14 of 14 Performance Optimisation Jobs in the City of London

Senior Full Stack Web Engineer

Hiring Organisation
Keyrock
Location
City Of London, England, United Kingdom
crypto or digital asset domain is highly valued. You will work across the entire technology stack - from data models and APIs to interactive, high-performance interfaces - building and refining products that deliver tangible business value. You are driven by a product mindset, validating ideas early and evolving them from … maintainability, reliability, and secure integrations across all layers. Champion good engineering practices, including code reviews, automated testing, documentation, and CI/CD workflows. Optimise performance across the stack through effective debugging, profiling, and system tuning. Collaborate with product, and engineering teams to translate complex business and user requirements into ...

Tech Lead

Hiring Organisation
MFA Talent Services
Location
City of London, London, United Kingdom
Employment Type
Permanent
microservices, event-driven architectures, APIs, serverless and containerised workloads. Drive high-quality engineering standards including automated testing, TDD/BDD, CI/CD, observability, performance optimisation and security. Support DevOps maturity by ensuring robust pipelines, IaC, automated deployments, and consistent cloud environments. Provide mentorship, coaching, and capability uplift ...

Cloud Engineering Team Lead

Hiring Organisation
Sky
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
experience in logging systems (e.g. ELK stack ) Proven experience in monitoring systems (e.g. Prometheus ) Proven experience in tracing systems (e.g. OpenTelemetry , Jaeger) Experience in performance optimization and resource management Relevant certifications (AWS, Google) Understanding of Agile methodologies Ability to diagnose and resolve service- affecting issues in a Broadcast/ ...

Principal Software Engineer

Hiring Organisation
SGI
Location
City Of London, England, United Kingdom
technical direction for the front-end, champion best practices, and still enjoy being hands-on. Someone who obsesses over clean design, performance and scalability, and is comfortable leading from the front. The Opportunity You’ll be the go-to technical leader for front-end engineering within a cross-functional … reviews – and your voice will carry weight in how the platform evolves. What You’ll Do Lead the design and development of complex, high-performance React applications using React, TypeScript and modern front-end libraries. Define and drive front-end architecture, standards and best practices , ensuring quality, consistency ...

Data Engineer (Databricks)

Hiring Organisation
Hays Technology
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £450/day 450
designing and optimising large-scale data engineering solutions within the Databricks Data Intelligence Platform. This role is ideal for someone passionate about building high-performance data pipelines and ensuring robust data governance across modern cloud environments. Key Responsibilities Design, build, and maintain scalable data pipelines using Databricks Notebooks, Jobs … Workflows for both batch and streaming data. Optimise Spark and Delta Lake performance through efficient cluster configuration, adaptive query execution, and caching strategies. Conduct performance testing and cluster tuning to ensure cost-efficient, high-performing workloads. Implement data quality, lineage tracking, and access control policies aligned with Databricks ...

Technology Product Owner, AI, Microsoft Stack, Data Bricks, Remote

Hiring Organisation
Carrington Recruitment Solutions Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Developer before moving into Product Ownership Technical proficiency:Familiarity with Azure services (e.g., Data Lake, Synapse, Fabric) and Databricks for data engineering, analytics, performance optimisation, and governance. Experience with implementing and optimising scalable cloud infrastructure is highly valued. Backlog management:Demonstrated expertise in maintaining and prioritizing product backlogs ...

Audit Technology Product Owner, Big 4, Accountancy, Remote with Travel

Hiring Organisation
Carrington Recruitment Solutions Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Read on for more details Experience required: Technical proficiency:Familiarity with Azure services (e.g., Data Lake, Synapse, Fabric) and Databricks for data engineering, analytics, performance optimisation, and governance. Experience with implementing and optimising scalable cloud infrastructure is highly valued. Backlog management:Demonstrated expertise in maintaining and prioritizing product ...

Senior ZK-Engineer

Hiring Organisation
Plexus Resource Solutions Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
trustless Bitcoin vaults and zk light-client operations. Lead the architecture and implementation of zkVM systems, including circuit design, data interfaces, proof pipelines, and performance optimization. Implement and enforce security best practices across zkVM programs. Requirements: Demonstrated expertise in Rust programming. Proven experience delivering zero-knowledge systems or infrastructure ...

Infrastructure Engineer, Blockchain Specialist

Hiring Organisation
Keyrock
Location
City Of London, England, United Kingdom
provisioning, configuration, and management of infrastructure for all blockchain-related services. Observability & Monitoring: Develop comprehensive monitoring and alerting solutions to ensure the health, performance, and uptime of all blockchain nodes. Experience with tools like Prometheus, Grafana, or the ELK stack is key. Performance Optimization: Troubleshoot issues, perform root … cause analysis, and implement fixes to optimize the performance and latency of node operations. Security & Compliance: Apply best practices for network and node security, including the management of RPC endpoints, validator keys, and public/private key pairs. CI/CD: Implement and manage CI/CD pipelines ...

Machine Learning Engineer (Reinforcement Learning)

Hiring Organisation
FBI &TMT
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
skills, with experience using reinforcement learning and ML frameworks (e.g. PyTorch, TensorFlow, Ray, Gym, RLLib, SB3, TRL) and MLOps tools. Solid understanding of hyperparameter optimisation techniques and strategies. Experience building machine learning platforms or tooling for industrial or enterprise environments. Proficiency in data management techniques, including the storage, retrieval … preprocessing of large-scale datasets. Familiarity with model deployment and management, including API development, deployment pipelines, and performance optimisation. Experience designing and developing cloud-based infrastructure for distributed computing and scalable data processing. Deep understanding of software engineering and machine learning principles and best practices. Strong problem-solving ...

C++ Software Developer

Hiring Organisation
Ncounter LTD
Location
City of London, London, United Kingdom
Employment Type
Permanent
C++ Software Developer, Risk Technology £160,000 to £170,000 Join a high-performance engineering group responsible for the systems that sit at the heart of a global trading operation. This team owns the core risk platform, handling everything from trade intake and real time position tracking … speed. You will work in an engineering culture that values clarity, simplicity and strong design. Expect to collaborate with colleagues across regions, refine performance at a system level and contribute to a platform that is constantly evolving as trading strategies and data volumes grow. What you bring Strong C++ ...

Director, S-REIT

Hiring Organisation
NTT Global Data Centers EMEA UK ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent
engagement activities, including roadshows and conferences. Oversee one or more stabilized assets, collaborating with FP\&A, Business Case, and cross-functional teams to establish performance baselines and challenge assumptions. Monitor monthly asset performance (rent roll, leasing strategy, P\&L, capex), lead execution of asset strategies, and track implementation … experience in investor relations or capital markets, ideally with exposure to REITs or listed entities. Multiple years of experience in asset management or financial performance optimization, preferably in real estate or infrastructure. Multiple years of experience in a leadership role managing regional teams or cross-functional stakeholders. Proven experience ...

Senior Backend Engineer

Hiring Organisation
Plexus Resource Solutions Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
there team intentionally small, bringing together only the most exceptional talent in crypto. They are looking for a backend engineer experienced in building high-performance, low-latency microservices in TypeScript. Responsibilities Backend Development: Build and maintain scalable TypeScript services for trading, analytics, and integrations. Cross-Team Collaboration: Work with … designers, product, and users to align backend solutions with platform needs. Performance Optimization: Deliver fast, reliable systems and efficient queries for high user loads. Code Quality: Write clean, well-structured, well-documented code. Problem Solving: Debug and resolve complex issues to keep the platform running smoothly. Requirements 5+ years ...

Data Engineer (SC Cleared)

Hiring Organisation
Syntax Consultancy Ltd
Location
SW1H 0BB, City of Westminster, Greater London, United Kingdom
Employment Type
Contract
Contract Rate
£500/day 500/day (Inside IR35)
Warehouse patterns, Gold Layer modelling, defining/implementing ingestion + transformation pipelines (Dataflows Gen2, Notebooks), establishing modelling standards for Gold Layer + semantic models, performance optimization, lineage/observability, governance, RBAC, security, data retention. Team Leading/Delivery: setting standards, directing/mentoring the team, reviewing designs, unblocking delivery. … orchestration, testing, test data preparation, reporting validation, release practices. Operational Readiness: ensuring documentation/run books + non-functional requirements are met (security, resilience, performance). Short-Term Objective: baseline Gold Layer model components to enable consistent semantic models and reporting. ...