City of London, England, United Kingdom Hybrid / WFH Options
ACLED
will develop high-impact tools and interfaces to make ACLED’s content and data accessible, performant, and actionable for global users. Responsibilities include front-end UI development, API services, performance optimization, and DevOps workflows. The position reports to the Enterprise Architect. It is fully remote, and candidates from all locations are encouraged to apply. The start date is July … 2025. Responsibilities API Development & Management: Develop scalable, secure APIs; implement authentication; manage API gateways; monitor performance; ensure security standards; integrate APIs with systems; support BCP and DR planning. Web & Front-End Development: Build and maintain web interfaces; collaborate on website features; design responsive, accessible UI; optimize performance; support security testing; ensure cross-browser/device compatibility. DevOps & Deployment … Build CI/CD pipelines; manage Docker/Kubernetes deployments; deploy on cloud infrastructure; monitor operational performance and data security. Collaboration & Growth: Work with data scientists and developers; propose new features; research new technologies to keep the platform modern and competitive. Skills & Experience Required: Degree in Computer Science, Software Engineering, or related field. 3-5 years professional experience as More ❯
City of London, England, United Kingdom Hybrid / WFH Options
Keyrock
mid/high-frequency, large-scale trading platforms that provide Keyrock with a competitive advantage. You will oversee the entire development lifecycle - from initial architecture and code reviews to performanceoptimisation and continuous deployment - harmonising strategic vision with hands-on engineering. You will foster a culture of innovation and collaboration, working closely with Product, Quantitative Research and Operations … to translate strategic objectives into scalable systems and measurable outcomes. Ultimately, you will ensure the delivery of secure, reliable and high-performance solutions that maintain Keyrock’s market leadership. Job Description Lead and manage a team of talented engineers, fostering a culture of innovation, collaboration, and excellence. Drive the design, development, and maintenance of high-concurrency, high-performance … managers to align with our company-wide technical strategy. Key Responsibilities Provide both strategic direction and day-to-day hands-on development across our suite of high-concurrency, high-performance trading platforms. Lead, mentor and inspire a multidisciplinary team of engineers, embedding a growth mindset, agile practices and engineering excellence. Partner with Product Management to translate roadmap objectives into More ❯
London, England, United Kingdom Hybrid / WFH Options
OnHires
technologies to deliver highly reliable, data-driven services to users across multiple geographies. As part of the team, you will contribute to both backend and frontend development while ensuring performance, security, and scalability. Key Responsibilities: Develop and maintain full-stack web applications using PHP and modern frontend technologies. Design and implement scalable solutions in multi-server environments. Work with … AWS cloud services to build robust, distributed systems. Optimize database performance and design efficient data structures. Implement and manage queue systems for asynchronous processing. Collaborate with cross-functional teams to deliver high-quality software solutions. Mentor junior developers and contribute to technical decision-making. Required Skills & Experience: Backend Development 5+ years of PHP development experience. Expert-level knowledge of … communication and teamwork abilities. Nice to Have: Experience with microservices architecture. Knowledge of additional AWS services (ElastiCache, CloudWatch, etc.). Familiarity with Elasticsearch or similar search engines. Experience with performance optimization and monitoring tools. DevOps experience and infrastructure as code (Terraform, CloudFormation). System administration experience with web servers (Apache, Nginx). What We Offer: Competitive salary and benefits More ❯
solutions. Desirable Experience with containerisation and orchestration tools such as Docker and Kubernetes. Familiarity with event-driven architecture and message brokers (e.g., Kafka, RabbitMQ). Knowledge of front-end performanceoptimisation and accessibility standards. Exposure to machine learning pipelines or data engineering workflows. Prior experience working in startup environments or high-growth technology companies. Benefits Hybrid working as More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Reed.ai
solutions. Desirable Experience with containerisation and orchestration tools such as Docker and Kubernetes. Familiarity with event-driven architecture and message brokers (e.g., Kafka, RabbitMQ). Knowledge of front-end performanceoptimisation and accessibility standards. Exposure to machine learning pipelines or data engineering workflows. Prior experience working in startup environments or high-growth technology companies. Benefits Hybrid working as More ❯
London, England, United Kingdom Hybrid / WFH Options
Reed.ai
delivering solutions. Experience with containerisation and orchestration tools such as Docker and Kubernetes. Familiarity with event-driven architecture and message brokers (e.g., Kafka, RabbitMQ). Knowledge of front-end performanceoptimisation and accessibility standards. Exposure to machine learning pipelines or data engineering workflows. Prior experience working in startup environments or high-growth technology companies. Hybrid working as standard More ❯
Isleworth, England, United Kingdom Hybrid / WFH Options
Sky
protocols and best practices Proven 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/Livestream environment Pro- active attitude More ❯
practices with hands-on expertise in GitHub Actions, Jenkins, and GitOps workflows. Strong knowledge of advanced DevOps concepts, including progressive delivery strategies (blue/green, canary), resilience engineering, and performance optimisation. Deep understanding of cloud security, governance, and compliance, with the ability to define and implement scalable security frameworks. Proven ability to drive cross-functional technical initiatives, influence without More ❯
London, England, United Kingdom Hybrid / WFH Options
Paymentology
solutions, and migration strategies to support Paymentology's business objectives. This role involves assessing existing IT infrastructure, identifying opportunities for cloud adoption, and recommending migration strategies based on cost, performance, and security considerations. The Cloud Architect defines cloud architecture principles, standards, and best practices, ensuring compliance with industry standards and regulatory requirements. This role designs scalable, resilient, and highly … available cloud infrastructure solutions using Infrastructure as Code (IaC) tools and automation techniques. Additionally, the role includes implementing cloud security measures, optimising resource utilisation and performance, and supporting the implementation of cloud-based solutions across AWS, Azure, and OCI platforms. What you get to do:: Cloud Design And Development Lead the design and development of Google Cloud Platform (GCP … GKE (Google Kubernetes) Design and optimise GCP Implement Identity and Access Management (IAM) and Security Policies Work with Google Anthos, Kubernetes, and container-based architectures Optimise GCP cost and performance, ensuring efficiency across environments (Optional) Provide expertise in AWS, Azure, and OCI when needed Kafka And Kubernetes Platform Management Design, deploy, and maintain scalable Kafka and Kubernetes clusters to More ❯
London, England, United Kingdom Hybrid / WFH Options
Circana
data workflows to ensure smooth and reliable deployments. Big Data & Analytics: Develop and optimize large-scale data processing pipelines using Apache Spark and PySpark. Implement data partitioning, caching, and performance tuning techniques to enhance Spark-based workloads. Work with diverse data formats (structured and unstructured) to support advanced analytics and machine learning initiatives. Workflow Orchestration (Airflow): Design and maintain … Airflow. Strong programming skills in Python and SQL, with the ability to write efficient and maintainable code. Deep understanding of Spark internals, including RDDs, DataFrames, DAG execution, partitioning, and performance optimization techniques. Experience with designing and managing Airflow DAGs, scheduling, and dependency management. Knowledge of CI/CD pipelines, containerization technologies (Docker, Kubernetes), and DevOps principles applied to data … days ago London, England, United Kingdom 1 week ago London, England, United Kingdom 4 days ago Manchester, England, United Kingdom 1 week ago Senior Fraud Strategy Data Analyst - Control Optimisation London, England, United Kingdom 1 month ago Birmingham, England, United Kingdom 1 week ago Edinburgh, Scotland, United Kingdom 1 week ago London, England, United Kingdom 1 week ago Newcastle More ❯
London, England, United Kingdom Hybrid / WFH Options
WRITER
our systems. You will collaborate closely with our cross-functional teams to build scalable and efficient solutions. Your expertise in Scala will be instrumental in implementing robust and high-performance backend services. ????️ Your Responsibilities Design, develop, and maintain backend systems and APIs using Scala and related technologies Collaborate with data scientists and machine learning engineers to integrate AI models … into the backend infrastructure Optimize and scale backend services to handle large volumes of data and ensure high performance Implement data storage and retrieval mechanisms, ensuring data integrity and security. Work closely with frontend developers to define and implement APIs that meet the requirements of the user interface Collaborate with SREs to deploy and monitor backend services in a … +years of recent professional experience in functional programming and Scala Proficient in Cats Effect or similar technologies, such as ZIO, Monix, or Scalaz, to design, develop, and maintain high-performance, scalable, and resilient distributed systems Exceptional understanding of backend development principles, including RESTful APIs, microservices architecture, and database design. Familiarity with cloud platforms (e.g., AWS, GCP, or Azure) and More ❯
London, England, United Kingdom Hybrid / WFH Options
Parser
and frontend components. UI Integration: Collaborate with front-end developers to ensure proper integration of backend logic with the ReactJS user interface. Optimization: Continuously optimize the Python code for performance, ensuring minimal computational cost and maximal scalability. Collaboration: Work closely with project stakeholders to refine requirements, align expectations, and deliver on technical needs. Documentation and Code Quality: Write high … Git for version control. Experience with CI/CD pipelines for streamlined development and deployment processes. Strong analytical and problem-solving skills, with the ability to optimize code for performance and scalability. Familiarity with performance optimization techniques for computational models, particularly when dealing with large datasets or complex calculations. Excellent communication skills, with the ability to collaborate effectively More ❯
London, England, United Kingdom Hybrid / WFH Options
bigspark
for modern analytics to our clients through expertise in DevOps, distributed computing, machine learning and adoption of proven open source projects. We specialise in backend development, infrastructure automation and performance engineering for data workloads at scale. Role Purpose The Python Software Engineer will work in the core product team on our Flagship Product, Aizle.ai alongside a team of Data … based models within the core product. Develop clean, efficient, and maintainable Python code. Design scalable and modular system architectures for complex simulations. Ensure simulation reliability through rigorous testing and performance benchmarking. Collaborate with data scientists, product managers, and infrastructure teams. Implement real-time monitoring and logging frameworks. Conduct thorough automated testing to ensure full feature coverage. Deploy via CI … AWS). Monitor post-release application health and performance. Validate simulation outputs to meet client requirements. Create technical documentation and contribute to knowledge-sharing initiatives. Drive continuous improvement through performance optimization and innovation initiatives. Skills And Experience Deep expertise in Python, with a strong emphasis on object-oriented programming (OOP) principles to develop, maintain, and innovate scalable data products. More ❯
London, England, United Kingdom Hybrid / WFH Options
JR United Kingdom
Handlebars.js for rendering dynamic content. Integrate third-party services like Stripe, PayPal, BigCommerce, and other ecommerce applications. Develop scripts and optimize database queries using PostgreSQL or MySQL. Ensure high performance, scalability, and SEO optimization. Implement best practices for code versioning, branching, and merging (Git, GitHub, GitLab). Deploy and maintain applications using Docker, AWS, and CI/CD pipelines. … Commerce Services: Stripe, Square, PayPal. Nice to have: Frontend Technologies Frontend Frameworks: Next.js, React (including Server Components), Vue, Nuxt, Angular. Progressive Web Apps (PWA) & SPA Development: Service Workers. SEO & Performance Optimization: PageSpeed Insights, Google Search Console, Google Analytics. Node.js Frameworks: Koa, Express.js, Hapi, Meteor, LoopBack. API Development: OpenAPI (REST APIs), GraphQL, SOAP. Authentication: next-auth, Supabase, Auth0, Keycloak, AWS More ❯
London, England, United Kingdom Hybrid / WFH Options
JR United Kingdom
contribute to internal documentation. Required Skills & Experience 5+ years of commercial experience in C# and .NET. Expertise in: .NET Framework and WinForms Modern .NET (.NET 9) SQL Server (including performanceoptimisation) Front-end tech (HTML, CSS, JavaScript) Proven experience with application modernisation, including migrating legacy WinForms applications to modern web platforms (Blazor preferred). ·Strong understanding of layered More ❯
Hounslow, England, United Kingdom Hybrid / WFH Options
JR United Kingdom
contribute to internal documentation. Required Skills & Experience 5+ years of commercial experience in C# and .NET. Expertise in: .NET Framework and WinForms Modern .NET (.NET 9) SQL Server (including performanceoptimisation) Front-end tech (HTML, CSS, JavaScript) Proven experience with application modernisation, including migrating legacy WinForms applications to modern web platforms (Blazor preferred). ·Strong understanding of layered More ❯
London, England, United Kingdom Hybrid / WFH Options
Blockchain Ventures
and slippage reduction in dynamic market conditions. Promote best practices in software engineering, advocating for clean, scalable, and maintainable code to ensure that systems are built with both immediate performance and long-term sustainability in mind. Collaborate with cross-functional teams to quickly adapt the trading platform to new data, market conditions, and business needs. Communicate effectively with both … teams (trading, quants), and leadership, especially when discussing complex technical solutions or business goals. Ensure high availability, reliability, and scalability of trading systems while maintaining a sharp focus on performance and testing. Drive technical decision-making and contribute to high-level architecture discussions, ensuring that all solutions align with the company’s goals for scalability, performance, and security. … Be a technical advocate for excellence, leading efforts to improve development processes, code quality, and overall system performance through best practices and knowledge sharing. Prioritize rapid iteration of trading algorithms to ensure maximum profitability, minimal risk, and fast execution, adapting quickly to volatile market conditions. WHAT YOU WILL NEED Extensive experience in Rust and/or C++, building high More ❯
London, England, United Kingdom Hybrid / WFH Options
Blockchain.com
and slippage reduction in dynamic market conditions. Promote best practices in software engineering, advocating for clean, scalable, and maintainable code to ensure that systems are built with both immediate performance and long-term sustainability in mind. Collaborate with cross-functional teams, to quickly adapt the trading platform to new data, market conditions, and business needs. Communicate effectively with both … teams (trading, quants), and leadership, especially when discussing complex technical solutions or business goals. Ensure high availability, reliability, and scalability of trading systems while maintaining a sharp focus on performance and testing. Drive technical decision-making and contribute to high-level architecture discussions, ensuring that all solutions align with the company’s goals for scalability, performance, and security. … Be a technical advocate for excellence, leading efforts to improve development processes, code quality, and overall system performance through best practices and knowledge sharing. Prioritize rapid iteration of trading algorithms to ensure maximum profitability, minimal risk, and fast execution, adapting quickly to volatile market conditions. WHAT YOU WILL NEED Extensive experience in Rust and/or C++, building high More ❯
London, England, United Kingdom Hybrid / WFH Options
Back-Factory
developers to integrate UI components with APIs and databases. Gather and refine specifications and requirements based on technical needs or UX design. Debug errors, troubleshoot issues, and perform routine performance optimizations. Implement and maintain database structures and queries. Ensure the security and integrity of back-end systems. Stay updated on emerging technologies and industry trends. Provide support to other … Previous experience in mentoring. Benefits Flexible Working Hours: Value-driven, not 9-5. Remote Work: Work from anywhere with flexible hours. Competitive Salary: Adjusted based on your region. Performance Bonuses: Rewarding excellence. Global Projects: Work with leading brands. FUTURESIGHT is a digital design studio, digital marketing agency, and co-founder of a fast-growing international digital group that More ❯
London, England, United Kingdom Hybrid / WFH Options
SAP
support SAT team projects. Develop and manage CI/CD pipelines to automate deployment and ensure high availability of services. Collaborate with software development teams to enhance application scalability, performance, and reliability. Implement Infrastructure as Code (IaC) using tools like Terraform, Bicep, or ARM templates. Ensure system security and compliance with organizational standards and best practices. Monitor system performance … vulnerabilities and ensure data protection within regional boundaries. Support OCP development efforts by providing expertise in Azure services and infrastructure management. Drive improvements in deployment automation, system reliability, and performance optimization. Document technical processes, configurations, and best practices for the SAT team knowledge base. What you bring 6+ years of experience as a DevOps Engineer, with a strong focus More ❯
London, England, United Kingdom Hybrid / WFH Options
SAP SE
security (NSGs, ASGs), and governance policies to ensure compliance and risk mitigation. Monitoring & Logging : Experience with Azure Monitor, Application Insights, Log Analytics, and Prometheus/Grafana for observability and performance monitoring. Scripting & Automation : Strong scripting skills in PowerShell, Bash, and Python , along with automation frameworks like Ansible . Collaboration & Problem-Solving : Ability to work closely with development, security, and … operations teams, applying DevOps methodologies to streamline processes and enhance system reliability. Performance Optimization : Expertise in tuning cloud applications for cost efficiency, scalability, and high availability , leveraging Azure Autoscaling, Load Balancers, andTraffic Manager . At least 5 years of hands-on experience in Azure Hyperscale/DevOps. Over 10 years of experience in DevOps roles, driving automation, scalability, and More ❯
pipelines, and cloud infrastructure (AWS, Azure, or equivalent). Database & API Management - Design efficient PostgreSQL and MongoDB schemas and develop secure RESTful/GraphQL APIs for seamless data integration. Performance Optimisation. System Architecture & Scalability. Code Review & Quality Assurance. Security Best Practices. Skills and Experience: Essential: Proficiency in JavaScript/TypeScript, React, Node.js, PostgreSQL, and MongoDB. Experience with Directus or More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Evermore
pipelines, and cloud infrastructure (AWS, Azure, or equivalent). Database & API Management – Design efficient PostgreSQL and MongoDB schemas and develop secure RESTful/GraphQL APIs for seamless data integration. Performance Optimisation. System Architecture & Scalability. Code Review & Quality Assurance. Security Best Practices. Skills and Experience: Essential: Proficiency in JavaScript/TypeScript, React, Node.js, PostgreSQL, and MongoDB. Experience with Directus or More ❯
South East London, England, United Kingdom Hybrid / WFH Options
Evermore
pipelines, and cloud infrastructure (AWS, Azure, or equivalent). Database & API Management – Design efficient PostgreSQL and MongoDB schemas and develop secure RESTful/GraphQL APIs for seamless data integration. Performance Optimisation. System Architecture & Scalability. Code Review & Quality Assurance. Security Best Practices. Skills and Experience: Essential: Proficiency in JavaScript/TypeScript, React, Node.js, PostgreSQL, and MongoDB. Experience with Directus or More ❯
London, England, United Kingdom Hybrid / WFH Options
Version 1
solution design and development of our digital products. Your role involves ensuring that the code aligns with these requirements and adheres to our architectural and front-end coding standards. Performanceoptimisation is key, and you'll employ best practices to enhance our applications. Additionally, you'll stay proactive by suggesting upgrades and updates to maintain modern security standards … Version 1, we believe in providing our employees with a comprehensive benefits package that prioritises their wellbeing, professional growth, and financial stability. Share in our success with our Quarterly Performance-Related Profit Share Scheme, where employees collectively benefit from a share of our company's profits. Strong Career Progression & mentorship coaching through our Strength in Balance & Leadership schemes with More ❯