1 to 25 of 42 Performance Tuning Jobs in Central London

data-driven workflows is advantageous Key Responsibilities Design, develop, and maintain full stack applications using React JS , C#.NET Core , and supporting technologies. Build high-performance backend services, RESTful APIs, and microservices with focus on scalability, maintainability, and resilience. Develop responsive, modular, and accessible UI components using React … driven and distributed system designs using technologies such as Kafka, Event Hub, or similar. Drive engineering best practices: code reviews, unit/integration testing, performance tuning, documentation, security scanning Contribute to cloud migration and modernization initiatives, especially in Azure or AWS environments. Mentor junior developers and collaborate within ...

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 … 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 ...

business needs. * Support the migration of associated Windows Server estates * Ensure secure, stable and compliant transitions aligned with end of life timelines. * Conduct troubleshooting, performance tuning, and post migration validation work. * Produce clear migration documentation, runbooks, and operational handover materials. * Collaborate with technical leads, infrastructure teams, and wider … later versions (SQL 2022; SQL 2025). * Strong understanding of SQL Server architecture, clustering, HA/DR, AlwaysOn, performance tuning, and security. * Demonstrated ability to analyse large, complex estates and identify hidden/unknown instances. * Experience migrating associated Windows Server platforms (2016/2019). * Ability to work ...

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 … 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 ...

Python, Bash and/or Ansible to automate routine maintenance tasks, deployments and monitoring services. Technical Requirements & Experience Essential - Expert-level knowledge of **PostgreSQL** (Performance tuning, vacuuming, indexing). - Hands-on experience with **ClickHouse** (managing clusters, MergeTree engines, and tuning for high-concurrency). - Proficiency in **Snowflake ...

Power BI to augment client decision-making and operational outcomes. Architecture, Governance & Standards Translate business requirements into end-to-end data architecture, balancing performance, cost, security, and maintainability. Apply and advise on security patterns and contribute to governance-by-design. Enforce technical documentation standards, architectural artefacts, and implementation patterns … audiences. Strong relationship-building and stakeholder management in complex client environments. Code Management CI/CD for Fabric items. Git-based workflow. Testing frameworks. Performance tuning patterns. Cost/capacity optimisation. Desirable Skills & Experience Experience across adjacent Microsoft services often paired with Fabric (e.g., Azure Synapse Analytics, Azure ...

trusted backend partner for Product and Platform teams. Within 12 months, you will: Confidently own and evolve multiple backend systems. Improve database performance and background job efficiency. Reduce operational risk across TOC integrations. Strengthen CI/CD reliability and deployment confidence. Contribute to longer-term backend architecture improvements … party integrations, ensuring reliable and secure data exchange. Infrastructure Collaboration: Work with the Platform team on AWS-based deployments and CI/CD processes. Performance & Reliability: Optimise background processing and database performance to maintain system stability. Incident Response: Support investigation and resolution of production issues. Cross-Functional Collaboration ...

fixed income, derivatives, FX, or commodities) • Familiarity with trade lifecycle, market data, pricing, and risk management Technical Skills • Proficiency in SQL (complex queries, joins, performance tuning) • Experience with MongoDB (document data modeling, querying, aggregation pipelines) • Understanding of data structures, ETL processes, and system integrations • Exposure to APIs, microservices ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

SLOs (e.g. rollout success rate, environment health, tool latency, queue time) Create debugging playbooks for common failure modes such as OOMs, memory leaks, performance regressions, and network or storage issues Reliability engineering Design retry and backoff strategies for long-running agent sessions that may fail mid-execution Implement session … experience Deep, hands-on production experience operating Kubernetes, including: Resource requests and limits, affinity/taints, priorities, autoscaling, and preemption Debugging networking, DNS, storage performance, and node health issues Strong distributed-systems fundamentals: idempotency, retries, failure domains, and incident response Practical observability experience with metrics, structured logging, and tracing ...

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 ...

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 ...

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 ...

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 ...

with minimal help/guidance Good Understanding of Airflow,Data Fusion and Data Flow Strong Background and experience in Data Ingestions,Transformation,Modeling and Performance tuning. One migration Experience from Cornerstone to GCP will be added advantage Suppport the design and development of BigData echosystem Experience in building complex ...

deployment processes to ensure high quality and repeatable releases. Provide operational support and incremental enhancements for a 24/7 production environment, contributing to performance tuning and incident response as needed. What we’re looking for Strong software engineering experience writing clean, efficient and well-tested code … with containerisation and orchestration technologies (Docker, Kubernetes) and cloud-aligned engineering patterns. A proactive mindset with a passion for simplifying complex systems, optimising runtime performance and enhancing developer/operational workflows. Nice to have Experience with connectivity protocols like FIX or other financial messaging standards. Prior work on large ...

development, enhancement, and support of critical banking applications on the IBM i platform. This role requires strong technical expertise, particularly in system security, performance, and resilient application design. About the Role As an Leading RPG Developer, you will work closely with business and technical stakeholders to deliver robust, secure …/400) operating system RPG (fixed and free format), CL, and embedded SQL IBM Rational Developer for i (RDi) DB2 for i and SQL performance tools (including Visual Explain) IBM i Security features (user profiles, authorization lists, object-level security) System APIs and SQL Services for system management Journaling ...

their field. You’ll work at the intersection of on-device machine learning, SDK development, and real-world product deployment , delivering reliable, high-performance mobile experiences used in production environments. Location: London - Hybrid Responsibilities: SDK integrations & partner support Lead integrations with partners and clients, ensuring seamless interoperability Collaborate with … developer support iOS camera SDK ownership Maintain and extend a camera SDK with real-time image quality checks (e.g. blur, lighting, framing) Ensure stability, performance, and ease of integration Manage SDK distribution and packaging On-device ML deployment Deploy and optimise machine learning models for mobile (e.g. conversion, quantisation ...