Greater London, England, United Kingdom Hybrid/Remote Options
Rooya
About us: Rooya is an innovative company transforming fleet management and insurance through advanced AI-vision telematics technology. Our platform leverages computer vision to provide optimized decision-making solutions for the insurance and fleet management industries. Job Overview We are seeking an experienced Senior Android Kotlin Engineer to join our team. The ideal candidate should have extensive experience … working with Android SDK components such as Camera2, MediaCodec, MediaMuxer, GPS, and Sensors . Additional expertise in OpenGL, Native JNI/C++, and memory optimization techniques would be a strong advantage. This role requires deep technical knowledge and hands-on experience in developing high-performance Android applications. Key Responsibilities Develop, optimize, and maintain high-quality Android applications using Kotlin … . Work with Camera2, MediaCodec, and MediaMuxer to implement advanced media processing features. Integrate GPS and sensor-based functionalities into Android applications. Optimize memorymanagement and performance for efficient app functionality. Utilize Native JNI/C++ to enhance application performance where necessary. Troubleshoot, debug, and resolve performance bottlenecks in Android applications. Requirements Proven experience as an Android Developer More ❯
and approaches to mobile development - we tackle complex engineering challenges with creativity and ingenuity Optimise mobile applications for performance, usability and responsiveness across different devices and screen sizes Master memorymanagement,multithreading and concurrencymechanisms to enhance performance and responsiveness of mobileapplications Design for scalability, considering factors such as data caching,network bandwidth and server load Prioritise customer satisfaction … development Excellent communication and interpersonal skills Proficiency with Jetpack Compose for Android, and familiarity with Rust Strong understanding of mobile app architecture, design patterns and best practices Knowledge of memorymanagement techniques and best practices Experience with multithreading and concurrency in mobile applications Good understanding of scalability considerations when it comes toengineering mobile applications Previousexperience working in a More ❯
production stability. Key Skills & Experience 7+ years’ professional experience in C++ (C++17/20 preferred) within low-latency, real-time, or high-frequency environments. Strong knowledge of multithreading, concurrency, memorymanagement, and lock-free data structures. Proven experience optimising network I/O, kernel bypass, and performance tuning (e.g. DPDK, RDMA, kernel tuning). Solid understanding of Linux More ❯
production stability. Key Skills & Experience 7+ years’ professional experience in C++ (C++17/20 preferred) within low-latency, real-time, or high-frequency environments. Strong knowledge of multithreading, concurrency, memorymanagement, and lock-free data structures. Proven experience optimising network I/O, kernel bypass, and performance tuning (e.g. DPDK, RDMA, kernel tuning). Solid understanding of Linux More ❯
development experience , ideally within Front Office or Capital Markets . Proven background in low-latency design and high-throughput systems . Deep understanding of JVM internals , concurrency models , and memorymanagement . Knowledge of at least one asset class: FX, Rates, Credit, or Equities . Strong communication skills and the ability to discuss performance challenges at a granular More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Intellect Group
development experience , ideally within Front Office or Capital Markets . Proven background in low-latency design and high-throughput systems . Deep understanding of JVM internals , concurrency models , and memorymanagement . Knowledge of at least one asset class: FX, Rates, Credit, or Equities . Strong communication skills and the ability to discuss performance challenges at a granular More ❯
line support Deliver framework-level improvements for throughput, resilience, and scalability Participate in peer reviews, mentoring, and agile ceremonies Required Skills & Experience Expert-level Core Java (collections, concurrency, NIO, memorymanagement) Strong understanding of multithreaded systems and low-latency I/O Deep familiarity with design patterns (Observer, Factory, Singleton, etc.) Experience with TDD , GIT , Maven/Gradle More ❯
line support Deliver framework-level improvements for throughput, resilience, and scalability Participate in peer reviews, mentoring, and agile ceremonies Required Skills & Experience Expert-level Core Java (collections, concurrency, NIO, memorymanagement) Strong understanding of multithreaded systems and low-latency I/O Deep familiarity with design patterns (Observer, Factory, Singleton, etc.) Experience with TDD , GIT , Maven/Gradle More ❯
You follow TDD/BDD and value the benefits of testing You know what good code looks like and enforce the standards during PRs You know how to use memory profilers and look at heap dumps You are degree educated, Computer Science preferred or any STEM Minimum Java experience: 10 years Preferred Skills: TransFICC Experience, highly desirable Hot Code … path optimization, Off-heap memorymanagement techniques JVM internals, tuning for low-latency Low-latency messaging & data structures, network protocols, network I/O in Java LMAX Disruptor, Multi-Reactor, Chronicle Queue/Map, Aeron/Agrona or similar Your “can do” and helpful attitude matters the most More ❯
You follow TDD/BDD and value the benefits of testing You know what good code looks like and enforce the standards during PRs You know how to use memory profilers and look at heap dumps You are degree educated, Computer Science preferred or any STEM Minimum Java experience: 10 years Preferred Skills: TransFICC Experience, highly desirable Hot Code … path optimization, Off-heap memorymanagement techniques JVM internals, tuning for low-latency Low-latency messaging & data structures, network protocols, network I/O in Java LMAX Disruptor, Multi-Reactor, Chronicle Queue/Map, Aeron/Agrona or similar Your “can do” and helpful attitude matters the most More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Harrington Starr
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, minimal memory usage, and rock-solid scalability. This is a hands on role where you’ll 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 … for Solid experience in software engineering with strong experience in Python, Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memorymanagement, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL Server, or similar) Experience with containerised and cloud-native environments ( Kubernetes, Docker, AWS, Azure ) Familiarity with More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Harrington Starr
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, minimal memory usage, and rock-solid scalability. This is a hands on role where you’ll 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 … years commercial experience in software engineering with strong experience in Python, Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memorymanagement, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL Server, or similar) Experience with containerised and cloud-native environments ( Kubernetes, Docker, AWS, Azure ) Familiarity with More ❯
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, minimal memory usage, and rock-solid scalability. This is a hands on role where you’ll 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 … years commercial experience in software engineering with strong experience in Python, Java, or C# Proven track record of performance tuning in large-scale, distributed systems Expertise in profiling tools, memorymanagement, and debugging complex performance issues Strong database optimisation skills (Postgres, SQL Server, or similar) Experience with containerised and cloud-native environments ( Kubernetes, Docker, AWS, Azure ) Familiarity with More ❯
Java development experience Solid understanding of Java architecture and design patterns Excellent debugging and unit testing skills Experience in front-office environments Knowledge of multi-threading, performance tuning, and memorymanagement Exposure to FX, listed derivatives, smart order routing, and FIX order flow Rate: Up to £825/day , inside IR35 Contract: Initial 6 months Location: London More ❯
Java development experience Solid understanding of Java architecture and design patterns Excellent debugging and unit testing skills Experience in front-office environments Knowledge of multi-threading, performance tuning, and memorymanagement Exposure to FX, listed derivatives, smart order routing, and FIX order flow Rate: Up to £825/day , inside IR35 Contract: Initial 6 months Location: London More ❯
to junior developers. Work in a fast-paced, agile environment where time-to-market is critical. Skills & Experience Required Expert-level Java development skills with deep knowledge of concurrency, memorymanagement, and the JVM internals. 5+ years of experience building low-latency trading systems (preferably FX, but other asset classes welcome). Proven track record of optimising systems More ❯
to junior developers. Work in a fast-paced, agile environment where time-to-market is critical. Skills & Experience Required Expert-level Java development skills with deep knowledge of concurrency, memorymanagement, and the JVM internals. 5+ years of experience building low-latency trading systems (preferably FX, but other asset classes welcome). Proven track record of optimising systems More ❯
Computer Science, Engineering, Mathematics , or a related quantitative field. 10+ years' experience in Java development for low-latency or electronic trading systems. Deep expertise in Java concurrency, GC tuning, memorymanagement, and NIO . Strong grasp of market microstructure , FIX protocols , and order handling . Proven record of delivering production-grade Java trading platforms in front-office environments. More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Ventula Consulting Limited
via WebSockets, gRPC, or similar protocols. ? Proficiency in translating high-fidelity designs (e.g., Figma, Sketch) into beautiful, performant, and maintainable code. ? A strong understanding of Android UI performance optimization, memorymanagement, and threading models. ? Experience with the full mobile development lifecycle, from ideation and prototyping to testing, release, and maintenance. Preferred Qualifications ? Advanced UI/UX & Conversational AI More ❯
Lead technical delivery across features and components, ensuring architectural consistency, performance, and code quality. Leverage your deep experience with Lightning.js (built on JavaScript/TypeScript) to craft highly performant, memory-efficient, and visually engaging TV applications. Act as a subject matter expert for Lightning.js - mentoring engineers, reviewing designs, and setting standards for UI performance and maintainability. Develop and refine … Strong recent experience with JavaScript, TypeScript and Node.JS. Proven track record building high-quality, performant, and testable applications at scale. Deep understanding of UI performance optimisation, UI rendering and memorymanagement in constrained environments. Strong grasp of software engineering principles, modular architecture, and design patterns. Experience leading technical design and mentoring other engineers. Proficient in unit, integration, and More ❯
programming (OpenGL, CUDA, Vulkan), PyTorch/TensorFlow, and real-time engines (Unity/Unreal). Solid grasp of optimization, linear algebra, computer vision, and numerical methods. Skilled in multithreading, memorymanagement, and profiling for high-performance applications. More ❯
programming (OpenGL, CUDA, Vulkan), PyTorch/TensorFlow, and real-time engines (Unity/Unreal). Solid grasp of optimization, linear algebra, computer vision, and numerical methods. Skilled in multithreading, memorymanagement, and profiling for high-performance applications. If this sounds of interest, please apply here or reach out to daniel@microtech-global.com More ❯
City of London, London, United Kingdom Hybrid/Remote Options
microTECH Global LTD
programming (OpenGL, CUDA, Vulkan), PyTorch/TensorFlow, and real-time engines (Unity/Unreal). Solid grasp of optimization, linear algebra, computer vision, and numerical methods. Skilled in multithreading, memorymanagement, and profiling for high-performance applications. If this sounds of interest, please apply here or reach out to daniel@microtech-global.com More ❯
system calls, threading, IPC, sockets, schedulers). Experience working with FIX/ITCH/OUCH protocols and low-latency networking (TCP, UDP, Multicast). Good understanding of data structures, memorymanagement , and optimising code for speed. Why It’s a Great Move You’d be joining a high-performing team that actually values clean, efficient engineering and gives More ❯
system calls, threading, IPC, sockets, schedulers). Experience working with FIX/ITCH/OUCH protocols and low-latency networking (TCP, UDP, Multicast). Good understanding of data structures, memorymanagement , and optimising code for speed. Why It’s a Great Move You’d be joining a high-performing team that actually values clean, efficient engineering and gives More ❯