usability Collaborate across teams to identify opportunities for tool optimization Utilize technologies such as React (Vite, Tanstack Query, Tailwind CSS, Redux), Chart.js, D3.js, Recharts, Django, PostgreSQL, Elasticsearch, Docker, Kubernetes, WebSockets, Redis, and cloud services like AWS (S3, EC2, RDS) Location: R&E (20755) No telework available About SYSTOLIC: SYSTOLIC is dedicated to giving our employees the best possible company experience More ❯
a focus on flexibility, speed, and accuracy. Core Tech Stack Languages: Python (Python 3.10+), JavaScript and TypeScript for frontend Tools: RabbitMQ and ZeroMQ for messaging; PostgreSQL for data storage; Websockets for frontend communication Environment: Linux servers Observability: Prometheus, Grafana, Zabbix Benefits: Working alongside other extremely talented and driven engineers Extremely lucrative salary, bonus upto 30% and excellent benefits Greenfield Python More ❯
a focus on flexibility, speed, and accuracy. Core Tech Stack Languages: Python (Python 3.10+), JavaScript and TypeScript for frontend Tools: RabbitMQ and ZeroMQ for messaging; PostgreSQL for data storage; Websockets for frontend communication Environment: Linux servers Observability: Prometheus, Grafana, Zabbix Benefits: Working alongside other extremely talented and driven engineers Extremely lucrative salary, bonus upto 30% and excellent benefits Greenfield Python More ❯
architecture (This will be tested) Proven record of complex software delivery in the Interest Rates domain Excellent Java 21, Spring Boot, strong practical experience with containers, REST APIs, and WebSockets Strong experience of Agile, SCRUM, and test-driven development processes Strong leadership experience (at least 5 years of leading a team) Contact Ciara Clarke at Harrington Starr for a confidential More ❯
architecture (This will be tested) Proven record of complex software delivery in the Interest Rates domain Excellent Java 21, Spring Boot, strong practical experience with containers, REST APIs, and WebSockets Strong experience of Agile, SCRUM, and test-driven development processes Strong leadership experience (at least 5 years of leading a team) Contact Ciara Clarke at Harrington Starr for a confidential More ❯
Wokingham, Berkshire, United Kingdom Hybrid / WFH Options
EVS Broadcast Equipment SA
improvement of development processes and tools Profile Bachelor or Master's degree in computer science or equal Technical Skills: 5 years plus experience in C++ Experience in RESTful APIs, WebSockets, UDP and TCP Experience of tools such as WireShark and Postman Experience of working in large multithreaded codebase Experience in software development on Windows Experience in software design and architecture More ❯
deep understanding of React (ideally with Next.js) and responsive UI design. Backend proficiency: TypeScript (or other modern equivalent) full-stack development, including scalable serverless architectures, real-time technologies like WebSockets, and accounting for runtime safety in application design. Experience in product development, with a focus on delivering user value and intuitive, seamless user experiences. Skilled in prototyping and rapid iteration More ❯
Solid experience with Python and SQL is a must. Educational background in Computer Science (BSc with professional experience, or MSc with internship experience). Exposure to distributed systems and WebSockets is a plus. Familiarity with Postgres , Grafana , and handling terabytes of data in high-scale, high-uptime environments. Preference for candidates who've worked on large, business-critical systems, not More ❯
architecture (This will be tested) Proven record of complex software delivery in the Interest Rates domain Excellent Java 21, Spring Boot, strong practical experience with containers, REST APIs, and WebSockets Strong experience of Agile, SCRUM, and test-driven development processes Strong leadership experience (at least 5 years of leading a team) Contact Ciara Clarke at Harrington Starr for a confidential More ❯
London, England, United Kingdom Hybrid / WFH Options
Bitfinex
high-availability concepts. Thoroughly experienced with React, React-Native (mainly around Expo), Redux and the core principles surrounding these. Familiar with modern front-end pipelines and tools. Experienced with WebSockets, RESTful based APIs. Interested in bringing diverse, innovative applications to life. Interested in modernizing and optimizing different mobile or web applications. Knowledge in native languages (Swift/Kotlin) and familiarity More ❯
Jetpack Compose and modern Android UI development; Experience with Kotlin Coroutines, Flow, and asynchronous programming ; Familiarity with Room Database, WorkManager, and LiveData/ViewModel ; Proficiency in networking (Retrofit, OkHttp, WebSockets, REST APIs) and authentication mechanisms like OAuth and JWT ; Experience working with secure storage solutions such as EncryptedSharedPreferences and implementing data encryption ; Familiarity with unit and UI testing frameworks like More ❯
are passionate about creating and delivering high quality, well tested software are experienced in building backend services with NodeJS and Nest.js (or similar) are experienced in developing REST APIs, WebSockets and writing OpenAPI documentation are experienced in Jest (or similar) for unit and integration testing are able to set up a NodeJS build pipeline identify and address performance bottlenecks and More ❯
Software Architect experience. Strong knowledge of Python, Go, or Java (Backend/API); confident JS/TypeScript skills (Frontend). Extensive practical experience with integration protocols (REST, gRPC, MQTT, WebSockets). Proficiency with containerisation technologies. Familiarity with edge/fog computing principles. Familiarity with ML frameworks (e.g., Gorgonia, TensorFlow, ONNX) or prior exposure to integrating pre-trained models via API More ❯
London, England, United Kingdom Hybrid / WFH Options
Alix
solving skills Experience with or strong interest in learning frameworks for building AI applications (i.e Langchain, Langgraph, Autogen, VertexAI, etc) Understanding of modern web communication protocols, including REST APIs, WebSockets, and webhooks Understanding of Git and GitHub for version control Decent understanding of databases (SQL or NoSQL) and cloud services (GCP) Ability to work in a fast-paced, startup environment More ❯
This is a U.S. based position. All of the programs we support require U.S. citizenship to be eligible for employment. All work must be conducted within the continental U.S. Who we are: Raft ( ) is a customer-obsessed non-traditional small More ❯
London, England, United Kingdom Hybrid / WFH Options
Blockchain Works
Responsibilities Design, develop, and maintain high-performance, multi-threaded backend systems using Mainly Rust and be able to use Python. Collaborate with frontend engineers and other team members to integrate backend systems with user-facing components Write unit tests using More ❯
Senior Frontend Engineer | FinTech/DeFi | Up to £120,000 p/a + Bonus + Liquid Equity 💻 Senior Frontend Engineer - Up to £120,000 per annum 🪙 Rising player in Decentralised Finance (DeFi) 💧 Up to £120,000 p/a More ❯
About the Company A global proprietary trading firm is seeking a skilled C++ Developer. The firm specializes in high-frequency, low-latency trading across global markets, leveraging advanced technology and a collaborative team culture. With access to major exchanges worldwide More ❯
We are seeking a skilled and proactive Electronic Trader to join our growing electronic trading team. This role is ideal for someone with a strong technical background and a deep understanding of electronic execution workflows within the crypto trading industry More ❯
Key Responsibilities Design, develop and maintain innovative applications to improve communications for the company’s wide range of international clients. Work alongside other Applications Engineers to design the product concept and advise how it can be implemented technically within constraints. More ❯
Responsibilities Implement DeFi applications involving real-time trading and risk monitoring. Research, analyze, and integrate various decentralized applications on the market. Continuously improve the design and performance of our automated trading systems. Implement tools and systems to handle daily analytical More ❯
Social network you want to login/join with: Senior Frontend Engineer | FinTech/DeFi | Up to £120,000 p/a + Bonus + Liquid Equity, crawley, west sussex col-narrow-left Client: Burns Sheehan Location: crawley, west sussex More ❯
