12 of 12 Performance Tuning Jobs in Hertfordshire

Senior Power BI Architect

Hiring Organisation
Persistent Systems
Location
Watford, England, United Kingdom
lead the design, development, and optimization of enterprise-scale BI solutions. This role requires deep technical expertise in Power BI, data modeling, and performance tuning, especially for large and complex datasets. The ideal candidate will be proficient in tools like DAX Studio, Tabular Editor, and Azure-based data … + Amazon QuickSight). Design and optimize complex data models using Tabular Editor and DAX Studio.  Manage and optimize very large datasets (VLDB) for performance and scalability. Collaborate with business stakeholders to gather requirements and translate them into technical solutions. Lead performance tuning, including DAX optimization ...

Oracle Architect

Hiring Organisation
Purview Consultancy Services Ltd
Location
St. Albans, Hertfordshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
From £450 to £500 per day
migration and integration of databases across multi cloud database environments including Oracle Cloud AWS Azure and Google Cloud Ensure high availability scalability and performance of database systems Collaborate with cross functional teams to define and implement database solutions that meet business requirements. Requirements: Handson experience with migrating large database … with migrating database to ATPADW Design Database consolidation and reduce OPEX spending Provide technical leadership and mentorship to junior database architects and administrators Conduct performance tuning capacity planning and security assessments Stay updated with the latest advancements in database technologies and cloud offerings Implement and manage Exadata ...

Senior ABAP Developer

Hiring Organisation
Omega Resource Group
Location
St. Albans, Hertfordshire, South East, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£400 - 500 per day
Development Team. Job Role – Senior SAP ABAP Developer Reporting to the Development Operations Manager the Senior ABAP Developer shall design and develop robust, high-performance code that meets stringent quality standards, ensuring successful delivery of both projects and BAU solutions. Lead a team of ABAP developers with excellent communication … solving, and stakeholder management skills Duties – Senior SAP ABAP Developer • Design & Development: Produce high-quality OO ABAP solutions, including classes, interfaces, and frameworks, ensuring performance, maintainability, and adherence to coding standards. • Functional Translation: Collaborate with functional consultants to translate requirements into technical specifications and deliver developments across various functional ...

Data Engineer

Hiring Organisation
Akkodis
Location
Stevenage, England, United Kingdom
disruption. Collaborate with various teams to align migration processes with organisational goals and regulatory standards. Qualifications Expert-level SQL skills for complex query development, performance tuning, indexing strategies, and data transformation to enable accurate and efficient migration from on-premises databases (SQL Server, Oracle, MySQL, NoSQL ...

Oracle APEX Developer

Hiring Organisation
Frontier Resourcing
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
Agile delivery squads with APEX devs, data engineers, integration specialists and business SMEs. Essential Skills Strong Oracle APEX development capability (apps, forms, processes, security, performance tuning). Hands-on experience with Oracle Analytics Cloud (OAC dashboards, DV, RPD/semantic modelling). Experience with Autonomous Data Warehouse … Oracle Fusion data structures. Data modelling, ETL/ELT, SQL tuning and general analytics engineering skillset. Proven ability to collaborate with AI teams, data scientists or ML engineers in shared workloads. UK Citizen with SC (minimum). Desirable OCI and OIC experience. Exposure to ML/AI concepts ...

Principal Software Engineer (DevOps)

Hiring Organisation
Oracle
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
Join OCI's Edge Security team as a Principal Engineer to architect and deliver cloud-scale DDoS protection. You'll lead design for high-performance detection and mitigation systems, drive automation and operational excellence, and set the technical direction for customer-facing DDoS capabilities across OCI's global edge. …/Python/C Rust/Go (strong preference for Java for control-plane/services). Deep systems design expertise: concurrency, memory management, performance tuning, API design, consistency models, and distributed systems fundamentals. Proven DevOps leadership at scale: CI/CD, automated testing, canarying, rollout/rollback ...

Pyspark Engineer AWS Glue STEVENAGE / Hybrid £80k

Hiring Organisation
Akkodis
Location
Stevenage, Hertfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
processes and tools (Talend, Informatica, Matillion, Pentaho, MuleSoft, Boomi) or scripting using Python, PySpark, and SQL. Proficient-level SQL skills for complex query development, performance tuning, indexing, and data transformation across on-premise databases and AWS cloud environments. Solid understanding of data warehousing and modelling techniques (Star Schema ...

Data Engineer - SC Cleared. Stevenage/Hybrid £80k

Hiring Organisation
Akkodis
Location
Stevenage, Hertfordshire, United Kingdom
Employment Type
Permanent
Salary
£70000 - £80000/annum
wider engineering and architecture teams to ensure migrations align with organisational and regulatory standards. Relevant exposure; Expert-level SQL skills for complex query development, performance tuning, indexing, and data transformation across on-premise databases and AWS cloud environments. Strong hands-on experience with ETL processes and tools (Talend ...

Security Engineer - MOD DV - Inside IR35

Hiring Organisation
Sanderson Government and Defence
Location
Hemel Hempstead, Hertfordshire, South East, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £700 per day
servers. Elastic (Elastic Stack/Elastic Security): Hands-on with index lifecycle management (ILM), ingest pipelines, ECS mapping, transforms, and enrichment. Experience designing and tuning detection rules (KQL, EQL), response actions, case workflows, and Elastic Security posture features. Skilled in Fleet/Agent deployment, data stream design, and performance tuning at scale. Strong client management and relationship building experience SIEM experience with Splunk/Elastic Excellent analytical and problem-solving skills coupled with ability to assess complex situations, identify risks, and recommend effective solutions Proven hands-on experience operating Elastic Stack/Elastic Security and Splunk Enterprise ...

Data Engineer

Hiring Organisation
Searchability
Location
Watford, Hertfordshire, UK
Employment Type
Full-time
business operates in a highly data-driven environment, working closely with Product and Data Science teams to support an Educational AI pipeline. Data reliability, performance, and scalability are central to the platform, and this role plays a key part in maintaining and evolving the underlying data infrastructure. … intersection of database administration and software engineering. You'll be responsible for building and maintaining high-availability PostgreSQL environments, ensuring performance, security, backups, replication, and recovery are robust and reliable. Alongside this, you'll write production-quality Python to automate database operations, build bespoke tooling, and support the evolution ...

Senior .Net Developer

Hiring Organisation
Earnly
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
store, query, and aggregate user financial data. Develop data ingestion pipelines to process real-time and batch data from external services. Optimize backend performance and ensure application scalability and resilience. Build authentication and authorization flows, following best practices for fintech-grade security. Write unit and integration tests, participate … .Net, Core 8, Razor Pages and Bootstrap 5 for UI. Experience with databases such as MongoDB and SQL Server, including schema design, indexing, and performance tuning. Familiarity with cloud platforms like Azure (we use Azure). Experience with containerization tools (Docker, Docker Compose) and deployment pipelines. Strong understanding ...

SIEM Engineer

Hiring Organisation
Sopra Steria
Location
Hemel Hempstead, Hertfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £80,000 per annum
retire, with version control and rollback. Automate workflows and configurations using CI/CD, SOAR, scripting and IaC tools (Terraform, Ansible). Ensure platform performance, stability and reliability, including capacity planning, high availability, disaster recovery and proactive monitoring. What you will bring: Hands-on experience with Elastic Security … Splunk ES, including detection engineering, indexing, parsing and performance tuning. Strong expertise in data pipeline engineering, log enrichment, data quality and large-scale ingestion architectures (ECS/CIM). Proven ability to design, test and optimise detection content, including MITRE ATT&CK-aligned rules and risk-based alerting ...