4 of 4 Contract Performance Engineering Jobs in London

Java Developer

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
lifecycle (encryption, secrets management, logging). Collaborate with product, QA, SRE, and architecture teams to deliver high-quality features in iterative releases. Contribute to performance tuning, resilience testing, and SLAs/SLOs for real-time processing. Write clean, testable code with unit, integration, and contract tests; participate in code … Experience with Hazelcast, Kafka Connect, Schema Registry, or Confluent Platform. Knowledge of security in payments: OAuth2/OpenID Connect, mTLS, HSMs, tokenisation. Background in performance engineering (JMH, Gatling, k6) and chaos/resilience testing. Cloud experience (AWS/GCP/Azure) and infrastructure-as-code (Terraform/Ansible ...

Hybrid Cloud & Network Security Architect

Hiring Organisation
Vanquish Technologies Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £700 per day
Core Networking Enterprise LAN/WAN/SD-WAN architecture and design. Routing & switching (L2/L3), Wi-Fi controllers/enterprise deployments. Network performance engineering (capacity planning, QoS, traffic engineering). Security Expertise Firewalls, VPNs, IDS/IPS, secure segmentation, Zero Trust architecture. Threat detection/ ...

Spotfire Consultant

Hiring Organisation
Staffworx Limited
Location
London, United Kingdom
Employment Type
Contract
deep technical expertise in Spotfire s visual and scripting frameworks, alongside the ability to reverse-engineer, redesign and optimize data models for scalable, high-performance reporting in Power BI. This role is critical to navigating functional parity, data transformation and performance alignment between platforms, working closely with business … align source data, dataflows and model transformations. Work with business stakeholders to define functional parity, consolidate multiple versions and recommend optimisations. Provide guidance on performance engineering approaches in Power BI, including model size reduction, incremental refresh, composite models, DirectQuery/Import trade-offs. Support UAT by validating that ...

Principal FPGA Design Engineer

Hiring Organisation
Expert Employment
Location
Enfield, Enfield Town, Greater London, United Kingdom
Employment Type
Contract
Contract Rate
£60.00 - £80.00/hour Full package
lead complex FPGA developments from system requirements through to fully verified hardware. This is a senior, hands-on technical leadership role within a high-performance engineering team. Key Responsibilities Lead FPGA architecture and end-to-end VHDL design Define system-level requirements and implement robust solutions Develop test ...