries, stored procedures, and data processing logic Design and build backend services in Python or C# Modernise legacy platforms and improve system performance Build and maintain AWS-hosted services and APIs Collaborate with distributed engineering and product teams Top Skills Required Advanced SQL Server expertise (performance tuning ...

Data Platform Engineer

Hiring Organisation
Harrington Starr
Location
London Area, United Kingdom
built on large SQL Server data estates, making strong SQL expertise non-negotiable. You will play a key role in modernising core systems, improving performance and reliability, and delivering scalable services for the next generation of our platform. This role is ideal for engineers who can work confidently across … implement backend services using modern programming languages (Python or C#) Support and enhance existing legacy platforms, identifying opportunities for iterative modernisation Improve query performance through indexing strategies, query optimisation, and data processing efficiency Enhance platform reliability through automation, monitoring, and operational improvements Build and maintain services deployed within ...

Outsystems Developer

Hiring Organisation
Coltech
Location
City of London, London, United Kingdom
using REST/SOAP APIs and external services Develop reusable components, UI patterns, and application logic Support testing, deployment, and environment promotion activities Troubleshoot performance issues and support optimisation across applications Collaborate with cross-functional teams on delivery, releases, and hypercare Contribute to documentation, governance, and best practice standards … APIs, OAuth, SQL) Good understanding of relational databases (SQL Server or Oracle) Knowledge of JavaScript and CSS for UI customisation Understanding of application security, performance tuning, and scalable design principles Desirable Experience OutSystems certifications (Associate, Professional, Tech Lead) Exposure to CI/CD pipelines and DevOps practices Experience ...

C++ HFT Developer

Hiring Organisation
Harrington Starr
Location
City of London, London, United Kingdom
core engineering team building the systems that power live trading across global electronic markets. This is a strong opportunity for an engineer who enjoys performance-critical systems, close collaboration with highly quantitative teams and solving complex technical problems where speed, reliability and precision matter. The business operates across multiple … live execution. The role suits someone with strong systems-level engineering capability who wants to work on real-time platforms where code quality and performance have direct commercial impact. You’ll partner closely with researchers and trading teams, contributing to architecture decisions, performance tuning and continuous platform ...

Backend Software Engineer

Hiring Organisation
STS Digital Group
Location
City of London, London, United Kingdom
market data, and downstream systems. Investigate and resolve production issues promptly, ensuring minimal impact on trading operations. Participate in code reviews, regression testing, and performance tuning of trading workflows. Contribute to continuous integration and delivery pipelines using GitHub and Helm. Support infrastructure deployment and troubleshooting within AWS. More … seeking a proactive engineer who takes ownership of deliverables, works collaboratively across teams, and thrives in solving complex technical challenges that directly impact trading performance and client experience. Expected Qualifications 5+ years’ experience in software engineering, ideally with C#, Go, Rust or Java. Solid understanding of trading technology ...

Senior SharePoint Developer and Administrator

Hiring Organisation
Ryder Reid Legal Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
Microsoft Graph. SharePoint Administration & Operations Administer both SharePoint SE (on-prem) and SharePoint Online environments. Manage updates, cumulative patches and platform maintenance. Monitor performance, availability, capacity and reliability. Oversee site collections, permissions, authentication, service applications and governance. Support backup, restore and disaster recovery processes. Troubleshoot complex cloud … React, HTML5, CSS3. Strong REST API and Microsoft Graph integration experience. Solid C#/.NET framework experience. Deep knowledge of SharePoint on-prem administration, performance tuning, patching and troubleshooting. Experience with BCS and creating External Content Types. Strong SQL Server skills. Understanding of authentication, permissions, governance and security ...

Junior Software Engineer

Hiring Organisation
Insight Global
Location
City of London, London, United Kingdom
related field) Full stack in Microsoft technologies (below): Microsoft stack: Visual Studio, .NET/C#, ASP.NET, Entity Framework. SQL Server: good T-SQL, performance tuning, and SSDT database projects APIs: designing, building and consuming REST services. SDLC/DevOps: Agile delivery, Azure DevOps, CI/CD automation ...

Senior Web Application Developer (Full Stack)

Hiring Organisation
CPS Group (UK) Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £525/day
frameworks * Experienced with CI/CD and DevOps pipelines (GitLab, Azure DevOps, TeamCity) * Proven experience working in Agile environments7 * Understanding of application and database performance tuning, troubleshooting, and optimization techniques. * Familiarity with enterprise CMS platforms (e.g., SDL Tridion) For more information or immediate consideration for this opportunity, please ...

Head of Development, EMEA IT, IT

Hiring Organisation
CLSA Global Markets Pte Ltd
Location
London, UK
Core Java and REST APIs.* Practical knowledge of multi-threading, event-driven programming, and memory optimization.* Strong problem-solving and analytical abilities.* Knowledge of performance tuning techniques.* Familiarity with enterprise SDLC tools like JIRA and Confluence.* Experience with CI/CD tools such as Git, Maven/Gradle ...

Senior Software Engineer

Hiring Organisation
Harrington Starr
Location
London Area, United Kingdom
modern systems, high standards, and sustainable delivery. The role This is a senior engineering opportunity within a specialist Site Reliability Engineering team focused on performance, uptime, and operational excellence across a business-critical trading platform. The role combines software engineering with reliability engineering. You’ll be involved in designing … What you will do Build tools, automation, and internal services that improve platform reliability Implement monitoring, telemetry, and observability standards across distributed systems Analyse performance across application, OS, and network layers to identify bottlenecks Help define and improve SLOs/SLAs for critical services Support engineering teams with architecture ...

Database Data Engineer

Hiring Organisation
Peaple Talent
Location
City of London, London, United Kingdom
scalable database solutions (SQL Server, PostgreSQL, DynamoDB) Lead migrations of MS SQL Server on EC2 to AWS RDS Build and manage data pipelines Drive performance tuning, query optimisation, and indexing strategies Collaborate across engineering teams to embed robust database architecture ✅ What We’re Looking For 5+ years ...

Staff Backend Engineer (AI Lab | £170,000)

Hiring Organisation
Paradigm Talent
Location
London, UK
science. You should have Deep experience building and scaling backend systems and distributed applications . Strong coding skills in Python , with an understanding of performance tuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . Proficiency with databases — schema design, performance optimization … engineering mindset — you think about reliability, maintainability, and long-term scalability. Nice-to-haves Experience with MLOps and model-serving infrastructure. Background in high-performance computing or large-scale scientific workloads. Expertise in data pipeline architecture and real-time streaming systems. Knowledge of scientific or biological computing environments . ...

Java Fullstack Developer, Assistant Vice President

Hiring Organisation
State Street
Location
Greater London, United Kingdom
Employment Type
Full Time
/API tests) and uphold strong quality gates through code reviews and CI/CD discipline. Contribute to operational readiness: logging/monitoring, performance tuning, production support, and reliability improvements for client- and operations-facing digital asset services. Work with security and platform stakeholders to ensure solutions meet … platform backends. About State Street Across the globe, institutional investors rely on us to help them manage risk, respond to challenges, and drive performance and profitability. We keep our clients at the heart of everything we do, and smart, engaged employees are essential to our continued success. ...

Java Fullstack Developer, Assistant Vice President

Hiring Organisation
State Street
Location
london (city of london), south east england, united kingdom
/API tests) and uphold strong quality gates through code reviews and CI/CD discipline. Contribute to operational readiness: logging/monitoring, performance tuning, production support, and reliability improvements for client- and operations-facing digital asset services. Work with security and platform stakeholders to ensure solutions meet … platform backends. About State Street Across the globe, institutional investors rely on us to help them manage risk, respond to challenges, and drive performance and profitability. We keep our clients at the heart of everything we do, and smart, engaged employees are essential to our continued success. ...

Primary System Analyst, Charles River Development, Assistnat Vice President

Hiring Organisation
State Street
Location
Greater London, United Kingdom
Employment Type
Full Time
River IMS solutions, including: Client assistance in optimal use of the system User administration/privileges Parameter configuration changes System availability Application and database performance tuning Daily operational processing monitoring and support Charles River IMS and database software patches Charles River IMS version upgrades Assistance with problem support … StateStreet.com/careers About State Street Across the globe, institutional investors rely on us to help them manage risk, respond to challenges, and drive performance and profitability. We keep our clients at the heart of everything we do, and smart, engaged employees are essential to our continued success. ...

Developer/Application Support

Hiring Organisation
Ashdown Group
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
back end) version 11 onwards Understanding of data security and compliance, including ISO27001 or secure coding practices SQL Server development skills (stored procedures, triggers, performance tuning) Experience with SSRS reporting Exposure to IIS, HTML, CSS, or web-based systems ...

Developer/Application Support

Hiring Organisation
Ashdown Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £70,000 per annum
back end) version 11 onwards Understanding of data security and compliance, including ISO27001 or secure coding practices SQL Server development skills (stored procedures, triggers, performance tuning) Experience with SSRS reporting Exposure to IIS, HTML, CSS, or web-based systems ...

Application Support & Developer

Hiring Organisation
Ashdown Group
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
back end) version 11 onwards Understanding of data security and compliance, including ISO27001 or secure coding practices SQL Server development skills (stored procedures, triggers, performance tuning) Experience with SSRS reporting Exposure to IIS, HTML, CSS, or web-based systems ...

Software Developer

Hiring Organisation
Ashdown Group
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
back end) version 11 onwards Understanding of data security and compliance, including ISO27001 or secure coding practices SQL Server development skills (stored procedures, triggers, performance tuning) Experience with SSRS reporting Exposure to IIS, HTML, CSS, or web-based systems ...

Application Support & Developer

Hiring Organisation
Ashdown Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £70,000 per annum
back end) version 11 onwards Understanding of data security and compliance, including ISO27001 or secure coding practices SQL Server development skills (stored procedures, triggers, performance tuning) Experience with SSRS reporting Exposure to IIS, HTML, CSS, or web-based systems ...