slough, south east england, united kingdom Hybrid / WFH Options
Clarksons
and Power BI services—all managed using modern DevOps and Infrastructure as Code (IaC) practices with Terraform. You’ll act as a technical leader across key areas such as performancetuning, automation, monitoring, migrations, CI/CD, and Azure Landing Zone (ALZ) adoption. You’ll also collaborate closely with cross-functional teams to support ongoing cloud transformation while … observability tools such as Azure Monitor, Log Analytics, and custom dashboards. Write and optimise Kusto Query Language (KQL) queries for diagnostics and analytics. Support, Troubleshooting & Leadership Provide expert-level performancetuning, query optimisation, and incident troubleshooting. Lead SQL Server upgrades, migrations, and implementation of disaster recovery (DR) and high availability (HA) solutions. Conduct annual disaster recovery testing across More ❯
slough, south east england, united kingdom Hybrid / WFH Options
VirtueTech Recruitment Group
analytics, optimisation, and real-time data processing to support trading and risk decisions. This role will focus on designing, building, and optimising the new ClickHouse data architecture , ensuring scalability, performance, and integration with existing trading systems. You’ll play a key role in refactoring existing SQL pipelines, enhancing data models, and implementing best practices for high-volume, low-latency … are SingleStore, Rockset, TimescaleDB Key Responsibilities: Design and implement scalable data solutions within ClickHouse . Migrate existing SQL data models, ETL pipelines, and reporting layers to ClickHouse. Optimise query performance, data ingestion, and storage for high-frequency trading data. Collaborate with traders, quants, and data analysts to ensure alignment with business requirements. Integrate ClickHouse with surrounding systems, including trading … risk, and analytics platforms. Establish data quality controls, monitoring, and performancetuning best practices. Support the ongoing evolution of the data architecture and tooling ecosystem. Experience Required: 5+ years’ experience as a C# Engineer or ClickHouse Developer in trading or financial services. Expert-level SQL development and optimisation skills. Hands-on experience with ClickHouse (architecture, performancetuningMore ❯
slough, south east england, united kingdom Hybrid / WFH Options
Harrington Starr
Junior Software Engineer London, UK £85,000 basic plus bonus We’re looking for a Junior Software Engineer to join a team that specialise in optimising large-scale, high-performance systems used by demanding clients worldwide. You’ll work across the full delivery lifecycle, from profiling and tuning code, to rethinking architectures ensuring software runs with maximum speed … dive deep into complex systems, identify bottlenecks, and implement improvements that make a measurable difference for clients. What you’ll be doing Profiling and optimising existing code to boost performance and reduce memory footprint Designing and implementing performance enhancements for high-throughput, low-latency systems Working with Product, Engineering, and Clients to understand and meet performance targets … Creating and maintaining automated performance and load testing frameworks Mentoring engineers on writing efficient, scalable, and maintainable code Contributing to architectural decisions that directly impact performance and reliability What we’re looking for A few years commercial experience in software engineering with strong experience in Python, Java, or C# Proven track record of performancetuning in More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Hunter Bond
/Hybrid My client are seeking a talented Software Engineer who will play a critical role in developing and optimizing high-frequency trading systems, ensuring they operate at peak performance with minimal latency. This is an opportunity to work in a fast-paced, intellectually challenging environment where your contributions will have a direct impact on the firm's success. … class technical team that pride themselves on working with the most cutting edge technologies and you will work and learn from the best. Responsibilities: Design, develop, and maintain high-performance trading applications. Performancetuning of state of the art trading systems - optimise code for maximum speed and efficiency, minimising latency. Implement and enhance trading algorithms in collaboration More ❯
Reading, Berkshire, South East, United Kingdom Hybrid / WFH Options
Cegeka UK Limited
and optimise performance. Collaborate with senior engineers to implement new features and fix bugs. Participate in code reviews and contribute to improving coding standards. Assist in troubleshooting, debugging, and performancetuning of applications. Document technical designs, processes, and solutions. Stay up to date with emerging tools, technologies, and best practices. Requirements: Degree in Computer Science, Software Engineering, or More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Areti Group | B Corp™
/CD pipelines and Docker -based runtime on AWS ; Infrastructure-as-Code via CDK/Terraform (CDKTF) . Apply secure-by-design and TDD ; instrument apps for observability and performance . Collaborate with product, platform, and security teams to meet operational and compliance requirements. The toolkit you’ll use Frontend: TypeScript, React.js, Vite, Material-UI, HTML5, CSS Backend: Node.js … CI/CD . Building and consuming RESTful APIs ; JSON schemas; integration testing. Comfortable in AWS and modern Infrastructure-as-Code approaches. Strong engineering fundamentals: code reviews, testing, observability, performancetuning . Security Clearance: Active SC or DV (must be current). Nice-to-haves Military background (RAF/Army/Navy) or delivery in defence, aerospace, or More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Tenth Revolution Group
and machine learning use cases. Work closely with clients to understand data requirements and translate them into robust technical solutions. Implement best practices for data modelling, data quality, and performancetuning across cloud-based platforms. Collaborate with cross-functional teams including data scientists, analysts, and software engineers to deliver end-to-end data solutions. Ensure data security, compliance … standards are met across all projects. Required Skills Strong experience with Azure data services (Data Factory, Synapse, Blob Storage, etc.). Proficiency in SQL for data manipulation, transformation, and performance optimisation. Hands-on experience with Databricks (Spark, Delta Lake, notebooks). Solid understanding of data architecture principles and cloud-native design. Experience working in consultancy or client-facing roles More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Mondrian Alpha
ve transitioned from development into a hands-on support and automation role. The group oversees the market data systems that power real-time decision-making across asset classes — ensuring performance, stability, and reliability in one of the most demanding trading environments in the world. This is not a traditional support role. You’ll be deep in the code, scripting … developers to trace issues into the codebase and identify sustainable long-term solutions. Manage data flows, troubleshoot production pipelines, and maintain service availability across regions. Contribute to system enhancements, performancetuning, and process optimization for a wide range of asset classes. Ideal Profile Hands-on experience in market data production support (L1–L3) within a trading or financial More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Mondrian Alpha
proficiency in SQL and Python for data processing and modelling. Deep understanding of Tableau (or similar tools) and visualisation best practices. Solid grasp of data architecture, schema design, and performance tuning. Excellent communication skills — able to translate complex technical detail into clear business insight. Financial knowledge is a plus, but not required. Experience with Microsoft SQL Server, PostgreSQL, or More ❯
Reading, Berkshire, England, United Kingdom Hybrid / WFH Options
Robert Walters
that makes it possible. As Data Solutions Architect you will: Define and deliver the UK data and analytics strategy in alignment with business goals. Design and implement scalable, high-performance data architectures using the Microsoft stack. Champion the use of self-service analytics and promote a data-driven culture across all business functions. Collaborate with stakeholders to translate business … improve business efficiency. Provide thought leadership on modern data tools and architectures, including Microsoft Fabric, Azure Data Services, and Copilot capabilities. Oversee solution quality, from testing and validation to performancetuning and governance. Mentor colleagues and guide partners to ensure consistent technical excellence and successful project delivery. Support incident and request management for analytics, data, and automation platforms. … Microsoft ecosystem - Power BI/Fabric, Azure, and Power Platform (Power Apps, Power Automate). Proficiency in SQL and data modelling, with a strong understanding of data governance and performance optimisation. Solid understanding of automation technologies and their application at scale. Experience in Agile delivery environments, balancing quality with pace. Strong appreciation for AI and its role in modern More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Caspian One
maintaining database solutions that support critical business operations within a global investment banking environment. Key Responsibilities Design, develop, and enhance stored procedures to implement complex business logic. Optimize query performance and troubleshoot database issues. Work with large datasets and ensure efficient SQL operations. Collaborate with cross-functional teams to deliver high-quality database solutions. Maintain version control and CI … Git and GitLab. Required Skills In-depth knowledge of SQL, T-SQL, and data warehousing concepts. Proven experience with Sybase ASE databases. Proficiency in Linux environments. Strong experience in performancetuning and query optimisation. Familiarity with Git and CI/CD tools (eg, GitLab). Excellent communication and problem-solving skills. Nice to Have Shell Scripting experience. Knowledge More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Montash
workflows. Experiment with new tools, technologies and approaches to support the organisation’s analytics and insights strategy. Provide ongoing support for data products, including incident management and defining key performance metrics. Collaborate on new data initiatives from the earliest stages, working across multiple technical teams to bring ideas to life. Contribute to proof-of-concept evaluations of emerging technologies … AWS QuickSight. Experience with open-source data stack tools like Airflow, DBT, Airbyte or similar. Strong grasp of software development best practices and CI/CD processes. Skilled in performancetuning, testing, and automation within data engineering environments. Excellent communication skills, with the ability to influence and collaborate effectively with stakeholders across teams. Why Join You’ll be More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Ventula Consulting
proficiency and at least 5 years of production experience with Go (Golang) . This role is centered on Go, and we require deep experience with its concurrency patterns and performance tuning. Strong, proven experience designing, building, and scaling high-availability RESTful APIs for mobile or web clients. Deep experience with distributed systems, microservices architecture, and event-driven patterns. Demonstrated More ❯
Oxford, England, United Kingdom Hybrid / WFH Options
McNally Recruitment Ltd
you will be required to work in the office 1 day per month ; otherwise, you will be working remotely . The candidate will be responsible for implementing, maintaining, and tuning high-traffic, multiple database applications as well as migrating existing SQL Server databases. Behavioural Competency: You will have the ability to understand the business in terms of how the … files, binary logs , etc., along with the ability to profile and optimise server resource usage . Good experience in developing, managing, and testing backup and recovery plans. Experience in performancetuning, optimisation, execution plans and indexes , along with best practices for database design. Experience with migrating SQL Server databases to MySQL Strong experience writing performant SQL, stored procedures … design choices (Heap, MyISAM, INNO DB etc) Experience writing performant queries and procedures to ensure optimal solutions Experience working with high-traffic, responsive environments and applications to ensure the performance, security, and availability of databases. Passion for technologies and a desire to remain up to date with the latest skills Knowledge and experience with data security best practices Application More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Techfellow Limited
world-leading quantitative trading firm in the search for an Experienced Software Developer/Engineer to join their OTC technology group in London. This team designs and develops high-performance trading platforms that span both OTC liquidity provision and on-venue execution, covering asset classes such as equities, FX, and crypto. Operating within a highly autonomous environment, the team … works closely with quants, risk and compliance stakeholders, and trading analysts to transform requirements into production-grade systems. With a focus on safety, performance, and velocity, this is a chance to contribute to the design of mission-critical infrastructure with a small, experienced group of engineers where impact is immediate and highly visible... Key Responsibilities Design, build, and maintain … quants, analysts, and compliance stakeholders to refine system requirements and deliver production-ready solutions Implement and optimise low-latency infrastructure, including network stack integration, thread-per-core architectures, and performancetuning Contribute to team-wide design discussions, code reviews, and continuous improvement initiatives Take ownership of projects across the full development lifecycle, from architecture through deployment and monitoring More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Paradigm Talent
integration between computation, data, and science. You should have Deep experience building and scaling backend systems and distributed applications . Strong coding skills in Python , with an understanding of performancetuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . Proficiency with databases — schema design, performance optimization, and analytics. Familiarity with REST APIs … security best practices. A disciplined engineering mindset — you think about reliability, maintainability, and long-term scalability. Nice-to-haves Experience with MLOps and model-serving infrastructure. Background in high-performance computing or large-scale scientific workloads. Expertise in data pipeline architecture and real-time streaming systems. Knowledge of scientific or biological computing environments . This is a rare opportunity More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Paradigm Talent
desktop applications. Design and implement distributed systems for async processing, ML workflows, and asset pipelines. Own authentication, billing, and subscription systems — ensuring reliability and seamless user experience. Drive observability, performancetuning, and deployment automation across the stack. Collaborate closely with product, frontend, and ML teams to deliver features that delight and scale. You should have 5+ years of More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Cubiq Recruitment
result without friction. You’ll have room to experiment, try new approaches, and design systems in a place that backs bold thinking. Key Responsibilities: Build, run, and improve high-performance GPU training and inference clusters with a focus on reliability and automation Design and implement high-throughput data paths, including work on caching, I/O, and data locality … across compute and storage Benchmark, profile, and fix performance issues across compute, network, and orchestration layers Set up clear observability, resilience, and security controls for sensitive research environments Work with Research, Data, and Applied teams to plan GPU and storage capacity and support smoother ML experimentation Technical Skills: Strong experience designing and operating large-scale ML compute clusters Good … understanding of GPU architecture, high-speed networking, and performancetuning for distributed training Experience with modern containerised systems and migrations from traditional schedulers Knowledge of high-throughput storage systems for ML or HPC workloads Solid experience with IaC and CI/CD (Terraform, Argo CD, or similar) What’s on Offer: Salary packages competitive with FAANG businesses An More ❯
Reading, Berkshire, United Kingdom Hybrid / WFH Options
CBSbutler Holdings Limited trading as CBSbutler
Meetings platforms . You'll be the subject matter expert for unified collaboration services, ensuring seamless, secure communication across the organisation. From user administration and troubleshooting to integrations and performancetuning, you'll keep collaboration running at enterprise scale. Key Responsibilities: Administer, configure, and maintain Cisco Webex and Cisco Meetings environments. Manage user accounts, permissions, licensing, and policies. … Monitor system performance and availability - troubleshoot and resolve incidents quickly. Support upgrades, patching, and integrations with other collaboration tools. Work with security and networking teams to enforce compliance and security standards. Develop and maintain documentation, best practices, and operational procedures. Act as an escalation point for collaboration-related support issues. Essential Skills & Experience: Proven experience administering Cisco Webex and More ❯
Reading, Oxfordshire, United Kingdom Hybrid / WFH Options
CBSbutler Holdings Limited trading as CBSbutler
Meetings platforms . You'll be the subject matter expert for unified collaboration services, ensuring seamless, secure communication across the organisation. From user administration and troubleshooting to integrations and performancetuning, you'll keep collaboration running at enterprise scale. Key Responsibilities: Administer, configure, and maintain Cisco Webex and Cisco Meetings environments. Manage user accounts, permissions, licensing, and policies. … Monitor system performance and availability - troubleshoot and resolve incidents quickly. Support upgrades, patching, and integrations with other collaboration tools. Work with security and networking teams to enforce compliance and security standards. Develop and maintain documentation, best practices, and operational procedures. Act as an escalation point for collaboration-related support issues. Essential Skills & Experience: Proven experience administering Cisco Webex and More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Ryder Reid Legal
law firm is seeking an experienced Applications Operations Analyst to join its London office. This is a fantastic opportunity to play a key role in maintaining and improving the performance, security, and reliability of enterprise applications across a dynamic and fast-paced professional services environment. Reporting to the Manager of Applications Operations, the successful candidate will be responsible for … patching, monitoring, and troubleshooting, while also contributing to process improvement, documentation, and integration stability. The role involves close collaboration with infrastructure, security, and business teams to ensure seamless application performance and user experience. Key Responsibilities: Perform system maintenance, patching, and upgrades in line with change management procedures Monitor application health and performance, proactively resolving issues Manage user access … base articles Identify opportunities for automation and process optimisation Track and report on KPIs, system uptime, and user engagement metrics Collaborate with cross-functional teams to support scalability and performancetuning Ideal Candidate Profile: 3+ years of experience in enterprise application support or IT operations Strong troubleshooting and analytical skills Familiarity with ITSM platforms (e.g., ServiceNow) and monitoring More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Radley James
leading global FX trading platform as a Java Engineer, contributing to the backbone of ultra-low latency systems powering high-volume electronic trading. This role focuses on building high-performance, globally distributed Java services that enable real-time transaction processing, configuration management, and support for quantitative research and trading teams. Key Responsibilities: Develop scalable backend systems to support high … frequency FX trading Collaborate with quants and traders to deliver platform enhancements Drive performancetuning and solve low-level technical bottlenecks Maintain high standards in testing, documentation, and code quality Tech Stack & Skills: Strong proficiency in core Java Exposure to JavaScript/TypeScript & HTML5 is a plus Deep understanding of data structures, algorithms, and performance optimization Familiar More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Durlston Partners
generous bonus Durlston Partners is working with a leading HFT firm seeking a C++ Software Engineer to join their trading infrastructure team. You will design, implement, and optimise high-performance trading systems that operate in real-time across global markets. What You’ll Do: Develop and optimize high-performance C++ trading infrastructure Work on low-latency, multithreaded systems … to implement strategies What They’re Looking For: Relevant working in Systematic Trading/Crypto/Finance Strong C++ skills and systems programming experience Experience with networking, concurrency, and performancetuning Perks: Competitive pay and bonuses Cutting-edge tech and challenging problems Strong project ownership Great benefits package Hybrid working, with a great office space in London How More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Quant Capital
FPGA ENGINEER – ULTRA-LOW LATENCY SYSTEMS Location: London (Hybrid: 4 days onsite) Sector: Quant Trading/High-Performance Computing Industry leading compensation Quant Capital is partnering with a global trading firm building a greenfield FPGA team focused on low-latency, high-throughput hardware systems. This small, senior group will deliver high-speed compute infrastructure integrated directly into trading, research … We’re Looking For Strong RTL skills with experience building complex, optimised designs Programming skills, C, C++ or similar Solid grasp of timing closure, datapath design, and hardware-level performancetuning Familiar with toolchains (Vivado, Quartus) and debugging workflows Comfortable working close to hardware and owning the full development cycle Interest in improving hardware workflows or applying high More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Mongoose Gray
The 3rd Line Engineer will ensure IT systems are robust and free from security threats and vulnerabilities. The 3rd Line Engineer will foster a culture of first-class system performancetuning and optimisation. The 3rd Line Engineer will be comfortable with networking concepts and protocols. The 3rd Line Engineer will be up-to-date with the latest developments More ❯