Performance Tuning Jobs in Central London

1 to 25 of 76 Performance Tuning Jobs in Central London

SQL DBA

Kensington, London, England, United Kingdom
Nuvola Resourcing Ltd
What’s on offer High-impact environment: Manage databases that power thousands of daily customer transactions. Tech modernisation: Hands-on involvement in major upgrades Autonomy: Scope to shape how performance tuning, replication, and HA are managed. Lifestyle benefits: Free daily lunch, heavily discounted products, cycle-to-work and EV leasing schemes, staff events, and long-service awards. Job … Security: financially secure successful well established and highly ethical company Key Responsibilities Performance tuning of MySQL databases across a large on-premise estate. Managing replication and HA, ensuring fast recovery and minimal downtime. Proactive monitoring and optimisation. Maintaining reliable backup and recovery procedures. Collaborating with developers, analysts and the wider IT team on schema design and deployments. Supporting … infrastructure upgrades and patching programmes. Candidate Profile Strong DBA in MySQL or MS SQL administration experience (performance tuning, HA, replication). Confident with Linux/Unix (Red Hat preferred). Comfortable in a busy on-premise environment. Familiarity with monitoring and backup tools. Desirable: SQL Server administration and storage optimisation experience. Apply now for a confidential conversation. We More ❯
Employment Type: Full-Time
Salary: £65,000 - £75,000 per annum
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Senior Java Developer (Low-Latency Payments Systems)

City of London, London, United Kingdom
RE Partners
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 ❯
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Senior Java Developer (Low-Latency Payments Systems)

london (city of london), south east england, united kingdom
RE Partners
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 ❯
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Senior Software Engineer

City of London, London, United Kingdom
Online Filings
Design and build RESTful API endpoints using NodeJS and Express, including detailed API documentation. Database Management: Design, optimize, and maintain complex SQL data models, ensuring efficient data structures, query performance, and reliability. Full-Stack Development: Develop responsive and performant front-end applications using ReactJS, focusing on UX/UI best practices. Integration & Automation: Architect and maintain integrations with external … Proven track record of leading development teams and managing large-scale projects. Database Expertise: In-depth experience with PostgreSQL/SQL, including design of complex schemas, writing queries and performance optimisation. Security & Performance: Deep understanding of application security best practices, performance tuning, and scalable architecture. Problem-Solving: Ability to troubleshoot complex technical issues, with a proactive … well-being, and continuous growth, ensuring that you have the support and resources to excel both professionally and personally. Competitive Salary: £50,000 - £65,000 per year, with potential performance-based increases. Performance Bonus: Up to 10% annual bonus. Generous Holiday Allowance: 27 days holiday plus bank holidays. Health Insurance: Private health insurance including dental care, vision, and More ❯
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Senior Software Engineer

london (city of london), south east england, united kingdom
Online Filings
Design and build RESTful API endpoints using NodeJS and Express, including detailed API documentation. Database Management: Design, optimize, and maintain complex SQL data models, ensuring efficient data structures, query performance, and reliability. Full-Stack Development: Develop responsive and performant front-end applications using ReactJS, focusing on UX/UI best practices. Integration & Automation: Architect and maintain integrations with external … Proven track record of leading development teams and managing large-scale projects. Database Expertise: In-depth experience with PostgreSQL/SQL, including design of complex schemas, writing queries and performance optimisation. Security & Performance: Deep understanding of application security best practices, performance tuning, and scalable architecture. Problem-Solving: Ability to troubleshoot complex technical issues, with a proactive … well-being, and continuous growth, ensuring that you have the support and resources to excel both professionally and personally. Competitive Salary: £50,000 - £65,000 per year, with potential performance-based increases. Performance Bonus: Up to 10% annual bonus. Generous Holiday Allowance: 27 days holiday plus bank holidays. Health Insurance: Private health insurance including dental care, vision, and More ❯
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Qlik Sense BI Developer

City of London, London, United Kingdom
Asenium Consulting
and maintain data visualization solutions that transform raw data into actionable insights. Your work enables business stakeholders to make informed decisions through intuitive dashboards and reports that reflect key performance metrics. Key Responsibilities: Requirement Gathering: Collaborate with business and data teams to understand reporting needs and translate them into technical specifications. Data Integration & Modeling: Design efficient data models and … perform ETL from various sources to ensure data accuracy and performance. Dashboard Development: Build interactive, user-friendly dashboards and reports using Qlik Sense scripting and visualization tools. Performance Optimization: Enhance application performance through script optimization and efficient data modeling. Testing & QA: Conduct rigorous testing and support user acceptance to ensure data accuracy and functional alignment. Documentation & Training: Document … Qlik’s scripting language for custom data loading, transformation, and calculations. •Data Analysis and Visualization: Skills in visualizing data, selecting appropriate chart types, and creating user-friendly, interactive dashboards. •Performance Optimization: Understanding of Qlik performance tuning, data model optimization, and dashboard load balancing. •Problem-Solving and Critical Thinking: Ability to analyze and troubleshoot data issues, application errors More ❯
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Qlik Sense BI Developer

london (city of london), south east england, united kingdom
Asenium Consulting
and maintain data visualization solutions that transform raw data into actionable insights. Your work enables business stakeholders to make informed decisions through intuitive dashboards and reports that reflect key performance metrics. Key Responsibilities: Requirement Gathering: Collaborate with business and data teams to understand reporting needs and translate them into technical specifications. Data Integration & Modeling: Design efficient data models and … perform ETL from various sources to ensure data accuracy and performance. Dashboard Development: Build interactive, user-friendly dashboards and reports using Qlik Sense scripting and visualization tools. Performance Optimization: Enhance application performance through script optimization and efficient data modeling. Testing & QA: Conduct rigorous testing and support user acceptance to ensure data accuracy and functional alignment. Documentation & Training: Document … Qlik’s scripting language for custom data loading, transformation, and calculations. •Data Analysis and Visualization: Skills in visualizing data, selecting appropriate chart types, and creating user-friendly, interactive dashboards. •Performance Optimization: Understanding of Qlik performance tuning, data model optimization, and dashboard load balancing. •Problem-Solving and Critical Thinking: Ability to analyze and troubleshoot data issues, application errors More ❯
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Data Engineer - Snowflake ,DBT

City of London, London, United Kingdom
Capgemini
SQL code for complex data processing and transformation tasks. Collaborate with data analysts, data scientists, and business stakeholders to understand data requirements and deliver high-quality solutions. Optimize Snowflake performance through query tuning, clustering, and resource management. Ensure data quality, integrity, and governance through testing, documentation, and monitoring. Participate in code reviews, architecture discussions, and continuous improvement initiatives. … Qualifications: 5+ years of experience in data engineering or a related field. Strong hands-on experience with DBT (modular SQL development, testing, documentation). Proficiency in Snowflake (data warehousing, performance tuning, security). Advanced knowledge of PL/SQL and experience with stored procedures, functions, and packages. Solid understanding of data modeling concepts (star/snowflake schemas, normalization More ❯
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Data Engineer - Snowflake ,DBT

london (city of london), south east england, united kingdom
Capgemini
SQL code for complex data processing and transformation tasks. Collaborate with data analysts, data scientists, and business stakeholders to understand data requirements and deliver high-quality solutions. Optimize Snowflake performance through query tuning, clustering, and resource management. Ensure data quality, integrity, and governance through testing, documentation, and monitoring. Participate in code reviews, architecture discussions, and continuous improvement initiatives. … Qualifications: 5+ years of experience in data engineering or a related field. Strong hands-on experience with DBT (modular SQL development, testing, documentation). Proficiency in Snowflake (data warehousing, performance tuning, security). Advanced knowledge of PL/SQL and experience with stored procedures, functions, and packages. Solid understanding of data modeling concepts (star/snowflake schemas, normalization More ❯
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Reliability Engineer

City of London, London, United Kingdom
BGC Group
proactive Solace Messaging Administrator to join our Messaging team. You will be responsible for managing and supporting our enterprise messaging infrastructure built on Solace PubSub+, ensuring high availability, optimal performance, and reliability across production and non-production environments. This includes working on incident response, capacity planning, WAN optimization, and system observability using tools like Prometheus and Grafana . Key … maintain Solace PubSub+ appliances and software brokers across environments (on-prem and cloud). Provide production support for messaging-related incidents, including root cause analysis and resolution. Monitor system performance and health using Prometheus and Grafana ; proactively identify and address anomalies. Configure and optimize Solace across WAN environments , ensuring low-latency, secure, and reliable messaging. Collaborate with development and … application support teams to troubleshoot message flow issues and integration problems. Perform capacity planning , scaling, and tuning of Solace infrastructure to meet current and future demand. Automate routine maintenance tasks and support continuous improvement of operational processes. Implement and maintain monitoring alerts, dashboards, and metrics to ensure visibility into the messaging layer. Ensure compliance with security policies and participate More ❯
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Reliability Engineer

london (city of london), south east england, united kingdom
BGC Group
proactive Solace Messaging Administrator to join our Messaging team. You will be responsible for managing and supporting our enterprise messaging infrastructure built on Solace PubSub+, ensuring high availability, optimal performance, and reliability across production and non-production environments. This includes working on incident response, capacity planning, WAN optimization, and system observability using tools like Prometheus and Grafana . Key … maintain Solace PubSub+ appliances and software brokers across environments (on-prem and cloud). Provide production support for messaging-related incidents, including root cause analysis and resolution. Monitor system performance and health using Prometheus and Grafana ; proactively identify and address anomalies. Configure and optimize Solace across WAN environments , ensuring low-latency, secure, and reliable messaging. Collaborate with development and … application support teams to troubleshoot message flow issues and integration problems. Perform capacity planning , scaling, and tuning of Solace infrastructure to meet current and future demand. Automate routine maintenance tasks and support continuous improvement of operational processes. Implement and maintain monitoring alerts, dashboards, and metrics to ensure visibility into the messaging layer. Ensure compliance with security policies and participate More ❯
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Snowflake Engineer

City of London, London, United Kingdom
Kubrick Group
patterns, and contribution to Kubrick’s internal knowledge base Line-manage and mentor developers within the team, supporting their professional growth and certifications (including SnowPro) Troubleshoot and tune query performance, storage usage, and cost efficiency across Snowflake accounts Act as a subject matter expert during consulting engagements, providing advice on best practices for data sharing, and integration with other … engineering or analytics, including designing and delivering enterprise grade data solutions Strong hands-on experience with Snowflake (or comparable cloud data warehouses like BigQuery, RedShift, Synapse) including data modelling, performance tuning and cost management Familiarity with SQL best practices, ELT patterns, and modern data transformation frameworks such as dbt Competence in at least one programming language (Python preferred More ❯
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Snowflake Engineer

london (city of london), south east england, united kingdom
Kubrick Group
patterns, and contribution to Kubrick’s internal knowledge base Line-manage and mentor developers within the team, supporting their professional growth and certifications (including SnowPro) Troubleshoot and tune query performance, storage usage, and cost efficiency across Snowflake accounts Act as a subject matter expert during consulting engagements, providing advice on best practices for data sharing, and integration with other … engineering or analytics, including designing and delivering enterprise grade data solutions Strong hands-on experience with Snowflake (or comparable cloud data warehouses like BigQuery, RedShift, Synapse) including data modelling, performance tuning and cost management Familiarity with SQL best practices, ELT patterns, and modern data transformation frameworks such as dbt Competence in at least one programming language (Python preferred More ❯
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Power Platform Developer

City of London, London, United Kingdom
KDR Talent Solutions
ecosystem and the ability to translate business needs into smart, scalable solutions. • Proven experience with Microsoft 365 and Power Platform (PowerApps, PowerAutomate, Dataverse) • Strong SQL skills, including data modeling, performance tuning, and ETL processes • Hands-on experience with SharePoint, Teams, and Exchange integration • Experience with Azure DevOps, API integration, and application lifecycle management • Excellent communication skills with the More ❯
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Power Platform Developer

london (city of london), south east england, united kingdom
KDR Talent Solutions
ecosystem and the ability to translate business needs into smart, scalable solutions. • Proven experience with Microsoft 365 and Power Platform (PowerApps, PowerAutomate, Dataverse) • Strong SQL skills, including data modeling, performance tuning, and ETL processes • Hands-on experience with SharePoint, Teams, and Exchange integration • Experience with Azure DevOps, API integration, and application lifecycle management • Excellent communication skills with the More ❯
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Senior Data Engineer

City of London, London, United Kingdom
Adecco
at Working level: Advanced SQL proficiency : expertise in writing complex, highly-performant SQL queries, including common table expressions (CTEs), window functions, and complex joins. Experience with query optimization and performance tuning on relational databases like PostgreSQL, MySQL, or similar Cloud data ecosystem (AWS) : hands-on experience with core AWS data services. Key services include: S3 for data lake More ❯
Employment Type: Contract
Rate: £550 - £600/day
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Senior Data Developer – Leading Multi-Strat Hedge Fund– Discrete Search – Excellent Compensation + Benefits

City of London, London, United Kingdom
Mondrian Alpha
scalable reporting solutions. Support critical production processes, including daily T+1 and month-end P&L workflows. Stay ahead of database technologies and continuously evaluate new data ingestion methods and performance optimizations. Provide on-call coverage for critical services, particularly in Asian trading hours when required. Train & mentor other developers in data engineering best practices. Requirements Strong programming skills in … modeling, ETL pipelines, and large datasets. 5+ years of experience working with P&L reporting, financial analytics, or similar data-driven workflows in a financial institution. Experience with database performance tuning, query optimization, and data pipeline automation. A deep understanding of financial markets, trading workflows, and risk analytics is highly beneficial. Ability to work independently and within a … small, high-performance team in a fast-paced environment. Master’s in Computer Science, Engineering, or a related quantitative field. My client anticipates to pay a strong performer upwards of £350k year 1 total compensation package. As well as a market-leading compensation package, they offer exceptional benefits including a top-tier healthcare package, fully subsidised qualifications plus breakfast More ❯
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Senior Data Developer – Leading Multi-Strat Hedge Fund– Discrete Search – Excellent Compensation + Benefits

london (city of london), south east england, united kingdom
Mondrian Alpha
scalable reporting solutions. Support critical production processes, including daily T+1 and month-end P&L workflows. Stay ahead of database technologies and continuously evaluate new data ingestion methods and performance optimizations. Provide on-call coverage for critical services, particularly in Asian trading hours when required. Train & mentor other developers in data engineering best practices. Requirements Strong programming skills in … modeling, ETL pipelines, and large datasets. 5+ years of experience working with P&L reporting, financial analytics, or similar data-driven workflows in a financial institution. Experience with database performance tuning, query optimization, and data pipeline automation. A deep understanding of financial markets, trading workflows, and risk analytics is highly beneficial. Ability to work independently and within a … small, high-performance team in a fast-paced environment. Master’s in Computer Science, Engineering, or a related quantitative field. My client anticipates to pay a strong performer upwards of £350k year 1 total compensation package. As well as a market-leading compensation package, they offer exceptional benefits including a top-tier healthcare package, fully subsidised qualifications plus breakfast More ❯
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Senior Full Stack Developer (Ref: 192154)

City of London, London, United Kingdom
Hybrid / WFH Options
Forsyth Barnes
Tech Stack & Experience Essential Strong full-stack background: TypeScript with React (or similar), Python (FastAPI) or Node.js (NestJS). Data: PostgreSQL preferred; solid experience with schema design, migrations, and performance tuning. Cloud/DevOps: Azure or AWS, Docker, GitHub Actions, IaC tools (Terraform/Pulumi). Security-first mindset: OAuth/OIDC, token auth, logging, and secure architecture. Testing More ❯
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Senior Full Stack Developer (Ref: 192154)

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Forsyth Barnes
Tech Stack & Experience Essential Strong full-stack background: TypeScript with React (or similar), Python (FastAPI) or Node.js (NestJS). Data: PostgreSQL preferred; solid experience with schema design, migrations, and performance tuning. Cloud/DevOps: Azure or AWS, Docker, GitHub Actions, IaC tools (Terraform/Pulumi). Security-first mindset: OAuth/OIDC, token auth, logging, and secure architecture. Testing More ❯
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Senior Application Support Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
The Curve Group
ll be responsible for: Investigating and resolving technical incidents, ensuring minimal downtime and effective root cause analysis Proactively maintaining and optimising applications, performing upgrades and configuration changes Monitoring system performance, defining service-level objectives, and addressing bottlenecks before they impact users Collaborating closely with engineering and business teams to drive operational excellence Enhancing processes, documentation, and tooling to support … looking for: Proven experience in an application support or support engineering role, within financial services ideally, or another regulated environment Strong knowledge of SRE principles, incident management, monitoring, and performance tuning Hands-on technical skills across a broad range of technologies, including: Microsoft: C#, VB, .NET Core, Azure, SQL Server, IIS, Windows Server Web: React, RESTful APIs, Docker More ❯
Employment Type: Permanent, Work From Home
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Senior Application Support Engineer

City of London, London, England, United Kingdom
Hybrid / WFH Options
The Curve Group
ll be responsible for: Investigating and resolving technical incidents, ensuring minimal downtime and effective root cause analysis Proactively maintaining and optimising applications, performing upgrades and configuration changes Monitoring system performance, defining service-level objectives, and addressing bottlenecks before they impact users Collaborating closely with engineering and business teams to drive operational excellence Enhancing processes, documentation, and tooling to support … looking for: Proven experience in an application support or support engineering role, within financial services ideally, or another regulated environment Strong knowledge of SRE principles, incident management, monitoring, and performance tuning Hands-on technical skills across a broad range of technologies, including: Microsoft: C#, VB, .NET Core, Azure, SQL Server, IIS, Windows Server Web: React, RESTful APIs, Docker More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

SQL Developer

City of London, London, United Kingdom
CorpGlobal Consulting
database professionals We're looking for an expert SQL Server instructor to lead our 5-day advanced training program covering: ✅ Advanced T-SQL & query optimization ✅ Execution plan analysis & index tuning ✅ Security, encryption & compliance ✅ High availability & disaster recovery ✅ PowerShell automation & best practices What you'll do: Deliver engaging, hands-on training (instructor-led/virtual/on-demand) Guide students … through real-world labs & tuning challenges Share industry best practices from production environments Mentor DBAs, Data Engineers, BI Specialists & DevOps teams What we're looking for: 5+ years as a SQL Server DBA or Database Developer Deep expertise in performance tuning, HA/DR, and security Experience with SSMS, SQL Profiler, PowerShell Proven training/teaching ability More ❯
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DataPower Developer

City of London, London, United Kingdom
AVENSYS CONSULTING (UK) LTD
experienced DataPower Developer to join our team to support projects environment. The successful candidate will be responsible for diagnosing, troubleshooting, and resolving environment-related issues, ensuring high availability and performance of the project infrastructure (in datapower and AWS). This role requires a hands-on technical expert with a strong background in DataPower development, complemented by knowledge of AWS … cloud resources including CloudWatch for logging and alerting, DynamoDB for database management, and AWS Lambda for serverless compute tasks related to project workflows. - Implement best practices for environment stability, performance tuning, and security compliance. - Produce detailed technical documentation, status reports, and issue logs for ongoing support and knowledge sharing. - Communicate effectively with cross-functional teams including developers, infrastructure More ❯
Employment Type: Contract
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DataPower Developer

london (city of london), south east england, united kingdom
Avensys Consulting
DataPower Developer to join our team to support project’s environment. The successful candidate will be responsible for diagnosing, troubleshooting, and resolving environment-related issues, ensuring high availability and performance of the project infrastructure (in datapower and AWS). This role requires a hands-on technical expert with a strong background in DataPower development, complemented by knowledge of AWS … cloud resources including CloudWatch for logging and alerting, DynamoDB for database management, and AWS Lambda for serverless compute tasks related to project workflows. - Implement best practices for environment stability, performance tuning, and security compliance. - Produce detailed technical documentation, status reports, and issue logs for ongoing support and knowledge sharing. - Communicate effectively with cross-functional teams including developers, infrastructure More ❯
Posted:
Performance Tuning
Central London
25th Percentile
£82,500
Median
£87,500
75th Percentile
£98,750
90th Percentile
£140,000