26 to 50 of 77 OOP Jobs in the City of London

to translate AI models into production-ready systems. Tech Stack & Requirements The platform is primarily built using Python and TypeScript , but we welcome engineers from any strong object-oriented programming background. Candidates with experience in trading systems, big tech, or AI-driven products often thrive here due to the performance, scalability, and reliability challenges involved. We’re More ❯

to understand real-world requirements and translate them into elegant technical solutions. What We’re Looking For Solid understanding of Java and core computer science principles (data structures, algorithms, OOP). Strong problem-solving skills and attention to detail. Eagerness to learn about trading systems, low-latency development, and financial markets. Experience with data analytics tools or frameworks (Python, SQL More ❯

software development lifecycle experience You have 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 More ❯

Officer), or be willing to become a DPO. Experience of influencing and collaborating with senior stakeholders across multiple functions. Strong background in database scripting (preferably MySQL) and object-oriented programming (e.g., Python). Demonstrated success in delivering strategic, data-driven business solutions. More ❯

Officer), or be willing to become a DPO. Experience of influencing and collaborating with senior stakeholders across multiple functions. Strong background in database scripting (preferably MySQL) and object-oriented programming (e.g., Python). Demonstrated success in delivering strategic, data-driven business solutions. More ❯

and non-functional testing ⚡ Contribute to CI/CD practices with Jenkins and Git 🕵️ Troubleshoot, propose improvements, and stay ahead of emerging technologies 💡 What you’ll bring: 🔑 Strong Java & OOP experience 📊 Background in data platforms, frameworks & streaming technologies 🧩 Familiarity with microservices & distributed systems ☁️ Exposure to GCP (GKE, PubSub, BigQuery) 🗄️ Experience with relational/NoSQL databases 🐳 Proficiency with Docker & Kubernetes 🔄 Solid More ❯

and non-functional testing ⚡ Contribute to CI/CD practices with Jenkins and Git 🕵️ Troubleshoot, propose improvements, and stay ahead of emerging technologies 💡 What you’ll bring: 🔑 Strong Java & OOP experience 📊 Background in data platforms, frameworks & streaming technologies 🧩 Familiarity with microservices & distributed systems ☁️ Exposure to GCP (GKE, PubSub, BigQuery) 🗄️ Experience with relational/NoSQL databases 🐳 Proficiency with Docker & Kubernetes 🔄 Solid More ❯

uncover edge cases and ensure robustness Pair with developers to enhance testing infrastructure for continuous delivery Proactively identify areas for improvement in software quality Essential Experience: Strong Object-Oriented Programming in Java (ideally Core Java) Proven background as an SDET Component testing, end-to-end testing & failure scenario testing Exploratory testing Desirable Experience: Continuous Delivery & CI/ More ❯

stakeholders to define products and requirements and collaborating with senior engineers to ensure solutions meet business objectives. You should be comfortable reading and reviewing code (especially Java or other OOP languages), participating in code reviews, and providing technical input — though not necessarily writing production code. Experience with real-time trading systems and UI design from a product perspective is highly More ❯

stakeholders to define products and requirements and collaborating with senior engineers to ensure solutions meet business objectives. You should be comfortable reading and reviewing code (especially Java or other OOP languages), participating in code reviews, and providing technical input — though not necessarily writing production code. Experience with real-time trading systems and UI design from a product perspective is highly More ❯

problem analysis, issue resolution, and system troubleshooting. Strong communication skills both verbal and written. Proficiency with MS Office Suite (Word, Excel, PowerPoint) and MS Outlook. Knowledge of object-oriented programming, Oracle administration, and system administration is a plus. More ❯

Calypso Architecture, Modules and Tools. Skilled in developing and maintaining interface designs for applications. Proficient in Java, with a good knowledge of its ecosystems and proficiency in object-oriented programming Knowledge on Collections API. Control structures, access modifier, exception handling. Thorough understanding of complete Software Development Lifecycle Self-motivated, good interpersonal skills and inclination to constantly upgrade More ❯

Calypso Architecture, Modules and Tools. Skilled in developing and maintaining interface designs for applications. Proficient in Java, with a good knowledge of its ecosystems and proficiency in object-oriented programming Knowledge on Collections API. Control structures, access modifier, exception handling. Thorough understanding of complete Software Development Lifecycle Self-motivated, good interpersonal skills and inclination to constantly upgrade More ❯

systems and large-scale data pipelines to real-time detection and automation. Every line of code you write will have real impact. 💡 They’re after someone who: Has solid OOP experience (Python, Java, Go, or Rust — core stack: C# , and they’ll help you get up to speed) Loves simplifying complex systems into clean, scalable solutions Thrives in a fast More ❯

massive impact. You’ll be joining a world-class engineering team, building from scratch, and solving real customer challenges at scale. They’re looking for someone who: 💡 Has solid OOP skills (Python, Java, Go, or Rust all welcome - core stack is C#, and they’ll help you upskill) ⚙️ Loves turning complex problems into elegant, scalable solutions 🔥 Thrives in a fast More ❯

complex, real-world settings Collaboration and direct engagement with end users A willingness to travel and work closely with customers to make an impact They’re open to all OOP backgrounds (Python, C++, or Java), with modern frameworks like React or Angular in play. 📍 London | Hybrid (4x days onsite + travel as needed) Interested? Apply now More ❯

complex, real-world settings Collaboration and direct engagement with end users A willingness to travel and work closely with customers to make an impact They’re open to all OOP backgrounds (Python, C++, or Java), with modern frameworks like React or Angular in play. 📍 London | Hybrid (4x days onsite + travel as needed) Interested? Apply now More ❯

improvement What They're Looking For 5+ years’ experience with .NET, SQL Server, Entity Framework, and Azure Solid understanding of distributed systems and event-driven design Strong grasp of OOP principles and microservices A self-starter with a problem-solving mindset and a passion for clean, scalable code Why It’s a Great Move You’ll be part of a More ❯

improvement What They're Looking For 5+ years’ experience with .NET, SQL Server, Entity Framework, and Azure Solid understanding of distributed systems and event-driven design Strong grasp of OOP principles and microservices A self-starter with a problem-solving mindset and a passion for clean, scalable code Why It’s a Great Move You’ll be part of a More ❯

permanent basis in London. There are multiple roles across risk and FX within this company and the ideal candidate will come from a financial services company. Key Skills: C# OOP Up to £130K on the base plus market leading package More ❯

permanent basis in London. There are multiple roles across risk and FX within this company and the ideal candidate will come from a financial services company. Key Skills: C# OOP Up to £130K on the base plus market leading package More ❯

improve Passion for clean energy and solving climate challenges A collaborative mindset and comfort in startup pace Their core stack is Python , but they’re open to all modern OOP languages. 📍 Hybrid in London (2–3 days onsite) If you’re ready to code for something that truly matters - apply now More ❯

drive to tackle climate change through technology Comfort with ambiguity and startup pace Interest in mentoring and growing a tight-knit, mission-driven team They’re open to all OOP languages (core stack is Python ). 📍 London | Hybrid (2-3 days/week) If you’re ready to build software that accelerates the shift to clean energy - apply now More ❯

drive to tackle climate change through technology Comfort with ambiguity and startup pace Interest in mentoring and growing a tight-knit, mission-driven team They’re open to all OOP languages (core stack is Python ). 📍 London | Hybrid (2-3 days/week) If you’re ready to build software that accelerates the shift to clean energy - apply now More ❯

REST APIs to fetch and send data between front-end and back-end systems. Required Skills & Experience: 1. Python Programming Strong understanding of functions, classes, and object-oriented programming (OOP) . Experience with list comprehensions, generators, and error handling . Proficiency in managing virtual environments and package dependencies using tools like pip and venv. 2. Data More ❯