226 to 250 of 337 Performance Tuning Jobs in London

technology operates at serious scale, with response times in the 10-100 microsecond range. We're looking for experience in: Modern Java and JVM performance optimisation Low-latency algorithmic trading systems Market data and back-testing/simulation tools Linux internals, system calls and kernel tuning TCP/… kernel-bypass technologies Event-driven or event-sourcing microservices Performance analysis and targeted optimisation Experience with KDB, Rust or C++ would be highly advantageous. London - hybrid working, with up to two days from home £Excellent basic plus strong bonus potential This is an excellent opportunity for someone who remains ...

code, and improving services built on microservices, Kafka/event-driven patterns, and CI/CD pipelines. You will troubleshoot complex production issues, drive performance and resiliency improvements, and automate recurring problems to strengthen operational stability. This role offers the opportunity to grow your technical influence, explore … scalable software that addresses ambiguous, multi-dimensional problemsOwn end-to-end engineering outcomes across design, build, test, release, and operate phases — ensuring security, resiliency, performance, and maintainability in productionSet a high bar for code quality by authoring secure production code, leading code reviews, and debugging complex cross-service issues ...

with product, marketing, and partners to translate requirements into well-designed technical solutionsImprove engineering excellence through code reviews, test automation, CI/CD, observability, performance tuning, and operational best practicesEnsure solutions meet security, privacy, and compliance expectations including consent management, data minimization, and access controlsRequired Qualifications, Capabilities … work environment (e.g., for coding, test creation, troubleshooting, or documentation) with demonstrated ability to critically evaluate, validate, and refine AI-generated outputs for correctness, performance, and security. Understanding of responsible AI use in engineering workflows, including data sensitivity considerations, secure handling of inputs/outputs, and adherence to resiliency ...

Team. In this role, you will be responsible for maintaining, configuring, optimising, and developing the Trust's database infrastructure. You will ensure the availability, performance, integrity, and security of all databases across the organisation. The ideal candidate will have strong experience in SQL Server database administration , including performance tuning, troubleshooting, maintenance, and database design. Experience with virtualisation technologies and their configuration is also essential. Proposed interview date 10/07/2026 Main duties of the job Review, develop, and promote efficiency and stability across the Relational Database Management (RDBMS) environment , ensuring databases are secure ...

product, marketing, and partners to translate requirements into well-designed technical solutions Improve engineering excellence through code reviews, test automation, CI/CD, observability, performance tuning, and operational best practices Ensure solutions meet security, privacy, and compliance expectations including consent management, data minimization, and access controls Required Qualifications … work environment (e.g., for coding, test creation, troubleshooting, or documentation) with demonstrated ability to critically evaluate, validate, and refine AI-generated outputs for correctness, performance, and security. Understanding of responsible AI use in engineering workflows, including data sensitivity considerations, secure handling of inputs/outputs, and adherence to resiliency ...

improvements to monitoring, logging, and observability platforms. Driving automation and infrastructure-as-code best practices. Supporting and enhancing Kubernetes and GitOps deployments. Troubleshooting complex performance and reliability issues. Collaborating with technical teams to improve platform scalability, resilience, and security. Promoting DevOps best practices across engineering teams. Requirements: Strong experience … essential Experience with Ansible Knowledge of Kafka Strong Kubernetes experience Experience with ArgoCD Advanced scripting and automation skills Experience with GitLab Strong troubleshooting and performance tuning experience Infrequent travel to London ECS Recruitment Group Ltd is acting as an Employment Business in relation to this vacancy. ...

engines (e.g., Starburst or similar) Own API contracts with living documentation in CI/CD Build production-grade, testable pipelines Drive observability, reliability, and performance Contribute to architecture decisions (modularity, DI, extensibility) What You Bring (Must-Have) Strong hands-on experience in Java (17/21) + Spring Deep … parsing/validation, query planning/optimization Experience with SQL planners or query transformation layers Strong grounding in data structures, algorithms, and backend performance Production-grade testing using JUnit 5, Mockito Experience with clean architecture, DI, modular design Comfortable owning CI/CD, code quality, observability Familiarity with Docker ...

technology upgrades and ensure architectural stability across the platform.Diagnose and fix bugs in a timely manner based on priority, using log-based troubleshooting and performance analysis.Work with editorial stakeholders and, with guidance from the Multimedia Tech Product Manager, ensure systems continue to meet their needs and evolve the roadmap … e.g. Lambda, SQS, webhook-driven integrations) and an understanding of the failure modes of distributed processingConfident working in Linux environments: command line, systemd, networking, performance tuning and log-based troubleshootingFamiliarity with standard engineering workflow: Git, pull requests, code review and CI/CD pipelinesA practical security mindset around ...

experts ready to pick up Laravel and apply their skills to our ecosystem. Your main responsibilities will be to: Lead the design of high-performance distributed systems capable of handling global traffic Develop and refine services to improve scalability and efficiency Drive the transition toward a service-oriented architecture … value engineers who know how to prompt, validate, and iterate with AI to build better software faster. Knowledge of SQL and NoSQL including performance tuning and handling transactions at scale Experience architecting on AWS and managing containerized environments with Docker A champion of clean code, automated testing ...

efficient before they become a bottleneck Establish and enforce coding and agentic‐coding standards, systematic testing and documentation as CI‐enforced defaults Optimise warehouse performance and cost, finding and fixing the query patterns and materialisation choices driving unnecessary spend Deploy and supervise autonomous agents against our data stack … talk about what broke as readily as what worked. Strong SQL, Python and warehouse fundamentals , with Snowflake or Databricks experience including query performance tuning and cost optimisation. Track record of engineering standards in dbt — testing, CI/CD, documentation and PR review workflows that outlasted you. Comfortable owning ...

Senior Database Administrator to lead the management, optimisation and modernisation of the SQL Server estate. You will work with Azure data services, drive upgrades, performance tuning and security enhancements across the database portfolio. You will also champion automation, CI/CD, and IaC practices, supporting reporting via SSRS ...

optimization of critical AWS-based database platforms in a hybrid London setup. The role focuses on Aurora, RDS, and PostgreSQL with responsibility for DR, performance tuning and data integrity. You will drive architecture decisions, support governance, and collaborate with cloud teams to ensure robust, scalable database solutions ...

Administrator L1 on a contract basis to design, implement, and operate Sybase ASE and IQ databases across Linux/Unix systems. The role involves performance tuning, security management, backup/recovery, and high-availability configurations for large-scale environments. The candidate will collaborate with developers and infrastructure teams ...

Luxoft is seeking an experienced Senior KDB+ Developer to design, develop and optimize high performance data platforms built on kdb+. The ideal candidate will have deep expertise in kdb+ tick architecture, performance tuning at scale and close collaboration with business stakeholders – particularly within Risk functions – to deliver ...

pipelines from data-profiling to cleansing to standardization, conformance and publishing Advanced knowledge of SQL for profiling, joins/merges, deduplication, anomaly detection, and performance tuning Scripting knowledge in Python for automation, parsing, rules engines, and data quality checks, ability to write maintainable code. Experience using Python packages ...

Datasphere, SAC, and S/4HANA Cloud integrations. • Strong security fundamentals (OAuth2, SAML, JWT, SCIM) and compliance awareness. • Hands-on with observability (Cloud ALM), performance tuning, and reliability engineering. • Experience with agile delivery, CI/CD (Git-based pipelines), and test automation for integrations. • Preferred Qualifications ...

flows Drive efficiency through automation and AI‐supported data transformation, validation, and anomaly detection Manage and optimise Power BI environments, including datasets, refresh processes, performance tuning, and access control Provide ongoing reporting support, resolving data issues and collaborating with stakeholders to enhance datasets and reporting capabilities Qualifications ...

with high ownership Nice to haves Experience building or operating agent-based systems or autonomous workflows Familiarity with prompt engineering, evaluation frameworks, or model performance tuning Experience integrating with internal enterprise systems (CRM, support tools, analytics platforms, etc.) Background in building developer platforms or internal tooling Experience designing ...

domain registration. • System Scaling & Optimization: (Level: Practitioner): Design and implement scalable systems on AWS EC2 and S3, including load balancing, auto-scaling, and performance tuning. • Security & Compliance: (Level: Practitioner): Ensure all AWS deployments comply with industrystandard security protocols and company policies. Implement and manage security groups, IAM roles ...

Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing & Risk, working on our high-performance, high-frequency trading platform. This is a hands‐on role at the core of our market‐making technology stack, where nanoseconds matter and engineering excellence … critical. You’ll design and build ultra‐low latency pricing and risk systems that directly power our global trading operations. If you thrive in performance‐critical environments and want your work to have real market impact, we’d love to hear from you. Please note that this ...

report troubleshooting. Support and maintain data warehouse environments such as Azure Synapse Analytics, SQL Server/Azure SQL DB, Snowflake or BigQuery. Monitor ETL performance and investigate slow-running queries and data load failures. Issue Investigation & RCA Investigate job failures and performance issues across data pipelines, ML endpoints … Warehousing – SQL skills for debugging, data validation, and optimization; experience with Azure SQL DB or SQL Server; familiarity with data modeling concepts and warehouse performance tuning. Support & Incident Management – Strong troubleshooting and analytical skills for root cause analysis; exposure to ITSM tools such as ServiceNow and Jira. Preferred Qualifications ...

operational readiness.* Use infrastructure as code and configuration management tools such as Terraform, Chef, or Ansible to drive consistency and repeatability.* Troubleshoot complex deployment, performance, networking, and infrastructure issues, with an emphasis on preventing recurring manual fixes through automation.* Use AI-assisted engineering tools to accelerate development, automation, troubleshooting … ability to drive issues to resolution with technical and non-technical stakeholders.* **Systems & Automation** + Linux/Unix administration, operational support, troubleshooting, and performance tuning. + Scripting/programming in Python, Bash, or similar. + CI/CD pipeline experience with Jenkins, GitLab, or similar. + Containerization and artifact ...

Principal Virtualisation Engineer – Quant tradingLondon or New YorkTotal comp 300k+Quant Capital is partnering with a high-performance trading firm looking for a senior infrastructure engineer to take ownership of a core virtualisation and storage estate. This is a senior hands-on role for someone who can keep a live … change without disrupting critical systems. The role Take ownership of the firm's virtualisation and storage platforms in production Maintain high standards across uptime, performance, capacity and operational stability Assess new technologies and help shape long-term platform strategy Run technical evaluations and proof-of-concept work across infrastructure ...

balancing flexibility and simplicity in system/component designDemonstrate clean communication across technical and non-technical stakeholdersMake pragmatic decisions on when to optimize for performance vs. velocity based on business impactThrive in cross-functional environments spanning Product, Design, Compliance, and SalesDesign for scale, maintainability, and production excellencePreferred qualifications: Fintech … payments, or regulated industry experienceHigh-scale performance tuning (100k+ QPS, large user bases, strict latency SLAs)Multi-tenant SaaS or platform architecture backgroundProficiency with PostgreSQL, Redis, Kafka, or cloud platforms (AWS/GCP/Azure)Experience with OAuth2.0, API design, or developer documentationCross-region deployment or data residency ...

product, marketing, and partners to translate requirements into well-designed technical solutions Improve engineering excellence through code reviews, test automation, CI/CD, observability, performance tuning, and operational best practices Ensure solutions meet security, privacy, and compliance expectations including consent management, data minimization, and access controls Required Qualifications … work environment (e.g., for coding, test creation, troubleshooting, or documentation) with demonstrated ability to critically evaluate, validate, and refine AI-generated outputs for correctness, performance, and security. Understanding of responsible AI use in engineering workflows, including data sensitivity considerations, secure handling of inputs/outputs, and adherence to resiliency ...