Senior React.js Developer - London

Join our dynamic App Platform team as a Senior .Net Developer where you will play a pivotal role in system architecture, software development, and infrastructure consulting. Collaborate with server teams, contribute to open-source projects, and share insights through presentations and blog posts. Your expertise will help shape scalable, high-traffic web applications and enhance our technological landscape for long-term stability.

Join our dynamic team at Version 1 as a .NET Developer, where you will play a pivotal role in designing, developing, and maintaining innovative software solutions. We are looking for talented individuals who are passionate about technology and eager to work on exciting projects that make a difference.Your responsibilities will include collaborating with cross-functional teams to deliver high-quality software, conducting code reviews, and implementing best practices in software development. You will have the opportunity to grow your skills in a supportive environment, working on cutting-edge technologies.

Job Description:We are seeking an accomplished C# and .NET Developer to join our dynamic team. The ideal candidate will possess a deep understanding of C# and the .NET framework, demonstrating proficiency in developing robust applications and solutions.Mode of Interview: Telephonic & Face to Face.

Join Version 1 as a Senior .NET Developer and take your career to the next level. We are seeking a highly skilled and experienced developer to work on exciting projects that drive innovation and excellence.In this role, you will be responsible for designing, developing, and maintaining high-quality software applications using the .NET framework. You will collaborate with cross-functional teams to define and implement solutions that meet business requirements.

Join Capco, a global technology and consulting firm dedicated to the financial services industry, as a Senior .NET Developer specializing in Capital Markets. In this role, you will leverage your expertise in .NET technologies to design, develop, and implement high-performing applications that meet the demands of our clients in the capital markets sector.

Join Capco as a Principal .NET Developer in our London office, where you'll play a pivotal role in shaping cutting-edge technology solutions within the capital markets sector. We are looking for a highly skilled professional with a passion for innovation and a deep understanding of financial services.

C# / .NET Developer for Front Office Electronic Trading SystemsJoin MARGO in the UK (London) – Permanent and Contracting OpportunitiesMARGO is a technology-driven consultancy that provides exceptional IT expertise to the financial services sector.We specialize in intricate software engineering environments where performance, reliability, and scalability are paramount: including real-time systems, low-latency architectures, distributed computing, and high-throughput data processing.By joining MARGO, you'll be immersed in challenging Front Office and Trading IT environments while enjoying a close-knit structure with personalized support and tailored training programs.Business ContextYou will be an integral part of the Front Office/Trading IT environment of one of our tier-1 investment banking or trading partners.The teams are responsible for designing and maintaining mission-critical C# / .NET systems that support electronic trading, real-time risk, and analytics platforms across various asset classes including Equities, Fixed Income, Commodities, Foreign Exchange, and Derivatives.These systems run in close proximity to trading desks and electronic trading platforms, adhering to stringent performance, reliability, and production stability standards.The working environment is characterized by:· Real-time and event-driven architectures· Low-latency and high-throughput processing demands· Strong production stability and reliability constraints· Close collaboration with trading, quantitative, and risk management teams· High engineering standards and rapid delivery cycles

Join MARGO in the UK (London)MARGO is a technology-driven consultancy providing top-tier IT solutions to the financial services sector. Our focus is on sophisticated software engineering, emphasizing performance, reliability, and scalability. Our expertise lies in real-time systems, low-latency architectures, and extensive data processing capabilities.By becoming a part of MARGO, you will engage in challenging Front Office and Trading IT environments, all while enjoying the benefits of a compact organization that prioritizes personalized support and customized training programs.Business ContextYou will integrate into the FX Risk IT ecosystem of a prestigious tier-1 investment bank. Your team will be responsible for designing and maintaining essential systems that support FX Cash (Forward, Swap, NDF) and FX Derivatives (Options, Carbon Offsets).Our environment is centered around the Orchestrade platform and necessitates close collaboration with traders, quants, and risk managers to create optimal trading solutions.Role OverviewWe are seeking a Senior C# / .NET Developer who possesses a robust technical background to spearhead the development and integration of FX trading solutions. While familiarity with the Orchestrade platform is a significant advantage, we primarily value a skilled engineer capable of mastering complex vendor APIs and providing technical guidance in a dynamic, agile environment.Key ResponsibilitiesDesign & Development- System Evolution: Assess, design, and develop high-performance C# solutions tailored for FX cash and derivative products.- Orchestrade Integration: Create code for the seamless integration of Orchestrade with associated internal systems, including Sigma, Barracuda, and Deal Hub.- Architecture: Consult on optimal architectural strategies for integrating vendor products with service-oriented and microservices frameworks.- Data & Middleware:...

Join trainline as a Junior .NET Engineer and embark on an exciting journey in the tech industry! As part of our dynamic development team, you will have the opportunity to contribute to innovative projects that enhance our platform's performance and user experience.Your role will involve collaborating with experienced engineers, gaining hands-on experience in software development, and applying best practices in coding and design. If you are eager to learn and grow in a fast-paced environment, this position is perfect for you!

Caxton seeks a Senior Software Engineer (C# / .NET) to lead a team of developers in London. This role blends hands-on engineering with team leadership, focusing on delivering reliable software using C# and .NET. Key responsibilities Mentor and guide a group of software developers Shape technical decisions and encourage strong team collaboration Maintain high standards of software quality and reliability Take part in designing and implementing new solutions Location This position is based in London, England, United Kingdom.

Join our dynamic global team as a Software Engineer where you will play a crucial role in enhancing the quality, development, and delivery of our software solutions.As part of a multidisciplinary technology department, you will collaborate with experts from various locations including Barcelona, New York, London, Manchester, Bucharest, and India. If you're eager to make a significant impact in a rapidly growing company, we would love to hear from you!About TransPerfect - TechOps:The TransPerfect TechOps team has been instrumental in our success for over a decade, providing technology and services that significantly enhance the efficiency of our clients and colleagues. From streamlining workflows to developing core services on our GlobalLink platform, we create user-friendly client interfaces that simplify complex systems.

Hybrid Working EnvironmentAt ASOS, we value collaboration and innovation, which is why we work in-office at least two days a week. This approach allows us to learn faster, foster a strong culture, and enhance teamwork.ASOS is committed to empowering everyone to be their best selves because when you are at your best, you can achieve extraordinary things. Our Technology team is dedicated to pioneering innovative solutions that transform how millions of customers experience fashion. We believe that fashion has the power to make you feel confident, and we want all ASOSers to embody that feeling of empowerment.We celebrate diversity and welcome individuals from all walks of life, reflecting the vibrant society we are part of. We seek candidates who resonate with our core values: Authenticity, Courage, Creativity, and Discipline. We embrace individuality and recognize that there are countless ways to express 'you.'Are you excited about designing and developing systems that manage ASOS' payment processing? Our Payments Platform Team handles intricate integrations with numerous payment providers. Here, you'll dive deep into understanding the comprehensive payments lifecycle.We process thousands of transactions per minute with precision and security.Our commitment to using cutting-edge technology and best practices means you will receive ongoing security training and have the chance to tackle performance challenges at scale.If you are looking for a stimulating environment that encourages experimentation and continuous learning, ASOS is the place for you!We take great pride in our industry-leading microservices architecture, and we are on the lookout for passionate and talented Engineers to contribute to the exceptional software that makes ASOS stand out!With 30 engineering platforms operating at hyper-scale and handling thousands of requests per second, you will collaborate within strong cross-functional Agile teams to drive quality and technology, sharing your skills and experience along the way. From innovative problem-solving to conceptual development, you will have the opportunity to unleash your full potential and creativity on various ASOS software projects.

Live-Out Housekeeper/CookSalary: Up to £45,000 plus benefitsLocation: Hampstead, London, NW3We are seeking a dedicated and skilled Live-Out Housekeeper/Cook to become an integral part of a delightful household in North West London. This position offers an exceptional opportunity to work within a supportive team environment for a high net worth (HNW) family.Situated in a stunning residence in Hampstead, the ideal candidate will join a team of five staff members, enjoying a role that combines autonomy with teamwork. We are looking for a proactive, self-motivated individual who thrives in a busy family setting.The family, consisting of an executive and an academic, values the positive impact a professional housekeeper and cook can have on their daily life.The successful applicant will possess a positive attitude, embodying the spirit of teamwork with a motto of 'no job is too small.' A well-presented, warm, and engaging personality, along with the ability to think creatively and respond quickly, are essential.Adaptability to the dynamic lifestyle of a busy family is crucial.

Join our innovative team at Toast, Inc. as an Intranet Technical Developer. In this role, you will leverage your technical skills to enhance our internal communication systems, ensuring seamless collaboration across departments. Your expertise will play a crucial part in optimizing user experience and driving efficiency within our organization.

About Us At Konrad Group, we are a pioneering digital consultancy committed to addressing intricate business challenges faced by our global clientele. Our culture thrives on innovation, and we take pride in creating best-in-class digital products that are utilized by millions of consumers worldwide. We seek highly intelligent, analytical, and diligent individuals who are passionate about continuous learning. Role Overview As an iOS Developer, you will engage in the development of iOS applications, collaborating closely with our accomplished software development team. Your role will involve contributing to both consumer and enterprise applications, making it a perfect fit for developers who are confident in their technical skills and eager to be part of a dynamic and continuously evolving team at Konrad. Your Responsibilities Develop maintainable, testable, and high-performance software in conjunction with our exceptional team. Engage in code reviews and conduct thorough testing to guarantee the delivery of top-quality software. Investigate new technologies and tools, sharing insights with the team. Communicate effectively with all team members to facilitate collaboration. Requirements Proven experience in building iOS applications using Swift. Strong understanding of essential programming and computer science concepts. Comprehensive knowledge of the end-to-end mobile application development process, including server-side interactions. Solid grasp of core mobile principles such as UI implementation, common development frameworks, and REST APIs. Familiarity with common architectural patterns like MVVM, MVP, and MVC. Excellent interpersonal skills, as teamwork and communication are key to our success. A proactive mindset with a strong desire to produce outstanding work. A passion for enhancing software development workflows and processes. Preferred Qualifications Familiarity with functional reactive programming and ReactiveX frameworks is advantageous. Experience with Objective-C. Knowledge of modern networking approaches, such as GraphQL. Additional mobile development experience, including Android development with Java or Kotlin, or cross-platform development using React Native, Flutter, Ionic, Xamarin, or Cordova.

Join our innovative team at Upbeat Ideas UK Ltd as a Senior Ruby Developer. We are looking for an experienced developer who is passionate about building high-quality applications using Ruby on Rails. You will play a crucial role in designing, developing, and maintaining scalable web applications that enhance user experience and drive business success.The ideal candidate will have a strong background in software development, a knack for problem-solving, and the ability to work collaboratively in a dynamic environment.

About Checkout.com Checkout.com builds digital payment solutions for businesses worldwide. From our London headquarters, we support clients such as eBay, ASOS, Klarna, Uber Eats, and Sony, helping them process billions of transactions each year. Our platform aims to remove friction from payments and help partners grow. With 19 offices across six continents, our team brings together a wide range of perspectives and expertise. We focus on driving change in fintech and shaping the future of payments. Lead Mobile Developer Role The Lead Mobile Developer will guide the development of Checkout.com's flagship mobile app. This role covers hands-on coding, setting technical direction, and shaping the app’s architecture. The goal: deliver a high-performance, user-focused experience that scales. This position calls for a mobile specialist who can influence technology choices and component strategies. Strong experience building mobile-first consumer applications is essential. Key Responsibilities Design and implement the first version of our mobile app using React Native, with room to adapt the tech stack as needed. Make key architectural decisions on navigation, state management, animations, and performance to support scalability and maintainability. Champion mobile user experience and performance, deciding when to use React Native or native development approaches. Work closely with backend and product teams to deliver seamless, end-to-end experiences. Define core engineering practices for mobile, covering coding standards, CI/CD, testing, and monitoring. Learn more about us at Checkout.com.

Version 1 seeks a Senior Java Developer to join teams working on client applications across digital transformation projects. This position offers the chance to influence how organizations use technology, contributing to solutions that address practical business needs. Key responsibilities Design and develop Java applications in collaboration with cross-functional teams Take part in code reviews, helping maintain code quality and share expertise Mentor junior developers, guiding their technical and professional growth Work on projects that directly impact client operations and outcomes Locations London Birmingham Manchester Newcastle upon Tyne Edinburgh Belfast

Are you an experienced Laravel developer with a passion for crafting robust backend systems? If so, we would love to connect with you! Join the Trybe team as a Senior Backend Developer and play a pivotal role in our mission to deliver exceptional software solutions in the industry. About Trybe:Trybe is a forward-thinking startup dedicated to providing innovative cloud-based software to clients in the hotel, spa, and wellness sectors. Our goal is to transform both guest experiences and back-of-house operations. Founded in 2020, we are proud to partner with leading spa and leisure operators globally. We foster a high-performance, collaborative team culture, welcoming talented individuals who thrive in a dynamic startup environment as we continue to expand.Key Responsibilities:Develop and maintain the Trybe Laravel backend, which powers our entire platform.Create APIs for frontend engineers, facilitate integrations with partners, and manage data processing jobs.Write extensive tests using Pest to ensure top-quality code delivery.Collaborate closely with engineering and customer experience teams to implement innovative features that meet client needs.Contribute ideas throughout the product development cycle to enhance feature quality.Who We Are Looking For:A minimum of 5 years of commercial experience with Laravel.A strong passion for technology and problem-solving.Ability to write clean, maintainable, and thoroughly tested code.A self-motivated learner who thrives in a fast-paced environment.Excellent communication skills and a collaborative team player.Experience handling large datasets, as we process millions of bookings annually.Proficient in building efficient RESTful APIs.Bonus Skills:Familiarity with MongoDB and Eloquent.Experience using Elasticsearch for data aggregation and reporting.