Science, Engineering, or a related field. Proven experience in commodities trading , especially with derivatives and platforms like ICE , CME , NASDAQ , Trayport , or TT . Deep knowledge of C# .NET , RESTful services , and microservice architecture . Hands-on experience with FIX messaging , XML , AMQ , and ideally nHibernate , OData , and TDD . Familiarity with Agile tools like JIRA , Confluence , and Crucible . More ❯
manipulation and the JavaScript object model Experience developing with typescript Thorough understanding of React.js and its core principles Experience with Redux and RTK (RTKQuery also a bonus) Familiarity with RESTful APIs Knowledge of modern authorization mechanisms, such as JSON Web Token Familiarity with modern front-end build pipelines and tools (Github actions a bonus) Experience with common front-end development More ❯
AML, GDPR, PCI/DSS, PSD, Electronic Money. Hands-on knowledge of integration patterns, APIs, cloud services such as AWS/Azure, and security frameworks. Strong technical understanding of RESTful APIs, micro services architectures, messaging systems. Familiar with cloud technologies. Azure would be beneficial. Strong stakeholder management and communication skills, with ability to communicate complex technical solutions to non-technical More ❯
is a bonus Key Responsibilities Design, develop, and maintain full-stack applications using Python, Django, and modern front-end frameworks (React, React Native, or similar). Develop and maintain RESTful APIs and integrate third-party services. Build scalable, secure, and high-performance backend architectures. More ❯
Ping Identity and/or ForgeRock technologies. Experience with IAM integrations in financial systems and cloud platforms (e.g., Azure AD, AWS). Knowledge of scripting (e.g., PowerShell, Python) and RESTful APIs. Experience with identity lifecycle automation and governance tools. More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Client Server
environment. Your Role As a Fidessa Developer, you will: Design and implement new features and enhancements on the Fidessa platform Build high-performance services using Java, Spring Boot and RESTful APIs Collaborate closely with stakeholders across business and technology teams Drive technical solutions from concept to deployment within a Capital Markets context Location/WFH: You'll be based in More ❯
and booking systems . Strong knowledge of low-latency systems and real-time processing . Familiarity with messaging platforms, especially 29 West (Ultra Messaging) . Microservices architecture, Spring Boot , RESTful APIs. Experience with data analytics and pricing models . Exposure to multi-asset products like interest rate swaps, bonds, and futures. TO BE CONSIDERED... This is a unique opportunity to More ❯
practices such as incremental development, continuous integration, test driven development and pair programming. Familiarity with modern Front End technologies and JS frameworks, such as React. Experience writing and consuming RESTful APIs in Python. Experience with AWS services (Lambda, SQS, API gateways, S3). Excellent time-management and organisational skills, with the ability to work to deadlines. Good communication, negotiating and More ❯
East London, London, United Kingdom Hybrid / WFH Options
Tech 4
practices such as incremental development, continuous integration, test driven development and pair programming. Familiarity with modern front-end technologies and JS frameworks, such as React. Experience writing and consuming RESTful APIs in Python. Experience with AWS services (Lambda, SQS, API gateways, S3). Excellent time-management and organisational skills, with the ability to work to deadlines. Good communication, negotiating and More ❯
East London, London, United Kingdom Hybrid / WFH Options
Tech 4
practices such as incremental development, continuous integration, test driven development and pair programming. Familiarity with modern front-end technologies and JS frameworks, such as React. Experience writing and consuming RESTful APIs in Python. Experience with AWS services (Lambda, SQS, API gateways, S3). Excellent time-management and organisational skills, with the ability to work to deadlines. Good communication, negotiating and More ❯
practices such as incremental development, continuous integration, test driven development and pair programming. Familiarity with modern Front End technologies and JS frameworks, such as React. Experience writing and consuming RESTful APIs in Python. Experience with AWS services (Lambda, SQS, API gateways, S3). Excellent time-management and organisational skills, with the ability to work to deadlines. Good communication, negotiating and More ❯
E1, Whitechapel, Greater London, Shadwell, United Kingdom
Tech4 Ltd
practices such as incremental development, continuous integration, test driven development and pair programming. Familiarity with modern Front End technologies and JS frameworks, such as React. Experience writing and consuming RESTful APIs in Python. Experience with AWS services (Lambda, SQS, API gateways, S3). Excellent time-management and organisational skills, with the ability to work to deadlines. Good communication, negotiating and More ❯
london (city of london), south east england, united kingdom
Tech4
practices such as incremental development, continuous integration, test driven development and pair programming. Familiarity with modern Front End technologies and JS frameworks, such as React. Experience writing and consuming RESTful APIs in Python. Experience with AWS services (Lambda, SQS, API gateways, S3). Excellent time-management and organisational skills, with the ability to work to deadlines. Good communication, negotiating and More ❯
practices such as incremental development, continuous integration, test driven development and pair programming. Familiarity with modern front-end technologies and JS frameworks, such as React. Experience writing and consuming RESTful APIs in Python. Experience with AWS services (Lambda, SQS, API gateways, S3). Excellent time-management and organisational skills, with the ability to work to deadlines. Good communication, negotiating and More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Interquest
and continuous improvement in development processes, cloud adoption, and CI/CD pipelines. • Act as a trusted technical advisor, balancing architectural vision with delivery realities. Tech Stack • Backend: Java, RESTful APIs • Cloud & Deployment: AWS, CI/CD pipelines • Other: Third-party API integrations About You • Extensive experience in Java backend development and API architecture. • Proven track record in leading engineering More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Harnham - Data & Analytics Recruitment
building interactive web applications with JavaScript/TypeScript and React . Experience with Node.js, Webpack , and modern development workflows. Strong understanding of client-side performance, cross-browser compatibility, and RESTful APIs . Experience with testing frameworks (e.g., Jest, Enzyme ) and UI tools (e.g., Figma ). A passion for building maintainable, scalable, and high-quality software. Strong communication skills and a More ❯
North London, London, England, United Kingdom Hybrid / WFH Options
Penguin Recruitment Ltd
Availability, Networks: LAN & WAN/Internet, Security* Database and Database Access Design* HCI in Software Systems* Machine-to-Machine Automation Technologies* Java based Enterprise Middleware Platform* Containerisation: Docker* MQTT, RESTful URL Data Integration* Deep Learning Neural Network Platforms* Enterprise Linux Platforms If you fit the criteria for this environmental software developer position and would like to apply for this exciting More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
IT Search & Select
We’re Looking For • 2–4 years of commercial PHP development experience • Strong proficiency with Laravel • Solid understanding of WordPress architecture and custom theme/plugin development • Familiarity with RESTful APIs, MySQL, Git, and modern front-end workflows • A proactive mindset and a collaborative approach to problem-solving Why Join Us? • Hybrid working: 3 days in our West London office More ❯
cycle, with real influence over the direction and implementation of key technical solutions. Key Requirements: Strong commercial experience with C++ and Python (2+ years) Proven experience building and consuming RESTful microservices Experience handling large-scale or high-throughput data systems Prior experience in the finance sector (preferred but not essential) Solid academic background, ideally in Computer Science or a related More ❯
Observer, Factory etc.) and architecture patterns (MVVM, VIPER, Clean Architecture) Proficient in iOS SDKs, including Core Data, Core Animation, Push Notifications, etc. Experience with GraphQL integration and/or RESTful API design and consumption. Experience with analytics tools like Firebase, Adobe Analytics or similar. Knowledge of mobile security best practices including keychain access, obfuscation, SSL pinning. Experience integrating Apple Pay More ❯
Experience & Skills 5+ years of experience in B2B SaaS as a solution architect, professional services engineer, or technical consultant, preferably in highly-integrated, enterprise environments Strong knowledge of APIs (RESTful, GraphQL), web standards (HTTP, HTML/CSS), identity management (SCIM), and authentication protocols (SAML 2.0/OAuth 2.0) with prior software development experience being a plus Experience estimating delivery effort More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Adecco
grasp of SOC 2, ISO 27001, GDPR, and enterprise security best practices. - Understanding of identity and access management (IAM), encryption standards, and secure API design. Integrations & APIs: - Experience with RESTful APIs, webhooks, and SDKs for connecting SaaS platforms to enterprise systems (ERP, CRM, DMS). - Familiarity with 200+ OOTB integrations and strategies for custom integration in complex environments. Enterprise-Scale More ❯
South West London, London, United Kingdom Hybrid / WFH Options
Lynx Recruitment Limited
Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Responsibilities : Design, implement, and manage backend applications and APIs using Node.js Work with RESTful APIs and external services to enhance system capabilities and connectivity Perform unit and integration testing, troubleshoot issues, and maintain high code reliability Collaborating with stakeholders and leadership to understand and More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Lynx Recruitment Ltd
Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Responsibilities: Design, implement, and manage backend applications and APIs using Node.js Work with RESTful APIs and external services to enhance system capabilities and connectivity Perform unit and integration testing, troubleshoot issues, and maintain high code reliability Collaborating with stakeholders and leadership to understand and More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Matched Group
Node.js and AWS Lambda for serverless backend services. Proficiency in React with Next.js for frontend development. Proficiency in TypeScript and experience with infrastructure as code using Terraform. Understanding of RESTful APIs and web application architecture. Experience in a start-up environment. Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field, or equivalent experience. Familiarity with … RESTful APIs and mobile libraries for networking. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving skills and the ability to think algorithmically. Experience with cloud message APIs and usage of push notifications. Knowledge of CI/CD pipelines, code signing, and deployment (App Store More ❯