26 to 50 of 225 Remote/Hybrid Performance Tuning Jobs

Site Reliability Engineer / Production

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
level all key system flows, the services, partners, and teams in play, and how to actively debug an incident. Lead reliability engineering: resilience patterns, performance tuning, capacity planning. Facilitate post-incident reviews and track actions to completion. Use AI tools for automated alert correlation, root cause analysis … observability tools, alerting, logging, and distributed systems debugging. Experience managing and working with offshore support teams. Hands-on experience with reliability engineering: resilience patterns, performance tuning, capacity planning. Active use of AI tools for incident triage, automation, and runbook generation. Ability to understand complex system flows across multiple ...

Java Engineer - Low Latency

Location
Greater London, England, United Kingdom
Description We’re looking for Java Developers with experience building low-latency systems to join us on a high-performance trading and real-time data project, for a major financial institution. You’ll work on mission-critical applications where performance, scalability, and reliability truly matter — the kind … opportunity to bring world-class engineering principles to projects at the very heart of modern finance. Your work will focus on writing and tuning high-performance Java frameworks, improving throughput and latency, and applying event-driven, microservice-based architectures. You’ll collaborate closely with other talented engineers, helping ...

Oracle OCI Multi Cloud Engineer

Location
Greater London, England, United Kingdom
proposals, architecture options papers, and business cases to senior stakeholders and governance boards Lead architecture assurance and design authority reviews, ensuring solutions meet security, performance, resilience, and compliance requirements Define solution patterns and reference architectures for Oracle cloud workloads that can be reused across programmes Manage technical risk throughout … above) on-premises and in cloud Manage Oracle Database Service deployments across OracleDB@Azure, OracleDB@AWS, and OracleDB@GCP Perform database performance tuning, patching, backup and recovery, and capacity planning Manage Oracle RAC, Data Guard, and ASM environments Support Oracle Advanced Security features including TDE, audit vault ...

FX Risk Lead Java Developer + AI (VP)

Location
Greater London, England, United Kingdom
platform, and your impact is felt across global markets. Role Overview/What will you do: Lead end‐to‐end delivery of complex, high‐performance Java applications supporting FX risk management across global markets Architect scalable, low‐latency solutions that process real‐time risk data at scale — designing … resilience, performance, and security from day one Drive technical direction and key decisions — from system design and architectural choices to setting engineering standards across the team Translate complex business requirements into robust, high‐quality code — working closely with quantitative analysts, traders, and business stakeholders Craft high‐quality, scalable software ...

Java Low Latency Engineer

Hiring Organisation
DCV Technologies
Location
London, United Kingdom
Employment Type
Contract
days from office) Long term contract position Role Overview We are looking for an experienced Java Low Latency Engineer with strong expertise in Java performance optimization, JVM tuning, and high-performance system development. The ideal candidate will have experience building event-driven, concurrent systems designed … latency and high-frequency environments Required Skills & Experience Strong Core Java and JVM performance tuning expertise. Excellent knowledge of Data Structures and Algorithms. Experience with concurrency, multithreading, and low-latency system design. Knowledge of GC, JNI, Java Unsafe, and JNR-FFI. Strong understanding of CPU architecture, shared memory ...

Senior Python Engineer (Hybrid in London)

Location
Greater London, England, United Kingdom
Linux environments and with Apache Kafka. Strong SQL skills are essential for this role , particularly the ability to write complex queries, optimise query performance, and work with large datasets. The successful candidate will collaborate with cross-functional teams to develop reliable, scalable, and high-performance solutions. Key Responsibilities … backend solutions using Python. Write, analyse, and optimise complex SQL queries involving multiple joins, subqueries, CTEs, window functions, and aggregations. Perform SQL query tuning and troubleshoot database performance issues. Work with relational databases to retrieve, transform, validate, and process large volumes of data. Develop and maintain scripts, automation ...

Senior Software Engineer, Reference Data Platform (Python/Oracle) - AVP

Location
Belfast City District, Northern Ireland, United Kingdom
Citi’s global business lines. As a Senior Programmer Analyst, you will leverage your expertise in Python and Oracle database technologies to build high-performance data processing pipelines, optimize complex database architectures and deliver resilient software solutions that support mission-critical enterprise operations. Key Responsibilities Application & Pipeline Development: Design … with business analysts, data stewards and upstream/downstream application teams to analyze reference data requirements and translate them into scalable technical implementations. System Performance & Scalability: Identify system bottlenecks, perform performance tuning across Python code and Oracle databases and implement partitioning, indexing and memory optimization strategies. Engineering ...

Akersystems Principal · Hybrid · Remote/Home Based 31 de out. Lead Data Engineer python terraform ansible aws lambda +11

Location
United Kingdom
professionals who recognised an opportunity to provide highly secure enterprise data platforms to large organisations. We build and operate ground-breaking, ultra-secure, high performance, cloud-based data infrastructure for the enterprise. Our proprietary technology solutions drive performance and reduce costs while helping our clients to improve … components. Design and implement batch and real‐time streaming solutions using modern event‐driven architectures. Own technical design decisions across projects, balancing scalability, security, performance and delivery requirements. Lead technical workshops, discovery sessions and architecture discussions with client stakeholders. Assess existing client data platforms and design practical approaches ...

Analytics Engineer

Location
Greater London, England, United Kingdom
remit Help us modernise: we’re actively evolving this stack and expect you to challenge and improve it, not just operate it Warehouse cost & performance Own the performance and cost profile of our Redshift warehouse — you should be able to read a query plan, choose sensible sort … from scratch Nice‐to‐haves Airflow or similar orchestration tools, and familiarity with data ingestion tools such as dlt or Airbyte Warehouse cost and performance tuning, particularly on Redshift Fintech, investment management, or another regulated industry Handling PII responsibly in an analytics environment — sanitised vs. restricted datasets, role ...

Sr. Snowflake Architect

Location
City of Edinburgh, Scotland, United Kingdom
Travel, and Fail-safe.Drive Snowflake cost optimization and FinOps practices virtual warehouse sizing and scaling policies, auto-suspend/resume, resource monitors, and query performance tuning (clustering keys, Search Optimization, materialized views, result caching, adaptive compute).Enable AI- and GenAI-ready architectures on Snowflake Cortex AI, agentic governance ...

KDB Application Technology Lead Analyst (VP)

Location
Belfast City District, Northern Ireland, United Kingdom
Applications Development Technology Lead Analyst (KDB Lead Developer) is a senior-level technical leadership role responsible for architecting, establishing, and implementing high-performance, low-latency tick and time-series data systems. This role leads the design, development, optimization, and support of real-time and historical KDB+/q architectures … throughput feedhandlers, APIs, and microservices interfacing KDB+ with upstream messaging fabrics (e.g., Kafka, Solace, LBM/29West, ZeroMQ) and downstream consumer platforms. Develop high-performance C/C++ or Python shared libraries (embedPy, PyQ, C API) for real-time analytics, machine learning integration, or proprietary calculation engines. Oversee ...

Principal Data Scientist - Optimisation Engineering

Location
Greater London, England, United Kingdom
ambiguous problem statements, and define measurable outcomes and acceptance criteria. Collaborate with OR/optimisation experts to integrate solvers (e.g., Gurobi) and ensure model performance, correctness, explainability, and maintainability. Establish strong engineering practices: code review, automated testing, CI/CD, release management, incident response, and post‐incident learning. Build … observability into optimisation services (KPIs, logs, traces) and manage performance tuning (latency, throughput, cost) across environments. Contribute hands‐on when needed (prototyping, critical‐path coding, reviews), while primarily enabling the team to deliver consistently. Required qualifications Proven experience leading a software engineering team delivering production‐grade systems (people ...

Senior Data Platform Engineer (Hybrid)

Location
Greater London, England, United Kingdom
using services such as Dataflow, Dataproc, Pub/Sub, and Cloud Composer. Architect data lake, data warehouse, and lakehouse solutions, including data modeling and performance tuning in BigQuery. Provision and manage data infrastructure using Terraform and CI/CD pipelines. Implement data governance, lineage, quality, and cataloging frameworks … client requirements. Apply security best practices across data environments, including IAM, encryption, KMS, data masking, and access controls. Monitor, troubleshoot, and resolve platform performance, reliability, and data quality issues. Collaborate with client teams, architects, and internal stakeholders to translate business needs into technical solutions. Mentor engineers, contribute to technical ...

Lead Software Developer

Hiring Organisation
scrumconnect ltd
Location
Swansea, West Glamorgan, United Kingdom
Employment Type
Permanent
Salary
GBP 65,000 Annual
Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical leadership role operating within structured and governed environments where security, performance, accessibility, reliability, and scalability are critical to service success. The role will support the development of a modern digital system that enables secure, reliable … build-vs-buy decisions in collaboration with the Technical Architect. Identify appropriate tooling, frameworks, and technical approaches across a wide range of systems. Lead performance optimisation activities, including database query tuning and optimisation of application-level caching using existing framework capabilities. Oversee the design, monitoring, and optimisation ...

Data Engineer

Location
United Kingdom
Infrastructure as Code principles. Apply data governance and security controls, including access permissions, data masking, pseudonymisation and data lineage. Monitor and optimise platform performance, resource usage and cloud infrastructure costs. Collaborate with Data Scientists to provide high-quality datasets for machine learning, NLP and predictive analytics. Support feature engineering … data team. You will ideally have: Proven experience working as a Data Engineer or in a similar data engineering role. Strong SQL skills, including performance tuning, CTEs, window functions and data modelling. Good Python programming skills, particularly PySpark, for data transformation, API integrations and automation. Hands-on experience ...

Senior Infrastructure Specialist – z Mainframe Db2 DBA

Location
City of Edinburgh, Scotland, United Kingdom
everyone. Including you!**What you’ll need*** Extensive in-depth expertise and knowledge of Db2 on z/OS.* Expert-level experience of performance monitoring and optimisation of Db2, including SQL tuning, buffer pool tuning, with the ability to make targeted recommendations to improve service stability … systems.* Proven experience of communicating and translating complex technical concepts for Senior Leadership.* Experience of supporting junior team members, providing coaching on Db2 fundamentals, performance tuning, utilities, and operational processes. **It would be great if you also had*** 10+ years of experience as a z/ ...

Software Engineer III

Hiring Organisation
Pearson
Location
London, England, United Kingdom
other systems. Implement data validation rules, reconciliation checks and exception handling so that data issues are caught early and resolved at source. Tune the performance of queries, pipelines and APEX pages, using execution plans, indexing and partitioning strategies. Contribute to code reviews, automated testing, CI/CD and technical … COLLECT/FORALL), dynamic SQL, collections and robust exception handling. Relational data modelling and normalisation, with an understanding of dimensional/data warehouse design. Performance tuning using execution plans, indexing, partitioning, and Oracle diagnostic tools. Oracle APEX Commercial experience designing, building and supporting Oracle APEX applications on recent ...

Software Engineer III

Location
Rotherham, England, United Kingdom
other systems. Implement data validation rules, reconciliation checks and exception handling so that data issues are caught early and resolved at source. Tune the performance of queries, pipelines and APEX pages, using execution plans, indexing and partitioning strategies. Contribute to code reviews, automated testing, CI/CD and technical … COLLECT/FORALL), dynamic SQL, collections and robust exception handling. Relational data modelling and normalisation, with an understanding of dimensional/data warehouse design. Performance tuning using execution plans, indexing, partitioning, and Oracle diagnostic tools. Oracle APEX Commercial experience designing, building and supporting Oracle APEX applications on recent ...

Associate Data Engineer

Hiring Organisation
NHS South Yorkshire Integrated Care Board
Location
Sheffield, S1 3FG, United Kingdom
Salary
£32073.00 to £39043.00
understood by all audiences. Experience of having discussions with stakeholders (internal and external) to clarify or define specifications. Experience of database configuration, performance tuning and administration. Desirable Experience in NHS information flows, hospital systems and applications. Significant experience of ETL and data warehouse schemas, and relational database systems. ...

Senior Database Developer

Location
Greater London, England, United Kingdom
growing financial technology business is looking for a Senior Database Developer to join its London technology team and take significant ownership of the design, performance and evolution of its core data platform. This is a hands‐on senior position for someone who has developed deep SQL Server expertise … enterprise‐scale SQL Server solutions Taking ownership of schema design, data modelling and data architecture Optimising complex queries, execution plans, indexes and overall database performance Diagnosing production database issues and conducting root‐cause analysis Developing and maintaining data pipelines using dbt Supporting existing SSIS/SSRS solutions Managing database ...

Developer

Location
Manchester, England, United Kingdom
optimise stored procedures, views, functions, and queries. Investigate and resolve SQL data-related issues. Support data migration and integration activities. Ensure data quality, performance, and security standards are maintained Reporting & Analytics Support operational reporting requirements and deliver SQL based solutions. Support in the development of Power BI reports where … Core/Blazor Visual Studio Database Development Microsoft SQL Server/T-SQL Stored Procedures/Functions/Views Views Query Optimisation and Performance Tuning Tools & Practices Git Source Control Azure DevOps or similar work management tools Soft Skills Strong analytical and problem-solving skills Ability to work ...

PostgreSQL DBA

Hiring Organisation
eTeam Workforce Limited
Location
Manchester, Lancashire, United Kingdom
Employment Type
Contract
Contract Rate
GBP 402 Daily
maintenance activities and optimize database resources to ensure stability and efficiency. Observability & Reporting: Monitor database health, availability, and capacity, and provide regular operational and performance reports. Disaster Recovery & High Availability: Manage and validate disaster recovery and high availability solutions to ensure business continuity. Backup & Restore: Configure, monitor, and periodically … test database backup and restore processes to ensure data recoverability and Application team requirement Performance Tuning: Analyze and tune database performance to improve query execution, resource utilization, and application responsiveness. Development & Incident Support: Provide database support for development activities and assist in troubleshooting and resolving production incidents. ...

Java Full Stack Developer

Hiring Organisation
Citigroup
Location
London, England, United Kingdom
Spring Boot.Strong foundation in RESTful API design, microservice architecture, and enterprise integration patterns.Deep expertise in relational databases (SQL), schema design, data indexing, transactions, and performance tuning (PostgreSQL, Oracle, or MySQL).Solid experience building data ingestion, transformation, or batch processing pipelines.Strong testing discipline: unit testing, integration testing, and mock … enjoy a whole host of additional benefits such as: Generous holiday allowance starting at 27 days plus bank holidays; increasing with tenureA discretional annual performance related bonus Private medical insurance packages to suit your personal circumstancesEmployee Assistance Program Pension Plan Paid Parental Leave Special discounts for employees, family ...

Principal Developer

Location
Liverpool, England, United Kingdom
high-throughput ingestion and processing pipelines for large volumes of streaming and batch telemetry data Design data models and storage strategies that balance cost, performance and query patterns across hot, warm and cold data Integrate data from multiple third‐party telematics providers, normalising disparate formats into a consistent, trusted … with a solid grasp of distributed systems and event‐driven architecture Deep knowledge of data engineering: ingestion, pipelines, data modelling, partitioning, storage formats and performance tuning at scale Experience working closely with data scientists, and an understanding of what it takes to get models and features into production ...

Data Engineer

Location
West of England, England, United Kingdom
Azure Databricks Azure Synapse Analytics Azure Data Lake Storage (ADLS) Azure SQL Database and SQL Server Microsoft Fabric (preferred) Advanced SQL development and performance tuning skills Experience with Python, PySpark, or Scala for data processing Knowledge of data warehousing concepts and dimensional modelling Experience with CI/ ...