6 of 6 Design Patterns Jobs in the City of London

you ll play a key part in ensuring the reliability, security, and scalability of complex systems while collaborating with talented teams across development, QA, and operations. Key Responsibilities Design and develop scalable, high-performance solutions on AWS with a focus on robust architecture and efficient code. Continuously monitor and optimise AWS resources for performance, security, and cost efficiency. … standards across all AWS environments. Troubleshoot and resolve complex technical issues as part of incident response efforts. Maintain detailed documentation of architectures, configurations, and processes. Apply design patterns to ensure code reusability and maintainability. Develop and execute unit tests, following test-driven development (TDD) principles. Translate business requirements into technical deliverables to meet project goals. Key Skills … other languages such as Go is also welcome. Excellent problem-solving and troubleshooting skills. Strong communication and collaboration abilities, working effectively in Agile teams. Knowledge of design patterns, coding standards, and best practices. Experience with unit testing frameworks and TDD methodologies. AWS Certification (or equivalent) is highly desirable. What s on Offer Fully remote working from anywhere More ❯

both internal customers and end users. Your skills and experience What you'll bring: * Experience of Java * Experience of Spring framework or equivalent. * Knowledge of software design patterns and when to apply them * Excellent knowledge of development processes. * Experience of containerisation using Docker or Kubernetes * Experience of Continuous Integration (CI) and Continuous Delivery (CD) * A passion for … delivering quality code, by use of TDD and setting high software quality standard We're also using the following technologies and patterns, it would be great if you had some of the skills, if not we can help develop them: * Designing microservice-based architectures using domain driven design (DDD). CQRS and Event Sourcing patterns * Kubernetes More ❯

a good knowledge of networking protocols e.g. TCP/IP, multicast You have a strong grounding in Computer Science fundamentals e.g. multi-threading, OOP, Data Structures, Design Patterns You're collaborative with great communication skills What's in it for you: *Please note this is a 12 month Fixed Term Contract, with full benefits* As a C++ More ❯

directly with quants and strategy teams and build low-latency backend components and APIs with C#/.Net, plus occasional frontend work in React. What you'll do: Design and develop real-time trading and pricing systems Lead greenfield feature builds with significant business impact Build backend services, APIs and trading engine components in C# Collaborate closely with … strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns, Data Structures, Algorithms You are collaborative with excellent communication and stakeholder management skills You are degree educated in Computer Science or similar technical discipline What's in it for More ❯

dining all designed to support well-being and balance. The Opportunity Youll join the Equities Cash Technology team a global group of highly skilled engineers and quants who design, build, and optimise low-latency electronic trading systems used across EMEA and beyond. Youll work hands-on with core Java frameworks, enhancing benchmark algo engines, smart order routing systems … of market data in real time. This role involves both strategic development and core framework engineering, with close collaboration across quantitative trading and front-office teams. The Goal Design and deliver enhancements to algorithmic trading engines and supporting frameworks Collaborate with quants and traders to define and deliver trading logic Develop and optimise low-latency, high-throughput Java …/O, and JVM tuning Experience designing front-office trading systems (algo, SOR, execution platforms) Familiarity with benchmark algos (VWAP, TWAP, Arrival Price) Understanding of key design patterns (Observer, Factory, Singleton) Hands-on experience with Git, CI/CD, Maven/Gradle, and modern IDEs (Eclipse/IntelliJ) Excellent communication and problem-solving skills Why Join Build More ❯

analysts every day. If you enjoy solving real-time systems challenges, writing clean C# in cloud-first architectures, and partnering with the desk, this role is for you. Design & build resilient C#/.NET services and APIs powering pricing, market data ingestion, trade capture, and risk analytics. Integrate with ETRM/CTRM platforms (e.g., Endur, in-house risk … trading, risk, and operations to refine requirements and ship increments in Agile sprints. Harden production with observability (logging/metrics/tracing), CI/CD, and secure-by-design patterns. Own features end-to-end-from design and documentation to deployment and support. What you'll bring Strong C#/.NET engineering skills (async/await … Experience building microservices and REST/gRPC APIs; solid understanding of messaging (Kafka/RabbitMQ) and event-driven patterns. SQL expertise (SQL Server/PostgreSQL); comfort with schema design, performance tuning, and data reconciliation. Practical knowledge of cloud (Azure/AWS) , containers (Docker/Kubernetes), and CI/CD (GitHub Actions/Azure DevOps). A product mindset More ❯