Herndon, Virginia, United States Hybrid / WFH Options
iDirect Government LLC
back-end application development Strong expertise with various JavaScript frameworks (Vue, Angular, etc.) Strong expertise with Web Services and RESTful Applications Expertise with NodeJS, WebSockets and in-depth understanding of Microservices methodologies Familiarity with HTML5 and CSS3 Familiarity with system level issues such as scaling, security, and responsiveness Solid programming More ❯
capabilities. Experience with AI/ML integrations or recommendation systems. Expertise in Matrix/Synapse integration for real-time messaging and communication. Knowledge of WebSockets, real-time messaging, and event-driven architectures. Background in platform monetisation and payment integration. Strong familiarity with access control, authentication (OAuth, JWT), and data privacy More ❯
london, south east england, United Kingdom Hybrid / WFH Options
Evermore
capabilities. Experience with AI/ML integrations or recommendation systems. Expertise in Matrix/Synapse integration for real-time messaging and communication. Knowledge of WebSockets, real-time messaging, and event-driven architectures. Background in platform monetisation and payment integration. Strong familiarity with access control, authentication (OAuth, JWT), and data privacy More ❯
frontend developer and very good knowledge of development with Svelte, Vue.js, React or another comparable framework. Bonus: Experience with the AWS Cloud, REST, Node.js, Websockets and your own UI components (HTML/CSS). You're eager to take on responsibility within the team-As a collaborative team player , you More ❯
C#/.NET development . Technical expertise in industrial software development, hardware/software interfacing, testing, and debugging. Experience with gRPC, RESTful APIs, and WebSockets . Strong knowledge of the Avalonia UI framework . Proficiency in Azure DevOps, GitLab, or Atlassian tools . Experience with CI/CD software development. More ❯
grow into a Tech Lead or Solution Architect role What We're Looking For Solid understanding of web development fundamentals: HTTP, REST, security (OWASP), WebSockets Experience with Java-based frameworks such as Spring Boot, Micronaut, or Grails Interest in Rust for web development (e.g. Actix Web, Axum) is a strong More ❯
pipelines Agile software development and code reviews Desirable It would be beneficial for you to have some experience with: Data visualisation libraries e.g. D3, websockets and storybook Design tools such as Figma and Balsamiq Cloud technologies such as Kubernetes and Google Cloud Platform What we offer: In addition to competitive More ❯
months , you will be able to: Maintain and further improve the API used by our interfaces and numerous customers; written in Java (Spring, ORM, Websockets) Maintain and further improve our backoffice; written in Java. Help our customers in the integration of our products in their platforms Be part of the More ❯
component-based frameworks. Experience building or maintaining back-end APIs (ideally in PHP or a similar backend stack). Good understanding of asynchronous communication (WebSockets, REST, etc.). Comfortable in fast-paced, agile environments with high autonomy. Strong communication and problem-solving skills. Bonus Points For: Experience with graphics, animation More ❯
London, England, United Kingdom Hybrid / WFH Options
Source Technology
experience (Oracle preferred) Comfort with Unix/shell scripting Agile mindset (Scrum, TDD, pair programming) Passionate problem solver & team player? Frontend experience: React, HTML5, Websockets Knowledge of Structured Products (Notes, Warrants, etc.) Location: Hybrid Be part of a team where your code actually matters . Ready to make an impact More ❯
london, south east england, United Kingdom Hybrid / WFH Options
Source Technology
experience (Oracle preferred) Comfort with Unix/shell scripting Agile mindset (Scrum, TDD, pair programming) Passionate problem solver & team player? Frontend experience: React, HTML5, Websockets Knowledge of Structured Products (Notes, Warrants, etc.) Location: Hybrid Be part of a team where your code actually matters. Ready to make an impact? Apply More ❯
/CD, and Agile/Scrum experience Nice to Have: Exposure to cross-asset trading environments (FX, Equities, Fixed Income, etc.) Experience with Node.js, WebSockets, or API gateway patterns Testing frameworks (Jasmine, Karma, Cypress) Contract Details: Inside IR35 6 months rolling contract Up to £800 per day Hybrid More ❯
london, south east england, United Kingdom Hybrid / WFH Options
VirtueTech Recruitment Group
/CD, and Agile/Scrum experience Nice to Have: Exposure to cross-asset trading environments (FX, Equities, Fixed Income, etc.) Experience with Node.js, WebSockets, or API gateway patterns Testing frameworks (Jasmine, Karma, Cypress) Contract Details: Inside IR35 6 months rolling contract Up to £800 per day Hybrid More ❯
real time trading systems/market data. Experience in working in a regulated financial firm. Experienced in working with multinational global teams. Knowledge about Websockets Archax is an equal opportunities employer and places a high value on diversity and inclusion. We do not discriminate based on any attribute. More ❯
real time trading systems/market data. Experience in working in a regulated financial firm. Experienced in working with multinational global teams. Knowledge about Websockets Archax is an equal opportunities employer and places a high value on diversity and inclusion. We do not discriminate based on any attribute More ❯
of experience in web development Experience with both frontend (React) and backend development, including API design (REST, GraphQL) Familiarity with real-time communication protocols (WebSockets, gRPC) and complex state management solutions Strong understanding of design principles and accessibility guidelines (WCAG) Excellent problem-solving skills and a proactive approach to addressing More ❯
San Diego, California, United States Hybrid / WFH Options
Northrop Grumman
application performance and ensure smooth operation on Windows and Linux. Work with databases (SQLite, PostgreSQL, MySQL) and query data efficiently. Integrate with RESTful APIs, WebSockets, or third-party services. Write clean, maintainable, and modular code following best practices. Debug, test, and maintain applications to ensure reliability and stability. Collaborate with More ❯
SQL-based databases with at least 2-3 years of experience . ✔ Real-time Streaming & Low Latency – Implement real-time communication protocols such as WebSockets to create engaging, live betting and gaming experiences. ✔ Code Quality & CI/CD – Lead the coding standards across the backend team, drive unit testing, automated More ❯
london, south east england, United Kingdom Hybrid / WFH Options
James Adams
SQL-based databases with at least 2-3 years of experience . ✔ Real-time Streaming & Low Latency – Implement real-time communication protocols such as WebSockets to create engaging, live betting and gaming experiences. ✔ Code Quality & CI/CD – Lead the coding standards across the backend team, drive unit testing, automated More ❯
